diff --git a/src/abis/BEMultiSigWallet.json b/src/abis/BEMultiSigWallet.json
index 6187cf3..8543c19 100644
--- a/src/abis/BEMultiSigWallet.json
+++ b/src/abis/BEMultiSigWallet.json
@@ -13,6 +13,11 @@
           "name": "proposers",
           "type": "address[]"
         },
+        {
+          "internalType": "address[]",
+          "name": "confirmers",
+          "type": "address[]"
+        },
         {
           "internalType": "address[]",
           "name": "executors",
@@ -272,6 +277,20 @@
       "name": "RoleRevoked",
       "type": "event"
     },
+    {
+      "inputs": [],
+      "name": "CONFIRM_ROLE",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function",
+      "constant": true
+    },
     {
       "inputs": [],
       "name": "DEFAULT_ADMIN_ROLE",
@@ -986,15 +1005,15 @@
       "type": "function"
     }
   ],
-  "metadata": "{\"compiler\":{\"version\":\"0.8.10+commit.fc410830\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_minDelay\",\"type\":\"uint256\"},{\"internalType\":\"address[]\",\"name\":\"proposers\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"executors\",\"type\":\"address[]\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"CallExecuted\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"indexed\":false,\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"delay\",\"type\":\"uint256\"}],\"name\":\"CallScheduled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"Cancelled\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"Confirmation\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"oldDuration\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"newDuration\",\"type\":\"uint256\"}],\"name\":\"MinDelayChange\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"oldDuration\",\"type\":\"uint256\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"newDuration\",\"type\":\"uint256\"}],\"name\":\"RequirementChange\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"Revocation\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"previousAdminRole\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"newAdminRole\",\"type\":\"bytes32\"}],\"name\":\"RoleAdminChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"RoleGranted\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"}],\"name\":\"RoleRevoked\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"DEFAULT_ADMIN_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"EXECUTOR_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"PROPOSER_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"TIMELOCK_ADMIN_ROLE\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"cancel\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_minDelay\",\"type\":\"uint256\"}],\"name\":\"changeDelay\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_required\",\"type\":\"uint256\"}],\"name\":\"changeRequirement\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"confirmTransaction\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"confirmTransactionBatch\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"confirmations\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"execute\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"executeBatch\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"}],\"name\":\"getRoleAdmin\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"getRoleMember\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"}],\"name\":\"getRoleMemberCount\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"getTimestamp\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"timestamp\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"grantRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"hasRole\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"hashOperation\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"hash\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"hashOperationBatch\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"hash\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isConfirmed\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"ready\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperation\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"pending\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationDone\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"done\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationPending\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"pending\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationReady\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"ready\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"minDelay\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"renounceRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"required\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"revokeConfirmation\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"revokeConfirmationBatch\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"revokeRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"delay\",\"type\":\"uint256\"}],\"name\":\"schedule\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"delay\",\"type\":\"uint256\"}],\"name\":\"scheduleBatch\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"events\":{\"CallExecuted(bytes32,uint256,address,uint256,bytes)\":{\"details\":\"Emitted when a call is performed as part of operation `id`.\"},\"CallScheduled(bytes32,uint256,address,uint256,bytes,bytes32,uint256)\":{\"details\":\"Emitted when a call is scheduled as part of operation `id`.\"},\"Cancelled(bytes32)\":{\"details\":\"Emitted when operation `id` is cancelled.\"},\"MinDelayChange(uint256,uint256)\":{\"details\":\"Emitted when the minimum delay for future operations is modified.\"},\"RequirementChange(uint256,uint256)\":{\"details\":\"Emitted when the number of required confimations is modified.\"}},\"kind\":\"dev\",\"methods\":{\"cancel(bytes32)\":{\"details\":\"Cancel an operation. Requirements: - the caller must have the 'proposer' role.\"},\"changeDelay(uint256)\":{\"details\":\"Changes the minimum wallet duration for future operations. Emits a {MinDelayChange} event. Requirements: - the caller must be the wallet itself. This can only be achieved by scheduling and later executing an operation where the wallet is the target and the data is the ABI-encoded call to this function.\"},\"changeRequirement(uint256)\":{\"details\":\"Allows to change the number of required confirmations. Transaction has to be sent by wallet.\",\"params\":{\"_required\":\"Number of required confirmations.\"}},\"confirmTransaction(bytes32)\":{\"details\":\"Allows an executor to confirm a transaction. Requirements - the caller must have the 'executor' role.\"},\"confirmTransactionBatch(bytes32[])\":{\"details\":\"Allows an executor to confirm multiple transactions.\"},\"constructor\":{\"details\":\"Initializes the contract with a given `minDelay`.\"},\"execute(address,uint256,bytes,bytes32,bytes32)\":{\"details\":\"Execute an (ready) operation containing a single transaction. Emits a {CallExecuted} event. Requirements: - the caller must have the 'executor' role.\"},\"executeBatch(address[],uint256[],bytes[],bytes32,bytes32)\":{\"details\":\"Execute an (ready) operation containing a batch of transactions. Emits one {CallExecuted} event per transaction in the batch. Requirements: - the caller must have the 'executor' role.\"},\"getRoleAdmin(bytes32)\":{\"details\":\"Returns the admin role that controls `role`. See {grantRole} and {revokeRole}. To change a role's admin, use {_setRoleAdmin}.\"},\"getRoleMember(bytes32,uint256)\":{\"details\":\"Returns one of the accounts that have `role`. `index` must be a value between 0 and {getRoleMemberCount}, non-inclusive. Role bearers are not sorted in any particular way, and their ordering may change at any point. WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure you perform all queries on the same block. See the following https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] for more information.\"},\"getRoleMemberCount(bytes32)\":{\"details\":\"Returns the number of accounts that have `role`. Can be used together with {getRoleMember} to enumerate all bearers of a role.\"},\"getTimestamp(bytes32)\":{\"details\":\"Returns the timestamp at with an operation becomes ready (0 for unset operations, 1 for done operations).\"},\"grantRole(bytes32,address)\":{\"details\":\"Grants `role` to `account`. If `account` had not been already granted `role`, emits a {RoleGranted} event. Requirements: - the caller must have ``role``'s admin role.\"},\"hasRole(bytes32,address)\":{\"details\":\"Returns `true` if `account` has been granted `role`.\"},\"hashOperation(address,uint256,bytes,bytes32,bytes32)\":{\"details\":\"Returns the identifier of an operation containing a single transaction.\"},\"hashOperationBatch(address[],uint256[],bytes[],bytes32,bytes32)\":{\"details\":\"Returns the identifier of an operation containing a batch of transactions.\"},\"isOperation(bytes32)\":{\"details\":\"Returns whether an id correspond to a registered operation. This includes both Pending, Ready and Done operations.\"},\"isOperationDone(bytes32)\":{\"details\":\"Returns whether an operation is done or not.\"},\"isOperationPending(bytes32)\":{\"details\":\"Returns whether an operation is pending or not.\"},\"isOperationReady(bytes32)\":{\"details\":\"Returns whether an operation is ready or not.\"},\"renounceRole(bytes32,address)\":{\"details\":\"Revokes `role` from the calling account. Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced). If the calling account had been revoked `role`, emits a {RoleRevoked} event. Requirements: - the caller must be `account`.\"},\"revokeConfirmation(bytes32)\":{\"details\":\"Allows an executor to revoke a confirmation for a transaction. Requirements - the caller must have the 'executor' role.\"},\"revokeConfirmationBatch(bytes32[])\":{\"details\":\"Allows an executor to revoke multiple confirmations for a transaction.\"},\"revokeRole(bytes32,address)\":{\"details\":\"Revokes `role` from `account`. If `account` had been granted `role`, emits a {RoleRevoked} event. Requirements: - the caller must have ``role``'s admin role.\"},\"schedule(address,uint256,bytes,bytes32,bytes32,uint256)\":{\"details\":\"Schedule an operation containing a single transaction. Emits a {CallScheduled} event. Requirements: - the caller must have the 'proposer' role.\"},\"scheduleBatch(address[],uint256[],bytes[],bytes32,bytes32,uint256)\":{\"details\":\"Schedule an operation containing a batch of transactions. Emits one {CallScheduled} event per transaction in the batch. Requirements: - the caller must have the 'proposer' role.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"notice\":\"MultiSigWallet with timelocker\",\"version\":1}},\"settings\":{\"compilationTarget\":{\"project:/contracts/core/BEMultiSigWallet.sol\":\"BEMultiSigWallet\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/access/AccessControl.sol\":{\"keccak256\":\"0x4a1a0ba12bf1a33f10d9fe226278cf59675c0b929d29e4da99658a079b27fb84\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bda1319db846d6d6f92d8a57a9bdee8bde1dc39aa7546165791692c24dd6f30a\",\"dweb:/ipfs/Qma5oZ7DmbdAjd8mpiW7mx896PDtwsQtCQ2hj9Upf7b7JK\"]},\"@openzeppelin/contracts/access/AccessControlEnumerable.sol\":{\"keccak256\":\"0x13f5e15f2a0650c0b6aaee2ef19e89eaf4870d6e79662d572a393334c1397247\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://7ee05f28f549a5d6515e152580716b87636ed4bfab9812499a6e3803df88288b\",\"dweb:/ipfs/QmeEnhdwY1t5Y3YU5a4ffzgXuToydH2PNdNxV9W7dEPRQJ\"]},\"@openzeppelin/contracts/access/IAccessControl.sol\":{\"keccak256\":\"0x59ce320a585d7e1f163cd70390a0ef2ff9cec832e2aa544293a00692465a7a57\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bb2c137c343ef0c4c7ce7b18c1d108afdc9d315a04e48307288d2d05adcbde3a\",\"dweb:/ipfs/QmUxhrAQM3MM3FF5j7AtcXLXguWCJBHJ14BRdVtuoQc8Fh\"]},\"@openzeppelin/contracts/access/IAccessControlEnumerable.sol\":{\"keccak256\":\"0xba4459ab871dfa300f5212c6c30178b63898c03533a1ede28436f11546626676\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://3dcc7b09bfa6e18aab262ca372f4a9b1fc82e294b430706a4e1378cf58e6a276\",\"dweb:/ipfs/QmT8oSAcesdctR15HMLhr2a1HRpXymxdjTfdtfTYJcj2N2\"]},\"@openzeppelin/contracts/utils/Context.sol\":{\"keccak256\":\"0xe2e337e6dde9ef6b680e07338c493ebea1b5fd09b43424112868e9cc1706bca7\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6df0ddf21ce9f58271bdfaa85cde98b200ef242a05a3f85c2bc10a8294800a92\",\"dweb:/ipfs/QmRK2Y5Yc6BK7tGKkgsgn3aJEQGi5aakeSPZvS65PV8Xp3\"]},\"@openzeppelin/contracts/utils/Strings.sol\":{\"keccak256\":\"0x32c202bd28995dd20c4347b7c6467a6d3241c74c8ad3edcbb610cd9205916c45\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://8179c356adb19e70d6b31a1eedc8c5c7f0c00e669e2540f4099e3844c6074d30\",\"dweb:/ipfs/QmWFbivarEobbqhS1go64ootVuHfVohBseerYy9FTEd1W2\"]},\"@openzeppelin/contracts/utils/introspection/ERC165.sol\":{\"keccak256\":\"0xd10975de010d89fd1c78dc5e8a9a7e7f496198085c151648f20cba166b32582b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://fb0048dee081f6fffa5f74afc3fb328483c2a30504e94a0ddd2a5114d731ec4d\",\"dweb:/ipfs/QmZptt1nmYoA5SgjwnSgWqgUSDgm4q52Yos3xhnMv3MV43\"]},\"@openzeppelin/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x447a5f3ddc18419d41ff92b3773fb86471b1db25773e07f877f548918a185bf1\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://be161e54f24e5c6fae81a12db1a8ae87bc5ae1b0ddc805d82a1440a68455088f\",\"dweb:/ipfs/QmP7C3CHdY9urF4dEMb9wmsp1wMxHF6nhA2yQE5SKiPAdy\"]},\"@openzeppelin/contracts/utils/structs/EnumerableSet.sol\":{\"keccak256\":\"0x9772845c886f87a3aab315f8d6b68aa599027c20f441b131cd4afaf65b588900\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ad2f29a9c17a4f746416c9e254e17671f43c409dbfa6e4d7d76c3e4a83212d31\",\"dweb:/ipfs/QmTqU65L6iu6yqmXKzcNLPioR8etzKPWycpDJCm17ifVdS\"]},\"project:/contracts/core/BEMultiSigWallet.sol\":{\"keccak256\":\"0x7c1971c54a4a58a4a8e4d64009658cb838601e821b7e504100c7dafbe6a6e5ba\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6549e5713a356ea337a38ef9b19a720625974d34fbc8ca7e8a28e089d2b4d4bc\",\"dweb:/ipfs/Qmdy8iCkZv6gfq7U4Z4v2zJ8GnGKvjFkwJyC642Y9wmMGY\"]}},\"version\":1}",
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nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_minDelay\",\"type\":\"uint256\"}],\"name\":\"changeDelay\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_required\",\"type\":\"uint256\"}],\"name\":\"changeRequirement\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"confirmTransaction\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"confirmTransactionBatch\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"confirmations\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"execute\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"executeBatch\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"}],\"name\":\"getRoleAdmin\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"\",\"type\":\"bytes32\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"getRoleMember\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"}],\"name\":\"getRoleMemberCount\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"getTimestamp\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"timestamp\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"grantRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"hasRole\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"hashOperation\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"hash\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"}],\"name\":\"hashOperationBatch\",\"outputs\":[{\"internalType\":\"bytes32\",\"name\":\"hash\",\"type\":\"bytes32\"}],\"stateMutability\":\"pure\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isConfirmed\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"ready\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperation\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"pending\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationDone\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"done\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationPending\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"pending\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"isOperationReady\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"ready\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"minDelay\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"renounceRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"required\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"id\",\"type\":\"bytes32\"}],\"name\":\"revokeConfirmation\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32[]\",\"name\":\"ids\",\"type\":\"bytes32[]\"}],\"name\":\"revokeConfirmationBatch\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"role\",\"type\":\"bytes32\"},{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"revokeRole\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"target\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"delay\",\"type\":\"uint256\"}],\"name\":\"schedule\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"targets\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"values\",\"type\":\"uint256[]\"},{\"internalType\":\"bytes[]\",\"name\":\"datas\",\"type\":\"bytes[]\"},{\"internalType\":\"bytes32\",\"name\":\"predecessor\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"salt\",\"type\":\"bytes32\"},{\"internalType\":\"uint256\",\"name\":\"delay\",\"type\":\"uint256\"}],\"name\":\"scheduleBatch\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"}],\"devdoc\":{\"events\":{\"CallExecuted(bytes32,uint256,address,uint256,bytes)\":{\"details\":\"Emitted when a call is performed as part of operation `id`.\"},\"CallScheduled(bytes32,uint256,address,uint256,bytes,bytes32,uint256)\":{\"details\":\"Emitted when a call is scheduled as part of operation `id`.\"},\"Cancelled(bytes32)\":{\"details\":\"Emitted when operation `id` is cancelled.\"},\"MinDelayChange(uint256,uint256)\":{\"details\":\"Emitted when the minimum delay for future operations is modified.\"},\"RequirementChange(uint256,uint256)\":{\"details\":\"Emitted when the number of required confimations is modified.\"}},\"kind\":\"dev\",\"methods\":{\"cancel(bytes32)\":{\"details\":\"Cancel an operation. Requirements: - the caller must have the 'proposer' role.\"},\"changeDelay(uint256)\":{\"details\":\"Changes the minimum wallet duration for future operations. Emits a {MinDelayChange} event. Requirements: - the caller must be the wallet itself. This can only be achieved by scheduling and later executing an operation where the wallet is the target and the data is the ABI-encoded call to this function.\"},\"changeRequirement(uint256)\":{\"details\":\"Allows to change the number of required confirmations. Transaction has to be sent by wallet.\",\"params\":{\"_required\":\"Number of required confirmations.\"}},\"confirmTransaction(bytes32)\":{\"details\":\"Allows an executor to confirm a transaction. Requirements - the caller must have the 'executor' role.\"},\"confirmTransactionBatch(bytes32[])\":{\"details\":\"Allows an executor to confirm multiple transactions.\"},\"constructor\":{\"details\":\"Initializes the contract with a given `minDelay`.\"},\"execute(address,uint256,bytes,bytes32,bytes32)\":{\"details\":\"Execute an (ready) operation containing a single transaction. Emits a {CallExecuted} event. Requirements: - the caller must have the 'executor' role.\"},\"executeBatch(address[],uint256[],bytes[],bytes32,bytes32)\":{\"details\":\"Execute an (ready) operation containing a batch of transactions. Emits one {CallExecuted} event per transaction in the batch. Requirements: - the caller must have the 'executor' role.\"},\"getRoleAdmin(bytes32)\":{\"details\":\"Returns the admin role that controls `role`. See {grantRole} and {revokeRole}. To change a role's admin, use {_setRoleAdmin}.\"},\"getRoleMember(bytes32,uint256)\":{\"details\":\"Returns one of the accounts that have `role`. `index` must be a value between 0 and {getRoleMemberCount}, non-inclusive. Role bearers are not sorted in any particular way, and their ordering may change at any point. WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure you perform all queries on the same block. See the following https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post] for more information.\"},\"getRoleMemberCount(bytes32)\":{\"details\":\"Returns the number of accounts that have `role`. Can be used together with {getRoleMember} to enumerate all bearers of a role.\"},\"getTimestamp(bytes32)\":{\"details\":\"Returns the timestamp at with an operation becomes ready (0 for unset operations, 1 for done operations).\"},\"grantRole(bytes32,address)\":{\"details\":\"Grants `role` to `account`. If `account` had not been already granted `role`, emits a {RoleGranted} event. Requirements: - the caller must have ``role``'s admin role.\"},\"hasRole(bytes32,address)\":{\"details\":\"Returns `true` if `account` has been granted `role`.\"},\"hashOperation(address,uint256,bytes,bytes32,bytes32)\":{\"details\":\"Returns the identifier of an operation containing a single transaction.\"},\"hashOperationBatch(address[],uint256[],bytes[],bytes32,bytes32)\":{\"details\":\"Returns the identifier of an operation containing a batch of transactions.\"},\"isOperation(bytes32)\":{\"details\":\"Returns whether an id correspond to a registered operation. This includes both Pending, Ready and Done operations.\"},\"isOperationDone(bytes32)\":{\"details\":\"Returns whether an operation is done or not.\"},\"isOperationPending(bytes32)\":{\"details\":\"Returns whether an operation is pending or not.\"},\"isOperationReady(bytes32)\":{\"details\":\"Returns whether an operation is ready or not.\"},\"renounceRole(bytes32,address)\":{\"details\":\"Revokes `role` from the calling account. Roles are often managed via {grantRole} and {revokeRole}: this function's purpose is to provide a mechanism for accounts to lose their privileges if they are compromised (such as when a trusted device is misplaced). If the calling account had been revoked `role`, emits a {RoleRevoked} event. Requirements: - the caller must be `account`.\"},\"revokeConfirmation(bytes32)\":{\"details\":\"Allows an executor to revoke a confirmation for a transaction. Requirements - the caller must have the 'executor' role.\"},\"revokeConfirmationBatch(bytes32[])\":{\"details\":\"Allows an executor to revoke multiple confirmations for a transaction.\"},\"revokeRole(bytes32,address)\":{\"details\":\"Revokes `role` from `account`. If `account` had been granted `role`, emits a {RoleRevoked} event. Requirements: - the caller must have ``role``'s admin role.\"},\"schedule(address,uint256,bytes,bytes32,bytes32,uint256)\":{\"details\":\"Schedule an operation containing a single transaction. Emits a {CallScheduled} event. Requirements: - the caller must have the 'proposer' role.\"},\"scheduleBatch(address[],uint256[],bytes[],bytes32,bytes32,uint256)\":{\"details\":\"Schedule an operation containing a batch of transactions. Emits one {CallScheduled} event per transaction in the batch. Requirements: - the caller must have the 'proposer' role.\"},\"supportsInterface(bytes4)\":{\"details\":\"See {IERC165-supportsInterface}.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"notice\":\"MultiSigWallet with timelocker\",\"version\":1}},\"settings\":{\"compilationTarget\":{\"project:/contracts/core/BEMultiSigWallet.sol\":\"BEMultiSigWallet\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/access/AccessControl.sol\":{\"keccak256\":\"0x4a1a0ba12bf1a33f10d9fe226278cf59675c0b929d29e4da99658a079b27fb84\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bda1319db846d6d6f92d8a57a9bdee8bde1dc39aa7546165791692c24dd6f30a\",\"dweb:/ipfs/Qma5oZ7DmbdAjd8mpiW7mx896PDtwsQtCQ2hj9Upf7b7JK\"]},\"@openzeppelin/contracts/access/AccessControlEnumerable.sol\":{\"keccak256\":\"0x13f5e15f2a0650c0b6aaee2ef19e89eaf4870d6e79662d572a393334c1397247\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://7ee05f28f549a5d6515e152580716b87636ed4bfab9812499a6e3803df88288b\",\"dweb:/ipfs/QmeEnhdwY1t5Y3YU5a4ffzgXuToydH2PNdNxV9W7dEPRQJ\"]},\"@openzeppelin/contracts/access/IAccessControl.sol\":{\"keccak256\":\"0x59ce320a585d7e1f163cd70390a0ef2ff9cec832e2aa544293a00692465a7a57\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bb2c137c343ef0c4c7ce7b18c1d108afdc9d315a04e48307288d2d05adcbde3a\",\"dweb:/ipfs/QmUxhrAQM3MM3FF5j7AtcXLXguWCJBHJ14BRdVtuoQc8Fh\"]},\"@openzeppelin/contracts/access/IAccessControlEnumerable.sol\":{\"keccak256\":\"0xba4459ab871dfa300f5212c6c30178b63898c03533a1ede28436f11546626676\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://3dcc7b09bfa6e18aab262ca372f4a9b1fc82e294b430706a4e1378cf58e6a276\",\"dweb:/ipfs/QmT8oSAcesdctR15HMLhr2a1HRpXymxdjTfdtfTYJcj2N2\"]},\"@openzeppelin/contracts/utils/Context.sol\":{\"keccak256\":\"0xe2e337e6dde9ef6b680e07338c493ebea1b5fd09b43424112868e9cc1706bca7\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6df0ddf21ce9f58271bdfaa85cde98b200ef242a05a3f85c2bc10a8294800a92\",\"dweb:/ipfs/QmRK2Y5Yc6BK7tGKkgsgn3aJEQGi5aakeSPZvS65PV8Xp3\"]},\"@openzeppelin/contracts/utils/Strings.sol\":{\"keccak256\":\"0x32c202bd28995dd20c4347b7c6467a6d3241c74c8ad3edcbb610cd9205916c45\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://8179c356adb19e70d6b31a1eedc8c5c7f0c00e669e2540f4099e3844c6074d30\",\"dweb:/ipfs/QmWFbivarEobbqhS1go64ootVuHfVohBseerYy9FTEd1W2\"]},\"@openzeppelin/contracts/utils/introspection/ERC165.sol\":{\"keccak256\":\"0xd10975de010d89fd1c78dc5e8a9a7e7f496198085c151648f20cba166b32582b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://fb0048dee081f6fffa5f74afc3fb328483c2a30504e94a0ddd2a5114d731ec4d\",\"dweb:/ipfs/QmZptt1nmYoA5SgjwnSgWqgUSDgm4q52Yos3xhnMv3MV43\"]},\"@openzeppelin/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0x447a5f3ddc18419d41ff92b3773fb86471b1db25773e07f877f548918a185bf1\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://be161e54f24e5c6fae81a12db1a8ae87bc5ae1b0ddc805d82a1440a68455088f\",\"dweb:/ipfs/QmP7C3CHdY9urF4dEMb9wmsp1wMxHF6nhA2yQE5SKiPAdy\"]},\"@openzeppelin/contracts/utils/structs/EnumerableSet.sol\":{\"keccak256\":\"0x9772845c886f87a3aab315f8d6b68aa599027c20f441b131cd4afaf65b588900\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://ad2f29a9c17a4f746416c9e254e17671f43c409dbfa6e4d7d76c3e4a83212d31\",\"dweb:/ipfs/QmTqU65L6iu6yqmXKzcNLPioR8etzKPWycpDJCm17ifVdS\"]},\"project:/contracts/core/BEMultiSigWallet.sol\":{\"keccak256\":\"0x358ae0b66d948bef6874c213927825030ee1110c7124315475470bf7b716d0cd\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://0d89b721b1036bbd2ca76715b6afb25762f361c04f9b2fa9682d4dbb7d1abb14\",\"dweb:/ipfs/QmaZUr7LdfCfEwgpPGrFMfFFoNUvTWugR9tz2nUuTntR9k\"]}},\"version\":1}",
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+                  "src": "5403:15:10"
                 },
                 {
                   "expression": {
@@ -3569,14 +3741,14 @@
                       {
                         "kind": "number",
                         "nodeType": "YulLiteral",
-                        "src": "5074:1:10",
+                        "src": "5434:1:10",
                         "type": "",
                         "value": "0"
                       },
                       {
                         "kind": "number",
                         "nodeType": "YulLiteral",
-                        "src": "5077:4:10",
+                        "src": "5437:4:10",
                         "type": "",
                         "value": "0x24"
                       }
@@ -3584,56 +3756,56 @@
                     "functionName": {
                       "name": "revert",
                       "nodeType": "YulIdentifier",
-                      "src": "5067:6:10"
+                      "src": "5427:6:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "5067:15:10"
+                    "src": "5427:15:10"
                   },
                   "nodeType": "YulExpressionStatement",
-                  "src": "5067:15:10"
+                  "src": "5427:15:10"
                 }
               ]
             },
             "name": "panic_error_0x11",
             "nodeType": "YulFunctionDefinition",
-            "src": "4908:180:10"
+            "src": "5268:180:10"
           },
           {
             "body": {
               "nodeType": "YulBlock",
-              "src": "5137:190:10",
+              "src": "5497:190:10",
               "statements": [
                 {
                   "nodeType": "YulAssignment",
-                  "src": "5147:33:10",
+                  "src": "5507:33:10",
                   "value": {
                     "arguments": [
                       {
                         "name": "value",
                         "nodeType": "YulIdentifier",
-                        "src": "5174:5:10"
+                        "src": "5534:5:10"
                       }
                     ],
                     "functionName": {
                       "name": "cleanup_t_uint256",
                       "nodeType": "YulIdentifier",
-                      "src": "5156:17:10"
+                      "src": "5516:17:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "5156:24:10"
+                    "src": "5516:24:10"
                   },
                   "variableNames": [
                     {
                       "name": "value",
                       "nodeType": "YulIdentifier",
-                      "src": "5147:5:10"
+                      "src": "5507:5:10"
                     }
                   ]
                 },
                 {
                   "body": {
                     "nodeType": "YulBlock",
-                    "src": "5270:22:10",
+                    "src": "5630:22:10",
                     "statements": [
                       {
                         "expression": {
@@ -3641,13 +3813,13 @@
                           "functionName": {
                             "name": "panic_error_0x11",
                             "nodeType": "YulIdentifier",
-                            "src": "5272:16:10"
+                            "src": "5632:16:10"
                           },
                           "nodeType": "YulFunctionCall",
-                          "src": "5272:18:10"
+                          "src": "5632:18:10"
                         },
                         "nodeType": "YulExpressionStatement",
-                        "src": "5272:18:10"
+                        "src": "5632:18:10"
                       }
                     ]
                   },
@@ -3656,12 +3828,12 @@
                       {
                         "name": "value",
                         "nodeType": "YulIdentifier",
-                        "src": "5195:5:10"
+                        "src": "5555:5:10"
                       },
                       {
                         "kind": "number",
                         "nodeType": "YulLiteral",
-                        "src": "5202:66:10",
+                        "src": "5562:66:10",
                         "type": "",
                         "value": "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
                       }
@@ -3669,28 +3841,28 @@
                     "functionName": {
                       "name": "eq",
                       "nodeType": "YulIdentifier",
-                      "src": "5192:2:10"
+                      "src": "5552:2:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "5192:77:10"
+                    "src": "5552:77:10"
                   },
                   "nodeType": "YulIf",
-                  "src": "5189:103:10"
+                  "src": "5549:103:10"
                 },
                 {
                   "nodeType": "YulAssignment",
-                  "src": "5301:20:10",
+                  "src": "5661:20:10",
                   "value": {
                     "arguments": [
                       {
                         "name": "value",
                         "nodeType": "YulIdentifier",
-                        "src": "5312:5:10"
+                        "src": "5672:5:10"
                       },
                       {
                         "kind": "number",
                         "nodeType": "YulLiteral",
-                        "src": "5319:1:10",
+                        "src": "5679:1:10",
                         "type": "",
                         "value": "1"
                       }
@@ -3698,16 +3870,16 @@
                     "functionName": {
                       "name": "add",
                       "nodeType": "YulIdentifier",
-                      "src": "5308:3:10"
+                      "src": "5668:3:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "5308:13:10"
+                    "src": "5668:13:10"
                   },
                   "variableNames": [
                     {
                       "name": "ret",
                       "nodeType": "YulIdentifier",
-                      "src": "5301:3:10"
+                      "src": "5661:3:10"
                     }
                   ]
                 }
@@ -3719,7 +3891,7 @@
               {
                 "name": "value",
                 "nodeType": "YulTypedName",
-                "src": "5123:5:10",
+                "src": "5483:5:10",
                 "type": ""
               }
             ],
@@ -3727,30 +3899,30 @@
               {
                 "name": "ret",
                 "nodeType": "YulTypedName",
-                "src": "5133:3:10",
+                "src": "5493:3:10",
                 "type": ""
               }
             ],
-            "src": "5094:233:10"
+            "src": "5454:233:10"
           },
           {
             "body": {
               "nodeType": "YulBlock",
-              "src": "5386:32:10",
+              "src": "5746:32:10",
               "statements": [
                 {
                   "nodeType": "YulAssignment",
-                  "src": "5396:16:10",
+                  "src": "5756:16:10",
                   "value": {
                     "name": "value",
                     "nodeType": "YulIdentifier",
-                    "src": "5407:5:10"
+                    "src": "5767:5:10"
                   },
                   "variableNames": [
                     {
                       "name": "cleaned",
                       "nodeType": "YulIdentifier",
-                      "src": "5396:7:10"
+                      "src": "5756:7:10"
                     }
                   ]
                 }
@@ -3762,7 +3934,7 @@
               {
                 "name": "value",
                 "nodeType": "YulTypedName",
-                "src": "5368:5:10",
+                "src": "5728:5:10",
                 "type": ""
               }
             ],
@@ -3770,30 +3942,30 @@
               {
                 "name": "cleaned",
                 "nodeType": "YulTypedName",
-                "src": "5378:7:10",
+                "src": "5738:7:10",
                 "type": ""
               }
             ],
-            "src": "5333:85:10"
+            "src": "5693:85:10"
           },
           {
             "body": {
               "nodeType": "YulBlock",
-              "src": "5456:28:10",
+              "src": "5816:28:10",
               "statements": [
                 {
                   "nodeType": "YulAssignment",
-                  "src": "5466:12:10",
+                  "src": "5826:12:10",
                   "value": {
                     "name": "value",
                     "nodeType": "YulIdentifier",
-                    "src": "5473:5:10"
+                    "src": "5833:5:10"
                   },
                   "variableNames": [
                     {
                       "name": "ret",
                       "nodeType": "YulIdentifier",
-                      "src": "5466:3:10"
+                      "src": "5826:3:10"
                     }
                   ]
                 }
@@ -3805,7 +3977,7 @@
               {
                 "name": "value",
                 "nodeType": "YulTypedName",
-                "src": "5442:5:10",
+                "src": "5802:5:10",
                 "type": ""
               }
             ],
@@ -3813,20 +3985,20 @@
               {
                 "name": "ret",
                 "nodeType": "YulTypedName",
-                "src": "5452:3:10",
+                "src": "5812:3:10",
                 "type": ""
               }
             ],
-            "src": "5424:60:10"
+            "src": "5784:60:10"
           },
           {
             "body": {
               "nodeType": "YulBlock",
-              "src": "5558:90:10",
+              "src": "5918:90:10",
               "statements": [
                 {
                   "nodeType": "YulAssignment",
-                  "src": "5568:74:10",
+                  "src": "5928:74:10",
                   "value": {
                     "arguments": [
                       {
@@ -3836,40 +4008,40 @@
                               {
                                 "name": "value",
                                 "nodeType": "YulIdentifier",
-                                "src": "5634:5:10"
+                                "src": "5994:5:10"
                               }
                             ],
                             "functionName": {
                               "name": "cleanup_t_rational_0_by_1",
                               "nodeType": "YulIdentifier",
-                              "src": "5608:25:10"
+                              "src": "5968:25:10"
                             },
                             "nodeType": "YulFunctionCall",
-                            "src": "5608:32:10"
+                            "src": "5968:32:10"
                           }
                         ],
                         "functionName": {
                           "name": "identity",
                           "nodeType": "YulIdentifier",
-                          "src": "5599:8:10"
+                          "src": "5959:8:10"
                         },
                         "nodeType": "YulFunctionCall",
-                        "src": "5599:42:10"
+                        "src": "5959:42:10"
                       }
                     ],
                     "functionName": {
                       "name": "cleanup_t_uint256",
                       "nodeType": "YulIdentifier",
-                      "src": "5581:17:10"
+                      "src": "5941:17:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "5581:61:10"
+                    "src": "5941:61:10"
                   },
                   "variableNames": [
                     {
                       "name": "converted",
                       "nodeType": "YulIdentifier",
-                      "src": "5568:9:10"
+                      "src": "5928:9:10"
                     }
                   ]
                 }
@@ -3881,7 +4053,7 @@
               {
                 "name": "value",
                 "nodeType": "YulTypedName",
-                "src": "5538:5:10",
+                "src": "5898:5:10",
                 "type": ""
               }
             ],
@@ -3889,16 +4061,16 @@
               {
                 "name": "converted",
                 "nodeType": "YulTypedName",
-                "src": "5548:9:10",
+                "src": "5908:9:10",
                 "type": ""
               }
             ],
-            "src": "5490:158:10"
+            "src": "5850:158:10"
           },
           {
             "body": {
               "nodeType": "YulBlock",
-              "src": "5727:74:10",
+              "src": "6087:74:10",
               "statements": [
                 {
                   "expression": {
@@ -3906,35 +4078,35 @@
                       {
                         "name": "pos",
                         "nodeType": "YulIdentifier",
-                        "src": "5744:3:10"
+                        "src": "6104:3:10"
                       },
                       {
                         "arguments": [
                           {
                             "name": "value",
                             "nodeType": "YulIdentifier",
-                            "src": "5788:5:10"
+                            "src": "6148:5:10"
                           }
                         ],
                         "functionName": {
                           "name": "convert_t_rational_0_by_1_to_t_uint256",
                           "nodeType": "YulIdentifier",
-                          "src": "5749:38:10"
+                          "src": "6109:38:10"
                         },
                         "nodeType": "YulFunctionCall",
-                        "src": "5749:45:10"
+                        "src": "6109:45:10"
                       }
                     ],
                     "functionName": {
                       "name": "mstore",
                       "nodeType": "YulIdentifier",
-                      "src": "5737:6:10"
+                      "src": "6097:6:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "5737:58:10"
+                    "src": "6097:58:10"
                   },
                   "nodeType": "YulExpressionStatement",
-                  "src": "5737:58:10"
+                  "src": "6097:58:10"
                 }
               ]
             },
@@ -3944,22 +4116,22 @@
               {
                 "name": "value",
                 "nodeType": "YulTypedName",
-                "src": "5715:5:10",
+                "src": "6075:5:10",
                 "type": ""
               },
               {
                 "name": "pos",
                 "nodeType": "YulTypedName",
-                "src": "5722:3:10",
+                "src": "6082:3:10",
                 "type": ""
               }
             ],
-            "src": "5654:147:10"
+            "src": "6014:147:10"
           },
           {
             "body": {
               "nodeType": "YulBlock",
-              "src": "5872:53:10",
+              "src": "6232:53:10",
               "statements": [
                 {
                   "expression": {
@@ -3967,35 +4139,35 @@
                       {
                         "name": "pos",
                         "nodeType": "YulIdentifier",
-                        "src": "5889:3:10"
+                        "src": "6249:3:10"
                       },
                       {
                         "arguments": [
                           {
                             "name": "value",
                             "nodeType": "YulIdentifier",
-                            "src": "5912:5:10"
+                            "src": "6272:5:10"
                           }
                         ],
                         "functionName": {
                           "name": "cleanup_t_uint256",
                           "nodeType": "YulIdentifier",
-                          "src": "5894:17:10"
+                          "src": "6254:17:10"
                         },
                         "nodeType": "YulFunctionCall",
-                        "src": "5894:24:10"
+                        "src": "6254:24:10"
                       }
                     ],
                     "functionName": {
                       "name": "mstore",
                       "nodeType": "YulIdentifier",
-                      "src": "5882:6:10"
+                      "src": "6242:6:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "5882:37:10"
+                    "src": "6242:37:10"
                   },
                   "nodeType": "YulExpressionStatement",
-                  "src": "5882:37:10"
+                  "src": "6242:37:10"
                 }
               ]
             },
@@ -4005,37 +4177,37 @@
               {
                 "name": "value",
                 "nodeType": "YulTypedName",
-                "src": "5860:5:10",
+                "src": "6220:5:10",
                 "type": ""
               },
               {
                 "name": "pos",
                 "nodeType": "YulTypedName",
-                "src": "5867:3:10",
+                "src": "6227:3:10",
                 "type": ""
               }
             ],
-            "src": "5807:118:10"
+            "src": "6167:118:10"
           },
           {
             "body": {
               "nodeType": "YulBlock",
-              "src": "6065:214:10",
+              "src": "6425:214:10",
               "statements": [
                 {
                   "nodeType": "YulAssignment",
-                  "src": "6075:26:10",
+                  "src": "6435:26:10",
                   "value": {
                     "arguments": [
                       {
                         "name": "headStart",
                         "nodeType": "YulIdentifier",
-                        "src": "6087:9:10"
+                        "src": "6447:9:10"
                       },
                       {
                         "kind": "number",
                         "nodeType": "YulLiteral",
-                        "src": "6098:2:10",
+                        "src": "6458:2:10",
                         "type": "",
                         "value": "64"
                       }
@@ -4043,16 +4215,16 @@
                     "functionName": {
                       "name": "add",
                       "nodeType": "YulIdentifier",
-                      "src": "6083:3:10"
+                      "src": "6443:3:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "6083:18:10"
+                    "src": "6443:18:10"
                   },
                   "variableNames": [
                     {
                       "name": "tail",
                       "nodeType": "YulIdentifier",
-                      "src": "6075:4:10"
+                      "src": "6435:4:10"
                     }
                   ]
                 },
@@ -4062,19 +4234,19 @@
                       {
                         "name": "value0",
                         "nodeType": "YulIdentifier",
-                        "src": "6163:6:10"
+                        "src": "6523:6:10"
                       },
                       {
                         "arguments": [
                           {
                             "name": "headStart",
                             "nodeType": "YulIdentifier",
-                            "src": "6176:9:10"
+                            "src": "6536:9:10"
                           },
                           {
                             "kind": "number",
                             "nodeType": "YulLiteral",
-                            "src": "6187:1:10",
+                            "src": "6547:1:10",
                             "type": "",
                             "value": "0"
                           }
@@ -4082,22 +4254,22 @@
                         "functionName": {
                           "name": "add",
                           "nodeType": "YulIdentifier",
-                          "src": "6172:3:10"
+                          "src": "6532:3:10"
                         },
                         "nodeType": "YulFunctionCall",
-                        "src": "6172:17:10"
+                        "src": "6532:17:10"
                       }
                     ],
                     "functionName": {
                       "name": "abi_encode_t_rational_0_by_1_to_t_uint256_fromStack",
                       "nodeType": "YulIdentifier",
-                      "src": "6111:51:10"
+                      "src": "6471:51:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "6111:79:10"
+                    "src": "6471:79:10"
                   },
                   "nodeType": "YulExpressionStatement",
-                  "src": "6111:79:10"
+                  "src": "6471:79:10"
                 },
                 {
                   "expression": {
@@ -4105,19 +4277,19 @@
                       {
                         "name": "value1",
                         "nodeType": "YulIdentifier",
-                        "src": "6244:6:10"
+                        "src": "6604:6:10"
                       },
                       {
                         "arguments": [
                           {
                             "name": "headStart",
                             "nodeType": "YulIdentifier",
-                            "src": "6257:9:10"
+                            "src": "6617:9:10"
                           },
                           {
                             "kind": "number",
                             "nodeType": "YulLiteral",
-                            "src": "6268:2:10",
+                            "src": "6628:2:10",
                             "type": "",
                             "value": "32"
                           }
@@ -4125,22 +4297,22 @@
                         "functionName": {
                           "name": "add",
                           "nodeType": "YulIdentifier",
-                          "src": "6253:3:10"
+                          "src": "6613:3:10"
                         },
                         "nodeType": "YulFunctionCall",
-                        "src": "6253:18:10"
+                        "src": "6613:18:10"
                       }
                     ],
                     "functionName": {
                       "name": "abi_encode_t_uint256_to_t_uint256_fromStack",
                       "nodeType": "YulIdentifier",
-                      "src": "6200:43:10"
+                      "src": "6560:43:10"
                     },
                     "nodeType": "YulFunctionCall",
-                    "src": "6200:72:10"
+                    "src": "6560:72:10"
                   },
                   "nodeType": "YulExpressionStatement",
-                  "src": "6200:72:10"
+                  "src": "6560:72:10"
                 }
               ]
             },
@@ -4150,19 +4322,19 @@
               {
                 "name": "headStart",
                 "nodeType": "YulTypedName",
-                "src": "6029:9:10",
+                "src": "6389:9:10",
                 "type": ""
               },
               {
                 "name": "value1",
                 "nodeType": "YulTypedName",
-                "src": "6041:6:10",
+                "src": "6401:6:10",
                 "type": ""
               },
               {
                 "name": "value0",
                 "nodeType": "YulTypedName",
-                "src": "6049:6:10",
+                "src": "6409:6:10",
                 "type": ""
               }
             ],
@@ -4170,15 +4342,15 @@
               {
                 "name": "tail",
                 "nodeType": "YulTypedName",
-                "src": "6060:4:10",
+                "src": "6420:4:10",
                 "type": ""
               }
             ],
-            "src": "5931:348:10"
+            "src": "6291:348:10"
           }
         ]
       },
-      "contents": "{\n\n    function allocate_unbounded() -> memPtr {\n        memPtr := mload(64)\n    }\n\n    function revert_error_dbdddcbe895c83990c08b3492a0e83918d802a52331272ac6fdb6a7c4aea3b1b() {\n        revert(0, 0)\n    }\n\n    function revert_error_c1322bf8034eace5e0b5c7295db60986aa89aae5e0ea0873e4689e076861a5db() {\n        revert(0, 0)\n    }\n\n    function cleanup_t_uint256(value) -> cleaned {\n        cleaned := value\n    }\n\n    function validator_revert_t_uint256(value) {\n        if iszero(eq(value, cleanup_t_uint256(value))) { revert(0, 0) }\n    }\n\n    function abi_decode_t_uint256_fromMemory(offset, end) -> value {\n        value := mload(offset)\n        validator_revert_t_uint256(value)\n    }\n\n    function revert_error_1b9f4a0a5773e33b91aa01db23bf8c55fce1411167c872835e7fa00a4f17d46d() {\n        revert(0, 0)\n    }\n\n    function round_up_to_mul_of_32(value) -> result {\n        result := and(add(value, 31), not(31))\n    }\n\n    function panic_error_0x41() {\n        mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n        mstore(4, 0x41)\n        revert(0, 0x24)\n    }\n\n    function finalize_allocation(memPtr, size) {\n        let newFreePtr := add(memPtr, round_up_to_mul_of_32(size))\n        // protect against overflow\n        if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error_0x41() }\n        mstore(64, newFreePtr)\n    }\n\n    function allocate_memory(size) -> memPtr {\n        memPtr := allocate_unbounded()\n        finalize_allocation(memPtr, size)\n    }\n\n    function array_allocation_size_t_array$_t_address_$dyn_memory_ptr(length) -> size {\n        // Make sure we can allocate memory without overflow\n        if gt(length, 0xffffffffffffffff) { panic_error_0x41() }\n\n        size := mul(length, 0x20)\n\n        // add length slot\n        size := add(size, 0x20)\n\n    }\n\n    function revert_error_81385d8c0b31fffe14be1da910c8bd3a80be4cfa248e04f42ec0faea3132a8ef() {\n        revert(0, 0)\n    }\n\n    function cleanup_t_uint160(value) -> cleaned {\n        cleaned := and(value, 0xffffffffffffffffffffffffffffffffffffffff)\n    }\n\n    function cleanup_t_address(value) -> cleaned {\n        cleaned := cleanup_t_uint160(value)\n    }\n\n    function validator_revert_t_address(value) {\n        if iszero(eq(value, cleanup_t_address(value))) { revert(0, 0) }\n    }\n\n    function abi_decode_t_address_fromMemory(offset, end) -> value {\n        value := mload(offset)\n        validator_revert_t_address(value)\n    }\n\n    // address[]\n    function abi_decode_available_length_t_array$_t_address_$dyn_memory_ptr_fromMemory(offset, length, end) -> array {\n        array := allocate_memory(array_allocation_size_t_array$_t_address_$dyn_memory_ptr(length))\n        let dst := array\n\n        mstore(array, length)\n        dst := add(array, 0x20)\n\n        let srcEnd := add(offset, mul(length, 0x20))\n        if gt(srcEnd, end) {\n            revert_error_81385d8c0b31fffe14be1da910c8bd3a80be4cfa248e04f42ec0faea3132a8ef()\n        }\n        for { let src := offset } lt(src, srcEnd) { src := add(src, 0x20) }\n        {\n\n            let elementPos := src\n\n            mstore(dst, abi_decode_t_address_fromMemory(elementPos, end))\n            dst := add(dst, 0x20)\n        }\n    }\n\n    // address[]\n    function abi_decode_t_array$_t_address_$dyn_memory_ptr_fromMemory(offset, end) -> array {\n        if iszero(slt(add(offset, 0x1f), end)) { revert_error_1b9f4a0a5773e33b91aa01db23bf8c55fce1411167c872835e7fa00a4f17d46d() }\n        let length := mload(offset)\n        array := abi_decode_available_length_t_array$_t_address_$dyn_memory_ptr_fromMemory(add(offset, 0x20), length, end)\n    }\n\n    function abi_decode_tuple_t_uint256t_array$_t_address_$dyn_memory_ptrt_array$_t_address_$dyn_memory_ptr_fromMemory(headStart, dataEnd) -> value0, value1, value2 {\n        if slt(sub(dataEnd, headStart), 96) { revert_error_dbdddcbe895c83990c08b3492a0e83918d802a52331272ac6fdb6a7c4aea3b1b() }\n\n        {\n\n            let offset := 0\n\n            value0 := abi_decode_t_uint256_fromMemory(add(headStart, offset), dataEnd)\n        }\n\n        {\n\n            let offset := mload(add(headStart, 32))\n            if gt(offset, 0xffffffffffffffff) { revert_error_c1322bf8034eace5e0b5c7295db60986aa89aae5e0ea0873e4689e076861a5db() }\n\n            value1 := abi_decode_t_array$_t_address_$dyn_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n        }\n\n        {\n\n            let offset := mload(add(headStart, 64))\n            if gt(offset, 0xffffffffffffffff) { revert_error_c1322bf8034eace5e0b5c7295db60986aa89aae5e0ea0873e4689e076861a5db() }\n\n            value2 := abi_decode_t_array$_t_address_$dyn_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n        }\n\n    }\n\n    function panic_error_0x32() {\n        mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n        mstore(4, 0x32)\n        revert(0, 0x24)\n    }\n\n    function panic_error_0x11() {\n        mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n        mstore(4, 0x11)\n        revert(0, 0x24)\n    }\n\n    function increment_t_uint256(value) -> ret {\n        value := cleanup_t_uint256(value)\n        if eq(value, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) { panic_error_0x11() }\n        ret := add(value, 1)\n    }\n\n    function cleanup_t_rational_0_by_1(value) -> cleaned {\n        cleaned := value\n    }\n\n    function identity(value) -> ret {\n        ret := value\n    }\n\n    function convert_t_rational_0_by_1_to_t_uint256(value) -> converted {\n        converted := cleanup_t_uint256(identity(cleanup_t_rational_0_by_1(value)))\n    }\n\n    function abi_encode_t_rational_0_by_1_to_t_uint256_fromStack(value, pos) {\n        mstore(pos, convert_t_rational_0_by_1_to_t_uint256(value))\n    }\n\n    function abi_encode_t_uint256_to_t_uint256_fromStack(value, pos) {\n        mstore(pos, cleanup_t_uint256(value))\n    }\n\n    function abi_encode_tuple_t_rational_0_by_1_t_uint256__to_t_uint256_t_uint256__fromStack_reversed(headStart , value1, value0) -> tail {\n        tail := add(headStart, 64)\n\n        abi_encode_t_rational_0_by_1_to_t_uint256_fromStack(value0,  add(headStart, 0))\n\n        abi_encode_t_uint256_to_t_uint256_fromStack(value1,  add(headStart, 32))\n\n    }\n\n}\n",
+      "contents": "{\n\n    function allocate_unbounded() -> memPtr {\n        memPtr := mload(64)\n    }\n\n    function revert_error_dbdddcbe895c83990c08b3492a0e83918d802a52331272ac6fdb6a7c4aea3b1b() {\n        revert(0, 0)\n    }\n\n    function revert_error_c1322bf8034eace5e0b5c7295db60986aa89aae5e0ea0873e4689e076861a5db() {\n        revert(0, 0)\n    }\n\n    function cleanup_t_uint256(value) -> cleaned {\n        cleaned := value\n    }\n\n    function validator_revert_t_uint256(value) {\n        if iszero(eq(value, cleanup_t_uint256(value))) { revert(0, 0) }\n    }\n\n    function abi_decode_t_uint256_fromMemory(offset, end) -> value {\n        value := mload(offset)\n        validator_revert_t_uint256(value)\n    }\n\n    function revert_error_1b9f4a0a5773e33b91aa01db23bf8c55fce1411167c872835e7fa00a4f17d46d() {\n        revert(0, 0)\n    }\n\n    function round_up_to_mul_of_32(value) -> result {\n        result := and(add(value, 31), not(31))\n    }\n\n    function panic_error_0x41() {\n        mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n        mstore(4, 0x41)\n        revert(0, 0x24)\n    }\n\n    function finalize_allocation(memPtr, size) {\n        let newFreePtr := add(memPtr, round_up_to_mul_of_32(size))\n        // protect against overflow\n        if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error_0x41() }\n        mstore(64, newFreePtr)\n    }\n\n    function allocate_memory(size) -> memPtr {\n        memPtr := allocate_unbounded()\n        finalize_allocation(memPtr, size)\n    }\n\n    function array_allocation_size_t_array$_t_address_$dyn_memory_ptr(length) -> size {\n        // Make sure we can allocate memory without overflow\n        if gt(length, 0xffffffffffffffff) { panic_error_0x41() }\n\n        size := mul(length, 0x20)\n\n        // add length slot\n        size := add(size, 0x20)\n\n    }\n\n    function revert_error_81385d8c0b31fffe14be1da910c8bd3a80be4cfa248e04f42ec0faea3132a8ef() {\n        revert(0, 0)\n    }\n\n    function cleanup_t_uint160(value) -> cleaned {\n        cleaned := and(value, 0xffffffffffffffffffffffffffffffffffffffff)\n    }\n\n    function cleanup_t_address(value) -> cleaned {\n        cleaned := cleanup_t_uint160(value)\n    }\n\n    function validator_revert_t_address(value) {\n        if iszero(eq(value, cleanup_t_address(value))) { revert(0, 0) }\n    }\n\n    function abi_decode_t_address_fromMemory(offset, end) -> value {\n        value := mload(offset)\n        validator_revert_t_address(value)\n    }\n\n    // address[]\n    function abi_decode_available_length_t_array$_t_address_$dyn_memory_ptr_fromMemory(offset, length, end) -> array {\n        array := allocate_memory(array_allocation_size_t_array$_t_address_$dyn_memory_ptr(length))\n        let dst := array\n\n        mstore(array, length)\n        dst := add(array, 0x20)\n\n        let srcEnd := add(offset, mul(length, 0x20))\n        if gt(srcEnd, end) {\n            revert_error_81385d8c0b31fffe14be1da910c8bd3a80be4cfa248e04f42ec0faea3132a8ef()\n        }\n        for { let src := offset } lt(src, srcEnd) { src := add(src, 0x20) }\n        {\n\n            let elementPos := src\n\n            mstore(dst, abi_decode_t_address_fromMemory(elementPos, end))\n            dst := add(dst, 0x20)\n        }\n    }\n\n    // address[]\n    function abi_decode_t_array$_t_address_$dyn_memory_ptr_fromMemory(offset, end) -> array {\n        if iszero(slt(add(offset, 0x1f), end)) { revert_error_1b9f4a0a5773e33b91aa01db23bf8c55fce1411167c872835e7fa00a4f17d46d() }\n        let length := mload(offset)\n        array := abi_decode_available_length_t_array$_t_address_$dyn_memory_ptr_fromMemory(add(offset, 0x20), length, end)\n    }\n\n    function abi_decode_tuple_t_uint256t_array$_t_address_$dyn_memory_ptrt_array$_t_address_$dyn_memory_ptrt_array$_t_address_$dyn_memory_ptr_fromMemory(headStart, dataEnd) -> value0, value1, value2, value3 {\n        if slt(sub(dataEnd, headStart), 128) { revert_error_dbdddcbe895c83990c08b3492a0e83918d802a52331272ac6fdb6a7c4aea3b1b() }\n\n        {\n\n            let offset := 0\n\n            value0 := abi_decode_t_uint256_fromMemory(add(headStart, offset), dataEnd)\n        }\n\n        {\n\n            let offset := mload(add(headStart, 32))\n            if gt(offset, 0xffffffffffffffff) { revert_error_c1322bf8034eace5e0b5c7295db60986aa89aae5e0ea0873e4689e076861a5db() }\n\n            value1 := abi_decode_t_array$_t_address_$dyn_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n        }\n\n        {\n\n            let offset := mload(add(headStart, 64))\n            if gt(offset, 0xffffffffffffffff) { revert_error_c1322bf8034eace5e0b5c7295db60986aa89aae5e0ea0873e4689e076861a5db() }\n\n            value2 := abi_decode_t_array$_t_address_$dyn_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n        }\n\n        {\n\n            let offset := mload(add(headStart, 96))\n            if gt(offset, 0xffffffffffffffff) { revert_error_c1322bf8034eace5e0b5c7295db60986aa89aae5e0ea0873e4689e076861a5db() }\n\n            value3 := abi_decode_t_array$_t_address_$dyn_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n        }\n\n    }\n\n    function panic_error_0x32() {\n        mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n        mstore(4, 0x32)\n        revert(0, 0x24)\n    }\n\n    function panic_error_0x11() {\n        mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n        mstore(4, 0x11)\n        revert(0, 0x24)\n    }\n\n    function increment_t_uint256(value) -> ret {\n        value := cleanup_t_uint256(value)\n        if eq(value, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) { panic_error_0x11() }\n        ret := add(value, 1)\n    }\n\n    function cleanup_t_rational_0_by_1(value) -> cleaned {\n        cleaned := value\n    }\n\n    function identity(value) -> ret {\n        ret := value\n    }\n\n    function convert_t_rational_0_by_1_to_t_uint256(value) -> converted {\n        converted := cleanup_t_uint256(identity(cleanup_t_rational_0_by_1(value)))\n    }\n\n    function abi_encode_t_rational_0_by_1_to_t_uint256_fromStack(value, pos) {\n        mstore(pos, convert_t_rational_0_by_1_to_t_uint256(value))\n    }\n\n    function abi_encode_t_uint256_to_t_uint256_fromStack(value, pos) {\n        mstore(pos, cleanup_t_uint256(value))\n    }\n\n    function abi_encode_tuple_t_rational_0_by_1_t_uint256__to_t_uint256_t_uint256__fromStack_reversed(headStart , value1, value0) -> tail {\n        tail := add(headStart, 64)\n\n        abi_encode_t_rational_0_by_1_to_t_uint256_fromStack(value0,  add(headStart, 0))\n\n        abi_encode_t_uint256_to_t_uint256_fromStack(value1,  add(headStart, 32))\n\n    }\n\n}\n",
       "id": 10,
       "language": "Yul",
       "name": "#utility.yul"
@@ -24541,9 +24713,9 @@
       "name": "#utility.yul"
     }
   ],
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-  "source": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.10;\nimport \"@openzeppelin/contracts/access/AccessControlEnumerable.sol\";\n\n/**\n * MultiSigWallet with timelocker\n */\ncontract BEMultiSigWallet is AccessControlEnumerable {\n  bytes32 public constant TIMELOCK_ADMIN_ROLE =\n    keccak256(\"TIMELOCK_ADMIN_ROLE\");\n  bytes32 public constant PROPOSER_ROLE = keccak256(\"PROPOSER_ROLE\");\n  bytes32 public constant EXECUTOR_ROLE = keccak256(\"EXECUTOR_ROLE\");\n  uint256 internal constant _DONE_TIMESTAMP = uint256(1);\n\n  mapping(bytes32 => uint256) private _timestamps;\n  mapping(bytes32 => mapping(address => bool)) public confirmations;\n  uint256 public minDelay;\n  uint256 public required;\n\n  /**\n   * @dev Emitted when a call is scheduled as part of operation `id`.\n   */\n  event CallScheduled(\n    bytes32 indexed id,\n    uint256 indexed index,\n    address target,\n    uint256 value,\n    bytes data,\n    bytes32 predecessor,\n    uint256 delay\n  );\n\n  /**\n   * @dev Emitted when a call is performed as part of operation `id`.\n   */\n  event CallExecuted(\n    bytes32 indexed id,\n    uint256 indexed index,\n    address target,\n    uint256 value,\n    bytes data\n  );\n\n  /**\n   * @dev Emitted when operation `id` is cancelled.\n   */\n  event Cancelled(bytes32 indexed id);\n\n  event Confirmation(address indexed sender, bytes32 id);\n\n  event Revocation(address indexed sender, bytes32 id);\n\n  /**\n   * @dev Emitted when the minimum delay for future operations is modified.\n   */\n  event MinDelayChange(uint256 oldDuration, uint256 newDuration);\n  /**\n   * @dev Emitted when the number of required confimations is modified.\n   */\n  event RequirementChange(uint256 oldDuration, uint256 newDuration);\n\n  modifier onlyWallet() {\n    require(\n      msg.sender == address(this),\n      \"BEMultiSigWallet: caller must be wallet\"\n    );\n    _;\n  }\n\n  /**\n   * @dev Initializes the contract with a given `minDelay`.\n   */\n  constructor(\n    uint256 _minDelay,\n    address[] memory proposers,\n    address[] memory executors\n  ) {\n    _setRoleAdmin(TIMELOCK_ADMIN_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(PROPOSER_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(EXECUTOR_ROLE, TIMELOCK_ADMIN_ROLE);\n\n    // deployer + self administration\n    _setupRole(TIMELOCK_ADMIN_ROLE, _msgSender());\n    _setupRole(TIMELOCK_ADMIN_ROLE, address(this));\n\n    // register proposers\n    for (uint256 i = 0; i < proposers.length; ++i) {\n      _setupRole(PROPOSER_ROLE, proposers[i]);\n    }\n\n    // register executors\n    for (uint256 i = 0; i < executors.length; ++i) {\n      _setupRole(EXECUTOR_ROLE, executors[i]);\n    }\n\n    minDelay = _minDelay;\n    emit MinDelayChange(0, minDelay);\n  }\n\n  /**\n   * @dev Modifier to make a function callable only by a certain role. In\n   * addition to checking the sender's role, `address(0)` 's role is also\n   * considered. Granting a role to `address(0)` is equivalent to enabling\n   * this role for everyone.\n   */\n  modifier onlyRoleOrOpenRole(bytes32 role) {\n    if (!hasRole(role, address(0))) {\n      _checkRole(role, _msgSender());\n    }\n    _;\n  }\n\n  /**\n   * @dev Contract might receive/hold ETH as part of the maintenance process.\n   */\n  receive() external payable {}\n\n  /**\n   * @dev Returns whether an id correspond to a registered operation. This\n   * includes both Pending, Ready and Done operations.\n   */\n  function isOperation(bytes32 id) public view virtual returns (bool pending) {\n    return getTimestamp(id) > 0;\n  }\n\n  /**\n   * @dev Returns whether an operation is pending or not.\n   */\n  function isOperationPending(\n    bytes32 id\n  ) public view virtual returns (bool pending) {\n    return getTimestamp(id) > _DONE_TIMESTAMP;\n  }\n\n  function isConfirmed(bytes32 id) public view returns (bool ready) {\n    uint256 count = 0;\n    uint256 executorCount = getRoleMemberCount(EXECUTOR_ROLE);\n    for (uint256 i = 0; i < executorCount; i++) {\n      if (confirmations[id][getRoleMember(EXECUTOR_ROLE, i)]) count += 1;\n      if (count == required) return true;\n    }\n  }\n\n  /**\n   * @dev Returns whether an operation is ready or not.\n   */\n  function isOperationReady(\n    bytes32 id\n  ) public view virtual returns (bool ready) {\n    uint256 timestamp = getTimestamp(id);\n    return timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp;\n  }\n\n  /**\n   * @dev Returns whether an operation is done or not.\n   */\n  function isOperationDone(bytes32 id) public view virtual returns (bool done) {\n    return getTimestamp(id) == _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Returns the timestamp at with an operation becomes ready (0 for\n   * unset operations, 1 for done operations).\n   */\n  function getTimestamp(\n    bytes32 id\n  ) public view virtual returns (uint256 timestamp) {\n    return _timestamps[id];\n  }\n\n  /**\n   * @dev Returns the identifier of an operation containing a single\n   * transaction.\n   */\n  function hashOperation(\n    address target,\n    uint256 value,\n    bytes calldata data,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public pure virtual returns (bytes32 hash) {\n    return keccak256(abi.encode(target, value, data, predecessor, salt));\n  }\n\n  /**\n   * @dev Returns the identifier of an operation containing a batch of\n   * transactions.\n   */\n  function hashOperationBatch(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public pure virtual returns (bytes32 hash) {\n    return keccak256(abi.encode(targets, values, datas, predecessor, salt));\n  }\n\n  /**\n   * @dev Schedule an operation containing a single transaction.\n   *\n   * Emits a {CallScheduled} event.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function schedule(\n    address target,\n    uint256 value,\n    bytes calldata data,\n    bytes32 predecessor,\n    bytes32 salt,\n    uint256 delay\n  ) public virtual onlyRole(PROPOSER_ROLE) {\n    bytes32 id = hashOperation(target, value, data, predecessor, salt);\n    _schedule(id, delay);\n    emit CallScheduled(id, 0, target, value, data, predecessor, delay);\n  }\n\n  /**\n   * @dev Schedule an operation containing a batch of transactions.\n   *\n   * Emits one {CallScheduled} event per transaction in the batch.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function scheduleBatch(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt,\n    uint256 delay\n  ) public virtual onlyRole(PROPOSER_ROLE) {\n    require(\n      targets.length == values.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n    require(\n      targets.length == datas.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n\n    bytes32 id = hashOperationBatch(targets, values, datas, predecessor, salt);\n    _schedule(id, delay);\n    for (uint256 i = 0; i < targets.length; ++i) {\n      emit CallScheduled(\n        id,\n        i,\n        targets[i],\n        values[i],\n        datas[i],\n        predecessor,\n        delay\n      );\n    }\n  }\n\n  /**\n   * @dev Schedule an operation that is to becomes valid after a given delay.\n   */\n  function _schedule(bytes32 id, uint256 delay) private {\n    require(!isOperation(id), \"BEMultiSigWallet: operation already scheduled\");\n    require(delay >= minDelay, \"BEMultiSigWallet: insufficient delay\");\n    _timestamps[id] = block.timestamp + delay;\n  }\n\n  /**\n   * @dev Cancel an operation.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function cancel(bytes32 id) public virtual onlyRole(PROPOSER_ROLE) {\n    require(\n      isOperationPending(id),\n      \"BEMultiSigWallet: operation cannot be cancelled\"\n    );\n    delete _timestamps[id];\n\n    emit Cancelled(id);\n  }\n\n  /**\n   * @dev Allows an executor to confirm a transaction.\n   * Requirements\n   * - the caller must have the 'executor' role.\n   */\n  function confirmTransaction(\n    bytes32 id\n  ) public onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    require(\n      isOperationPending(id),\n      \"BEMultiSigWallet: operation not exist or finished\"\n    );\n    confirmations[id][msg.sender] = true;\n    emit Confirmation(msg.sender, id);\n  }\n\n  /**\n   *  @dev Allows an executor to confirm multiple transactions.\n   */\n  function confirmTransactionBatch(\n    bytes32[] calldata ids\n  ) public onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    for (uint256 i = 0; i < ids.length; ++i) {\n      confirmTransaction(ids[i]);\n    }\n  }\n\n  /**\n   * @dev Allows an executor to revoke a confirmation for a transaction.\n   * Requirements\n   * - the caller must have the 'executor' role.\n   */\n  function revokeConfirmation(\n    bytes32 id\n  ) public onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    require(\n      isOperationPending(id),\n      \"BEMultiSigWallet: operation not exist or finished\"\n    );\n    confirmations[id][msg.sender] = false;\n    emit Revocation(msg.sender, id);\n  }\n\n  /**\n   * @dev Allows an executor to revoke multiple confirmations for a transaction.\n   */\n  function revokeConfirmationBatch(\n    bytes32[] calldata ids\n  ) public onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    for (uint256 i = 0; i < ids.length; ++i) {\n      revokeConfirmation(ids[i]);\n    }\n  }\n\n  /**\n   * @dev Execute an (ready) operation containing a single transaction.\n   *\n   * Emits a {CallExecuted} event.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'executor' role.\n   */\n  function execute(\n    address target,\n    uint256 value,\n    bytes calldata data,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    bytes32 id = hashOperation(target, value, data, predecessor, salt);\n    _beforeCall(id, predecessor);\n    _call(id, 0, target, value, data);\n    _afterCall(id);\n  }\n\n  /**\n   * @dev Execute an (ready) operation containing a batch of transactions.\n   *\n   * Emits one {CallExecuted} event per transaction in the batch.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'executor' role.\n   */\n  function executeBatch(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    require(\n      targets.length == values.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n    require(\n      targets.length == datas.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n\n    bytes32 id = hashOperationBatch(targets, values, datas, predecessor, salt);\n    _beforeCall(id, predecessor);\n    for (uint256 i = 0; i < targets.length; ++i) {\n      _call(id, i, targets[i], values[i], datas[i]);\n    }\n    _afterCall(id);\n  }\n\n  /**\n   * @dev Checks before execution of an operation's calls.\n   */\n  function _beforeCall(bytes32 id, bytes32 predecessor) private view {\n    require(isOperationReady(id), \"BEMultiSigWallet: operation is not ready\");\n    require(\n      isConfirmed(id),\n      \"BEMultiSigWallet: operation not reach required confirmations\"\n    );\n    require(\n      predecessor == bytes32(0) || isOperationDone(predecessor),\n      \"BEMultiSigWallet: missing dependency\"\n    );\n  }\n\n  /**\n   * @dev Checks after execution of an operation's calls.\n   */\n  function _afterCall(bytes32 id) private {\n    require(isOperationReady(id), \"BEMultiSigWallet: operation is not ready\");\n    _timestamps[id] = _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Execute an operation's call.\n   *\n   * Emits a {CallExecuted} event.\n   */\n  function _call(\n    bytes32 id,\n    uint256 index,\n    address target,\n    uint256 value,\n    bytes calldata data\n  ) private {\n    (bool success, ) = target.call{value: value}(data);\n    require(success, \"BEMultiSigWallet: underlying transaction reverted\");\n\n    emit CallExecuted(id, index, target, value, data);\n  }\n\n  /**\n   * @dev Changes the minimum wallet duration for future operations.\n   *\n   * Emits a {MinDelayChange} event.\n   *\n   * Requirements:\n   *\n   * - the caller must be the wallet itself. This can only be achieved by scheduling and later executing\n   * an operation where the wallet is the target and the data is the ABI-encoded call to this function.\n   */\n  function changeDelay(uint256 _minDelay) external virtual onlyWallet {\n    emit MinDelayChange(minDelay, _minDelay);\n    minDelay = _minDelay;\n  }\n\n  /**\n   * @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.\n   * @param _required Number of required confirmations.\n   */\n  function changeRequirement(uint256 _required) external virtual onlyWallet {\n    emit RequirementChange(required, _required);\n    required = _required;\n  }\n}\n",
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+  "source": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.10;\nimport \"@openzeppelin/contracts/access/AccessControlEnumerable.sol\";\n\n/**\n * MultiSigWallet with timelocker\n */\ncontract BEMultiSigWallet is AccessControlEnumerable {\n  bytes32 public constant TIMELOCK_ADMIN_ROLE =\n    keccak256(\"TIMELOCK_ADMIN_ROLE\");\n  bytes32 public constant PROPOSER_ROLE = keccak256(\"PROPOSER_ROLE\");\n  bytes32 public constant EXECUTOR_ROLE = keccak256(\"EXECUTOR_ROLE\");\n  bytes32 public constant CONFIRM_ROLE = keccak256(\"CONFIRM_ROLE\");\n  uint256 internal constant _DONE_TIMESTAMP = uint256(1);\n\n  mapping(bytes32 => uint256) private _timestamps;\n  mapping(bytes32 => mapping(address => bool)) public confirmations;\n  uint256 public minDelay;\n  uint256 public required;\n\n  /**\n   * @dev Emitted when a call is scheduled as part of operation `id`.\n   */\n  event CallScheduled(\n    bytes32 indexed id,\n    uint256 indexed index,\n    address target,\n    uint256 value,\n    bytes data,\n    bytes32 predecessor,\n    uint256 delay\n  );\n\n  /**\n   * @dev Emitted when a call is performed as part of operation `id`.\n   */\n  event CallExecuted(\n    bytes32 indexed id,\n    uint256 indexed index,\n    address target,\n    uint256 value,\n    bytes data\n  );\n\n  /**\n   * @dev Emitted when operation `id` is cancelled.\n   */\n  event Cancelled(bytes32 indexed id);\n\n  event Confirmation(address indexed sender, bytes32 id);\n\n  event Revocation(address indexed sender, bytes32 id);\n\n  /**\n   * @dev Emitted when the minimum delay for future operations is modified.\n   */\n  event MinDelayChange(uint256 oldDuration, uint256 newDuration);\n  /**\n   * @dev Emitted when the number of required confimations is modified.\n   */\n  event RequirementChange(uint256 oldDuration, uint256 newDuration);\n\n  modifier onlyWallet() {\n    require(\n      msg.sender == address(this),\n      \"BEMultiSigWallet: caller must be wallet\"\n    );\n    _;\n  }\n\n  /**\n   * @dev Initializes the contract with a given `minDelay`.\n   */\n  constructor(\n    uint256 _minDelay,\n    address[] memory proposers,\n    address[] memory confirmers,\n    address[] memory executors\n  ) {\n    _setRoleAdmin(TIMELOCK_ADMIN_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(PROPOSER_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(EXECUTOR_ROLE, TIMELOCK_ADMIN_ROLE);\n    _setRoleAdmin(CONFIRM_ROLE, TIMELOCK_ADMIN_ROLE);\n\n    // deployer + self administration\n    _setupRole(TIMELOCK_ADMIN_ROLE, _msgSender());\n    _setupRole(TIMELOCK_ADMIN_ROLE, address(this));\n\n    // register proposers\n    for (uint256 i = 0; i < proposers.length; ++i) {\n      _setupRole(PROPOSER_ROLE, proposers[i]);\n    }\n\n    // register confirmers\n    for (uint256 i = 0; i < confirmers.length; ++i) {\n      _setupRole(CONFIRM_ROLE, confirmers[i]);\n    }\n\n    // register executors\n    for (uint256 i = 0; i < executors.length; ++i) {\n      _setupRole(EXECUTOR_ROLE, executors[i]);\n    }\n\n    minDelay = _minDelay;\n    emit MinDelayChange(0, minDelay);\n  }\n\n  /**\n   * @dev Modifier to make a function callable only by a certain role. In\n   * addition to checking the sender's role, `address(0)` 's role is also\n   * considered. Granting a role to `address(0)` is equivalent to enabling\n   * this role for everyone.\n   */\n  modifier onlyRoleOrOpenRole(bytes32 role) {\n    if (!hasRole(role, address(0))) {\n      _checkRole(role, _msgSender());\n    }\n    _;\n  }\n\n  /**\n   * @dev Contract might receive/hold ETH as part of the maintenance process.\n   */\n  receive() external payable {}\n\n  /**\n   * @dev Returns whether an id correspond to a registered operation. This\n   * includes both Pending, Ready and Done operations.\n   */\n  function isOperation(bytes32 id) public view virtual returns (bool pending) {\n    return getTimestamp(id) > 0;\n  }\n\n  /**\n   * @dev Returns whether an operation is pending or not.\n   */\n  function isOperationPending(\n    bytes32 id\n  ) public view virtual returns (bool pending) {\n    return getTimestamp(id) > _DONE_TIMESTAMP;\n  }\n\n  function isConfirmed(bytes32 id) public view returns (bool ready) {\n    uint256 count = 0;\n    uint256 executorCount = getRoleMemberCount(EXECUTOR_ROLE);\n    for (uint256 i = 0; i < executorCount; i++) {\n      if (confirmations[id][getRoleMember(EXECUTOR_ROLE, i)]) count += 1;\n      if (count == required) return true;\n    }\n  }\n\n  /**\n   * @dev Returns whether an operation is ready or not.\n   */\n  function isOperationReady(\n    bytes32 id\n  ) public view virtual returns (bool ready) {\n    uint256 timestamp = getTimestamp(id);\n    return timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp;\n  }\n\n  /**\n   * @dev Returns whether an operation is done or not.\n   */\n  function isOperationDone(bytes32 id) public view virtual returns (bool done) {\n    return getTimestamp(id) == _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Returns the timestamp at with an operation becomes ready (0 for\n   * unset operations, 1 for done operations).\n   */\n  function getTimestamp(\n    bytes32 id\n  ) public view virtual returns (uint256 timestamp) {\n    return _timestamps[id];\n  }\n\n  /**\n   * @dev Returns the identifier of an operation containing a single\n   * transaction.\n   */\n  function hashOperation(\n    address target,\n    uint256 value,\n    bytes calldata data,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public pure virtual returns (bytes32 hash) {\n    return keccak256(abi.encode(target, value, data, predecessor, salt));\n  }\n\n  /**\n   * @dev Returns the identifier of an operation containing a batch of\n   * transactions.\n   */\n  function hashOperationBatch(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public pure virtual returns (bytes32 hash) {\n    return keccak256(abi.encode(targets, values, datas, predecessor, salt));\n  }\n\n  /**\n   * @dev Schedule an operation containing a single transaction.\n   *\n   * Emits a {CallScheduled} event.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function schedule(\n    address target,\n    uint256 value,\n    bytes calldata data,\n    bytes32 predecessor,\n    bytes32 salt,\n    uint256 delay\n  ) public virtual onlyRole(PROPOSER_ROLE) {\n    bytes32 id = hashOperation(target, value, data, predecessor, salt);\n    _schedule(id, delay);\n    emit CallScheduled(id, 0, target, value, data, predecessor, delay);\n  }\n\n  /**\n   * @dev Schedule an operation containing a batch of transactions.\n   *\n   * Emits one {CallScheduled} event per transaction in the batch.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function scheduleBatch(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt,\n    uint256 delay\n  ) public virtual onlyRole(PROPOSER_ROLE) {\n    require(\n      targets.length == values.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n    require(\n      targets.length == datas.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n\n    bytes32 id = hashOperationBatch(targets, values, datas, predecessor, salt);\n    _schedule(id, delay);\n    for (uint256 i = 0; i < targets.length; ++i) {\n      emit CallScheduled(\n        id,\n        i,\n        targets[i],\n        values[i],\n        datas[i],\n        predecessor,\n        delay\n      );\n    }\n  }\n\n  /**\n   * @dev Schedule an operation that is to becomes valid after a given delay.\n   */\n  function _schedule(bytes32 id, uint256 delay) private {\n    require(!isOperation(id), \"BEMultiSigWallet: operation already scheduled\");\n    require(delay >= minDelay, \"BEMultiSigWallet: insufficient delay\");\n    _timestamps[id] = block.timestamp + delay;\n  }\n\n  /**\n   * @dev Cancel an operation.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'proposer' role.\n   */\n  function cancel(bytes32 id) public virtual onlyRole(PROPOSER_ROLE) {\n    require(\n      isOperationPending(id),\n      \"BEMultiSigWallet: operation cannot be cancelled\"\n    );\n    delete _timestamps[id];\n\n    emit Cancelled(id);\n  }\n\n  /**\n   * @dev Allows an executor to confirm a transaction.\n   * Requirements\n   * - the caller must have the 'executor' role.\n   */\n  function confirmTransaction(\n    bytes32 id\n  ) public onlyRoleOrOpenRole(CONFIRM_ROLE) {\n    require(\n      isOperationPending(id),\n      \"BEMultiSigWallet: operation not exist or finished\"\n    );\n    confirmations[id][msg.sender] = true;\n    emit Confirmation(msg.sender, id);\n  }\n\n  /**\n   *  @dev Allows an executor to confirm multiple transactions.\n   */\n  function confirmTransactionBatch(\n    bytes32[] calldata ids\n  ) public onlyRoleOrOpenRole(CONFIRM_ROLE) {\n    for (uint256 i = 0; i < ids.length; ++i) {\n      confirmTransaction(ids[i]);\n    }\n  }\n\n  /**\n   * @dev Allows an executor to revoke a confirmation for a transaction.\n   * Requirements\n   * - the caller must have the 'executor' role.\n   */\n  function revokeConfirmation(\n    bytes32 id\n  ) public onlyRoleOrOpenRole(CONFIRM_ROLE) {\n    require(\n      isOperationPending(id),\n      \"BEMultiSigWallet: operation not exist or finished\"\n    );\n    confirmations[id][msg.sender] = false;\n    emit Revocation(msg.sender, id);\n  }\n\n  /**\n   * @dev Allows an executor to revoke multiple confirmations for a transaction.\n   */\n  function revokeConfirmationBatch(\n    bytes32[] calldata ids\n  ) public onlyRoleOrOpenRole(CONFIRM_ROLE) {\n    for (uint256 i = 0; i < ids.length; ++i) {\n      revokeConfirmation(ids[i]);\n    }\n  }\n\n  /**\n   * @dev Execute an (ready) operation containing a single transaction.\n   *\n   * Emits a {CallExecuted} event.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'executor' role.\n   */\n  function execute(\n    address target,\n    uint256 value,\n    bytes calldata data,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    bytes32 id = hashOperation(target, value, data, predecessor, salt);\n    _beforeCall(id, predecessor);\n    _call(id, 0, target, value, data);\n    _afterCall(id);\n  }\n\n  /**\n   * @dev Execute an (ready) operation containing a batch of transactions.\n   *\n   * Emits one {CallExecuted} event per transaction in the batch.\n   *\n   * Requirements:\n   *\n   * - the caller must have the 'executor' role.\n   */\n  function executeBatch(\n    address[] calldata targets,\n    uint256[] calldata values,\n    bytes[] calldata datas,\n    bytes32 predecessor,\n    bytes32 salt\n  ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n    require(\n      targets.length == values.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n    require(\n      targets.length == datas.length,\n      \"BEMultiSigWallet: length mismatch\"\n    );\n\n    bytes32 id = hashOperationBatch(targets, values, datas, predecessor, salt);\n    _beforeCall(id, predecessor);\n    for (uint256 i = 0; i < targets.length; ++i) {\n      _call(id, i, targets[i], values[i], datas[i]);\n    }\n    _afterCall(id);\n  }\n\n  /**\n   * @dev Checks before execution of an operation's calls.\n   */\n  function _beforeCall(bytes32 id, bytes32 predecessor) private view {\n    require(isOperationReady(id), \"BEMultiSigWallet: operation is not ready\");\n    require(\n      isConfirmed(id),\n      \"BEMultiSigWallet: operation not reach required confirmations\"\n    );\n    require(\n      predecessor == bytes32(0) || isOperationDone(predecessor),\n      \"BEMultiSigWallet: missing dependency\"\n    );\n  }\n\n  /**\n   * @dev Checks after execution of an operation's calls.\n   */\n  function _afterCall(bytes32 id) private {\n    require(isOperationReady(id), \"BEMultiSigWallet: operation is not ready\");\n    _timestamps[id] = _DONE_TIMESTAMP;\n  }\n\n  /**\n   * @dev Execute an operation's call.\n   *\n   * Emits a {CallExecuted} event.\n   */\n  function _call(\n    bytes32 id,\n    uint256 index,\n    address target,\n    uint256 value,\n    bytes calldata data\n  ) private {\n    (bool success, ) = target.call{value: value}(data);\n    require(success, \"BEMultiSigWallet: underlying transaction reverted\");\n\n    emit CallExecuted(id, index, target, value, data);\n  }\n\n  /**\n   * @dev Changes the minimum wallet duration for future operations.\n   *\n   * Emits a {MinDelayChange} event.\n   *\n   * Requirements:\n   *\n   * - the caller must be the wallet itself. This can only be achieved by scheduling and later executing\n   * an operation where the wallet is the target and the data is the ABI-encoded call to this function.\n   */\n  function changeDelay(uint256 _minDelay) external virtual onlyWallet {\n    emit MinDelayChange(minDelay, _minDelay);\n    minDelay = _minDelay;\n  }\n\n  /**\n   * @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.\n   * @param _required Number of required confirmations.\n   */\n  function changeRequirement(uint256 _required) external virtual onlyWallet {\n    emit RequirementChange(required, _required);\n    required = _required;\n  }\n}\n",
   "sourcePath": "/Users/zhl/Documents/workspace/crypto/becrypto/contracts/core/BEMultiSigWallet.sol",
   "ast": {
     "absolutePath": "project:/contracts/core/BEMultiSigWallet.sol",
@@ -24555,7 +24727,7 @@
         433
       ],
       "BEMultiSigWallet": [
-        2391
+        2424
       ],
       "Context": [
         553
@@ -24579,7 +24751,7 @@
         756
       ]
     },
-    "id": 2392,
+    "id": 2425,
     "license": "MIT",
     "nodeType": "SourceUnit",
     "nodes": [
@@ -24599,7 +24771,7 @@
         "id": 1394,
         "nameLocation": "-1:-1:-1",
         "nodeType": "ImportDirective",
-        "scope": 2392,
+        "scope": 2425,
         "sourceUnit": 434,
         "src": "56:68:9",
         "symbolAliases": [],
@@ -24631,9 +24803,9 @@
           "text": " MultiSigWallet with timelocker"
         },
         "fullyImplemented": true,
-        "id": 2391,
+        "id": 2424,
         "linearizedBaseContracts": [
-          2391,
+          2424,
           433,
           308,
           780,
@@ -24654,7 +24826,7 @@
             "name": "TIMELOCK_ADMIN_ROLE",
             "nameLocation": "249:19:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2391,
+            "scope": 2424,
             "src": "225:82:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -24734,7 +24906,7 @@
             "name": "PROPOSER_ROLE",
             "nameLocation": "335:13:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2391,
+            "scope": 2424,
             "src": "311:66:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -24814,7 +24986,7 @@
             "name": "EXECUTOR_ROLE",
             "nameLocation": "405:13:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2391,
+            "scope": 2424,
             "src": "381:66:9",
             "stateVariable": true,
             "storageLocation": "default",
@@ -24888,13 +25060,93 @@
           },
           {
             "constant": true,
-            "id": 1418,
+            "functionSelector": "c3a6b147",
+            "id": 1417,
+            "mutability": "constant",
+            "name": "CONFIRM_ROLE",
+            "nameLocation": "475:12:9",
+            "nodeType": "VariableDeclaration",
+            "scope": 2424,
+            "src": "451:64:9",
+            "stateVariable": true,
+            "storageLocation": "default",
+            "typeDescriptions": {
+              "typeIdentifier": "t_bytes32",
+              "typeString": "bytes32"
+            },
+            "typeName": {
+              "id": 1413,
+              "name": "bytes32",
+              "nodeType": "ElementaryTypeName",
+              "src": "451:7:9",
+              "typeDescriptions": {
+                "typeIdentifier": "t_bytes32",
+                "typeString": "bytes32"
+              }
+            },
+            "value": {
+              "arguments": [
+                {
+                  "hexValue": "434f4e4649524d5f524f4c45",
+                  "id": 1415,
+                  "isConstant": false,
+                  "isLValue": false,
+                  "isPure": true,
+                  "kind": "string",
+                  "lValueRequested": false,
+                  "nodeType": "Literal",
+                  "src": "500:14:9",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_stringliteral_2c8d391a59a77fe77bf684c3caa7282a9c580767b1cb8e58353f9e201a6ede3f",
+                    "typeString": "literal_string \"CONFIRM_ROLE\""
+                  },
+                  "value": "CONFIRM_ROLE"
+                }
+              ],
+              "expression": {
+                "argumentTypes": [
+                  {
+                    "typeIdentifier": "t_stringliteral_2c8d391a59a77fe77bf684c3caa7282a9c580767b1cb8e58353f9e201a6ede3f",
+                    "typeString": "literal_string \"CONFIRM_ROLE\""
+                  }
+                ],
+                "id": 1414,
+                "name": "keccak256",
+                "nodeType": "Identifier",
+                "overloadedDeclarations": [],
+                "referencedDeclaration": 4294967288,
+                "src": "490:9:9",
+                "typeDescriptions": {
+                  "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
+                  "typeString": "function (bytes memory) pure returns (bytes32)"
+                }
+              },
+              "id": 1416,
+              "isConstant": false,
+              "isLValue": false,
+              "isPure": true,
+              "kind": "functionCall",
+              "lValueRequested": false,
+              "names": [],
+              "nodeType": "FunctionCall",
+              "src": "490:25:9",
+              "tryCall": false,
+              "typeDescriptions": {
+                "typeIdentifier": "t_bytes32",
+                "typeString": "bytes32"
+              }
+            },
+            "visibility": "public"
+          },
+          {
+            "constant": true,
+            "id": 1423,
             "mutability": "constant",
             "name": "_DONE_TIMESTAMP",
-            "nameLocation": "477:15:9",
+            "nameLocation": "545:15:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2391,
-            "src": "451:54:9",
+            "scope": 2424,
+            "src": "519:54:9",
             "stateVariable": true,
             "storageLocation": "default",
             "typeDescriptions": {
@@ -24902,10 +25154,10 @@
               "typeString": "uint256"
             },
             "typeName": {
-              "id": 1413,
+              "id": 1418,
               "name": "uint256",
               "nodeType": "ElementaryTypeName",
-              "src": "451:7:9",
+              "src": "519:7:9",
               "typeDescriptions": {
                 "typeIdentifier": "t_uint256",
                 "typeString": "uint256"
@@ -24915,14 +25167,14 @@
               "arguments": [
                 {
                   "hexValue": "31",
-                  "id": 1416,
+                  "id": 1421,
                   "isConstant": false,
                   "isLValue": false,
                   "isPure": true,
                   "kind": "number",
                   "lValueRequested": false,
                   "nodeType": "Literal",
-                  "src": "503:1:9",
+                  "src": "571:1:9",
                   "typeDescriptions": {
                     "typeIdentifier": "t_rational_1_by_1",
                     "typeString": "int_const 1"
@@ -24937,26 +25189,26 @@
                     "typeString": "int_const 1"
                   }
                 ],
-                "id": 1415,
+                "id": 1420,
                 "isConstant": false,
                 "isLValue": false,
                 "isPure": true,
                 "lValueRequested": false,
                 "nodeType": "ElementaryTypeNameExpression",
-                "src": "495:7:9",
+                "src": "563:7:9",
                 "typeDescriptions": {
                   "typeIdentifier": "t_type$_t_uint256_$",
                   "typeString": "type(uint256)"
                 },
                 "typeName": {
-                  "id": 1414,
+                  "id": 1419,
                   "name": "uint256",
                   "nodeType": "ElementaryTypeName",
-                  "src": "495:7:9",
+                  "src": "563:7:9",
                   "typeDescriptions": {}
                 }
               },
-              "id": 1417,
+              "id": 1422,
               "isConstant": false,
               "isLValue": false,
               "isPure": true,
@@ -24964,7 +25216,7 @@
               "lValueRequested": false,
               "names": [],
               "nodeType": "FunctionCall",
-              "src": "495:10:9",
+              "src": "563:10:9",
               "tryCall": false,
               "typeDescriptions": {
                 "typeIdentifier": "t_uint256",
@@ -24975,13 +25227,13 @@
           },
           {
             "constant": false,
-            "id": 1422,
+            "id": 1427,
             "mutability": "mutable",
             "name": "_timestamps",
-            "nameLocation": "546:11:9",
+            "nameLocation": "614:11:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2391,
-            "src": "510:47:9",
+            "scope": 2424,
+            "src": "578:47:9",
             "stateVariable": true,
             "storageLocation": "default",
             "typeDescriptions": {
@@ -24989,28 +25241,28 @@
               "typeString": "mapping(bytes32 => uint256)"
             },
             "typeName": {
-              "id": 1421,
+              "id": 1426,
               "keyType": {
-                "id": 1419,
+                "id": 1424,
                 "name": "bytes32",
                 "nodeType": "ElementaryTypeName",
-                "src": "518:7:9",
+                "src": "586:7:9",
                 "typeDescriptions": {
                   "typeIdentifier": "t_bytes32",
                   "typeString": "bytes32"
                 }
               },
               "nodeType": "Mapping",
-              "src": "510:27:9",
+              "src": "578:27:9",
               "typeDescriptions": {
                 "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$",
                 "typeString": "mapping(bytes32 => uint256)"
               },
               "valueType": {
-                "id": 1420,
+                "id": 1425,
                 "name": "uint256",
                 "nodeType": "ElementaryTypeName",
-                "src": "529:7:9",
+                "src": "597:7:9",
                 "typeDescriptions": {
                   "typeIdentifier": "t_uint256",
                   "typeString": "uint256"
@@ -25022,13 +25274,13 @@
           {
             "constant": false,
             "functionSelector": "0c4ecab4",
-            "id": 1428,
+            "id": 1433,
             "mutability": "mutable",
             "name": "confirmations",
-            "nameLocation": "613:13:9",
+            "nameLocation": "681:13:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2391,
-            "src": "561:65:9",
+            "scope": 2424,
+            "src": "629:65:9",
             "stateVariable": true,
             "storageLocation": "default",
             "typeDescriptions": {
@@ -25036,46 +25288,46 @@
               "typeString": "mapping(bytes32 => mapping(address => bool))"
             },
             "typeName": {
-              "id": 1427,
+              "id": 1432,
               "keyType": {
-                "id": 1423,
+                "id": 1428,
                 "name": "bytes32",
                 "nodeType": "ElementaryTypeName",
-                "src": "569:7:9",
+                "src": "637:7:9",
                 "typeDescriptions": {
                   "typeIdentifier": "t_bytes32",
                   "typeString": "bytes32"
                 }
               },
               "nodeType": "Mapping",
-              "src": "561:44:9",
+              "src": "629:44:9",
               "typeDescriptions": {
                 "typeIdentifier": "t_mapping$_t_bytes32_$_t_mapping$_t_address_$_t_bool_$_$",
                 "typeString": "mapping(bytes32 => mapping(address => bool))"
               },
               "valueType": {
-                "id": 1426,
+                "id": 1431,
                 "keyType": {
-                  "id": 1424,
+                  "id": 1429,
                   "name": "address",
                   "nodeType": "ElementaryTypeName",
-                  "src": "588:7:9",
+                  "src": "656:7:9",
                   "typeDescriptions": {
                     "typeIdentifier": "t_address",
                     "typeString": "address"
                   }
                 },
                 "nodeType": "Mapping",
-                "src": "580:24:9",
+                "src": "648:24:9",
                 "typeDescriptions": {
                   "typeIdentifier": "t_mapping$_t_address_$_t_bool_$",
                   "typeString": "mapping(address => bool)"
                 },
                 "valueType": {
-                  "id": 1425,
+                  "id": 1430,
                   "name": "bool",
                   "nodeType": "ElementaryTypeName",
-                  "src": "599:4:9",
+                  "src": "667:4:9",
                   "typeDescriptions": {
                     "typeIdentifier": "t_bool",
                     "typeString": "bool"
@@ -25088,13 +25340,13 @@
           {
             "constant": false,
             "functionSelector": "c63c4e9b",
-            "id": 1430,
+            "id": 1435,
             "mutability": "mutable",
             "name": "minDelay",
-            "nameLocation": "645:8:9",
+            "nameLocation": "713:8:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2391,
-            "src": "630:23:9",
+            "scope": 2424,
+            "src": "698:23:9",
             "stateVariable": true,
             "storageLocation": "default",
             "typeDescriptions": {
@@ -25102,10 +25354,10 @@
               "typeString": "uint256"
             },
             "typeName": {
-              "id": 1429,
+              "id": 1434,
               "name": "uint256",
               "nodeType": "ElementaryTypeName",
-              "src": "630:7:9",
+              "src": "698:7:9",
               "typeDescriptions": {
                 "typeIdentifier": "t_uint256",
                 "typeString": "uint256"
@@ -25116,13 +25368,13 @@
           {
             "constant": false,
             "functionSelector": "dc8452cd",
-            "id": 1432,
+            "id": 1437,
             "mutability": "mutable",
             "name": "required",
-            "nameLocation": "672:8:9",
+            "nameLocation": "740:8:9",
             "nodeType": "VariableDeclaration",
-            "scope": 2391,
-            "src": "657:23:9",
+            "scope": 2424,
+            "src": "725:23:9",
             "stateVariable": true,
             "storageLocation": "default",
             "typeDescriptions": {
@@ -25130,10 +25382,10 @@
               "typeString": "uint256"
             },
             "typeName": {
-              "id": 1431,
+              "id": 1436,
               "name": "uint256",
               "nodeType": "ElementaryTypeName",
-              "src": "657:7:9",
+              "src": "725:7:9",
               "typeDescriptions": {
                 "typeIdentifier": "t_uint256",
                 "typeString": "uint256"
@@ -25144,29 +25396,29 @@
           {
             "anonymous": false,
             "documentation": {
-              "id": 1433,
+              "id": 1438,
               "nodeType": "StructuredDocumentation",
-              "src": "685:79:9",
+              "src": "753:79:9",
               "text": " @dev Emitted when a call is scheduled as part of operation `id`."
             },
-            "id": 1449,
+            "id": 1454,
             "name": "CallScheduled",
-            "nameLocation": "773:13:9",
+            "nameLocation": "841:13:9",
             "nodeType": "EventDefinition",
             "parameters": {
-              "id": 1448,
+              "id": 1453,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1435,
+                  "id": 1440,
                   "indexed": true,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "808:2:9",
+                  "nameLocation": "876:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1449,
-                  "src": "792:18:9",
+                  "scope": 1454,
+                  "src": "860:18:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -25174,10 +25426,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1434,
+                    "id": 1439,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "792:7:9",
+                    "src": "860:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -25187,14 +25439,14 @@
                 },
                 {
                   "constant": false,
-                  "id": 1437,
+                  "id": 1442,
                   "indexed": true,
                   "mutability": "mutable",
                   "name": "index",
-                  "nameLocation": "832:5:9",
+                  "nameLocation": "900:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1449,
-                  "src": "816:21:9",
+                  "scope": 1454,
+                  "src": "884:21:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -25202,10 +25454,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 1436,
+                    "id": 1441,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "816:7:9",
+                    "src": "884:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -25215,14 +25467,14 @@
                 },
                 {
                   "constant": false,
-                  "id": 1439,
+                  "id": 1444,
                   "indexed": false,
                   "mutability": "mutable",
                   "name": "target",
-                  "nameLocation": "851:6:9",
+                  "nameLocation": "919:6:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1449,
-                  "src": "843:14:9",
+                  "scope": 1454,
+                  "src": "911:14:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -25230,10 +25482,10 @@
                     "typeString": "address"
                   },
                   "typeName": {
-                    "id": 1438,
+                    "id": 1443,
                     "name": "address",
                     "nodeType": "ElementaryTypeName",
-                    "src": "843:7:9",
+                    "src": "911:7:9",
                     "stateMutability": "nonpayable",
                     "typeDescriptions": {
                       "typeIdentifier": "t_address",
@@ -25244,14 +25496,14 @@
                 },
                 {
                   "constant": false,
-                  "id": 1441,
+                  "id": 1446,
                   "indexed": false,
                   "mutability": "mutable",
                   "name": "value",
-                  "nameLocation": "871:5:9",
+                  "nameLocation": "939:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1449,
-                  "src": "863:13:9",
+                  "scope": 1454,
+                  "src": "931:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -25259,10 +25511,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 1440,
+                    "id": 1445,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "863:7:9",
+                    "src": "931:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -25272,14 +25524,14 @@
                 },
                 {
                   "constant": false,
-                  "id": 1443,
+                  "id": 1448,
                   "indexed": false,
                   "mutability": "mutable",
                   "name": "data",
-                  "nameLocation": "888:4:9",
+                  "nameLocation": "956:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1449,
-                  "src": "882:10:9",
+                  "scope": 1454,
+                  "src": "950:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -25287,10 +25539,10 @@
                     "typeString": "bytes"
                   },
                   "typeName": {
-                    "id": 1442,
+                    "id": 1447,
                     "name": "bytes",
                     "nodeType": "ElementaryTypeName",
-                    "src": "882:5:9",
+                    "src": "950:5:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes_storage_ptr",
                       "typeString": "bytes"
@@ -25300,14 +25552,14 @@
                 },
                 {
                   "constant": false,
-                  "id": 1445,
+                  "id": 1450,
                   "indexed": false,
                   "mutability": "mutable",
                   "name": "predecessor",
-                  "nameLocation": "906:11:9",
+                  "nameLocation": "974:11:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1449,
-                  "src": "898:19:9",
+                  "scope": 1454,
+                  "src": "966:19:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -25315,10 +25567,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1444,
+                    "id": 1449,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "898:7:9",
+                    "src": "966:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -25326,212 +25578,50 @@
                   },
                   "visibility": "internal"
                 },
-                {
-                  "constant": false,
-                  "id": 1447,
-                  "indexed": false,
-                  "mutability": "mutable",
-                  "name": "delay",
-                  "nameLocation": "931:5:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1449,
-                  "src": "923:13:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 1446,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "923:7:9",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "visibility": "internal"
-                }
-              ],
-              "src": "786:154:9"
-            },
-            "src": "767:174:9"
-          },
-          {
-            "anonymous": false,
-            "documentation": {
-              "id": 1450,
-              "nodeType": "StructuredDocumentation",
-              "src": "945:79:9",
-              "text": " @dev Emitted when a call is performed as part of operation `id`."
-            },
-            "id": 1462,
-            "name": "CallExecuted",
-            "nameLocation": "1033:12:9",
-            "nodeType": "EventDefinition",
-            "parameters": {
-              "id": 1461,
-              "nodeType": "ParameterList",
-              "parameters": [
                 {
                   "constant": false,
                   "id": 1452,
-                  "indexed": true,
+                  "indexed": false,
                   "mutability": "mutable",
-                  "name": "id",
-                  "nameLocation": "1067:2:9",
+                  "name": "delay",
+                  "nameLocation": "999:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1462,
-                  "src": "1051:18:9",
+                  "scope": 1454,
+                  "src": "991:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
+                    "typeIdentifier": "t_uint256",
+                    "typeString": "uint256"
                   },
                   "typeName": {
                     "id": 1451,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1051:7:9",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 1454,
-                  "indexed": true,
-                  "mutability": "mutable",
-                  "name": "index",
-                  "nameLocation": "1091:5:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1462,
-                  "src": "1075:21:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 1453,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "1075:7:9",
+                    "src": "991:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
                   "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 1456,
-                  "indexed": false,
-                  "mutability": "mutable",
-                  "name": "target",
-                  "nameLocation": "1110:6:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1462,
-                  "src": "1102:14:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 1455,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1102:7:9",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 1458,
-                  "indexed": false,
-                  "mutability": "mutable",
-                  "name": "value",
-                  "nameLocation": "1130:5:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1462,
-                  "src": "1122:13:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_uint256",
-                    "typeString": "uint256"
-                  },
-                  "typeName": {
-                    "id": 1457,
-                    "name": "uint256",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1122:7:9",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_uint256",
-                      "typeString": "uint256"
-                    }
-                  },
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 1460,
-                  "indexed": false,
-                  "mutability": "mutable",
-                  "name": "data",
-                  "nameLocation": "1147:4:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1462,
-                  "src": "1141:10:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes_memory_ptr",
-                    "typeString": "bytes"
-                  },
-                  "typeName": {
-                    "id": 1459,
-                    "name": "bytes",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1141:5:9",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes_storage_ptr",
-                      "typeString": "bytes"
-                    }
-                  },
-                  "visibility": "internal"
                 }
               ],
-              "src": "1045:110:9"
+              "src": "854:154:9"
             },
-            "src": "1027:129:9"
+            "src": "835:174:9"
           },
           {
             "anonymous": false,
             "documentation": {
-              "id": 1463,
+              "id": 1455,
               "nodeType": "StructuredDocumentation",
-              "src": "1160:61:9",
-              "text": " @dev Emitted when operation `id` is cancelled."
+              "src": "1013:79:9",
+              "text": " @dev Emitted when a call is performed as part of operation `id`."
             },
             "id": 1467,
-            "name": "Cancelled",
-            "nameLocation": "1230:9:9",
+            "name": "CallExecuted",
+            "nameLocation": "1101:12:9",
             "nodeType": "EventDefinition",
             "parameters": {
               "id": 1466,
@@ -25539,207 +25629,369 @@
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1465,
+                  "id": 1457,
                   "indexed": true,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "1256:2:9",
+                  "nameLocation": "1135:2:9",
                   "nodeType": "VariableDeclaration",
                   "scope": 1467,
-                  "src": "1240:18:9",
+                  "src": "1119:18:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
                     "typeIdentifier": "t_bytes32",
                     "typeString": "bytes32"
                   },
+                  "typeName": {
+                    "id": 1456,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1119:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 1459,
+                  "indexed": true,
+                  "mutability": "mutable",
+                  "name": "index",
+                  "nameLocation": "1159:5:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1467,
+                  "src": "1143:21:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_uint256",
+                    "typeString": "uint256"
+                  },
+                  "typeName": {
+                    "id": 1458,
+                    "name": "uint256",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1143:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_uint256",
+                      "typeString": "uint256"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 1461,
+                  "indexed": false,
+                  "mutability": "mutable",
+                  "name": "target",
+                  "nameLocation": "1178:6:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1467,
+                  "src": "1170:14:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_address",
+                    "typeString": "address"
+                  },
+                  "typeName": {
+                    "id": 1460,
+                    "name": "address",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1170:7:9",
+                    "stateMutability": "nonpayable",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_address",
+                      "typeString": "address"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 1463,
+                  "indexed": false,
+                  "mutability": "mutable",
+                  "name": "value",
+                  "nameLocation": "1198:5:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1467,
+                  "src": "1190:13:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_uint256",
+                    "typeString": "uint256"
+                  },
+                  "typeName": {
+                    "id": 1462,
+                    "name": "uint256",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1190:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_uint256",
+                      "typeString": "uint256"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 1465,
+                  "indexed": false,
+                  "mutability": "mutable",
+                  "name": "data",
+                  "nameLocation": "1215:4:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1467,
+                  "src": "1209:10:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes_memory_ptr",
+                    "typeString": "bytes"
+                  },
                   "typeName": {
                     "id": 1464,
-                    "name": "bytes32",
+                    "name": "bytes",
                     "nodeType": "ElementaryTypeName",
-                    "src": "1240:7:9",
+                    "src": "1209:5:9",
                     "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
+                      "typeIdentifier": "t_bytes_storage_ptr",
+                      "typeString": "bytes"
                     }
                   },
                   "visibility": "internal"
                 }
               ],
-              "src": "1239:20:9"
+              "src": "1113:110:9"
             },
-            "src": "1224:36:9"
-          },
-          {
-            "anonymous": false,
-            "id": 1473,
-            "name": "Confirmation",
-            "nameLocation": "1270:12:9",
-            "nodeType": "EventDefinition",
-            "parameters": {
-              "id": 1472,
-              "nodeType": "ParameterList",
-              "parameters": [
-                {
-                  "constant": false,
-                  "id": 1469,
-                  "indexed": true,
-                  "mutability": "mutable",
-                  "name": "sender",
-                  "nameLocation": "1299:6:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1473,
-                  "src": "1283:22:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 1468,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1283:7:9",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 1471,
-                  "indexed": false,
-                  "mutability": "mutable",
-                  "name": "id",
-                  "nameLocation": "1315:2:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1473,
-                  "src": "1307:10:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1470,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1307:7:9",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1282:36:9"
-            },
-            "src": "1264:55:9"
-          },
-          {
-            "anonymous": false,
-            "id": 1479,
-            "name": "Revocation",
-            "nameLocation": "1329:10:9",
-            "nodeType": "EventDefinition",
-            "parameters": {
-              "id": 1478,
-              "nodeType": "ParameterList",
-              "parameters": [
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-                  "constant": false,
-                  "id": 1475,
-                  "indexed": true,
-                  "mutability": "mutable",
-                  "name": "sender",
-                  "nameLocation": "1356:6:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1479,
-                  "src": "1340:22:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_address",
-                    "typeString": "address"
-                  },
-                  "typeName": {
-                    "id": 1474,
-                    "name": "address",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1340:7:9",
-                    "stateMutability": "nonpayable",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_address",
-                      "typeString": "address"
-                    }
-                  },
-                  "visibility": "internal"
-                },
-                {
-                  "constant": false,
-                  "id": 1477,
-                  "indexed": false,
-                  "mutability": "mutable",
-                  "name": "id",
-                  "nameLocation": "1372:2:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1479,
-                  "src": "1364:10:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1476,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "1364:7:9",
-                    "typeDescriptions": {
-                      "typeIdentifier": "t_bytes32",
-                      "typeString": "bytes32"
-                    }
-                  },
-                  "visibility": "internal"
-                }
-              ],
-              "src": "1339:36:9"
-            },
-            "src": "1323:53:9"
+            "src": "1095:129:9"
           },
           {
             "anonymous": false,
             "documentation": {
-              "id": 1480,
+              "id": 1468,
               "nodeType": "StructuredDocumentation",
-              "src": "1380:85:9",
-              "text": " @dev Emitted when the minimum delay for future operations is modified."
+              "src": "1228:61:9",
+              "text": " @dev Emitted when operation `id` is cancelled."
             },
-            "id": 1486,
-            "name": "MinDelayChange",
-            "nameLocation": "1474:14:9",
+            "id": 1472,
+            "name": "Cancelled",
+            "nameLocation": "1298:9:9",
             "nodeType": "EventDefinition",
             "parameters": {
-              "id": 1485,
+              "id": 1471,
               "nodeType": "ParameterList",
               "parameters": [
+                {
+                  "constant": false,
+                  "id": 1470,
+                  "indexed": true,
+                  "mutability": "mutable",
+                  "name": "id",
+                  "nameLocation": "1324:2:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1472,
+                  "src": "1308:18:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1469,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1308:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
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+                  "visibility": "internal"
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+              ],
+              "src": "1307:20:9"
+            },
+            "src": "1292:36:9"
+          },
+          {
+            "anonymous": false,
+            "id": 1478,
+            "name": "Confirmation",
+            "nameLocation": "1338:12:9",
+            "nodeType": "EventDefinition",
+            "parameters": {
+              "id": 1477,
+              "nodeType": "ParameterList",
+              "parameters": [
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+                  "id": 1474,
+                  "indexed": true,
+                  "mutability": "mutable",
+                  "name": "sender",
+                  "nameLocation": "1367:6:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1478,
+                  "src": "1351:22:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_address",
+                    "typeString": "address"
+                  },
+                  "typeName": {
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+                    "name": "address",
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+                    "src": "1351:7:9",
+                    "stateMutability": "nonpayable",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_address",
+                      "typeString": "address"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
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+                  "indexed": false,
+                  "mutability": "mutable",
+                  "name": "id",
+                  "nameLocation": "1383:2:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1478,
+                  "src": "1375:10:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1475,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1375:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "visibility": "internal"
+                }
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+              "src": "1350:36:9"
+            },
+            "src": "1332:55:9"
+          },
+          {
+            "anonymous": false,
+            "id": 1484,
+            "name": "Revocation",
+            "nameLocation": "1397:10:9",
+            "nodeType": "EventDefinition",
+            "parameters": {
+              "id": 1483,
+              "nodeType": "ParameterList",
+              "parameters": [
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+                  "constant": false,
+                  "id": 1480,
+                  "indexed": true,
+                  "mutability": "mutable",
+                  "name": "sender",
+                  "nameLocation": "1424:6:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1484,
+                  "src": "1408:22:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_address",
+                    "typeString": "address"
+                  },
+                  "typeName": {
+                    "id": 1479,
+                    "name": "address",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "1408:7:9",
+                    "stateMutability": "nonpayable",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_address",
+                      "typeString": "address"
+                    }
+                  },
+                  "visibility": "internal"
+                },
                 {
                   "constant": false,
                   "id": 1482,
                   "indexed": false,
                   "mutability": "mutable",
-                  "name": "oldDuration",
-                  "nameLocation": "1497:11:9",
+                  "name": "id",
+                  "nameLocation": "1440:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1486,
-                  "src": "1489:19:9",
+                  "scope": 1484,
+                  "src": "1432:10:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
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@@ -25747,10 +25999,10 @@
                     "typeString": "uint256"
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@@ -25758,65 +26010,16 @@
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@@ -25827,7 +26030,56 @@
                     "id": 1488,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "1642:7:9",
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                       "typeString": "uint256"
@@ -25837,14 +26089,14 @@
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@@ -25852,10 +26104,10 @@
                     "typeString": "uint256"
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                       "typeString": "uint256"
@@ -25864,15 +26116,15 @@
                   "visibility": "internal"
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@@ -25882,32 +26134,32 @@
                           "typeIdentifier": "t_address",
                           "typeString": "address"
                         },
-                        "id": 1502,
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                             "referencedDeclaration": 4294967281,
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                             "typeDescriptions": {
                               "typeIdentifier": "t_magic_message",
                               "typeString": "msg"
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                           "lValueRequested": false,
                           "memberName": "sender",
                           "nodeType": "MemberAccess",
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                           "typeDescriptions": {
                             "typeIdentifier": "t_address",
                             "typeString": "address"
@@ -25918,14 +26170,14 @@
                         "rightExpression": {
                           "arguments": [
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                               "name": "this",
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                               "referencedDeclaration": 4294967268,
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+                              "src": "1821:4:9",
                               "typeDescriptions": {
-                                "typeIdentifier": "t_contract$_BEMultiSigWallet_$2391",
+                                "typeIdentifier": "t_contract$_BEMultiSigWallet_$2424",
                                 "typeString": "contract BEMultiSigWallet"
                               }
                             }
@@ -25933,30 +26185,30 @@
                           "expression": {
                             "argumentTypes": [
                               {
-                                "typeIdentifier": "t_contract$_BEMultiSigWallet_$2391",
+                                "typeIdentifier": "t_contract$_BEMultiSigWallet_$2424",
                                 "typeString": "contract BEMultiSigWallet"
                               }
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                             "typeDescriptions": {
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                               "typeString": "type(address)"
                             },
                             "typeName": {
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+                              "id": 1503,
                               "name": "address",
                               "nodeType": "ElementaryTypeName",
-                              "src": "1745:7:9",
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@@ -25964,14 +26216,14 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "1745:13:9",
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                           "typeDescriptions": {
                             "typeIdentifier": "t_address",
                             "typeString": "address"
                           }
                         },
-                        "src": "1731:27:9",
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                         "typeDescriptions": {
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@@ -25979,14 +26231,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a2063616c6c6572206d7573742062652077616c6c6574",
-                        "id": 1503,
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                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "1766:41:9",
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                         "typeDescriptions": {
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                           "typeString": "literal_string \"BEMultiSigWallet: caller must be wallet\""
@@ -26005,7 +26257,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: caller must be wallet\""
                         }
                       ],
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@@ -26013,13 +26265,13 @@
                         4294967278
                       ],
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                         "typeString": "function (bool,string memory) pure"
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@@ -26027,66 +26279,66 @@
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                     "names": [],
                     "nodeType": "FunctionCall",
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                       "typeString": "tuple()"
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                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1402,
-                        "src": "2024:19:9",
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                           "typeString": "bytes32"
                         }
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                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
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@@ -26104,18 +26356,18 @@
                           "typeString": "bytes32"
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@@ -26123,39 +26375,39 @@
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                     "nodeType": "FunctionCall",
-                    "src": "2010:55:9",
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                         "name": "PROPOSER_ROLE",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1407,
-                        "src": "2085:13:9",
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                         "typeDescriptions": {
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                           "typeString": "bytes32"
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                         "name": "TIMELOCK_ADMIN_ROLE",
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                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1402,
-                        "src": "2100:19:9",
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                         "typeDescriptions": {
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@@ -26173,18 +26425,18 @@
                           "typeString": "bytes32"
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                       "name": "_setRoleAdmin",
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                         "typeString": "function (bytes32,bytes32)"
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@@ -26192,39 +26444,39 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "2071:49:9",
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                       "typeString": "tuple()"
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                         "name": "EXECUTOR_ROLE",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1412,
-                        "src": "2140:13:9",
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                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
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                         "name": "TIMELOCK_ADMIN_ROLE",
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                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1402,
-                        "src": "2155:19:9",
+                        "src": "2256:19:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -26242,18 +26494,18 @@
                           "typeString": "bytes32"
                         }
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                       "name": "_setRoleAdmin",
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-                      "src": "2126:13:9",
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                         "typeString": "function (bytes32,bytes32)"
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@@ -26261,27 +26513,96 @@
                     "lValueRequested": false,
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-                    "src": "2126:49:9",
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                       "typeString": "tuple()"
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-                        "id": 1536,
+                        "id": 1544,
+                        "name": "CONFIRM_ROLE",
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+                        "referencedDeclaration": 1417,
+                        "src": "2296:12:9",
+                        "typeDescriptions": {
+                          "typeIdentifier": "t_bytes32",
+                          "typeString": "bytes32"
+                        }
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                         "name": "TIMELOCK_ADMIN_ROLE",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1402,
-                        "src": "2231:19:9",
+                        "src": "2310:19:9",
+                        "typeDescriptions": {
+                          "typeIdentifier": "t_bytes32",
+                          "typeString": "bytes32"
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+                          "typeIdentifier": "t_bytes32",
+                          "typeString": "bytes32"
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+                          "typeIdentifier": "t_bytes32",
+                          "typeString": "bytes32"
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+                        "name": "TIMELOCK_ADMIN_ROLE",
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                         "typeDescriptions": {
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                           "typeString": "bytes32"
@@ -26291,18 +26612,18 @@
                         "arguments": [],
                         "expression": {
                           "argumentTypes": [],
-                          "id": 1537,
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                           "name": "_msgSender",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
                           "referencedDeclaration": 543,
-                          "src": "2252:10:9",
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                           "typeDescriptions": {
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                             "typeString": "function () view returns (address)"
                           }
                         },
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@@ -26310,7 +26631,7 @@
                         "lValueRequested": false,
                         "names": [],
                         "nodeType": "FunctionCall",
-                        "src": "2252:12:9",
+                        "src": "2407:12:9",
                         "tryCall": false,
                         "typeDescriptions": {
                           "typeIdentifier": "t_address",
@@ -26329,18 +26650,18 @@
                           "typeString": "address"
                         }
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                       "name": "_setupRole",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 216,
-                      "src": "2220:10:9",
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                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_address_$returns$__$",
                         "typeString": "function (bytes32,address)"
                       }
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@@ -26348,27 +26669,27 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "2220:45:9",
+                    "src": "2375:45:9",
                     "tryCall": false,
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                       "typeString": "tuple()"
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+                  "src": "2375:45:9"
                 },
                 {
                   "expression": {
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                       {
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+                        "id": 1555,
                         "name": "TIMELOCK_ADMIN_ROLE",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1402,
-                        "src": "2282:19:9",
+                        "src": "2437:19:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -26377,14 +26698,14 @@
                       {
                         "arguments": [
                           {
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+                            "id": 1558,
                             "name": "this",
                             "nodeType": "Identifier",
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                             "referencedDeclaration": 4294967268,
-                            "src": "2311:4:9",
+                            "src": "2466:4:9",
                             "typeDescriptions": {
-                              "typeIdentifier": "t_contract$_BEMultiSigWallet_$2391",
+                              "typeIdentifier": "t_contract$_BEMultiSigWallet_$2424",
                               "typeString": "contract BEMultiSigWallet"
                             }
                           }
@@ -26392,30 +26713,30 @@
                         "expression": {
                           "argumentTypes": [
                             {
-                              "typeIdentifier": "t_contract$_BEMultiSigWallet_$2391",
+                              "typeIdentifier": "t_contract$_BEMultiSigWallet_$2424",
                               "typeString": "contract BEMultiSigWallet"
                             }
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                           "nodeType": "ElementaryTypeNameExpression",
-                          "src": "2303:7:9",
+                          "src": "2458:7:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_type$_t_address_$",
                             "typeString": "type(address)"
                           },
                           "typeName": {
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+                            "id": 1556,
                             "name": "address",
                             "nodeType": "ElementaryTypeName",
-                            "src": "2303:7:9",
+                            "src": "2458:7:9",
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@@ -26423,7 +26744,7 @@
                         "lValueRequested": false,
                         "names": [],
                         "nodeType": "FunctionCall",
-                        "src": "2303:13:9",
+                        "src": "2458:13:9",
                         "tryCall": false,
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                           "typeIdentifier": "t_address",
@@ -26442,18 +26763,18 @@
                           "typeString": "address"
                         }
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+                      "id": 1554,
                       "name": "_setupRole",
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                       "referencedDeclaration": 216,
-                      "src": "2271:10:9",
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                       "typeDescriptions": {
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                         "typeString": "function (bytes32,address)"
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@@ -26461,33 +26782,33 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "2271:46:9",
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                     "tryCall": false,
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                       "typeString": "tuple()"
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                     "statements": [
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                               "name": "PROPOSER_ROLE",
                               "nodeType": "Identifier",
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                               "referencedDeclaration": 1407,
-                              "src": "2416:13:9",
+                              "src": "2571:13:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
@@ -26495,25 +26816,25 @@
                             },
                             {
                               "baseExpression": {
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+                                "id": 1575,
                                 "name": "proposers",
                                 "nodeType": "Identifier",
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+                                "src": "2586:9:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
                                   "typeString": "address[] memory"
                                 }
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                                 "name": "i",
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+                                "referencedDeclaration": 1563,
+                                "src": "2596:1:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_uint256",
                                   "typeString": "uint256"
@@ -26524,7 +26845,7 @@
                               "isPure": false,
                               "lValueRequested": false,
                               "nodeType": "IndexAccess",
-                              "src": "2431:12:9",
+                              "src": "2586:12:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_address",
                                 "typeString": "address"
@@ -26542,18 +26863,18 @@
                                 "typeString": "address"
                               }
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+                            "id": 1573,
                             "name": "_setupRole",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
                             "referencedDeclaration": 216,
-                            "src": "2405:10:9",
+                            "src": "2560:10:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_address_$returns$__$",
                               "typeString": "function (bytes32,address)"
                             }
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@@ -26561,16 +26882,16 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "2405:39:9",
+                          "src": "2560:39:9",
                           "tryCall": false,
                           "typeDescriptions": {
                             "typeIdentifier": "t_tuple$__$",
                             "typeString": "tuple()"
                           }
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+                        "id": 1579,
                         "nodeType": "ExpressionStatement",
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+                        "src": "2560:39:9"
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@@ -26579,18 +26900,18 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
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                       "typeDescriptions": {
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                         "typeString": "uint256"
@@ -26600,51 +26921,51 @@
                     "operator": "<",
                     "rightExpression": {
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+                        "id": 1567,
                         "name": "proposers",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1514,
-                        "src": "2374:9:9",
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                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
                           "typeString": "address[] memory"
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                       "lValueRequested": false,
                       "memberName": "length",
                       "nodeType": "MemberAccess",
-                      "src": "2374:16:9",
+                      "src": "2529:16:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "2370:20:9",
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                     "typeDescriptions": {
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                       "typeString": "bool"
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+                  "id": 1581,
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+                      1563
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+                        "id": 1563,
                         "mutability": "mutable",
                         "name": "i",
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+                        "nameLocation": "2518:1:9",
                         "nodeType": "VariableDeclaration",
-                        "scope": 1568,
-                        "src": "2355:9:9",
+                        "scope": 1581,
+                        "src": "2510:9:9",
                         "stateVariable": false,
                         "storageLocation": "default",
                         "typeDescriptions": {
@@ -26652,10 +26973,10 @@
                           "typeString": "uint256"
                         },
                         "typeName": {
-                          "id": 1549,
+                          "id": 1562,
                           "name": "uint256",
                           "nodeType": "ElementaryTypeName",
-                          "src": "2355:7:9",
+                          "src": "2510:7:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -26664,17 +26985,17 @@
                         "visibility": "internal"
                       }
                     ],
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+                    "id": 1565,
                     "initialValue": {
                       "hexValue": "30",
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                       "isPure": true,
                       "kind": "number",
                       "lValueRequested": false,
                       "nodeType": "Literal",
-                      "src": "2367:1:9",
+                      "src": "2522:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
@@ -26682,11 +27003,11 @@
                       "value": "0"
                     },
                     "nodeType": "VariableDeclarationStatement",
-                    "src": "2355:13:9"
+                    "src": "2510:13:9"
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@@ -26694,14 +27015,14 @@
                       "nodeType": "UnaryOperation",
                       "operator": "++",
                       "prefix": true,
-                      "src": "2392:3:9",
+                      "src": "2547:3:9",
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                         "overloadedDeclarations": [],
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-                        "src": "2394:1:9",
+                        "referencedDeclaration": 1563,
+                        "src": "2549:1:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -26712,29 +27033,29 @@
                         "typeString": "uint256"
                       }
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                     "statements": [
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                         "expression": {
                           "arguments": [
                             {
-                              "id": 1581,
-                              "name": "EXECUTOR_ROLE",
+                              "id": 1594,
+                              "name": "CONFIRM_ROLE",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1412,
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+                              "referencedDeclaration": 1417,
+                              "src": "2706:12:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
@@ -26742,25 +27063,25 @@
                             },
                             {
                               "baseExpression": {
-                                "id": 1582,
-                                "name": "executors",
+                                "id": 1595,
+                                "name": "confirmers",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 1517,
-                                "src": "2564:9:9",
+                                "referencedDeclaration": 1522,
+                                "src": "2720:10:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
                                   "typeString": "address[] memory"
                                 }
                               },
-                              "id": 1584,
+                              "id": 1597,
                               "indexExpression": {
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                                 "name": "i",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 1570,
-                                "src": "2574:1:9",
+                                "referencedDeclaration": 1583,
+                                "src": "2731:1:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_uint256",
                                   "typeString": "uint256"
@@ -26771,7 +27092,7 @@
                               "isPure": false,
                               "lValueRequested": false,
                               "nodeType": "IndexAccess",
-                              "src": "2564:12:9",
+                              "src": "2720:13:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_address",
                                 "typeString": "address"
@@ -26789,18 +27110,18 @@
                                 "typeString": "address"
                               }
                             ],
-                            "id": 1580,
+                            "id": 1593,
                             "name": "_setupRole",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
                             "referencedDeclaration": 216,
-                            "src": "2538:10:9",
+                            "src": "2695:10:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_address_$returns$__$",
                               "typeString": "function (bytes32,address)"
                             }
                           },
-                          "id": 1585,
+                          "id": 1598,
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@@ -26808,16 +27129,16 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "2538:39:9",
+                          "src": "2695:39:9",
                           "tryCall": false,
                           "typeDescriptions": {
                             "typeIdentifier": "t_tuple$__$",
                             "typeString": "tuple()"
                           }
                         },
-                        "id": 1586,
+                        "id": 1599,
                         "nodeType": "ExpressionStatement",
-                        "src": "2538:39:9"
+                        "src": "2695:39:9"
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                     ]
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@@ -26826,18 +27147,18 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
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                       "typeDescriptions": {
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                         "typeString": "uint256"
@@ -26847,51 +27168,51 @@
                     "operator": "<",
                     "rightExpression": {
                       "expression": {
-                        "id": 1574,
-                        "name": "executors",
+                        "id": 1587,
+                        "name": "confirmers",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
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-                        "src": "2507:9:9",
+                        "referencedDeclaration": 1522,
+                        "src": "2663:10:9",
                         "typeDescriptions": {
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                           "typeString": "address[] memory"
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                       "isPure": false,
                       "lValueRequested": false,
                       "memberName": "length",
                       "nodeType": "MemberAccess",
-                      "src": "2507:16:9",
+                      "src": "2663:17:9",
                       "typeDescriptions": {
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                         "typeString": "uint256"
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-                    "src": "2503:20:9",
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                       "typeString": "bool"
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+                        "id": 1583,
                         "mutability": "mutable",
                         "name": "i",
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+                        "nameLocation": "2652:1:9",
                         "nodeType": "VariableDeclaration",
-                        "scope": 1588,
-                        "src": "2488:9:9",
+                        "scope": 1601,
+                        "src": "2644:9:9",
                         "stateVariable": false,
                         "storageLocation": "default",
                         "typeDescriptions": {
@@ -26899,10 +27220,10 @@
                           "typeString": "uint256"
                         },
                         "typeName": {
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+                          "id": 1582,
                           "name": "uint256",
                           "nodeType": "ElementaryTypeName",
-                          "src": "2488:7:9",
+                          "src": "2644:7:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -26911,17 +27232,17 @@
                         "visibility": "internal"
                       }
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+                    "id": 1585,
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                       "isPure": true,
                       "kind": "number",
                       "lValueRequested": false,
                       "nodeType": "Literal",
-                      "src": "2500:1:9",
+                      "src": "2656:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
@@ -26929,11 +27250,11 @@
                       "value": "0"
                     },
                     "nodeType": "VariableDeclarationStatement",
-                    "src": "2488:13:9"
+                    "src": "2644:13:9"
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@@ -26941,14 +27262,14 @@
                       "nodeType": "UnaryOperation",
                       "operator": "++",
                       "prefix": true,
-                      "src": "2525:3:9",
+                      "src": "2682:3:9",
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                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1570,
-                        "src": "2527:1:9",
+                        "referencedDeclaration": 1583,
+                        "src": "2684:1:9",
                         "typeDescriptions": {
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                           "typeString": "uint256"
@@ -26959,27 +27280,274 @@
                         "typeString": "uint256"
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+                  "src": "2639:102:9"
+                },
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+                    "statements": [
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+                        "expression": {
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+                            {
+                              "id": 1614,
+                              "name": "EXECUTOR_ROLE",
+                              "nodeType": "Identifier",
+                              "overloadedDeclarations": [],
+                              "referencedDeclaration": 1412,
+                              "src": "2839:13:9",
+                              "typeDescriptions": {
+                                "typeIdentifier": "t_bytes32",
+                                "typeString": "bytes32"
+                              }
+                            },
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+                                "typeString": "address"
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+                                "typeString": "bytes32"
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+                              "typeString": "function (bytes32,address)"
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+                          "typeString": "uint256"
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+                            "typeIdentifier": "t_uint256",
+                            "typeString": "uint256"
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+                        "typeDescriptions": {
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+                          "typeString": "uint256"
+                        }
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+                        "typeIdentifier": "t_uint256",
+                        "typeString": "uint256"
+                      }
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                 },
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                     "isPure": false,
                     "lValueRequested": false,
                     "leftHandSide": {
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+                      "id": 1622,
                       "name": "minDelay",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1430,
-                      "src": "2590:8:9",
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+                      "src": "2880:8:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -26988,40 +27556,40 @@
                     "nodeType": "Assignment",
                     "operator": "=",
                     "rightHandSide": {
-                      "id": 1590,
+                      "id": 1623,
                       "name": "_minDelay",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1511,
-                      "src": "2601:9:9",
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                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "2590:20:9",
+                    "src": "2880:20:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
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                 },
                 {
                   "eventCall": {
                     "arguments": [
                       {
                         "hexValue": "30",
-                        "id": 1594,
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                         "isPure": true,
                         "kind": "number",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "2636:1:9",
+                        "src": "2926:1:9",
                         "typeDescriptions": {
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                           "typeString": "int_const 0"
@@ -27029,12 +27597,12 @@
                         "value": "0"
                       },
                       {
-                        "id": 1595,
+                        "id": 1628,
                         "name": "minDelay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1430,
-                        "src": "2639:8:9",
+                        "referencedDeclaration": 1435,
+                        "src": "2929:8:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -27052,18 +27620,18 @@
                           "typeString": "uint256"
                         }
                       ],
-                      "id": 1593,
+                      "id": 1626,
                       "name": "MinDelayChange",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
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-                      "src": "2621:14:9",
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                         "typeIdentifier": "t_function_event_nonpayable$_t_uint256_$_t_uint256_$returns$__$",
                         "typeString": "function (uint256,uint256)"
                       }
                     },
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@@ -27071,26 +27639,26 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "2621:27:9",
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                       "typeString": "tuple()"
                     }
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                 }
               ]
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             "documentation": {
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+              "id": 1514,
               "nodeType": "StructuredDocumentation",
-              "src": "1829:69:9",
+              "src": "1897:69:9",
               "text": " @dev Initializes the contract with a given `minDelay`."
             },
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+            "id": 1632,
             "implemented": true,
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@@ -27098,18 +27666,18 @@
             "nameLocation": "-1:-1:-1",
             "nodeType": "FunctionDefinition",
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+                  "id": 1516,
                   "mutability": "mutable",
                   "name": "_minDelay",
-                  "nameLocation": "1926:9:9",
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                   "nodeType": "VariableDeclaration",
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-                  "src": "1918:17:9",
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@@ -27117,10 +27685,10 @@
                     "typeString": "uint256"
                   },
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+                    "id": 1515,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "1918:7:9",
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@@ -27130,13 +27698,13 @@
                 },
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                   "mutability": "mutable",
                   "name": "proposers",
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@@ -27145,19 +27713,19 @@
                   },
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                       "name": "address",
                       "nodeType": "ElementaryTypeName",
-                      "src": "1941:7:9",
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                       "stateMutability": "nonpayable",
                       "typeDescriptions": {
                         "typeIdentifier": "t_address",
                         "typeString": "address"
                       }
                     },
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-                    "src": "1941:9:9",
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@@ -27167,13 +27735,13 @@
                 },
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                   "mutability": "mutable",
-                  "name": "executors",
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+                  "name": "confirmers",
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@@ -27182,19 +27750,56 @@
                   },
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                       "name": "address",
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                         "typeIdentifier": "t_address",
                         "typeString": "address"
                       }
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                     "nodeType": "ArrayTypeName",
-                    "src": "1973:9:9",
+                    "src": "2041:9:9",
+                    "typeDescriptions": {
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+                      "typeString": "address[]"
+                    }
+                  },
+                  "visibility": "internal"
+                },
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+                  "id": 1525,
+                  "mutability": "mutable",
+                  "name": "executors",
+                  "nameLocation": "2091:9:9",
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+                  "src": "2074:26:9",
+                  "stateVariable": false,
+                  "storageLocation": "memory",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_array$_t_address_$dyn_memory_ptr",
+                    "typeString": "address[]"
+                  },
+                  "typeName": {
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+                      "name": "address",
+                      "nodeType": "ElementaryTypeName",
+                      "src": "2074:7:9",
+                      "stateMutability": "nonpayable",
+                      "typeDescriptions": {
+                        "typeIdentifier": "t_address",
+                        "typeString": "address"
+                      }
+                    },
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+                    "nodeType": "ArrayTypeName",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
                       "typeString": "address[]"
@@ -27203,29 +27808,29 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "1912:91:9"
+              "src": "1980:124:9"
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               "nodeType": "ParameterList",
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-              "src": "2004:0:9"
+              "src": "2105:0:9"
             },
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-            "src": "1901:752:9",
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+            "src": "1969:974:9",
             "stateMutability": "nonpayable",
             "virtual": false,
             "visibility": "public"
           },
           {
             "body": {
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+              "id": 1654,
               "nodeType": "Block",
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               "statements": [
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@@ -27233,16 +27838,16 @@
                     "nodeType": "UnaryOperation",
                     "operator": "!",
                     "prefix": true,
-                    "src": "2973:26:9",
+                    "src": "3263:26:9",
                     "subExpression": {
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                           "name": "role",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
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                           "typeDescriptions": {
                             "typeIdentifier": "t_bytes32",
                             "typeString": "bytes32"
@@ -27252,14 +27857,14 @@
                           "arguments": [
                             {
                               "hexValue": "30",
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                               "nodeType": "Literal",
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                                 "typeString": "int_const 0"
@@ -27274,26 +27879,26 @@
                                 "typeString": "int_const 0"
                               }
                             ],
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                             "nodeType": "ElementaryTypeNameExpression",
-                            "src": "2988:7:9",
+                            "src": "3278:7:9",
                             "typeDescriptions": {
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                               "typeString": "type(address)"
                             },
                             "typeName": {
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+                              "id": 1639,
                               "name": "address",
                               "nodeType": "ElementaryTypeName",
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@@ -27301,7 +27906,7 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "2988:10:9",
+                          "src": "3278:10:9",
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@@ -27320,18 +27925,18 @@
                             "typeString": "address"
                           }
                         ],
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                         "name": "hasRole",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 81,
-                        "src": "2974:7:9",
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                         "typeDescriptions": {
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                           "typeString": "function (bytes32,address) view returns (bool)"
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@@ -27339,7 +27944,7 @@
                       "lValueRequested": false,
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@@ -27351,24 +27956,24 @@
                       "typeString": "bool"
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@@ -27378,18 +27983,18 @@
                               "arguments": [],
                               "expression": {
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-                                "src": "3026:10:9",
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                                 "typeDescriptions": {
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                                   "typeString": "function () view returns (address)"
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@@ -27397,7 +28002,7 @@
                               "lValueRequested": false,
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                               "nodeType": "FunctionCall",
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@@ -27416,18 +28021,18 @@
                                 "typeString": "address"
                               }
                             ],
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                             "name": "_checkRole",
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                             "referencedDeclaration": 124,
-                            "src": "3009:10:9",
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                               "typeString": "function (bytes32,address) view"
                             }
                           },
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                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
@@ -27435,50 +28040,50 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "3009:30:9",
+                          "src": "3299:30:9",
                           "tryCall": false,
                           "typeDescriptions": {
                             "typeIdentifier": "t_tuple$__$",
                             "typeString": "tuple()"
                           }
                         },
-                        "id": 1617,
+                        "id": 1650,
                         "nodeType": "ExpressionStatement",
-                        "src": "3009:30:9"
+                        "src": "3299:30:9"
                       }
                     ]
                   }
                 },
                 {
-                  "id": 1620,
+                  "id": 1653,
                   "nodeType": "PlaceholderStatement",
-                  "src": "3051:1:9"
+                  "src": "3341:1:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1600,
+              "id": 1633,
               "nodeType": "StructuredDocumentation",
-              "src": "2657:261:9",
+              "src": "2947:261:9",
               "text": " @dev Modifier to make a function callable only by a certain role. In\n addition to checking the sender's role, `address(0)` 's role is also\n considered. Granting a role to `address(0)` is equivalent to enabling\n this role for everyone."
             },
-            "id": 1622,
+            "id": 1655,
             "name": "onlyRoleOrOpenRole",
-            "nameLocation": "2930:18:9",
+            "nameLocation": "3220:18:9",
             "nodeType": "ModifierDefinition",
             "parameters": {
-              "id": 1603,
+              "id": 1636,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1602,
+                  "id": 1635,
                   "mutability": "mutable",
                   "name": "role",
-                  "nameLocation": "2957:4:9",
+                  "nameLocation": "3247:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1622,
-                  "src": "2949:12:9",
+                  "scope": 1655,
+                  "src": "3239:12:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27486,10 +28091,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1601,
+                    "id": 1634,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "2949:7:9",
+                    "src": "3239:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -27498,26 +28103,26 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "2948:14:9"
+              "src": "3238:14:9"
             },
-            "src": "2921:136:9",
+            "src": "3211:136:9",
             "virtual": false,
             "visibility": "internal"
           },
           {
             "body": {
-              "id": 1626,
+              "id": 1659,
               "nodeType": "Block",
-              "src": "3178:2:9",
+              "src": "3468:2:9",
               "statements": []
             },
             "documentation": {
-              "id": 1623,
+              "id": 1656,
               "nodeType": "StructuredDocumentation",
-              "src": "3061:87:9",
+              "src": "3351:87:9",
               "text": " @dev Contract might receive/hold ETH as part of the maintenance process."
             },
-            "id": 1627,
+            "id": 1660,
             "implemented": true,
             "kind": "receive",
             "modifiers": [],
@@ -27525,28 +28130,28 @@
             "nameLocation": "-1:-1:-1",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1624,
+              "id": 1657,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "3158:2:9"
+              "src": "3448:2:9"
             },
             "returnParameters": {
-              "id": 1625,
+              "id": 1658,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "3178:0:9"
+              "src": "3468:0:9"
             },
-            "scope": 2391,
-            "src": "3151:29:9",
+            "scope": 2424,
+            "src": "3441:29:9",
             "stateMutability": "payable",
             "virtual": false,
             "visibility": "external"
           },
           {
             "body": {
-              "id": 1641,
+              "id": 1674,
               "nodeType": "Block",
-              "src": "3402:38:9",
+              "src": "3692:38:9",
               "statements": [
                 {
                   "expression": {
@@ -27554,7 +28159,7 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
-                    "id": 1639,
+                    "id": 1672,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -27562,12 +28167,12 @@
                     "leftExpression": {
                       "arguments": [
                         {
-                          "id": 1636,
+                          "id": 1669,
                           "name": "id",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1630,
-                          "src": "3428:2:9",
+                          "referencedDeclaration": 1663,
+                          "src": "3718:2:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_bytes32",
                             "typeString": "bytes32"
@@ -27581,18 +28186,18 @@
                             "typeString": "bytes32"
                           }
                         ],
-                        "id": 1635,
+                        "id": 1668,
                         "name": "getTimestamp",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1758,
-                        "src": "3415:12:9",
+                        "referencedDeclaration": 1791,
+                        "src": "3705:12:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
                           "typeString": "function (bytes32) view returns (uint256)"
                         }
                       },
-                      "id": 1637,
+                      "id": 1670,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -27600,7 +28205,7 @@
                       "lValueRequested": false,
                       "names": [],
                       "nodeType": "FunctionCall",
-                      "src": "3415:16:9",
+                      "src": "3705:16:9",
                       "tryCall": false,
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
@@ -27611,60 +28216,60 @@
                     "operator": ">",
                     "rightExpression": {
                       "hexValue": "30",
-                      "id": 1638,
+                      "id": 1671,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": true,
                       "kind": "number",
                       "lValueRequested": false,
                       "nodeType": "Literal",
-                      "src": "3434:1:9",
+                      "src": "3724:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
                       },
                       "value": "0"
                     },
-                    "src": "3415:20:9",
+                    "src": "3705:20:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "functionReturnParameters": 1634,
-                  "id": 1640,
+                  "functionReturnParameters": 1667,
+                  "id": 1673,
                   "nodeType": "Return",
-                  "src": "3408:27:9"
+                  "src": "3698:27:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1628,
+              "id": 1661,
               "nodeType": "StructuredDocumentation",
-              "src": "3184:139:9",
+              "src": "3474:139:9",
               "text": " @dev Returns whether an id correspond to a registered operation. This\n includes both Pending, Ready and Done operations."
             },
             "functionSelector": "31d50750",
-            "id": 1642,
+            "id": 1675,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "isOperation",
-            "nameLocation": "3335:11:9",
+            "nameLocation": "3625:11:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1631,
+              "id": 1664,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1630,
+                  "id": 1663,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "3355:2:9",
+                  "nameLocation": "3645:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1642,
-                  "src": "3347:10:9",
+                  "scope": 1675,
+                  "src": "3637:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27672,10 +28277,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1629,
+                    "id": 1662,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "3347:7:9",
+                    "src": "3637:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -27684,21 +28289,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "3346:12:9"
+              "src": "3636:12:9"
             },
             "returnParameters": {
-              "id": 1634,
+              "id": 1667,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1633,
+                  "id": 1666,
                   "mutability": "mutable",
                   "name": "pending",
-                  "nameLocation": "3393:7:9",
+                  "nameLocation": "3683:7:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1642,
-                  "src": "3388:12:9",
+                  "scope": 1675,
+                  "src": "3678:12:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27706,10 +28311,10 @@
                     "typeString": "bool"
                   },
                   "typeName": {
-                    "id": 1632,
+                    "id": 1665,
                     "name": "bool",
                     "nodeType": "ElementaryTypeName",
-                    "src": "3388:4:9",
+                    "src": "3678:4:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
@@ -27718,19 +28323,19 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "3387:14:9"
+              "src": "3677:14:9"
             },
-            "scope": 2391,
-            "src": "3326:114:9",
+            "scope": 2424,
+            "src": "3616:114:9",
             "stateMutability": "view",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1656,
+              "id": 1689,
               "nodeType": "Block",
-              "src": "3605:52:9",
+              "src": "3895:52:9",
               "statements": [
                 {
                   "expression": {
@@ -27738,7 +28343,7 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
-                    "id": 1654,
+                    "id": 1687,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -27746,12 +28351,12 @@
                     "leftExpression": {
                       "arguments": [
                         {
-                          "id": 1651,
+                          "id": 1684,
                           "name": "id",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1645,
-                          "src": "3631:2:9",
+                          "referencedDeclaration": 1678,
+                          "src": "3921:2:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_bytes32",
                             "typeString": "bytes32"
@@ -27765,18 +28370,18 @@
                             "typeString": "bytes32"
                           }
                         ],
-                        "id": 1650,
+                        "id": 1683,
                         "name": "getTimestamp",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1758,
-                        "src": "3618:12:9",
+                        "referencedDeclaration": 1791,
+                        "src": "3908:12:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
                           "typeString": "function (bytes32) view returns (uint256)"
                         }
                       },
-                      "id": 1652,
+                      "id": 1685,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -27784,7 +28389,7 @@
                       "lValueRequested": false,
                       "names": [],
                       "nodeType": "FunctionCall",
-                      "src": "3618:16:9",
+                      "src": "3908:16:9",
                       "tryCall": false,
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
@@ -27794,57 +28399,57 @@
                     "nodeType": "BinaryOperation",
                     "operator": ">",
                     "rightExpression": {
-                      "id": 1653,
+                      "id": 1686,
                       "name": "_DONE_TIMESTAMP",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1418,
-                      "src": "3637:15:9",
+                      "referencedDeclaration": 1423,
+                      "src": "3927:15:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "3618:34:9",
+                    "src": "3908:34:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "functionReturnParameters": 1649,
-                  "id": 1655,
+                  "functionReturnParameters": 1682,
+                  "id": 1688,
                   "nodeType": "Return",
-                  "src": "3611:41:9"
+                  "src": "3901:41:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1643,
+              "id": 1676,
               "nodeType": "StructuredDocumentation",
-              "src": "3444:67:9",
+              "src": "3734:67:9",
               "text": " @dev Returns whether an operation is pending or not."
             },
             "functionSelector": "584b153e",
-            "id": 1657,
+            "id": 1690,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "isOperationPending",
-            "nameLocation": "3523:18:9",
+            "nameLocation": "3813:18:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1646,
+              "id": 1679,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1645,
+                  "id": 1678,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "3555:2:9",
+                  "nameLocation": "3845:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1657,
-                  "src": "3547:10:9",
+                  "scope": 1690,
+                  "src": "3837:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27852,10 +28457,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1644,
+                    "id": 1677,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "3547:7:9",
+                    "src": "3837:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -27864,21 +28469,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "3541:20:9"
+              "src": "3831:20:9"
             },
             "returnParameters": {
-              "id": 1649,
+              "id": 1682,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1648,
+                  "id": 1681,
                   "mutability": "mutable",
                   "name": "pending",
-                  "nameLocation": "3596:7:9",
+                  "nameLocation": "3886:7:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1657,
-                  "src": "3591:12:9",
+                  "scope": 1690,
+                  "src": "3881:12:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -27886,10 +28491,10 @@
                     "typeString": "bool"
                   },
                   "typeName": {
-                    "id": 1647,
+                    "id": 1680,
                     "name": "bool",
                     "nodeType": "ElementaryTypeName",
-                    "src": "3591:4:9",
+                    "src": "3881:4:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
@@ -27898,34 +28503,34 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "3590:14:9"
+              "src": "3880:14:9"
             },
-            "scope": 2391,
-            "src": "3514:143:9",
+            "scope": 2424,
+            "src": "3804:143:9",
             "stateMutability": "view",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1705,
+              "id": 1738,
               "nodeType": "Block",
-              "src": "3727:263:9",
+              "src": "4017:263:9",
               "statements": [
                 {
                   "assignments": [
-                    1665
+                    1698
                   ],
                   "declarations": [
                     {
                       "constant": false,
-                      "id": 1665,
+                      "id": 1698,
                       "mutability": "mutable",
                       "name": "count",
-                      "nameLocation": "3741:5:9",
+                      "nameLocation": "4031:5:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 1705,
-                      "src": "3733:13:9",
+                      "scope": 1738,
+                      "src": "4023:13:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -27933,10 +28538,10 @@
                         "typeString": "uint256"
                       },
                       "typeName": {
-                        "id": 1664,
+                        "id": 1697,
                         "name": "uint256",
                         "nodeType": "ElementaryTypeName",
-                        "src": "3733:7:9",
+                        "src": "4023:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -27945,17 +28550,17 @@
                       "visibility": "internal"
                     }
                   ],
-                  "id": 1667,
+                  "id": 1700,
                   "initialValue": {
                     "hexValue": "30",
-                    "id": 1666,
+                    "id": 1699,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": true,
                     "kind": "number",
                     "lValueRequested": false,
                     "nodeType": "Literal",
-                    "src": "3749:1:9",
+                    "src": "4039:1:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_rational_0_by_1",
                       "typeString": "int_const 0"
@@ -27963,22 +28568,22 @@
                     "value": "0"
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "3733:17:9"
+                  "src": "4023:17:9"
                 },
                 {
                   "assignments": [
-                    1669
+                    1702
                   ],
                   "declarations": [
                     {
                       "constant": false,
-                      "id": 1669,
+                      "id": 1702,
                       "mutability": "mutable",
                       "name": "executorCount",
-                      "nameLocation": "3764:13:9",
+                      "nameLocation": "4054:13:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 1705,
-                      "src": "3756:21:9",
+                      "scope": 1738,
+                      "src": "4046:21:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -27986,10 +28591,10 @@
                         "typeString": "uint256"
                       },
                       "typeName": {
-                        "id": 1668,
+                        "id": 1701,
                         "name": "uint256",
                         "nodeType": "ElementaryTypeName",
-                        "src": "3756:7:9",
+                        "src": "4046:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -27998,16 +28603,16 @@
                       "visibility": "internal"
                     }
                   ],
-                  "id": 1673,
+                  "id": 1706,
                   "initialValue": {
                     "arguments": [
                       {
-                        "id": 1671,
+                        "id": 1704,
                         "name": "EXECUTOR_ROLE",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
                         "referencedDeclaration": 1412,
-                        "src": "3799:13:9",
+                        "src": "4089:13:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -28021,18 +28626,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 1670,
+                      "id": 1703,
                       "name": "getRoleMemberCount",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 384,
-                      "src": "3780:18:9",
+                      "src": "4070:18:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
                         "typeString": "function (bytes32) view returns (uint256)"
                       }
                     },
-                    "id": 1672,
+                    "id": 1705,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -28040,7 +28645,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "3780:33:9",
+                    "src": "4070:33:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
@@ -28048,37 +28653,37 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "3756:57:9"
+                  "src": "4046:57:9"
                 },
                 {
                   "body": {
-                    "id": 1703,
+                    "id": 1736,
                     "nodeType": "Block",
-                    "src": "3863:123:9",
+                    "src": "4153:123:9",
                     "statements": [
                       {
                         "condition": {
                           "baseExpression": {
                             "baseExpression": {
-                              "id": 1684,
+                              "id": 1717,
                               "name": "confirmations",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1428,
-                              "src": "3875:13:9",
+                              "referencedDeclaration": 1433,
+                              "src": "4165:13:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_mapping$_t_bytes32_$_t_mapping$_t_address_$_t_bool_$_$",
                                 "typeString": "mapping(bytes32 => mapping(address => bool))"
                               }
                             },
-                            "id": 1686,
+                            "id": 1719,
                             "indexExpression": {
-                              "id": 1685,
+                              "id": 1718,
                               "name": "id",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1659,
-                              "src": "3889:2:9",
+                              "referencedDeclaration": 1692,
+                              "src": "4179:2:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
@@ -28089,34 +28694,34 @@
                             "isPure": false,
                             "lValueRequested": false,
                             "nodeType": "IndexAccess",
-                            "src": "3875:17:9",
+                            "src": "4165:17:9",
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                               "typeString": "mapping(address => bool)"
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                                 "referencedDeclaration": 1412,
-                                "src": "3907:13:9",
+                                "src": "4197:13:9",
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                                   "typeString": "bytes32"
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                                   "typeString": "uint256"
@@ -28134,18 +28739,18 @@
                                   "typeString": "uint256"
                                 }
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                                 "typeString": "function (bytes32,uint256) view returns (address)"
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@@ -28153,7 +28758,7 @@
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                             "nodeType": "FunctionCall",
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+                            "src": "4183:31:9",
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@@ -28165,29 +28770,29 @@
                           "isPure": false,
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                           "nodeType": "IndexAccess",
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                             "typeString": "bool"
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                                 "typeString": "uint256"
@@ -28197,29 +28802,29 @@
                             "operator": "+=",
                             "rightHandSide": {
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                               "nodeType": "Literal",
-                              "src": "3936:1:9",
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                               "typeDescriptions": {
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                                 "typeString": "int_const 1"
                               },
                               "value": "1"
                             },
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+                            "src": "4217:10:9",
                             "typeDescriptions": {
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                               "typeString": "uint256"
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                           "nodeType": "ExpressionStatement",
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                         }
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@@ -28228,18 +28833,18 @@
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           },
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                             "name": "count",
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                             "typeDescriptions": {
                               "typeIdentifier": "t_uint256",
                               "typeString": "uint256"
@@ -28248,47 +28853,47 @@
                           "nodeType": "BinaryOperation",
                           "operator": "==",
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                               "typeString": "uint256"
                             }
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                           "typeDescriptions": {
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                             "typeString": "bool"
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                             "lValueRequested": false,
                             "nodeType": "Literal",
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                             "typeDescriptions": {
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                               "typeString": "bool"
                             },
                             "value": "true"
                           },
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@@ -28298,18 +28903,18 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
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                         "typeString": "uint256"
@@ -28318,38 +28923,38 @@
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                       "name": "executorCount",
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                         "typeString": "uint256"
                       }
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                         "mutability": "mutable",
                         "name": "i",
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@@ -28357,10 +28962,10 @@
                           "typeString": "uint256"
                         },
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+                          "id": 1707,
                           "name": "uint256",
                           "nodeType": "ElementaryTypeName",
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                             "typeString": "uint256"
@@ -28369,17 +28974,17 @@
                         "visibility": "internal"
                       }
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                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
@@ -28387,11 +28992,11 @@
                       "value": "0"
                     },
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@@ -28399,14 +29004,14 @@
                       "nodeType": "UnaryOperation",
                       "operator": "++",
                       "prefix": false,
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                         "overloadedDeclarations": [],
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                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -28417,36 +29022,36 @@
                         "typeString": "uint256"
                       }
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             "name": "isConfirmed",
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@@ -28454,10 +29059,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
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+                    "id": 1691,
                     "name": "bytes32",
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                       "typeString": "bytes32"
@@ -28466,21 +29071,21 @@
                   "visibility": "internal"
                 }
               ],
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@@ -28488,10 +29093,10 @@
                     "typeString": "bool"
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                       "typeString": "bool"
@@ -28500,34 +29105,34 @@
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             "stateMutability": "view",
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@@ -28535,10 +29140,10 @@
                         "typeString": "uint256"
                       },
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+                        "id": 1747,
                         "name": "uint256",
                         "nodeType": "ElementaryTypeName",
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                         "typeDescriptions": {
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                           "typeString": "uint256"
@@ -28547,16 +29152,16 @@
                       "visibility": "internal"
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                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -28570,18 +29175,18 @@
                           "typeString": "bytes32"
                         }
                       ],
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                       "name": "getTimestamp",
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                         "typeString": "function (bytes32) view returns (uint256)"
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@@ -28589,7 +29194,7 @@
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@@ -28597,7 +29202,7 @@
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@@ -28605,7 +29210,7 @@
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
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@@ -28615,18 +29220,18 @@
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       },
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                         "name": "timestamp",
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                           "typeString": "uint256"
@@ -28635,18 +29240,18 @@
                       "nodeType": "BinaryOperation",
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                         "name": "_DONE_TIMESTAMP",
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                         "typeDescriptions": {
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                           "typeString": "uint256"
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@@ -28659,18 +29264,18 @@
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
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                         "name": "timestamp",
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                           "typeString": "uint256"
@@ -28680,76 +29285,76 @@
                       "operator": "<=",
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                         "memberName": "timestamp",
                         "nodeType": "MemberAccess",
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                         "typeDescriptions": {
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@@ -28757,10 +29362,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1708,
+                    "id": 1741,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4093:7:9",
+                    "src": "4383:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -28769,21 +29374,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4087:20:9"
+              "src": "4377:20:9"
             },
             "returnParameters": {
-              "id": 1713,
+              "id": 1746,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1712,
+                  "id": 1745,
                   "mutability": "mutable",
                   "name": "ready",
-                  "nameLocation": "4142:5:9",
+                  "nameLocation": "4432:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1730,
-                  "src": "4137:10:9",
+                  "scope": 1763,
+                  "src": "4427:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -28791,10 +29396,10 @@
                     "typeString": "bool"
                   },
                   "typeName": {
-                    "id": 1711,
+                    "id": 1744,
                     "name": "bool",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4137:4:9",
+                    "src": "4427:4:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
@@ -28803,19 +29408,19 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4136:12:9"
+              "src": "4426:12:9"
             },
-            "scope": 2391,
-            "src": "4062:206:9",
+            "scope": 2424,
+            "src": "4352:206:9",
             "stateMutability": "view",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1744,
+              "id": 1777,
               "nodeType": "Block",
-              "src": "4416:53:9",
+              "src": "4706:53:9",
               "statements": [
                 {
                   "expression": {
@@ -28823,7 +29428,7 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
-                    "id": 1742,
+                    "id": 1775,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -28831,12 +29436,12 @@
                     "leftExpression": {
                       "arguments": [
                         {
-                          "id": 1739,
+                          "id": 1772,
                           "name": "id",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1733,
-                          "src": "4442:2:9",
+                          "referencedDeclaration": 1766,
+                          "src": "4732:2:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_bytes32",
                             "typeString": "bytes32"
@@ -28850,18 +29455,18 @@
                             "typeString": "bytes32"
                           }
                         ],
-                        "id": 1738,
+                        "id": 1771,
                         "name": "getTimestamp",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1758,
-                        "src": "4429:12:9",
+                        "referencedDeclaration": 1791,
+                        "src": "4719:12:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_uint256_$",
                           "typeString": "function (bytes32) view returns (uint256)"
                         }
                       },
-                      "id": 1740,
+                      "id": 1773,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -28869,7 +29474,7 @@
                       "lValueRequested": false,
                       "names": [],
                       "nodeType": "FunctionCall",
-                      "src": "4429:16:9",
+                      "src": "4719:16:9",
                       "tryCall": false,
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
@@ -28879,57 +29484,57 @@
                     "nodeType": "BinaryOperation",
                     "operator": "==",
                     "rightExpression": {
-                      "id": 1741,
+                      "id": 1774,
                       "name": "_DONE_TIMESTAMP",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1418,
-                      "src": "4449:15:9",
+                      "referencedDeclaration": 1423,
+                      "src": "4739:15:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "4429:35:9",
+                    "src": "4719:35:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "functionReturnParameters": 1737,
-                  "id": 1743,
+                  "functionReturnParameters": 1770,
+                  "id": 1776,
                   "nodeType": "Return",
-                  "src": "4422:42:9"
+                  "src": "4712:42:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1731,
+              "id": 1764,
               "nodeType": "StructuredDocumentation",
-              "src": "4272:64:9",
+              "src": "4562:64:9",
               "text": " @dev Returns whether an operation is done or not."
             },
             "functionSelector": "2ab0f529",
-            "id": 1745,
+            "id": 1778,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "isOperationDone",
-            "nameLocation": "4348:15:9",
+            "nameLocation": "4638:15:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1734,
+              "id": 1767,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1733,
+                  "id": 1766,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "4372:2:9",
+                  "nameLocation": "4662:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1745,
-                  "src": "4364:10:9",
+                  "scope": 1778,
+                  "src": "4654:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -28937,10 +29542,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1732,
+                    "id": 1765,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4364:7:9",
+                    "src": "4654:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -28949,21 +29554,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4363:12:9"
+              "src": "4653:12:9"
             },
             "returnParameters": {
-              "id": 1737,
+              "id": 1770,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1736,
+                  "id": 1769,
                   "mutability": "mutable",
                   "name": "done",
-                  "nameLocation": "4410:4:9",
+                  "nameLocation": "4700:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1745,
-                  "src": "4405:9:9",
+                  "scope": 1778,
+                  "src": "4695:9:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -28971,10 +29576,10 @@
                     "typeString": "bool"
                   },
                   "typeName": {
-                    "id": 1735,
+                    "id": 1768,
                     "name": "bool",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4405:4:9",
+                    "src": "4695:4:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
@@ -28983,42 +29588,42 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4404:11:9"
+              "src": "4694:11:9"
             },
-            "scope": 2391,
-            "src": "4339:130:9",
+            "scope": 2424,
+            "src": "4629:130:9",
             "stateMutability": "view",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1757,
+              "id": 1790,
               "nodeType": "Block",
-              "src": "4696:33:9",
+              "src": "4986:33:9",
               "statements": [
                 {
                   "expression": {
                     "baseExpression": {
-                      "id": 1753,
+                      "id": 1786,
                       "name": "_timestamps",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1422,
-                      "src": "4709:11:9",
+                      "referencedDeclaration": 1427,
+                      "src": "4999:11:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$",
                         "typeString": "mapping(bytes32 => uint256)"
                       }
                     },
-                    "id": 1755,
+                    "id": 1788,
                     "indexExpression": {
-                      "id": 1754,
+                      "id": 1787,
                       "name": "id",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1748,
-                      "src": "4721:2:9",
+                      "referencedDeclaration": 1781,
+                      "src": "5011:2:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_bytes32",
                         "typeString": "bytes32"
@@ -29029,46 +29634,46 @@
                     "isPure": false,
                     "lValueRequested": false,
                     "nodeType": "IndexAccess",
-                    "src": "4709:15:9",
+                    "src": "4999:15:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
-                  "functionReturnParameters": 1752,
-                  "id": 1756,
+                  "functionReturnParameters": 1785,
+                  "id": 1789,
                   "nodeType": "Return",
-                  "src": "4702:22:9"
+                  "src": "4992:22:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1746,
+              "id": 1779,
               "nodeType": "StructuredDocumentation",
-              "src": "4473:130:9",
+              "src": "4763:130:9",
               "text": " @dev Returns the timestamp at with an operation becomes ready (0 for\n unset operations, 1 for done operations)."
             },
             "functionSelector": "d45c4435",
-            "id": 1758,
+            "id": 1791,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "getTimestamp",
-            "nameLocation": "4615:12:9",
+            "nameLocation": "4905:12:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1749,
+              "id": 1782,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1748,
+                  "id": 1781,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "4641:2:9",
+                  "nameLocation": "4931:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1758,
-                  "src": "4633:10:9",
+                  "scope": 1791,
+                  "src": "4923:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -29076,10 +29681,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1747,
+                    "id": 1780,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4633:7:9",
+                    "src": "4923:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -29088,21 +29693,21 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4627:20:9"
+              "src": "4917:20:9"
             },
             "returnParameters": {
-              "id": 1752,
+              "id": 1785,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1751,
+                  "id": 1784,
                   "mutability": "mutable",
                   "name": "timestamp",
-                  "nameLocation": "4685:9:9",
+                  "nameLocation": "4975:9:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1758,
-                  "src": "4677:17:9",
+                  "scope": 1791,
+                  "src": "4967:17:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -29110,10 +29715,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 1750,
+                    "id": 1783,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4677:7:9",
+                    "src": "4967:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -29122,19 +29727,19 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "4676:19:9"
+              "src": "4966:19:9"
             },
-            "scope": 2391,
-            "src": "4606:123:9",
+            "scope": 2424,
+            "src": "4896:123:9",
             "stateMutability": "view",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1785,
+              "id": 1818,
               "nodeType": "Block",
-              "src": "5009:79:9",
+              "src": "5299:79:9",
               "statements": [
                 {
                   "expression": {
@@ -29142,60 +29747,60 @@
                       {
                         "arguments": [
                           {
-                            "id": 1777,
+                            "id": 1810,
                             "name": "target",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1761,
-                            "src": "5043:6:9",
+                            "referencedDeclaration": 1794,
+                            "src": "5333:6:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_address",
                               "typeString": "address"
                             }
                           },
                           {
-                            "id": 1778,
+                            "id": 1811,
                             "name": "value",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1763,
-                            "src": "5051:5:9",
+                            "referencedDeclaration": 1796,
+                            "src": "5341:5:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_uint256",
                               "typeString": "uint256"
                             }
                           },
                           {
-                            "id": 1779,
+                            "id": 1812,
                             "name": "data",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1765,
-                            "src": "5058:4:9",
+                            "referencedDeclaration": 1798,
+                            "src": "5348:4:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes_calldata_ptr",
                               "typeString": "bytes calldata"
                             }
                           },
                           {
-                            "id": 1780,
+                            "id": 1813,
                             "name": "predecessor",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1767,
-                            "src": "5064:11:9",
+                            "referencedDeclaration": 1800,
+                            "src": "5354:11:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
                             }
                           },
                           {
-                            "id": 1781,
+                            "id": 1814,
                             "name": "salt",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1769,
-                            "src": "5077:4:9",
+                            "referencedDeclaration": 1802,
+                            "src": "5367:4:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
@@ -29226,31 +29831,31 @@
                             }
                           ],
                           "expression": {
-                            "id": 1775,
+                            "id": 1808,
                             "name": "abi",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
                             "referencedDeclaration": 4294967295,
-                            "src": "5032:3:9",
+                            "src": "5322:3:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_magic_abi",
                               "typeString": "abi"
                             }
                           },
-                          "id": 1776,
+                          "id": 1809,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": true,
                           "lValueRequested": false,
                           "memberName": "encode",
                           "nodeType": "MemberAccess",
-                          "src": "5032:10:9",
+                          "src": "5322:10:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_function_abiencode_pure$__$returns$_t_bytes_memory_ptr_$",
                             "typeString": "function () pure returns (bytes memory)"
                           }
                         },
-                        "id": 1782,
+                        "id": 1815,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
@@ -29258,7 +29863,7 @@
                         "lValueRequested": false,
                         "names": [],
                         "nodeType": "FunctionCall",
-                        "src": "5032:50:9",
+                        "src": "5322:50:9",
                         "tryCall": false,
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes_memory_ptr",
@@ -29273,18 +29878,18 @@
                           "typeString": "bytes memory"
                         }
                       ],
-                      "id": 1774,
+                      "id": 1807,
                       "name": "keccak256",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
                       "referencedDeclaration": 4294967288,
-                      "src": "5022:9:9",
+                      "src": "5312:9:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$",
                         "typeString": "function (bytes memory) pure returns (bytes32)"
                       }
                     },
-                    "id": 1783,
+                    "id": 1816,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -29292,47 +29897,47 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "5022:61:9",
+                    "src": "5312:61:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   },
-                  "functionReturnParameters": 1773,
-                  "id": 1784,
+                  "functionReturnParameters": 1806,
+                  "id": 1817,
                   "nodeType": "Return",
-                  "src": "5015:68:9"
+                  "src": "5305:68:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1759,
+              "id": 1792,
               "nodeType": "StructuredDocumentation",
-              "src": "4733:96:9",
+              "src": "5023:96:9",
               "text": " @dev Returns the identifier of an operation containing a single\n transaction."
             },
             "functionSelector": "8065657f",
-            "id": 1786,
+            "id": 1819,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "hashOperation",
-            "nameLocation": "4841:13:9",
+            "nameLocation": "5131:13:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1770,
+              "id": 1803,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1761,
+                  "id": 1794,
                   "mutability": "mutable",
                   "name": "target",
-                  "nameLocation": "4868:6:9",
+                  "nameLocation": "5158:6:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1786,
-                  "src": "4860:14:9",
+                  "scope": 1819,
+                  "src": "5150:14:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -29340,10 +29945,10 @@
                     "typeString": "address"
                   },
                   "typeName": {
-                    "id": 1760,
+                    "id": 1793,
                     "name": "address",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4860:7:9",
+                    "src": "5150:7:9",
                     "stateMutability": "nonpayable",
                     "typeDescriptions": {
                       "typeIdentifier": "t_address",
@@ -29354,13 +29959,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1763,
+                  "id": 1796,
                   "mutability": "mutable",
                   "name": "value",
-                  "nameLocation": "4888:5:9",
+                  "nameLocation": "5178:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1786,
-                  "src": "4880:13:9",
+                  "scope": 1819,
+                  "src": "5170:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -29368,10 +29973,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 1762,
+                    "id": 1795,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4880:7:9",
+                    "src": "5170:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -29381,13 +29986,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1765,
+                  "id": 1798,
                   "mutability": "mutable",
                   "name": "data",
-                  "nameLocation": "4914:4:9",
+                  "nameLocation": "5204:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1786,
-                  "src": "4899:19:9",
+                  "scope": 1819,
+                  "src": "5189:19:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -29395,10 +30000,10 @@
                     "typeString": "bytes"
                   },
                   "typeName": {
-                    "id": 1764,
+                    "id": 1797,
                     "name": "bytes",
                     "nodeType": "ElementaryTypeName",
-                    "src": "4899:5:9",
+                    "src": "5189:5:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes_storage_ptr",
                       "typeString": "bytes"
@@ -29406,442 +30011,15 @@
                   },
                   "visibility": "internal"
                 },
-                {
-                  "constant": false,
-                  "id": 1767,
-                  "mutability": "mutable",
-                  "name": "predecessor",
-                  "nameLocation": "4932:11:9",
-                  "nodeType": "VariableDeclaration",
-                  "scope": 1786,
-                  "src": "4924:19:9",
-                  "stateVariable": false,
-                  "storageLocation": "default",
-                  "typeDescriptions": {
-                    "typeIdentifier": "t_bytes32",
-                    "typeString": "bytes32"
-                  },
-                  "typeName": {
-                    "id": 1766,
-                    "name": "bytes32",
-                    "nodeType": "ElementaryTypeName",
-                    "src": "4924:7:9",
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@@ -29852,30 +30030,23 @@
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@@ -29883,10 +30054,10 @@
                     "typeString": "bytes32"
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                       "typeString": "bytes32"
@@ -29895,34 +30066,468 @@
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+                      "typeDescriptions": {
+                        "typeIdentifier": "t_address",
+                        "typeString": "address"
+                      }
+                    },
+                    "id": 1822,
+                    "nodeType": "ArrayTypeName",
+                    "src": "5517:9:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
+                      "typeString": "address[]"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 1826,
+                  "mutability": "mutable",
+                  "name": "values",
+                  "nameLocation": "5568:6:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1850,
+                  "src": "5549:25:9",
+                  "stateVariable": false,
+                  "storageLocation": "calldata",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
+                    "typeString": "uint256[]"
+                  },
+                  "typeName": {
+                    "baseType": {
+                      "id": 1824,
+                      "name": "uint256",
+                      "nodeType": "ElementaryTypeName",
+                      "src": "5549:7:9",
+                      "typeDescriptions": {
+                        "typeIdentifier": "t_uint256",
+                        "typeString": "uint256"
+                      }
+                    },
+                    "id": 1825,
+                    "nodeType": "ArrayTypeName",
+                    "src": "5549:9:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_array$_t_uint256_$dyn_storage_ptr",
+                      "typeString": "uint256[]"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 1829,
+                  "mutability": "mutable",
+                  "name": "datas",
+                  "nameLocation": "5597:5:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1850,
+                  "src": "5580:22:9",
+                  "stateVariable": false,
+                  "storageLocation": "calldata",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
+                    "typeString": "bytes[]"
+                  },
+                  "typeName": {
+                    "baseType": {
+                      "id": 1827,
+                      "name": "bytes",
+                      "nodeType": "ElementaryTypeName",
+                      "src": "5580:5:9",
+                      "typeDescriptions": {
+                        "typeIdentifier": "t_bytes_storage_ptr",
+                        "typeString": "bytes"
+                      }
+                    },
+                    "id": 1828,
+                    "nodeType": "ArrayTypeName",
+                    "src": "5580:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_array$_t_bytes_storage_$dyn_storage_ptr",
+                      "typeString": "bytes[]"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 1831,
+                  "mutability": "mutable",
+                  "name": "predecessor",
+                  "nameLocation": "5616:11:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1850,
+                  "src": "5608:19:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1830,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "5608:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "visibility": "internal"
+                },
+                {
+                  "constant": false,
+                  "id": 1833,
+                  "mutability": "mutable",
+                  "name": "salt",
+                  "nameLocation": "5641:4:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1850,
+                  "src": "5633:12:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1832,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "5633:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "visibility": "internal"
+                }
+              ],
+              "src": "5511:138:9"
+            },
+            "returnParameters": {
+              "id": 1837,
+              "nodeType": "ParameterList",
+              "parameters": [
+                {
+                  "constant": false,
+                  "id": 1836,
+                  "mutability": "mutable",
+                  "name": "hash",
+                  "nameLocation": "5687:4:9",
+                  "nodeType": "VariableDeclaration",
+                  "scope": 1850,
+                  "src": "5679:12:9",
+                  "stateVariable": false,
+                  "storageLocation": "default",
+                  "typeDescriptions": {
+                    "typeIdentifier": "t_bytes32",
+                    "typeString": "bytes32"
+                  },
+                  "typeName": {
+                    "id": 1835,
+                    "name": "bytes32",
+                    "nodeType": "ElementaryTypeName",
+                    "src": "5679:7:9",
+                    "typeDescriptions": {
+                      "typeIdentifier": "t_bytes32",
+                      "typeString": "bytes32"
+                    }
+                  },
+                  "visibility": "internal"
+                }
+              ],
+              "src": "5678:14:9"
+            },
+            "scope": 2424,
+            "src": "5484:291:9",
+            "stateMutability": "pure",
+            "virtual": true,
+            "visibility": "public"
+          },
+          {
+            "body": {
+              "id": 1894,
+              "nodeType": "Block",
+              "src": "6162:175:9",
               "statements": [
                 {
                   "assignments": [
-                    1837
+                    1870
                   ],
                   "declarations": [
                     {
                       "constant": false,
-                      "id": 1837,
+                      "id": 1870,
                       "mutability": "mutable",
                       "name": "id",
-                      "nameLocation": "5886:2:9",
+                      "nameLocation": "6176:2:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 1861,
-                      "src": "5878:10:9",
+                      "scope": 1894,
+                      "src": "6168:10:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -29930,10 +30535,10 @@
                         "typeString": "bytes32"
                       },
                       "typeName": {
-                        "id": 1836,
+                        "id": 1869,
                         "name": "bytes32",
                         "nodeType": "ElementaryTypeName",
-                        "src": "5878:7:9",
+                        "src": "6168:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -29942,64 +30547,64 @@
                       "visibility": "internal"
                     }
                   ],
-                  "id": 1845,
+                  "id": 1878,
                   "initialValue": {
                     "arguments": [
                       {
-                        "id": 1839,
+                        "id": 1872,
                         "name": "target",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1820,
-                        "src": "5905:6:9",
+                        "referencedDeclaration": 1853,
+                        "src": "6195:6:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_address",
                           "typeString": "address"
                         }
                       },
                       {
-                        "id": 1840,
+                        "id": 1873,
                         "name": "value",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1822,
-                        "src": "5913:5:9",
+                        "referencedDeclaration": 1855,
+                        "src": "6203:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
                       {
-                        "id": 1841,
+                        "id": 1874,
                         "name": "data",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1824,
-                        "src": "5920:4:9",
+                        "referencedDeclaration": 1857,
+                        "src": "6210:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes_calldata_ptr",
                           "typeString": "bytes calldata"
                         }
                       },
                       {
-                        "id": 1842,
+                        "id": 1875,
                         "name": "predecessor",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1826,
-                        "src": "5926:11:9",
+                        "referencedDeclaration": 1859,
+                        "src": "6216:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 1843,
+                        "id": 1876,
                         "name": "salt",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1828,
-                        "src": "5939:4:9",
+                        "referencedDeclaration": 1861,
+                        "src": "6229:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -30029,18 +30634,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 1838,
+                      "id": 1871,
                       "name": "hashOperation",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1786,
-                      "src": "5891:13:9",
+                      "referencedDeclaration": 1819,
+                      "src": "6181:13:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_pure$_t_address_$_t_uint256_$_t_bytes_calldata_ptr_$_t_bytes32_$_t_bytes32_$returns$_t_bytes32_$",
                         "typeString": "function (address,uint256,bytes calldata,bytes32,bytes32) pure returns (bytes32)"
                       }
                     },
-                    "id": 1844,
+                    "id": 1877,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -30048,7 +30653,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "5891:53:9",
+                    "src": "6181:53:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
@@ -30056,30 +30661,30 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "5878:66:9"
+                  "src": "6168:66:9"
                 },
                 {
                   "expression": {
                     "arguments": [
                       {
-                        "id": 1847,
+                        "id": 1880,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1837,
-                        "src": "5960:2:9",
+                        "referencedDeclaration": 1870,
+                        "src": "6250:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 1848,
+                        "id": 1881,
                         "name": "delay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1830,
-                        "src": "5964:5:9",
+                        "referencedDeclaration": 1863,
+                        "src": "6254:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -30097,18 +30702,18 @@
                           "typeString": "uint256"
                         }
                       ],
-                      "id": 1846,
+                      "id": 1879,
                       "name": "_schedule",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1980,
-                      "src": "5950:9:9",
+                      "referencedDeclaration": 2013,
+                      "src": "6240:9:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_uint256_$returns$__$",
                         "typeString": "function (bytes32,uint256)"
                       }
                     },
-                    "id": 1849,
+                    "id": 1882,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -30116,27 +30721,27 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "5950:20:9",
+                    "src": "6240:20:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1850,
+                  "id": 1883,
                   "nodeType": "ExpressionStatement",
-                  "src": "5950:20:9"
+                  "src": "6240:20:9"
                 },
                 {
                   "eventCall": {
                     "arguments": [
                       {
-                        "id": 1852,
+                        "id": 1885,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1837,
-                        "src": "5995:2:9",
+                        "referencedDeclaration": 1870,
+                        "src": "6285:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -30144,14 +30749,14 @@
                       },
                       {
                         "hexValue": "30",
-                        "id": 1853,
+                        "id": 1886,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "number",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "5999:1:9",
+                        "src": "6289:1:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_rational_0_by_1",
                           "typeString": "int_const 0"
@@ -30159,60 +30764,60 @@
                         "value": "0"
                       },
                       {
-                        "id": 1854,
+                        "id": 1887,
                         "name": "target",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1820,
-                        "src": "6002:6:9",
+                        "referencedDeclaration": 1853,
+                        "src": "6292:6:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_address",
                           "typeString": "address"
                         }
                       },
                       {
-                        "id": 1855,
+                        "id": 1888,
                         "name": "value",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1822,
-                        "src": "6010:5:9",
+                        "referencedDeclaration": 1855,
+                        "src": "6300:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
                       {
-                        "id": 1856,
+                        "id": 1889,
                         "name": "data",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1824,
-                        "src": "6017:4:9",
+                        "referencedDeclaration": 1857,
+                        "src": "6307:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes_calldata_ptr",
                           "typeString": "bytes calldata"
                         }
                       },
                       {
-                        "id": 1857,
+                        "id": 1890,
                         "name": "predecessor",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1826,
-                        "src": "6023:11:9",
+                        "referencedDeclaration": 1859,
+                        "src": "6313:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 1858,
+                        "id": 1891,
                         "name": "delay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1830,
-                        "src": "6036:5:9",
+                        "referencedDeclaration": 1863,
+                        "src": "6326:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -30250,18 +30855,18 @@
                           "typeString": "uint256"
                         }
                       ],
-                      "id": 1851,
+                      "id": 1884,
                       "name": "CallScheduled",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1449,
-                      "src": "5981:13:9",
+                      "referencedDeclaration": 1454,
+                      "src": "6271:13:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$_t_uint256_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$_t_bytes32_$_t_uint256_$returns$__$",
                         "typeString": "function (bytes32,uint256,address,uint256,bytes memory,bytes32,uint256)"
                       }
                     },
-                    "id": 1859,
+                    "id": 1892,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -30269,74 +30874,74 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "5981:61:9",
+                    "src": "6271:61:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1860,
+                  "id": 1893,
                   "nodeType": "EmitStatement",
-                  "src": "5976:66:9"
+                  "src": "6266:66:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1818,
+              "id": 1851,
               "nodeType": "StructuredDocumentation",
-              "src": "5489:193:9",
+              "src": "5779:193:9",
               "text": " @dev Schedule an operation containing a single transaction.\n Emits a {CallScheduled} event.\n Requirements:\n - the caller must have the 'proposer' role."
             },
             "functionSelector": "01d5062a",
-            "id": 1862,
+            "id": 1895,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
                 "arguments": [
                   {
-                    "id": 1833,
+                    "id": 1866,
                     "name": "PROPOSER_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
                     "referencedDeclaration": 1407,
-                    "src": "5857:13:9",
+                    "src": "6147:13:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   }
                 ],
-                "id": 1834,
+                "id": 1867,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 1832,
+                  "id": 1865,
                   "name": "onlyRole",
                   "nodeType": "IdentifierPath",
                   "referencedDeclaration": 40,
-                  "src": "5848:8:9"
+                  "src": "6138:8:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "5848:23:9"
+                "src": "6138:23:9"
               }
             ],
             "name": "schedule",
-            "nameLocation": "5694:8:9",
+            "nameLocation": "5984:8:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1831,
+              "id": 1864,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1820,
+                  "id": 1853,
                   "mutability": "mutable",
                   "name": "target",
-                  "nameLocation": "5716:6:9",
+                  "nameLocation": "6006:6:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1862,
-                  "src": "5708:14:9",
+                  "scope": 1895,
+                  "src": "5998:14:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -30344,10 +30949,10 @@
                     "typeString": "address"
                   },
                   "typeName": {
-                    "id": 1819,
+                    "id": 1852,
                     "name": "address",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5708:7:9",
+                    "src": "5998:7:9",
                     "stateMutability": "nonpayable",
                     "typeDescriptions": {
                       "typeIdentifier": "t_address",
@@ -30358,13 +30963,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1822,
+                  "id": 1855,
                   "mutability": "mutable",
                   "name": "value",
-                  "nameLocation": "5736:5:9",
+                  "nameLocation": "6026:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1862,
-                  "src": "5728:13:9",
+                  "scope": 1895,
+                  "src": "6018:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -30372,10 +30977,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 1821,
+                    "id": 1854,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5728:7:9",
+                    "src": "6018:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -30385,13 +30990,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1824,
+                  "id": 1857,
                   "mutability": "mutable",
                   "name": "data",
-                  "nameLocation": "5762:4:9",
+                  "nameLocation": "6052:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1862,
-                  "src": "5747:19:9",
+                  "scope": 1895,
+                  "src": "6037:19:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -30399,10 +31004,10 @@
                     "typeString": "bytes"
                   },
                   "typeName": {
-                    "id": 1823,
+                    "id": 1856,
                     "name": "bytes",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5747:5:9",
+                    "src": "6037:5:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes_storage_ptr",
                       "typeString": "bytes"
@@ -30412,13 +31017,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1826,
+                  "id": 1859,
                   "mutability": "mutable",
                   "name": "predecessor",
-                  "nameLocation": "5780:11:9",
+                  "nameLocation": "6070:11:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1862,
-                  "src": "5772:19:9",
+                  "scope": 1895,
+                  "src": "6062:19:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -30426,10 +31031,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1825,
+                    "id": 1858,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5772:7:9",
+                    "src": "6062:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -30439,13 +31044,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1828,
+                  "id": 1861,
                   "mutability": "mutable",
                   "name": "salt",
-                  "nameLocation": "5805:4:9",
+                  "nameLocation": "6095:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1862,
-                  "src": "5797:12:9",
+                  "scope": 1895,
+                  "src": "6087:12:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -30453,10 +31058,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1827,
+                    "id": 1860,
                     "name": "bytes32",
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+                    "src": "6087:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -30466,13 +31071,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1830,
+                  "id": 1863,
                   "mutability": "mutable",
                   "name": "delay",
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+                  "nameLocation": "6113:5:9",
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-                  "src": "5815:13:9",
+                  "scope": 1895,
+                  "src": "6105:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -30480,10 +31085,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 1829,
+                    "id": 1862,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "5815:7:9",
+                    "src": "6105:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -30492,25 +31097,25 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "5702:130:9"
+              "src": "5992:130:9"
             },
             "returnParameters": {
-              "id": 1835,
+              "id": 1868,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "5872:0:9"
+              "src": "6162:0:9"
             },
-            "scope": 2391,
-            "src": "5685:362:9",
+            "scope": 2424,
+            "src": "5975:362:9",
             "stateMutability": "nonpayable",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1946,
+              "id": 1979,
               "nodeType": "Block",
-              "src": "6500:520:9",
+              "src": "6790:520:9",
               "statements": [
                 {
                   "expression": {
@@ -30520,32 +31125,32 @@
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         },
-                        "id": 1889,
+                        "id": 1922,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
                         "lValueRequested": false,
                         "leftExpression": {
                           "expression": {
-                            "id": 1885,
+                            "id": 1918,
                             "name": "targets",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1866,
-                            "src": "6521:7:9",
+                            "referencedDeclaration": 1899,
+                            "src": "6811:7:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                               "typeString": "address[] calldata"
                             }
                           },
-                          "id": 1886,
+                          "id": 1919,
                           "isConstant": false,
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                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "6521:14:9",
+                          "src": "6811:14:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -30555,31 +31160,31 @@
                         "operator": "==",
                         "rightExpression": {
                           "expression": {
-                            "id": 1887,
+                            "id": 1920,
                             "name": "values",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1869,
-                            "src": "6539:6:9",
+                            "referencedDeclaration": 1902,
+                            "src": "6829:6:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
                               "typeString": "uint256[] calldata"
                             }
                           },
-                          "id": 1888,
+                          "id": 1921,
                           "isConstant": false,
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                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "6539:13:9",
+                          "src": "6829:13:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           }
                         },
-                        "src": "6521:31:9",
+                        "src": "6811:31:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -30587,14 +31192,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206c656e677468206d69736d61746368",
-                        "id": 1890,
+                        "id": 1923,
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                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "6560:35:9",
+                        "src": "6850:35:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_a34a486f9100b008712958931fe0a50ea69be145b7a3d1e8680fe7decf64e499",
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
@@ -30613,7 +31218,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
                         }
                       ],
-                      "id": 1884,
+                      "id": 1917,
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@@ -30621,13 +31226,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "6506:7:9",
+                      "src": "6796:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
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+                    "id": 1924,
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@@ -30635,16 +31240,16 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "6506:95:9",
+                    "src": "6796:95:9",
                     "tryCall": false,
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                       "typeString": "tuple()"
                     }
                   },
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@@ -30654,32 +31259,32 @@
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         },
-                        "id": 1898,
+                        "id": 1931,
                         "isConstant": false,
                         "isLValue": false,
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                         "lValueRequested": false,
                         "leftExpression": {
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-                            "id": 1894,
+                            "id": 1927,
                             "name": "targets",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1866,
-                            "src": "6622:7:9",
+                            "referencedDeclaration": 1899,
+                            "src": "6912:7:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                               "typeString": "address[] calldata"
                             }
                           },
-                          "id": 1895,
+                          "id": 1928,
                           "isConstant": false,
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                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "6622:14:9",
+                          "src": "6912:14:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -30689,31 +31294,31 @@
                         "operator": "==",
                         "rightExpression": {
                           "expression": {
-                            "id": 1896,
+                            "id": 1929,
                             "name": "datas",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1872,
-                            "src": "6640:5:9",
+                            "referencedDeclaration": 1905,
+                            "src": "6930:5:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
                               "typeString": "bytes calldata[] calldata"
                             }
                           },
-                          "id": 1897,
+                          "id": 1930,
                           "isConstant": false,
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                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "6640:12:9",
+                          "src": "6930:12:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           }
                         },
-                        "src": "6622:30:9",
+                        "src": "6912:30:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -30721,14 +31326,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206c656e677468206d69736d61746368",
-                        "id": 1899,
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                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "6660:35:9",
+                        "src": "6950:35:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_a34a486f9100b008712958931fe0a50ea69be145b7a3d1e8680fe7decf64e499",
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
@@ -30747,7 +31352,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
                         }
                       ],
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+                      "id": 1926,
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@@ -30755,13 +31360,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "6607:7:9",
+                      "src": "6897:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
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+                    "id": 1933,
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@@ -30769,31 +31374,31 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "6607:94:9",
+                    "src": "6897:94:9",
                     "tryCall": false,
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                       "typeString": "tuple()"
                     }
                   },
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+                  "src": "6897:94:9"
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+                    1936
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+                      "id": 1936,
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                       "name": "id",
-                      "nameLocation": "6716:2:9",
+                      "nameLocation": "7006:2:9",
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-                      "src": "6708:10:9",
+                      "scope": 1979,
+                      "src": "6998:10:9",
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@@ -30801,10 +31406,10 @@
                         "typeString": "bytes32"
                       },
                       "typeName": {
-                        "id": 1902,
+                        "id": 1935,
                         "name": "bytes32",
                         "nodeType": "ElementaryTypeName",
-                        "src": "6708:7:9",
+                        "src": "6998:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -30813,64 +31418,64 @@
                       "visibility": "internal"
                     }
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                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1866,
-                        "src": "6740:7:9",
+                        "referencedDeclaration": 1899,
+                        "src": "7030:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                           "typeString": "address[] calldata"
                         }
                       },
                       {
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+                        "id": 1939,
                         "name": "values",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1869,
-                        "src": "6749:6:9",
+                        "referencedDeclaration": 1902,
+                        "src": "7039:6:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
                           "typeString": "uint256[] calldata"
                         }
                       },
                       {
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+                        "id": 1940,
                         "name": "datas",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1872,
-                        "src": "6757:5:9",
+                        "referencedDeclaration": 1905,
+                        "src": "7047:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
                           "typeString": "bytes calldata[] calldata"
                         }
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                       {
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+                        "id": 1941,
                         "name": "predecessor",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1874,
-                        "src": "6764:11:9",
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+                        "src": "7054:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 1909,
+                        "id": 1942,
                         "name": "salt",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1876,
-                        "src": "6777:4:9",
+                        "referencedDeclaration": 1909,
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                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -30900,18 +31505,18 @@
                           "typeString": "bytes32"
                         }
                       ],
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+                      "id": 1937,
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-                      "referencedDeclaration": 1817,
-                      "src": "6721:18:9",
+                      "referencedDeclaration": 1850,
+                      "src": "7011:18:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_pure$_t_array$_t_address_$dyn_calldata_ptr_$_t_array$_t_uint256_$dyn_calldata_ptr_$_t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr_$_t_bytes32_$_t_bytes32_$returns$_t_bytes32_$",
                         "typeString": "function (address[] calldata,uint256[] calldata,bytes calldata[] calldata,bytes32,bytes32) pure returns (bytes32)"
                       }
                     },
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@@ -30919,7 +31524,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "6721:61:9",
+                    "src": "7011:61:9",
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                       "typeIdentifier": "t_bytes32",
@@ -30927,30 +31532,30 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "6708:74:9"
+                  "src": "6998:74:9"
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                 {
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                       {
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+                        "id": 1946,
                         "name": "id",
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                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1903,
-                        "src": "6798:2:9",
+                        "referencedDeclaration": 1936,
+                        "src": "7088:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 1914,
+                        "id": 1947,
                         "name": "delay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1878,
-                        "src": "6802:5:9",
+                        "referencedDeclaration": 1911,
+                        "src": "7092:5:9",
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                           "typeString": "uint256"
@@ -30968,18 +31573,18 @@
                           "typeString": "uint256"
                         }
                       ],
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                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1980,
-                      "src": "6788:9:9",
+                      "referencedDeclaration": 2013,
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                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_uint256_$returns$__$",
                         "typeString": "function (bytes32,uint256)"
                       }
                     },
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@@ -30987,45 +31592,45 @@
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                     "nodeType": "FunctionCall",
-                    "src": "6788:20:9",
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                       "typeString": "tuple()"
                     }
                   },
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+                  "src": "7078:20:9"
                 },
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+                    "id": 1977,
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                       {
                         "eventCall": {
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-                              "id": 1929,
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                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1903,
-                              "src": "6895:2:9",
+                              "referencedDeclaration": 1936,
+                              "src": "7185:2:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
                               }
                             },
                             {
-                              "id": 1930,
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                                 "typeString": "uint256"
@@ -31033,25 +31638,25 @@
                             },
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                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 1866,
-                                "src": "6918:7:9",
+                                "referencedDeclaration": 1899,
+                                "src": "7208:7:9",
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                                   "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                                   "typeString": "address[] calldata"
                                 }
                               },
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@@ -31062,7 +31667,7 @@
                               "isPure": false,
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                               "nodeType": "IndexAccess",
-                              "src": "6918:10:9",
+                              "src": "7208:10:9",
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                                 "typeString": "address"
@@ -31070,25 +31675,25 @@
                             },
                             {
                               "baseExpression": {
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-                                "referencedDeclaration": 1869,
-                                "src": "6938:6:9",
+                                "referencedDeclaration": 1902,
+                                "src": "7228:6:9",
                                 "typeDescriptions": {
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                                   "typeString": "uint256[] calldata"
                                 }
                               },
-                              "id": 1936,
+                              "id": 1969,
                               "indexExpression": {
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+                                "id": 1968,
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@@ -31099,7 +31704,7 @@
                               "isPure": false,
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                               "nodeType": "IndexAccess",
-                              "src": "6938:9:9",
+                              "src": "7228:9:9",
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                                 "typeString": "uint256"
@@ -31107,25 +31712,25 @@
                             },
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-                                "referencedDeclaration": 1872,
-                                "src": "6957:5:9",
+                                "referencedDeclaration": 1905,
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                                 "typeDescriptions": {
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                                   "typeString": "bytes calldata[] calldata"
                                 }
                               },
-                              "id": 1939,
+                              "id": 1972,
                               "indexExpression": {
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+                                "id": 1971,
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-                                "referencedDeclaration": 1918,
-                                "src": "6963:1:9",
+                                "referencedDeclaration": 1951,
+                                "src": "7253:1:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_uint256",
                                   "typeString": "uint256"
@@ -31136,31 +31741,31 @@
                               "isPure": false,
                               "lValueRequested": false,
                               "nodeType": "IndexAccess",
-                              "src": "6957:8:9",
+                              "src": "7247:8:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes_calldata_ptr",
                                 "typeString": "bytes calldata"
                               }
                             },
                             {
-                              "id": 1940,
+                              "id": 1973,
                               "name": "predecessor",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1874,
-                              "src": "6975:11:9",
+                              "referencedDeclaration": 1907,
+                              "src": "7265:11:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
                               }
                             },
                             {
-                              "id": 1941,
+                              "id": 1974,
                               "name": "delay",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1878,
-                              "src": "6996:5:9",
+                              "referencedDeclaration": 1911,
+                              "src": "7286:5:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_uint256",
                                 "typeString": "uint256"
@@ -31198,18 +31803,18 @@
                                 "typeString": "uint256"
                               }
                             ],
-                            "id": 1928,
+                            "id": 1961,
                             "name": "CallScheduled",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1449,
-                            "src": "6872:13:9",
+                            "referencedDeclaration": 1454,
+                            "src": "7162:13:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$_t_uint256_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$_t_bytes32_$_t_uint256_$returns$__$",
                               "typeString": "function (bytes32,uint256,address,uint256,bytes memory,bytes32,uint256)"
                             }
                           },
-                          "id": 1942,
+                          "id": 1975,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
@@ -31217,16 +31822,16 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "6872:137:9",
+                          "src": "7162:137:9",
                           "tryCall": false,
                           "typeDescriptions": {
                             "typeIdentifier": "t_tuple$__$",
                             "typeString": "tuple()"
                           }
                         },
-                        "id": 1943,
+                        "id": 1976,
                         "nodeType": "EmitStatement",
-                        "src": "6867:142:9"
+                        "src": "7157:142:9"
                       }
                     ]
                   },
@@ -31235,18 +31840,18 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
-                    "id": 1924,
+                    "id": 1957,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftExpression": {
-                      "id": 1921,
+                      "id": 1954,
                       "name": "i",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1918,
-                      "src": "6834:1:9",
+                      "referencedDeclaration": 1951,
+                      "src": "7124:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -31256,51 +31861,51 @@
                     "operator": "<",
                     "rightExpression": {
                       "expression": {
-                        "id": 1922,
+                        "id": 1955,
                         "name": "targets",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1866,
-                        "src": "6838:7:9",
+                        "referencedDeclaration": 1899,
+                        "src": "7128:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                           "typeString": "address[] calldata"
                         }
                       },
-                      "id": 1923,
+                      "id": 1956,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
                       "lValueRequested": false,
                       "memberName": "length",
                       "nodeType": "MemberAccess",
-                      "src": "6838:14:9",
+                      "src": "7128:14:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "6834:18:9",
+                    "src": "7124:18:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "id": 1945,
+                  "id": 1978,
                   "initializationExpression": {
                     "assignments": [
-                      1918
+                      1951
                     ],
                     "declarations": [
                       {
                         "constant": false,
-                        "id": 1918,
+                        "id": 1951,
                         "mutability": "mutable",
                         "name": "i",
-                        "nameLocation": "6827:1:9",
+                        "nameLocation": "7117:1:9",
                         "nodeType": "VariableDeclaration",
-                        "scope": 1945,
-                        "src": "6819:9:9",
+                        "scope": 1978,
+                        "src": "7109:9:9",
                         "stateVariable": false,
                         "storageLocation": "default",
                         "typeDescriptions": {
@@ -31308,10 +31913,10 @@
                           "typeString": "uint256"
                         },
                         "typeName": {
-                          "id": 1917,
+                          "id": 1950,
                           "name": "uint256",
                           "nodeType": "ElementaryTypeName",
-                          "src": "6819:7:9",
+                          "src": "7109:7:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -31320,17 +31925,17 @@
                         "visibility": "internal"
                       }
                     ],
-                    "id": 1920,
+                    "id": 1953,
                     "initialValue": {
                       "hexValue": "30",
-                      "id": 1919,
+                      "id": 1952,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": true,
                       "kind": "number",
                       "lValueRequested": false,
                       "nodeType": "Literal",
-                      "src": "6831:1:9",
+                      "src": "7121:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
@@ -31338,11 +31943,11 @@
                       "value": "0"
                     },
                     "nodeType": "VariableDeclarationStatement",
-                    "src": "6819:13:9"
+                    "src": "7109:13:9"
                   },
                   "loopExpression": {
                     "expression": {
-                      "id": 1926,
+                      "id": 1959,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -31350,14 +31955,14 @@
                       "nodeType": "UnaryOperation",
                       "operator": "++",
                       "prefix": true,
-                      "src": "6854:3:9",
+                      "src": "7144:3:9",
                       "subExpression": {
-                        "id": 1925,
+                        "id": 1958,
                         "name": "i",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1918,
-                        "src": "6856:1:9",
+                        "referencedDeclaration": 1951,
+                        "src": "7146:1:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -31368,70 +31973,70 @@
                         "typeString": "uint256"
                       }
                     },
-                    "id": 1927,
+                    "id": 1960,
                     "nodeType": "ExpressionStatement",
-                    "src": "6854:3:9"
+                    "src": "7144:3:9"
                   },
                   "nodeType": "ForStatement",
-                  "src": "6814:202:9"
+                  "src": "7104:202:9"
                 }
               ]
             },
             "documentation": {
-              "id": 1863,
+              "id": 1896,
               "nodeType": "StructuredDocumentation",
-              "src": "6051:227:9",
+              "src": "6341:227:9",
               "text": " @dev Schedule an operation containing a batch of transactions.\n Emits one {CallScheduled} event per transaction in the batch.\n Requirements:\n - the caller must have the 'proposer' role."
             },
             "functionSelector": "8f2a0bb0",
-            "id": 1947,
+            "id": 1980,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
                 "arguments": [
                   {
-                    "id": 1881,
+                    "id": 1914,
                     "name": "PROPOSER_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
                     "referencedDeclaration": 1407,
-                    "src": "6485:13:9",
+                    "src": "6775:13:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   }
                 ],
-                "id": 1882,
+                "id": 1915,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 1880,
+                  "id": 1913,
                   "name": "onlyRole",
                   "nodeType": "IdentifierPath",
                   "referencedDeclaration": 40,
-                  "src": "6476:8:9"
+                  "src": "6766:8:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "6476:23:9"
+                "src": "6766:23:9"
               }
             ],
             "name": "scheduleBatch",
-            "nameLocation": "6290:13:9",
+            "nameLocation": "6580:13:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 1879,
+              "id": 1912,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 1866,
+                  "id": 1899,
                   "mutability": "mutable",
                   "name": "targets",
-                  "nameLocation": "6328:7:9",
+                  "nameLocation": "6618:7:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1947,
-                  "src": "6309:26:9",
+                  "scope": 1980,
+                  "src": "6599:26:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -31440,19 +32045,19 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1864,
+                      "id": 1897,
                       "name": "address",
                       "nodeType": "ElementaryTypeName",
-                      "src": "6309:7:9",
+                      "src": "6599:7:9",
                       "stateMutability": "nonpayable",
                       "typeDescriptions": {
                         "typeIdentifier": "t_address",
                         "typeString": "address"
                       }
                     },
-                    "id": 1865,
+                    "id": 1898,
                     "nodeType": "ArrayTypeName",
-                    "src": "6309:9:9",
+                    "src": "6599:9:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_address_$dyn_storage_ptr",
                       "typeString": "address[]"
@@ -31462,13 +32067,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1869,
+                  "id": 1902,
                   "mutability": "mutable",
                   "name": "values",
-                  "nameLocation": "6360:6:9",
+                  "nameLocation": "6650:6:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1947,
-                  "src": "6341:25:9",
+                  "scope": 1980,
+                  "src": "6631:25:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -31477,18 +32082,18 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1867,
+                      "id": 1900,
                       "name": "uint256",
                       "nodeType": "ElementaryTypeName",
-                      "src": "6341:7:9",
+                      "src": "6631:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "id": 1868,
+                    "id": 1901,
                     "nodeType": "ArrayTypeName",
-                    "src": "6341:9:9",
+                    "src": "6631:9:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_uint256_$dyn_storage_ptr",
                       "typeString": "uint256[]"
@@ -31498,13 +32103,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1872,
+                  "id": 1905,
                   "mutability": "mutable",
                   "name": "datas",
-                  "nameLocation": "6389:5:9",
+                  "nameLocation": "6679:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1947,
-                  "src": "6372:22:9",
+                  "scope": 1980,
+                  "src": "6662:22:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -31513,18 +32118,18 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 1870,
+                      "id": 1903,
                       "name": "bytes",
                       "nodeType": "ElementaryTypeName",
-                      "src": "6372:5:9",
+                      "src": "6662:5:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_bytes_storage_ptr",
                         "typeString": "bytes"
                       }
                     },
-                    "id": 1871,
+                    "id": 1904,
                     "nodeType": "ArrayTypeName",
-                    "src": "6372:7:9",
+                    "src": "6662:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_array$_t_bytes_storage_$dyn_storage_ptr",
                       "typeString": "bytes[]"
@@ -31534,13 +32139,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1874,
+                  "id": 1907,
                   "mutability": "mutable",
                   "name": "predecessor",
-                  "nameLocation": "6408:11:9",
+                  "nameLocation": "6698:11:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1947,
-                  "src": "6400:19:9",
+                  "scope": 1980,
+                  "src": "6690:19:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -31548,10 +32153,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1873,
+                    "id": 1906,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "6400:7:9",
+                    "src": "6690:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -31561,13 +32166,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1876,
+                  "id": 1909,
                   "mutability": "mutable",
                   "name": "salt",
-                  "nameLocation": "6433:4:9",
+                  "nameLocation": "6723:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1947,
-                  "src": "6425:12:9",
+                  "scope": 1980,
+                  "src": "6715:12:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -31575,10 +32180,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 1875,
+                    "id": 1908,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "6425:7:9",
+                    "src": "6715:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -31588,13 +32193,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 1878,
+                  "id": 1911,
                   "mutability": "mutable",
                   "name": "delay",
-                  "nameLocation": "6451:5:9",
+                  "nameLocation": "6741:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 1947,
-                  "src": "6443:13:9",
+                  "scope": 1980,
+                  "src": "6733:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -31602,10 +32207,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 1877,
+                    "id": 1910,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "6443:7:9",
+                    "src": "6733:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -31614,31 +32219,31 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "6303:157:9"
+              "src": "6593:157:9"
             },
             "returnParameters": {
-              "id": 1883,
+              "id": 1916,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "6500:0:9"
+              "src": "6790:0:9"
             },
-            "scope": 2391,
-            "src": "6281:739:9",
+            "scope": 2424,
+            "src": "6571:739:9",
             "stateMutability": "nonpayable",
             "virtual": true,
             "visibility": "public"
           },
           {
             "body": {
-              "id": 1979,
+              "id": 2012,
               "nodeType": "Block",
-              "src": "7168:204:9",
+              "src": "7458:204:9",
               "statements": [
                 {
                   "expression": {
                     "arguments": [
                       {
-                        "id": 1959,
+                        "id": 1992,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
@@ -31646,16 +32251,16 @@
                         "nodeType": "UnaryOperation",
                         "operator": "!",
                         "prefix": true,
-                        "src": "7182:16:9",
+                        "src": "7472:16:9",
                         "subExpression": {
                           "arguments": [
                             {
-                              "id": 1957,
+                              "id": 1990,
                               "name": "id",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 1950,
-                              "src": "7195:2:9",
+                              "referencedDeclaration": 1983,
+                              "src": "7485:2:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
@@ -31669,18 +32274,18 @@
                                 "typeString": "bytes32"
                               }
                             ],
-                            "id": 1956,
+                            "id": 1989,
                             "name": "isOperation",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 1642,
-                            "src": "7183:11:9",
+                            "referencedDeclaration": 1675,
+                            "src": "7473:11:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_bool_$",
                               "typeString": "function (bytes32) view returns (bool)"
                             }
                           },
-                          "id": 1958,
+                          "id": 1991,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
@@ -31688,7 +32293,7 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "7183:15:9",
+                          "src": "7473:15:9",
                           "tryCall": false,
                           "typeDescriptions": {
                             "typeIdentifier": "t_bool",
@@ -31702,14 +32307,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206f7065726174696f6e20616c7265616479207363686564756c6564",
-                        "id": 1960,
+                        "id": 1993,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "7200:47:9",
+                        "src": "7490:47:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_498a98edde27c28694cc7d4941f82dd71ff5085e4a93f35609f504b4979a0e12",
                           "typeString": "literal_string \"BEMultiSigWallet: operation already scheduled\""
@@ -31728,7 +32333,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: operation already scheduled\""
                         }
                       ],
-                      "id": 1955,
+                      "id": 1988,
                       "name": "require",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [
@@ -31736,13 +32341,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "7174:7:9",
+                      "src": "7464:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
-                    "id": 1961,
+                    "id": 1994,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -31750,16 +32355,16 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "7174:74:9",
+                    "src": "7464:74:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 1962,
+                  "id": 1995,
                   "nodeType": "ExpressionStatement",
-                  "src": "7174:74:9"
+                  "src": "7464:74:9"
                 },
                 {
                   "expression": {
@@ -31769,18 +32374,18 @@
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         },
-                        "id": 1966,
+                        "id": 1999,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
                         "lValueRequested": false,
                         "leftExpression": {
-                          "id": 1964,
+                          "id": 1997,
                           "name": "delay",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1952,
-                          "src": "7262:5:9",
+                          "referencedDeclaration": 1985,
+                          "src": "7552:5:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -31789,18 +32394,18 @@
                         "nodeType": "BinaryOperation",
                         "operator": ">=",
                         "rightExpression": {
-                          "id": 1965,
+                          "id": 1998,
                           "name": "minDelay",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1430,
-                          "src": "7271:8:9",
+                          "referencedDeclaration": 1435,
+                          "src": "7561:8:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           }
                         },
-                        "src": "7262:17:9",
+                        "src": "7552:17:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -31808,14 +32413,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a20696e73756666696369656e742064656c6179",
-                        "id": 1967,
+                        "id": 2000,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "7281:38:9",
+                        "src": "7571:38:9",
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@@ -31952,61 +32557,61 @@
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                         "name": "delay",
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@@ -32053,25 +32658,25 @@
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@@ -32098,18 +32703,18 @@
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@@ -32265,18 +32870,18 @@
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-                      "src": "7710:9:9",
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               "nodeType": "StructuredDocumentation",
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@@ -32416,18 +33021,18 @@
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                         }
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@@ -32513,25 +33118,25 @@
                     "leftHandSide": {
                       "baseExpression": {
                         "baseExpression": {
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+                          "id": 2055,
                           "name": "confirmations",
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                           "overloadedDeclarations": [],
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-                          "src": "8069:13:9",
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                           "typeDescriptions": {
                             "typeIdentifier": "t_mapping$_t_bytes32_$_t_mapping$_t_address_$_t_bool_$_$",
                             "typeString": "mapping(bytes32 => mapping(address => bool))"
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                         },
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                           "name": "id",
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                             "typeString": "bytes32"
@@ -32542,34 +33147,34 @@
                         "isPure": false,
                         "lValueRequested": false,
                         "nodeType": "IndexAccess",
-                        "src": "8069:17:9",
+                        "src": "8358:17:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_mapping$_t_address_$_t_bool_$",
                           "typeString": "mapping(address => bool)"
                         }
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                           "referencedDeclaration": 4294967281,
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                           "typeDescriptions": {
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                             "typeString": "msg"
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                         "memberName": "sender",
                         "nodeType": "MemberAccess",
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@@ -32580,7 +33185,7 @@
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                           "referencedDeclaration": 4294967281,
-                          "src": "8129:3:9",
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                           "typeDescriptions": {
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                             "typeString": "msg"
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                         "memberName": "sender",
                         "nodeType": "MemberAccess",
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                           "typeString": "address"
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                         "overloadedDeclarations": [],
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-                        "src": "8141:2:9",
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@@ -32667,18 +33272,18 @@
                           "typeString": "bytes32"
                         }
                       ],
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                       "name": "Confirmation",
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-                      "src": "8116:12:9",
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                         "typeString": "function (address,bytes32)"
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@@ -32686,354 +33291,27 @@
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                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "8116:28:9",
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                       "typeString": "tuple()"
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+              "id": 2040,
               "nodeType": "StructuredDocumentation",
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+              "src": "8022:131:9",
               "text": " @dev Allows an executor to confirm a transaction.\n Requirements\n - the caller must have the 'executor' role."
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-              "text": "  @dev Allows an executor to confirm multiple transactions."
-            },
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@@ -33041,11 +33319,11 @@
                 "arguments": [
                   {
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-                    "name": "EXECUTOR_ROLE",
+                    "name": "CONFIRM_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
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@@ -33058,15 +33336,15 @@
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+                "src": "8211:32:9"
               }
             ],
-            "name": "confirmTransactionBatch",
-            "nameLocation": "8238:23:9",
+            "name": "confirmTransaction",
+            "nameLocation": "8165:18:9",
             "nodeType": "FunctionDefinition",
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@@ -33076,11 +33354,338 @@
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+                      "typeString": "bytes32"
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+                                  "typeString": "uint256"
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+                          "typeString": "uint256"
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+              "text": "  @dev Allows an executor to confirm multiple transactions."
+            },
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@@ -33089,18 +33694,18 @@
                   },
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                       "name": "bytes32",
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@@ -33109,25 +33714,25 @@
                   "visibility": "internal"
                 }
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             "visibility": "public"
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@@ -33135,12 +33740,12 @@
                       {
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                             "overloadedDeclarations": [],
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@@ -33154,18 +33759,18 @@
                               "typeString": "bytes32"
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                           "overloadedDeclarations": [],
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                             "typeString": "function (bytes32) view returns (bool)"
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                         "nodeType": "FunctionCall",
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                         "lValueRequested": false,
                         "nodeType": "Literal",
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@@ -33208,7 +33813,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: operation not exist or finished\""
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                           "name": "confirmations",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
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-                          "src": "8786:13:9",
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                             "typeString": "mapping(bytes32 => mapping(address => bool))"
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                           "overloadedDeclarations": [],
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                         "nodeType": "IndexAccess",
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                           "referencedDeclaration": 4294967281,
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                             "typeString": "msg"
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                         "memberName": "sender",
                         "nodeType": "MemberAccess",
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@@ -33318,7 +33923,7 @@
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                           "overloadedDeclarations": [],
                           "referencedDeclaration": 4294967281,
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                             "typeString": "msg"
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                         "lValueRequested": false,
                         "memberName": "sender",
                         "nodeType": "MemberAccess",
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                           "typeString": "address"
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                         "overloadedDeclarations": [],
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@@ -33405,18 +34010,18 @@
                           "typeString": "bytes32"
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                       ],
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                       "name": "Revocation",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
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-                      "src": "8834:10:9",
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                         "typeString": "function (address,bytes32)"
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@@ -33424,354 +34029,27 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "8834:26:9",
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               "nodeType": "StructuredDocumentation",
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@@ -33779,11 +34057,11 @@
                 "arguments": [
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@@ -33796,15 +34074,15 @@
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@@ -33814,11 +34092,338 @@
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@@ -33827,18 +34432,18 @@
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@@ -33847,40 +34452,40 @@
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@@ -33888,10 +34493,10 @@
                         "typeString": "bytes32"
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@@ -33900,64 +34505,64 @@
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@@ -33987,18 +34592,18 @@
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@@ -34006,7 +34611,7 @@
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@@ -34014,30 +34619,30 @@
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@@ -34055,18 +34660,18 @@
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                         "typeString": "function (bytes32,bytes32) view"
                       }
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@@ -34074,27 +34679,27 @@
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                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "9629:28:9",
+                    "src": "9915:28:9",
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                       "typeString": "tuple()"
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                         "name": "id",
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                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2148,
-                        "src": "9669:2:9",
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                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -34102,14 +34707,14 @@
                       },
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                         "hexValue": "30",
-                        "id": 2164,
+                        "id": 2197,
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                         "kind": "number",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "9673:1:9",
+                        "src": "9959:1:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_rational_0_by_1",
                           "typeString": "int_const 0"
@@ -34117,36 +34722,36 @@
                         "value": "0"
                       },
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+                        "id": 2198,
                         "name": "target",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2133,
-                        "src": "9676:6:9",
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                           "typeIdentifier": "t_address",
                           "typeString": "address"
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                         "name": "value",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2135,
-                        "src": "9684:5:9",
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+                        "src": "9970:5:9",
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                           "typeString": "uint256"
                         }
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                       {
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                         "name": "data",
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                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2137,
-                        "src": "9691:4:9",
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                           "typeIdentifier": "t_bytes_calldata_ptr",
                           "typeString": "bytes calldata"
@@ -34176,18 +34781,18 @@
                           "typeString": "bytes calldata"
                         }
                       ],
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                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2354,
-                      "src": "9663:5:9",
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                         "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_uint256_$_t_address_$_t_uint256_$_t_bytes_calldata_ptr_$returns$__$",
                         "typeString": "function (bytes32,uint256,address,uint256,bytes calldata)"
                       }
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-                    "id": 2168,
+                    "id": 2201,
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@@ -34195,27 +34800,27 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "9663:33:9",
+                    "src": "9949:33:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
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                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2148,
-                        "src": "9713:2:9",
+                        "referencedDeclaration": 2181,
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                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -34229,18 +34834,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 2170,
+                      "id": 2203,
                       "name": "_afterCall",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2317,
-                      "src": "9702:10:9",
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                         "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$returns$__$",
                         "typeString": "function (bytes32)"
                       }
                     },
-                    "id": 2172,
+                    "id": 2205,
                     "isConstant": false,
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@@ -34248,74 +34853,74 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "9702:14:9",
+                    "src": "9988:14:9",
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                     "typeDescriptions": {
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                       "typeString": "tuple()"
                     }
                   },
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               ]
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+              "id": 2164,
               "nodeType": "StructuredDocumentation",
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+              "src": "9450:199:9",
               "text": " @dev Execute an (ready) operation containing a single transaction.\n Emits a {CallExecuted} event.\n Requirements:\n - the caller must have the 'executor' role."
             },
             "functionSelector": "134008d3",
-            "id": 2175,
+            "id": 2208,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
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                   {
-                    "id": 2144,
+                    "id": 2177,
                     "name": "EXECUTOR_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
                     "referencedDeclaration": 1412,
-                    "src": "9536:13:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   }
                 ],
-                "id": 2145,
+                "id": 2178,
                 "kind": "modifierInvocation",
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                 },
                 "nodeType": "ModifierInvocation",
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               }
             ],
             "name": "execute",
-            "nameLocation": "9375:7:9",
+            "nameLocation": "9661:7:9",
             "nodeType": "FunctionDefinition",
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+              "id": 2175,
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-                  "src": "9388:14:9",
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@@ -34323,10 +34928,10 @@
                     "typeString": "address"
                   },
                   "typeName": {
-                    "id": 2132,
+                    "id": 2165,
                     "name": "address",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9388:7:9",
+                    "src": "9674:7:9",
                     "stateMutability": "nonpayable",
                     "typeDescriptions": {
                       "typeIdentifier": "t_address",
@@ -34337,13 +34942,13 @@
                 },
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@@ -34351,10 +34956,10 @@
                     "typeString": "uint256"
                   },
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+                    "id": 2167,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9408:7:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -34364,13 +34969,13 @@
                 },
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+                  "scope": 2208,
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                   "stateVariable": false,
                   "storageLocation": "calldata",
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@@ -34378,10 +34983,10 @@
                     "typeString": "bytes"
                   },
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+                    "id": 2169,
                     "name": "bytes",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9427:5:9",
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                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes_storage_ptr",
                       "typeString": "bytes"
@@ -34391,13 +34996,13 @@
                 },
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                   "mutability": "mutable",
                   "name": "predecessor",
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@@ -34405,10 +35010,10 @@
                     "typeString": "bytes32"
                   },
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-                    "id": 2138,
+                    "id": 2171,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9452:7:9",
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                       "typeString": "bytes32"
@@ -34418,13 +35023,13 @@
                 },
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                   "mutability": "mutable",
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-                  "nameLocation": "9485:4:9",
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@@ -34432,10 +35037,10 @@
                     "typeString": "bytes32"
                   },
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+                    "id": 2173,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "9477:7:9",
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                       "typeString": "bytes32"
@@ -34444,25 +35049,25 @@
                   "visibility": "internal"
                 }
               ],
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-            "src": "9366:355:9",
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             "stateMutability": "payable",
             "virtual": true,
             "visibility": "public"
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+              "id": 2292,
               "nodeType": "Block",
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@@ -34472,32 +35077,32 @@
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         },
-                        "id": 2200,
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                         "isConstant": false,
                         "isLValue": false,
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                         "lValueRequested": false,
                         "leftExpression": {
                           "expression": {
-                            "id": 2196,
+                            "id": 2229,
                             "name": "targets",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2179,
-                            "src": "10199:7:9",
+                            "referencedDeclaration": 2212,
+                            "src": "10485:7:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                               "typeString": "address[] calldata"
                             }
                           },
-                          "id": 2197,
+                          "id": 2230,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "10199:14:9",
+                          "src": "10485:14:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -34507,31 +35112,31 @@
                         "operator": "==",
                         "rightExpression": {
                           "expression": {
-                            "id": 2198,
+                            "id": 2231,
                             "name": "values",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2182,
-                            "src": "10217:6:9",
+                            "referencedDeclaration": 2215,
+                            "src": "10503:6:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
                               "typeString": "uint256[] calldata"
                             }
                           },
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                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "10217:13:9",
+                          "src": "10503:13:9",
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                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           }
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-                        "src": "10199:31:9",
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@@ -34539,14 +35144,14 @@
                       },
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                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "10238:35:9",
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                         "typeDescriptions": {
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                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
@@ -34565,7 +35170,7 @@
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                         }
                       ],
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@@ -34573,13 +35178,13 @@
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                       ],
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                         "typeString": "function (bool,string memory) pure"
                       }
                     },
-                    "id": 2202,
+                    "id": 2235,
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@@ -34587,16 +35192,16 @@
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                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "10184:95:9",
+                    "src": "10470:95:9",
                     "tryCall": false,
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                       "typeString": "tuple()"
                     }
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@@ -34606,32 +35211,32 @@
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         },
-                        "id": 2209,
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                         "lValueRequested": false,
                         "leftExpression": {
                           "expression": {
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                             "name": "targets",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2179,
-                            "src": "10300:7:9",
+                            "referencedDeclaration": 2212,
+                            "src": "10586:7:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                               "typeString": "address[] calldata"
                             }
                           },
-                          "id": 2206,
+                          "id": 2239,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "10300:14:9",
+                          "src": "10586:14:9",
                           "typeDescriptions": {
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                             "typeString": "uint256"
@@ -34641,31 +35246,31 @@
                         "operator": "==",
                         "rightExpression": {
                           "expression": {
-                            "id": 2207,
+                            "id": 2240,
                             "name": "datas",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2185,
-                            "src": "10318:5:9",
+                            "referencedDeclaration": 2218,
+                            "src": "10604:5:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
                               "typeString": "bytes calldata[] calldata"
                             }
                           },
-                          "id": 2208,
+                          "id": 2241,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
                           "lValueRequested": false,
                           "memberName": "length",
                           "nodeType": "MemberAccess",
-                          "src": "10318:12:9",
+                          "src": "10604:12:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           }
                         },
-                        "src": "10300:30:9",
+                        "src": "10586:30:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -34673,14 +35278,14 @@
                       },
                       {
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                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "10338:35:9",
+                        "src": "10624:35:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_a34a486f9100b008712958931fe0a50ea69be145b7a3d1e8680fe7decf64e499",
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
@@ -34699,7 +35304,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: length mismatch\""
                         }
                       ],
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@@ -34707,13 +35312,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "10285:7:9",
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                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
-                    "id": 2211,
+                    "id": 2244,
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@@ -34721,31 +35326,31 @@
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                     "nodeType": "FunctionCall",
-                    "src": "10285:94:9",
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                       "mutability": "mutable",
                       "name": "id",
-                      "nameLocation": "10394:2:9",
+                      "nameLocation": "10680:2:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 2259,
-                      "src": "10386:10:9",
+                      "scope": 2292,
+                      "src": "10672:10:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -34753,10 +35358,10 @@
                         "typeString": "bytes32"
                       },
                       "typeName": {
-                        "id": 2213,
+                        "id": 2246,
                         "name": "bytes32",
                         "nodeType": "ElementaryTypeName",
-                        "src": "10386:7:9",
+                        "src": "10672:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -34765,64 +35370,64 @@
                       "visibility": "internal"
                     }
                   ],
-                  "id": 2222,
+                  "id": 2255,
                   "initialValue": {
                     "arguments": [
                       {
-                        "id": 2216,
+                        "id": 2249,
                         "name": "targets",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2179,
-                        "src": "10418:7:9",
+                        "referencedDeclaration": 2212,
+                        "src": "10704:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                           "typeString": "address[] calldata"
                         }
                       },
                       {
-                        "id": 2217,
+                        "id": 2250,
                         "name": "values",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2182,
-                        "src": "10427:6:9",
+                        "referencedDeclaration": 2215,
+                        "src": "10713:6:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
                           "typeString": "uint256[] calldata"
                         }
                       },
                       {
-                        "id": 2218,
+                        "id": 2251,
                         "name": "datas",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2185,
-                        "src": "10435:5:9",
+                        "referencedDeclaration": 2218,
+                        "src": "10721:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
                           "typeString": "bytes calldata[] calldata"
                         }
                       },
                       {
-                        "id": 2219,
+                        "id": 2252,
                         "name": "predecessor",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2187,
-                        "src": "10442:11:9",
+                        "referencedDeclaration": 2220,
+                        "src": "10728:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 2220,
+                        "id": 2253,
                         "name": "salt",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2189,
-                        "src": "10455:4:9",
+                        "referencedDeclaration": 2222,
+                        "src": "10741:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -34852,18 +35457,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 2215,
+                      "id": 2248,
                       "name": "hashOperationBatch",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1817,
-                      "src": "10399:18:9",
+                      "referencedDeclaration": 1850,
+                      "src": "10685:18:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_pure$_t_array$_t_address_$dyn_calldata_ptr_$_t_array$_t_uint256_$dyn_calldata_ptr_$_t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr_$_t_bytes32_$_t_bytes32_$returns$_t_bytes32_$",
                         "typeString": "function (address[] calldata,uint256[] calldata,bytes calldata[] calldata,bytes32,bytes32) pure returns (bytes32)"
                       }
                     },
-                    "id": 2221,
+                    "id": 2254,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -34871,7 +35476,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "10399:61:9",
+                    "src": "10685:61:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
@@ -34879,30 +35484,30 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "10386:74:9"
+                  "src": "10672:74:9"
                 },
                 {
                   "expression": {
                     "arguments": [
                       {
-                        "id": 2224,
+                        "id": 2257,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2214,
-                        "src": "10478:2:9",
+                        "referencedDeclaration": 2247,
+                        "src": "10764:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 2225,
+                        "id": 2258,
                         "name": "predecessor",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2187,
-                        "src": "10482:11:9",
+                        "referencedDeclaration": 2220,
+                        "src": "10768:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -34920,18 +35525,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 2223,
+                      "id": 2256,
                       "name": "_beforeCall",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2297,
-                      "src": "10466:11:9",
+                      "referencedDeclaration": 2330,
+                      "src": "10752:11:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_view$_t_bytes32_$_t_bytes32_$returns$__$",
                         "typeString": "function (bytes32,bytes32) view"
                       }
                     },
-                    "id": 2226,
+                    "id": 2259,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -34939,45 +35544,45 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "10466:28:9",
+                    "src": "10752:28:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2227,
+                  "id": 2260,
                   "nodeType": "ExpressionStatement",
-                  "src": "10466:28:9"
+                  "src": "10752:28:9"
                 },
                 {
                   "body": {
-                    "id": 2253,
+                    "id": 2286,
                     "nodeType": "Block",
-                    "src": "10545:60:9",
+                    "src": "10831:60:9",
                     "statements": [
                       {
                         "expression": {
                           "arguments": [
                             {
-                              "id": 2240,
+                              "id": 2273,
                               "name": "id",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 2214,
-                              "src": "10559:2:9",
+                              "referencedDeclaration": 2247,
+                              "src": "10845:2:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes32",
                                 "typeString": "bytes32"
                               }
                             },
                             {
-                              "id": 2241,
+                              "id": 2274,
                               "name": "i",
                               "nodeType": "Identifier",
                               "overloadedDeclarations": [],
-                              "referencedDeclaration": 2229,
-                              "src": "10563:1:9",
+                              "referencedDeclaration": 2262,
+                              "src": "10849:1:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_uint256",
                                 "typeString": "uint256"
@@ -34985,25 +35590,25 @@
                             },
                             {
                               "baseExpression": {
-                                "id": 2242,
+                                "id": 2275,
                                 "name": "targets",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 2179,
-                                "src": "10566:7:9",
+                                "referencedDeclaration": 2212,
+                                "src": "10852:7:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                                   "typeString": "address[] calldata"
                                 }
                               },
-                              "id": 2244,
+                              "id": 2277,
                               "indexExpression": {
-                                "id": 2243,
+                                "id": 2276,
                                 "name": "i",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 2229,
-                                "src": "10574:1:9",
+                                "referencedDeclaration": 2262,
+                                "src": "10860:1:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_uint256",
                                   "typeString": "uint256"
@@ -35014,7 +35619,7 @@
                               "isPure": false,
                               "lValueRequested": false,
                               "nodeType": "IndexAccess",
-                              "src": "10566:10:9",
+                              "src": "10852:10:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_address",
                                 "typeString": "address"
@@ -35022,25 +35627,25 @@
                             },
                             {
                               "baseExpression": {
-                                "id": 2245,
+                                "id": 2278,
                                 "name": "values",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 2182,
-                                "src": "10578:6:9",
+                                "referencedDeclaration": 2215,
+                                "src": "10864:6:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_array$_t_uint256_$dyn_calldata_ptr",
                                   "typeString": "uint256[] calldata"
                                 }
                               },
-                              "id": 2247,
+                              "id": 2280,
                               "indexExpression": {
-                                "id": 2246,
+                                "id": 2279,
                                 "name": "i",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 2229,
-                                "src": "10585:1:9",
+                                "referencedDeclaration": 2262,
+                                "src": "10871:1:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_uint256",
                                   "typeString": "uint256"
@@ -35051,7 +35656,7 @@
                               "isPure": false,
                               "lValueRequested": false,
                               "nodeType": "IndexAccess",
-                              "src": "10578:9:9",
+                              "src": "10864:9:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_uint256",
                                 "typeString": "uint256"
@@ -35059,25 +35664,25 @@
                             },
                             {
                               "baseExpression": {
-                                "id": 2248,
+                                "id": 2281,
                                 "name": "datas",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 2185,
-                                "src": "10589:5:9",
+                                "referencedDeclaration": 2218,
+                                "src": "10875:5:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_array$_t_bytes_calldata_ptr_$dyn_calldata_ptr",
                                   "typeString": "bytes calldata[] calldata"
                                 }
                               },
-                              "id": 2250,
+                              "id": 2283,
                               "indexExpression": {
-                                "id": 2249,
+                                "id": 2282,
                                 "name": "i",
                                 "nodeType": "Identifier",
                                 "overloadedDeclarations": [],
-                                "referencedDeclaration": 2229,
-                                "src": "10595:1:9",
+                                "referencedDeclaration": 2262,
+                                "src": "10881:1:9",
                                 "typeDescriptions": {
                                   "typeIdentifier": "t_uint256",
                                   "typeString": "uint256"
@@ -35088,7 +35693,7 @@
                               "isPure": false,
                               "lValueRequested": false,
                               "nodeType": "IndexAccess",
-                              "src": "10589:8:9",
+                              "src": "10875:8:9",
                               "typeDescriptions": {
                                 "typeIdentifier": "t_bytes_calldata_ptr",
                                 "typeString": "bytes calldata"
@@ -35118,18 +35723,18 @@
                                 "typeString": "bytes calldata"
                               }
                             ],
-                            "id": 2239,
+                            "id": 2272,
                             "name": "_call",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2354,
-                            "src": "10553:5:9",
+                            "referencedDeclaration": 2387,
+                            "src": "10839:5:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$_t_uint256_$_t_address_$_t_uint256_$_t_bytes_calldata_ptr_$returns$__$",
                               "typeString": "function (bytes32,uint256,address,uint256,bytes calldata)"
                             }
                           },
-                          "id": 2251,
+                          "id": 2284,
                           "isConstant": false,
                           "isLValue": false,
                           "isPure": false,
@@ -35137,16 +35742,16 @@
                           "lValueRequested": false,
                           "names": [],
                           "nodeType": "FunctionCall",
-                          "src": "10553:45:9",
+                          "src": "10839:45:9",
                           "tryCall": false,
                           "typeDescriptions": {
                             "typeIdentifier": "t_tuple$__$",
                             "typeString": "tuple()"
                           }
                         },
-                        "id": 2252,
+                        "id": 2285,
                         "nodeType": "ExpressionStatement",
-                        "src": "10553:45:9"
+                        "src": "10839:45:9"
                       }
                     ]
                   },
@@ -35155,18 +35760,18 @@
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     },
-                    "id": 2235,
+                    "id": 2268,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftExpression": {
-                      "id": 2232,
+                      "id": 2265,
                       "name": "i",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2229,
-                      "src": "10520:1:9",
+                      "referencedDeclaration": 2262,
+                      "src": "10806:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -35176,51 +35781,51 @@
                     "operator": "<",
                     "rightExpression": {
                       "expression": {
-                        "id": 2233,
+                        "id": 2266,
                         "name": "targets",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2179,
-                        "src": "10524:7:9",
+                        "referencedDeclaration": 2212,
+                        "src": "10810:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_array$_t_address_$dyn_calldata_ptr",
                           "typeString": "address[] calldata"
                         }
                       },
-                      "id": 2234,
+                      "id": 2267,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
                       "lValueRequested": false,
                       "memberName": "length",
                       "nodeType": "MemberAccess",
-                      "src": "10524:14:9",
+                      "src": "10810:14:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "10520:18:9",
+                    "src": "10806:18:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bool",
                       "typeString": "bool"
                     }
                   },
-                  "id": 2254,
+                  "id": 2287,
                   "initializationExpression": {
                     "assignments": [
-                      2229
+                      2262
                     ],
                     "declarations": [
                       {
                         "constant": false,
-                        "id": 2229,
+                        "id": 2262,
                         "mutability": "mutable",
                         "name": "i",
-                        "nameLocation": "10513:1:9",
+                        "nameLocation": "10799:1:9",
                         "nodeType": "VariableDeclaration",
-                        "scope": 2254,
-                        "src": "10505:9:9",
+                        "scope": 2287,
+                        "src": "10791:9:9",
                         "stateVariable": false,
                         "storageLocation": "default",
                         "typeDescriptions": {
@@ -35228,10 +35833,10 @@
                           "typeString": "uint256"
                         },
                         "typeName": {
-                          "id": 2228,
+                          "id": 2261,
                           "name": "uint256",
                           "nodeType": "ElementaryTypeName",
-                          "src": "10505:7:9",
+                          "src": "10791:7:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
@@ -35240,17 +35845,17 @@
                         "visibility": "internal"
                       }
                     ],
-                    "id": 2231,
+                    "id": 2264,
                     "initialValue": {
                       "hexValue": "30",
-                      "id": 2230,
+                      "id": 2263,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": true,
                       "kind": "number",
                       "lValueRequested": false,
                       "nodeType": "Literal",
-                      "src": "10517:1:9",
+                      "src": "10803:1:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_rational_0_by_1",
                         "typeString": "int_const 0"
@@ -35258,11 +35863,11 @@
                       "value": "0"
                     },
                     "nodeType": "VariableDeclarationStatement",
-                    "src": "10505:13:9"
+                    "src": "10791:13:9"
                   },
                   "loopExpression": {
                     "expression": {
-                      "id": 2237,
+                      "id": 2270,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -35270,14 +35875,14 @@
                       "nodeType": "UnaryOperation",
                       "operator": "++",
                       "prefix": true,
-                      "src": "10540:3:9",
+                      "src": "10826:3:9",
                       "subExpression": {
-                        "id": 2236,
+                        "id": 2269,
                         "name": "i",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2229,
-                        "src": "10542:1:9",
+                        "referencedDeclaration": 2262,
+                        "src": "10828:1:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -35288,23 +35893,23 @@
                         "typeString": "uint256"
                       }
                     },
-                    "id": 2238,
+                    "id": 2271,
                     "nodeType": "ExpressionStatement",
-                    "src": "10540:3:9"
+                    "src": "10826:3:9"
                   },
                   "nodeType": "ForStatement",
-                  "src": "10500:105:9"
+                  "src": "10786:105:9"
                 },
                 {
                   "expression": {
                     "arguments": [
                       {
-                        "id": 2256,
+                        "id": 2289,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2214,
-                        "src": "10621:2:9",
+                        "referencedDeclaration": 2247,
+                        "src": "10907:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -35318,18 +35923,18 @@
                           "typeString": "bytes32"
                         }
                       ],
-                      "id": 2255,
+                      "id": 2288,
                       "name": "_afterCall",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2317,
-                      "src": "10610:10:9",
+                      "referencedDeclaration": 2350,
+                      "src": "10896:10:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_internal_nonpayable$_t_bytes32_$returns$__$",
                         "typeString": "function (bytes32)"
                       }
                     },
-                    "id": 2257,
+                    "id": 2290,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -35337,74 +35942,74 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "10610:14:9",
+                    "src": "10896:14:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2258,
+                  "id": 2291,
                   "nodeType": "ExpressionStatement",
-                  "src": "10610:14:9"
+                  "src": "10896:14:9"
                 }
               ]
             },
             "documentation": {
-              "id": 2176,
+              "id": 2209,
               "nodeType": "StructuredDocumentation",
-              "src": "9725:233:9",
+              "src": "10011:233:9",
               "text": " @dev Execute an (ready) operation containing a batch of transactions.\n Emits one {CallExecuted} event per transaction in the batch.\n Requirements:\n - the caller must have the 'executor' role."
             },
             "functionSelector": "e38335e5",
-            "id": 2260,
+            "id": 2293,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
                 "arguments": [
                   {
-                    "id": 2192,
+                    "id": 2225,
                     "name": "EXECUTOR_ROLE",
                     "nodeType": "Identifier",
                     "overloadedDeclarations": [],
                     "referencedDeclaration": 1412,
-                    "src": "10163:13:9",
+                    "src": "10449:13:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
                     }
                   }
                 ],
-                "id": 2193,
+                "id": 2226,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 2191,
+                  "id": 2224,
                   "name": "onlyRoleOrOpenRole",
                   "nodeType": "IdentifierPath",
-                  "referencedDeclaration": 1622,
-                  "src": "10144:18:9"
+                  "referencedDeclaration": 1655,
+                  "src": "10430:18:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "10144:33:9"
+                "src": "10430:33:9"
               }
             ],
             "name": "executeBatch",
-            "nameLocation": "9970:12:9",
+            "nameLocation": "10256:12:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 2190,
+              "id": 2223,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 2179,
+                  "id": 2212,
                   "mutability": "mutable",
                   "name": "targets",
-                  "nameLocation": "10007:7:9",
+                  "nameLocation": "10293:7:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2260,
-                  "src": "9988:26:9",
+                  "scope": 2293,
+                  "src": "10274:26:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -35413,19 +36018,19 @@
                   },
                   "typeName": {
                     "baseType": {
-                      "id": 2177,
+                      "id": 2210,
                       "name": "address",
                       "nodeType": "ElementaryTypeName",
-                      "src": "9988:7:9",
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                         "typeString": "address"
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@@ -35435,13 +36040,13 @@
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@@ -35450,18 +36055,18 @@
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                       "typeString": "uint256[]"
@@ -35471,13 +36076,13 @@
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@@ -35486,18 +36091,18 @@
                   },
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                       "name": "bytes",
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                         "typeString": "bytes"
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                       "typeString": "bytes[]"
@@ -35507,13 +36112,13 @@
                 },
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@@ -35521,10 +36126,10 @@
                     "typeString": "bytes32"
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                     "name": "bytes32",
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                       "typeString": "bytes32"
@@ -35534,13 +36139,13 @@
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@@ -35548,10 +36153,10 @@
                     "typeString": "bytes32"
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@@ -35560,25 +36165,25 @@
                   "visibility": "internal"
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@@ -35586,12 +36191,12 @@
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@@ -35605,18 +36210,18 @@
                               "typeString": "bytes32"
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                           "typeString": "literal_string \"BEMultiSigWallet: operation is not ready\""
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                           "typeString": "literal_string \"BEMultiSigWallet: operation not reach required confirmations\""
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@@ -35867,26 +36472,26 @@
                                   "typeString": "int_const 0"
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@@ -35931,18 +36536,18 @@
                                 "typeString": "bytes32"
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               "text": " @dev Checks before execution of an operation's calls."
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             },
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+              "id": 2300,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "10771:0:9"
+              "src": "11057:0:9"
             },
-            "scope": 2391,
-            "src": "10704:393:9",
+            "scope": 2424,
+            "src": "10990:393:9",
             "stateMutability": "view",
             "virtual": false,
             "visibility": "private"
           },
           {
             "body": {
-              "id": 2316,
+              "id": 2349,
               "nodeType": "Block",
-              "src": "11211:123:9",
+              "src": "11497:123:9",
               "statements": [
                 {
                   "expression": {
@@ -36124,12 +36729,12 @@
                       {
                         "arguments": [
                           {
-                            "id": 2305,
+                            "id": 2338,
                             "name": "id",
                             "nodeType": "Identifier",
                             "overloadedDeclarations": [],
-                            "referencedDeclaration": 2300,
-                            "src": "11242:2:9",
+                            "referencedDeclaration": 2333,
+                            "src": "11528:2:9",
                             "typeDescriptions": {
                               "typeIdentifier": "t_bytes32",
                               "typeString": "bytes32"
@@ -36143,18 +36748,18 @@
                               "typeString": "bytes32"
                             }
                           ],
-                          "id": 2304,
+                          "id": 2337,
                           "name": "isOperationReady",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 1730,
-                          "src": "11225:16:9",
+                          "referencedDeclaration": 1763,
+                          "src": "11511:16:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_function_internal_view$_t_bytes32_$returns$_t_bool_$",
                             "typeString": "function (bytes32) view returns (bool)"
                           }
                         },
-                        "id": 2306,
+                        "id": 2339,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
@@ -36162,7 +36767,7 @@
                         "lValueRequested": false,
                         "names": [],
                         "nodeType": "FunctionCall",
-                        "src": "11225:20:9",
+                        "src": "11511:20:9",
                         "tryCall": false,
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
@@ -36171,14 +36776,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a206f7065726174696f6e206973206e6f74207265616479",
-                        "id": 2307,
+                        "id": 2340,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "11247:42:9",
+                        "src": "11533:42:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_3071306add2bfff75b9ab79068a1537f4356af9ed062959388101e0b120a034f",
                           "typeString": "literal_string \"BEMultiSigWallet: operation is not ready\""
@@ -36197,7 +36802,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: operation is not ready\""
                         }
                       ],
-                      "id": 2303,
+                      "id": 2336,
                       "name": "require",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [
@@ -36205,13 +36810,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "11217:7:9",
+                      "src": "11503:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
-                    "id": 2308,
+                    "id": 2341,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -36219,45 +36824,45 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "11217:73:9",
+                    "src": "11503:73:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2309,
+                  "id": 2342,
                   "nodeType": "ExpressionStatement",
-                  "src": "11217:73:9"
+                  "src": "11503:73:9"
                 },
                 {
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-                    "id": 2314,
+                    "id": 2347,
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                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftHandSide": {
                       "baseExpression": {
-                        "id": 2310,
+                        "id": 2343,
                         "name": "_timestamps",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1422,
-                        "src": "11296:11:9",
+                        "referencedDeclaration": 1427,
+                        "src": "11582:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_mapping$_t_bytes32_$_t_uint256_$",
                           "typeString": "mapping(bytes32 => uint256)"
                         }
                       },
-                      "id": 2312,
+                      "id": 2345,
                       "indexExpression": {
-                        "id": 2311,
+                        "id": 2344,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2300,
-                        "src": "11308:2:9",
+                        "referencedDeclaration": 2333,
+                        "src": "11594:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
@@ -36268,7 +36873,7 @@
                       "isPure": false,
                       "lValueRequested": true,
                       "nodeType": "IndexAccess",
-                      "src": "11296:15:9",
+                      "src": "11582:15:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -36277,55 +36882,55 @@
                     "nodeType": "Assignment",
                     "operator": "=",
                     "rightHandSide": {
-                      "id": 2313,
+                      "id": 2346,
                       "name": "_DONE_TIMESTAMP",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1418,
-                      "src": "11314:15:9",
+                      "referencedDeclaration": 1423,
+                      "src": "11600:15:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "11296:33:9",
+                    "src": "11582:33:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
-                  "id": 2315,
+                  "id": 2348,
                   "nodeType": "ExpressionStatement",
-                  "src": "11296:33:9"
+                  "src": "11582:33:9"
                 }
               ]
             },
             "documentation": {
-              "id": 2298,
+              "id": 2331,
               "nodeType": "StructuredDocumentation",
-              "src": "11101:67:9",
+              "src": "11387:67:9",
               "text": " @dev Checks after execution of an operation's calls."
             },
-            "id": 2317,
+            "id": 2350,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "_afterCall",
-            "nameLocation": "11180:10:9",
+            "nameLocation": "11466:10:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 2301,
+              "id": 2334,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 2300,
+                  "id": 2333,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "11199:2:9",
+                  "nameLocation": "11485:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2317,
-                  "src": "11191:10:9",
+                  "scope": 2350,
+                  "src": "11477:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -36333,10 +36938,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 2299,
+                    "id": 2332,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "11191:7:9",
+                    "src": "11477:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -36345,41 +36950,41 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "11190:12:9"
+              "src": "11476:12:9"
             },
             "returnParameters": {
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+              "id": 2335,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "11211:0:9"
+              "src": "11497:0:9"
             },
-            "scope": 2391,
-            "src": "11171:163:9",
+            "scope": 2424,
+            "src": "11457:163:9",
             "stateMutability": "nonpayable",
             "virtual": false,
             "visibility": "private"
           },
           {
             "body": {
-              "id": 2353,
+              "id": 2386,
               "nodeType": "Block",
-              "src": "11555:192:9",
+              "src": "11841:192:9",
               "statements": [
                 {
                   "assignments": [
-                    2332,
+                    2365,
                     null
                   ],
                   "declarations": [
                     {
                       "constant": false,
-                      "id": 2332,
+                      "id": 2365,
                       "mutability": "mutable",
                       "name": "success",
-                      "nameLocation": "11567:7:9",
+                      "nameLocation": "11853:7:9",
                       "nodeType": "VariableDeclaration",
-                      "scope": 2353,
-                      "src": "11562:12:9",
+                      "scope": 2386,
+                      "src": "11848:12:9",
                       "stateVariable": false,
                       "storageLocation": "default",
                       "typeDescriptions": {
@@ -36387,10 +36992,10 @@
                         "typeString": "bool"
                       },
                       "typeName": {
-                        "id": 2331,
+                        "id": 2364,
                         "name": "bool",
                         "nodeType": "ElementaryTypeName",
-                        "src": "11562:4:9",
+                        "src": "11848:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -36400,16 +37005,16 @@
                     },
                     null
                   ],
-                  "id": 2339,
+                  "id": 2372,
                   "initialValue": {
                     "arguments": [
                       {
-                        "id": 2337,
+                        "id": 2370,
                         "name": "data",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2328,
-                        "src": "11606:4:9",
+                        "referencedDeclaration": 2361,
+                        "src": "11892:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes_calldata_ptr",
                           "typeString": "bytes calldata"
@@ -36431,31 +37036,31 @@
                           }
                         ],
                         "expression": {
-                          "id": 2333,
+                          "id": 2366,
                           "name": "target",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 2324,
-                          "src": "11580:6:9",
+                          "referencedDeclaration": 2357,
+                          "src": "11866:6:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_address",
                             "typeString": "address"
                           }
                         },
-                        "id": 2334,
+                        "id": 2367,
                         "isConstant": false,
                         "isLValue": false,
                         "isPure": false,
                         "lValueRequested": false,
                         "memberName": "call",
                         "nodeType": "MemberAccess",
-                        "src": "11580:11:9",
+                        "src": "11866:11:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$",
                           "typeString": "function (bytes memory) payable returns (bool,bytes memory)"
                         }
                       },
-                      "id": 2336,
+                      "id": 2369,
                       "isConstant": false,
                       "isLValue": false,
                       "isPure": false,
@@ -36466,25 +37071,25 @@
                       "nodeType": "FunctionCallOptions",
                       "options": [
                         {
-                          "id": 2335,
+                          "id": 2368,
                           "name": "value",
                           "nodeType": "Identifier",
                           "overloadedDeclarations": [],
-                          "referencedDeclaration": 2326,
-                          "src": "11599:5:9",
+                          "referencedDeclaration": 2359,
+                          "src": "11885:5:9",
                           "typeDescriptions": {
                             "typeIdentifier": "t_uint256",
                             "typeString": "uint256"
                           }
                         }
                       ],
-                      "src": "11580:25:9",
+                      "src": "11866:25:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$value",
                         "typeString": "function (bytes memory) payable returns (bool,bytes memory)"
                       }
                     },
-                    "id": 2338,
+                    "id": 2371,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -36492,7 +37097,7 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "11580:31:9",
+                    "src": "11866:31:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$",
@@ -36500,18 +37105,18 @@
                     }
                   },
                   "nodeType": "VariableDeclarationStatement",
-                  "src": "11561:50:9"
+                  "src": "11847:50:9"
                 },
                 {
                   "expression": {
                     "arguments": [
                       {
-                        "id": 2341,
+                        "id": 2374,
                         "name": "success",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2332,
-                        "src": "11625:7:9",
+                        "referencedDeclaration": 2365,
+                        "src": "11911:7:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bool",
                           "typeString": "bool"
@@ -36519,14 +37124,14 @@
                       },
                       {
                         "hexValue": "42454d756c746953696757616c6c65743a20756e6465726c79696e67207472616e73616374696f6e207265766572746564",
-                        "id": 2342,
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                         "isConstant": false,
                         "isLValue": false,
                         "isPure": true,
                         "kind": "string",
                         "lValueRequested": false,
                         "nodeType": "Literal",
-                        "src": "11634:51:9",
+                        "src": "11920:51:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_stringliteral_4887496109bd7042bc943a0ba0978efb71ff89756cc68bec9bd24ffa06316a33",
                           "typeString": "literal_string \"BEMultiSigWallet: underlying transaction reverted\""
@@ -36545,7 +37150,7 @@
                           "typeString": "literal_string \"BEMultiSigWallet: underlying transaction reverted\""
                         }
                       ],
-                      "id": 2340,
+                      "id": 2373,
                       "name": "require",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [
@@ -36553,13 +37158,13 @@
                         4294967278
                       ],
                       "referencedDeclaration": 4294967278,
-                      "src": "11617:7:9",
+                      "src": "11903:7:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$",
                         "typeString": "function (bool,string memory) pure"
                       }
                     },
-                    "id": 2343,
+                    "id": 2376,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -36567,75 +37172,75 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "11617:69:9",
+                    "src": "11903:69:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2344,
+                  "id": 2377,
                   "nodeType": "ExpressionStatement",
-                  "src": "11617:69:9"
+                  "src": "11903:69:9"
                 },
                 {
                   "eventCall": {
                     "arguments": [
                       {
-                        "id": 2346,
+                        "id": 2379,
                         "name": "id",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2320,
-                        "src": "11711:2:9",
+                        "referencedDeclaration": 2353,
+                        "src": "11997:2:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes32",
                           "typeString": "bytes32"
                         }
                       },
                       {
-                        "id": 2347,
+                        "id": 2380,
                         "name": "index",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2322,
-                        "src": "11715:5:9",
+                        "referencedDeclaration": 2355,
+                        "src": "12001:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
                       {
-                        "id": 2348,
+                        "id": 2381,
                         "name": "target",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2324,
-                        "src": "11722:6:9",
+                        "referencedDeclaration": 2357,
+                        "src": "12008:6:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_address",
                           "typeString": "address"
                         }
                       },
                       {
-                        "id": 2349,
+                        "id": 2382,
                         "name": "value",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2326,
-                        "src": "11730:5:9",
+                        "referencedDeclaration": 2359,
+                        "src": "12016:5:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
                       {
-                        "id": 2350,
+                        "id": 2383,
                         "name": "data",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2328,
-                        "src": "11737:4:9",
+                        "referencedDeclaration": 2361,
+                        "src": "12023:4:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_bytes_calldata_ptr",
                           "typeString": "bytes calldata"
@@ -36665,18 +37270,18 @@
                           "typeString": "bytes calldata"
                         }
                       ],
-                      "id": 2345,
+                      "id": 2378,
                       "name": "CallExecuted",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1462,
-                      "src": "11698:12:9",
+                      "referencedDeclaration": 1467,
+                      "src": "11984:12:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_bytes32_$_t_uint256_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$",
                         "typeString": "function (bytes32,uint256,address,uint256,bytes memory)"
                       }
                     },
-                    "id": 2351,
+                    "id": 2384,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -36684,45 +37289,45 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "11698:44:9",
+                    "src": "11984:44:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2352,
+                  "id": 2385,
                   "nodeType": "EmitStatement",
-                  "src": "11693:49:9"
+                  "src": "11979:49:9"
                 }
               ]
             },
             "documentation": {
-              "id": 2318,
+              "id": 2351,
               "nodeType": "StructuredDocumentation",
-              "src": "11338:88:9",
+              "src": "11624:88:9",
               "text": " @dev Execute an operation's call.\n Emits a {CallExecuted} event."
             },
-            "id": 2354,
+            "id": 2387,
             "implemented": true,
             "kind": "function",
             "modifiers": [],
             "name": "_call",
-            "nameLocation": "11438:5:9",
+            "nameLocation": "11724:5:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 2329,
+              "id": 2362,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 2320,
+                  "id": 2353,
                   "mutability": "mutable",
                   "name": "id",
-                  "nameLocation": "11457:2:9",
+                  "nameLocation": "11743:2:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2354,
-                  "src": "11449:10:9",
+                  "scope": 2387,
+                  "src": "11735:10:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -36730,10 +37335,10 @@
                     "typeString": "bytes32"
                   },
                   "typeName": {
-                    "id": 2319,
+                    "id": 2352,
                     "name": "bytes32",
                     "nodeType": "ElementaryTypeName",
-                    "src": "11449:7:9",
+                    "src": "11735:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes32",
                       "typeString": "bytes32"
@@ -36743,13 +37348,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 2322,
+                  "id": 2355,
                   "mutability": "mutable",
                   "name": "index",
-                  "nameLocation": "11473:5:9",
+                  "nameLocation": "11759:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2354,
-                  "src": "11465:13:9",
+                  "scope": 2387,
+                  "src": "11751:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -36757,10 +37362,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 2321,
+                    "id": 2354,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "11465:7:9",
+                    "src": "11751:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -36770,13 +37375,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 2324,
+                  "id": 2357,
                   "mutability": "mutable",
                   "name": "target",
-                  "nameLocation": "11492:6:9",
+                  "nameLocation": "11778:6:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2354,
-                  "src": "11484:14:9",
+                  "scope": 2387,
+                  "src": "11770:14:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -36784,10 +37389,10 @@
                     "typeString": "address"
                   },
                   "typeName": {
-                    "id": 2323,
+                    "id": 2356,
                     "name": "address",
                     "nodeType": "ElementaryTypeName",
-                    "src": "11484:7:9",
+                    "src": "11770:7:9",
                     "stateMutability": "nonpayable",
                     "typeDescriptions": {
                       "typeIdentifier": "t_address",
@@ -36798,13 +37403,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 2326,
+                  "id": 2359,
                   "mutability": "mutable",
                   "name": "value",
-                  "nameLocation": "11512:5:9",
+                  "nameLocation": "11798:5:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2354,
-                  "src": "11504:13:9",
+                  "scope": 2387,
+                  "src": "11790:13:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -36812,10 +37417,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 2325,
+                    "id": 2358,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "11504:7:9",
+                    "src": "11790:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -36825,13 +37430,13 @@
                 },
                 {
                   "constant": false,
-                  "id": 2328,
+                  "id": 2361,
                   "mutability": "mutable",
                   "name": "data",
-                  "nameLocation": "11538:4:9",
+                  "nameLocation": "11824:4:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2354,
-                  "src": "11523:19:9",
+                  "scope": 2387,
+                  "src": "11809:19:9",
                   "stateVariable": false,
                   "storageLocation": "calldata",
                   "typeDescriptions": {
@@ -36839,10 +37444,10 @@
                     "typeString": "bytes"
                   },
                   "typeName": {
-                    "id": 2327,
+                    "id": 2360,
                     "name": "bytes",
                     "nodeType": "ElementaryTypeName",
-                    "src": "11523:5:9",
+                    "src": "11809:5:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_bytes_storage_ptr",
                       "typeString": "bytes"
@@ -36851,48 +37456,48 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "11443:103:9"
+              "src": "11729:103:9"
             },
             "returnParameters": {
-              "id": 2330,
+              "id": 2363,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "11555:0:9"
+              "src": "11841:0:9"
             },
-            "scope": 2391,
-            "src": "11429:318:9",
+            "scope": 2424,
+            "src": "11715:318:9",
             "stateMutability": "nonpayable",
             "virtual": false,
             "visibility": "private"
           },
           {
             "body": {
-              "id": 2371,
+              "id": 2404,
               "nodeType": "Block",
-              "src": "12180:77:9",
+              "src": "12466:77:9",
               "statements": [
                 {
                   "eventCall": {
                     "arguments": [
                       {
-                        "id": 2363,
+                        "id": 2396,
                         "name": "minDelay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1430,
-                        "src": "12206:8:9",
+                        "referencedDeclaration": 1435,
+                        "src": "12492:8:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
                       {
-                        "id": 2364,
+                        "id": 2397,
                         "name": "_minDelay",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2357,
-                        "src": "12216:9:9",
+                        "referencedDeclaration": 2390,
+                        "src": "12502:9:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -36910,18 +37515,18 @@
                           "typeString": "uint256"
                         }
                       ],
-                      "id": 2362,
+                      "id": 2395,
                       "name": "MinDelayChange",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1486,
-                      "src": "12191:14:9",
+                      "referencedDeclaration": 1491,
+                      "src": "12477:14:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_uint256_$_t_uint256_$returns$__$",
                         "typeString": "function (uint256,uint256)"
                       }
                     },
-                    "id": 2365,
+                    "id": 2398,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -36929,31 +37534,31 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "12191:35:9",
+                    "src": "12477:35:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2366,
+                  "id": 2399,
                   "nodeType": "EmitStatement",
-                  "src": "12186:40:9"
+                  "src": "12472:40:9"
                 },
                 {
                   "expression": {
-                    "id": 2369,
+                    "id": 2402,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftHandSide": {
-                      "id": 2367,
+                      "id": 2400,
                       "name": "minDelay",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1430,
-                      "src": "12232:8:9",
+                      "referencedDeclaration": 1435,
+                      "src": "12518:8:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -36962,70 +37567,70 @@
                     "nodeType": "Assignment",
                     "operator": "=",
                     "rightHandSide": {
-                      "id": 2368,
+                      "id": 2401,
                       "name": "_minDelay",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2357,
-                      "src": "12243:9:9",
+                      "referencedDeclaration": 2390,
+                      "src": "12529:9:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "12232:20:9",
+                    "src": "12518:20:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
-                  "id": 2370,
+                  "id": 2403,
                   "nodeType": "ExpressionStatement",
-                  "src": "12232:20:9"
+                  "src": "12518:20:9"
                 }
               ]
             },
             "documentation": {
-              "id": 2355,
+              "id": 2388,
               "nodeType": "StructuredDocumentation",
-              "src": "11751:358:9",
+              "src": "12037:358:9",
               "text": " @dev Changes the minimum wallet duration for future operations.\n Emits a {MinDelayChange} event.\n Requirements:\n - the caller must be the wallet itself. This can only be achieved by scheduling and later executing\n an operation where the wallet is the target and the data is the ABI-encoded call to this function."
             },
             "functionSelector": "5037ec62",
-            "id": 2372,
+            "id": 2405,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
-                "id": 2360,
+                "id": 2393,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 2359,
+                  "id": 2392,
                   "name": "onlyWallet",
                   "nodeType": "IdentifierPath",
-                  "referencedDeclaration": 1508,
-                  "src": "12169:10:9"
+                  "referencedDeclaration": 1513,
+                  "src": "12455:10:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "12169:10:9"
+                "src": "12455:10:9"
               }
             ],
             "name": "changeDelay",
-            "nameLocation": "12121:11:9",
+            "nameLocation": "12407:11:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 2358,
+              "id": 2391,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 2357,
+                  "id": 2390,
                   "mutability": "mutable",
                   "name": "_minDelay",
-                  "nameLocation": "12141:9:9",
+                  "nameLocation": "12427:9:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2372,
-                  "src": "12133:17:9",
+                  "scope": 2405,
+                  "src": "12419:17:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -37033,10 +37638,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 2356,
+                    "id": 2389,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "12133:7:9",
+                    "src": "12419:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -37045,48 +37650,48 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "12132:19:9"
+              "src": "12418:19:9"
             },
             "returnParameters": {
-              "id": 2361,
+              "id": 2394,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "12180:0:9"
+              "src": "12466:0:9"
             },
-            "scope": 2391,
-            "src": "12112:145:9",
+            "scope": 2424,
+            "src": "12398:145:9",
             "stateMutability": "nonpayable",
             "virtual": true,
             "visibility": "external"
           },
           {
             "body": {
-              "id": 2389,
+              "id": 2422,
               "nodeType": "Block",
-              "src": "12506:80:9",
+              "src": "12792:80:9",
               "statements": [
                 {
                   "eventCall": {
                     "arguments": [
                       {
-                        "id": 2381,
+                        "id": 2414,
                         "name": "required",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 1432,
-                        "src": "12535:8:9",
+                        "referencedDeclaration": 1437,
+                        "src": "12821:8:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
                         }
                       },
                       {
-                        "id": 2382,
+                        "id": 2415,
                         "name": "_required",
                         "nodeType": "Identifier",
                         "overloadedDeclarations": [],
-                        "referencedDeclaration": 2375,
-                        "src": "12545:9:9",
+                        "referencedDeclaration": 2408,
+                        "src": "12831:9:9",
                         "typeDescriptions": {
                           "typeIdentifier": "t_uint256",
                           "typeString": "uint256"
@@ -37104,18 +37709,18 @@
                           "typeString": "uint256"
                         }
                       ],
-                      "id": 2380,
+                      "id": 2413,
                       "name": "RequirementChange",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1493,
-                      "src": "12517:17:9",
+                      "referencedDeclaration": 1498,
+                      "src": "12803:17:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_function_event_nonpayable$_t_uint256_$_t_uint256_$returns$__$",
                         "typeString": "function (uint256,uint256)"
                       }
                     },
-                    "id": 2383,
+                    "id": 2416,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
@@ -37123,31 +37728,31 @@
                     "lValueRequested": false,
                     "names": [],
                     "nodeType": "FunctionCall",
-                    "src": "12517:38:9",
+                    "src": "12803:38:9",
                     "tryCall": false,
                     "typeDescriptions": {
                       "typeIdentifier": "t_tuple$__$",
                       "typeString": "tuple()"
                     }
                   },
-                  "id": 2384,
+                  "id": 2417,
                   "nodeType": "EmitStatement",
-                  "src": "12512:43:9"
+                  "src": "12798:43:9"
                 },
                 {
                   "expression": {
-                    "id": 2387,
+                    "id": 2420,
                     "isConstant": false,
                     "isLValue": false,
                     "isPure": false,
                     "lValueRequested": false,
                     "leftHandSide": {
-                      "id": 2385,
+                      "id": 2418,
                       "name": "required",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 1432,
-                      "src": "12561:8:9",
+                      "referencedDeclaration": 1437,
+                      "src": "12847:8:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
@@ -37156,70 +37761,70 @@
                     "nodeType": "Assignment",
                     "operator": "=",
                     "rightHandSide": {
-                      "id": 2386,
+                      "id": 2419,
                       "name": "_required",
                       "nodeType": "Identifier",
                       "overloadedDeclarations": [],
-                      "referencedDeclaration": 2375,
-                      "src": "12572:9:9",
+                      "referencedDeclaration": 2408,
+                      "src": "12858:9:9",
                       "typeDescriptions": {
                         "typeIdentifier": "t_uint256",
                         "typeString": "uint256"
                       }
                     },
-                    "src": "12561:20:9",
+                    "src": "12847:20:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
                     }
                   },
-                  "id": 2388,
+                  "id": 2421,
                   "nodeType": "ExpressionStatement",
-                  "src": "12561:20:9"
+                  "src": "12847:20:9"
                 }
               ]
             },
             "documentation": {
-              "id": 2373,
+              "id": 2406,
               "nodeType": "StructuredDocumentation",
-              "src": "12261:168:9",
+              "src": "12547:168:9",
               "text": " @dev Allows to change the number of required confirmations. Transaction has to be sent by wallet.\n @param _required Number of required confirmations."
             },
             "functionSelector": "ba51a6df",
-            "id": 2390,
+            "id": 2423,
             "implemented": true,
             "kind": "function",
             "modifiers": [
               {
-                "id": 2378,
+                "id": 2411,
                 "kind": "modifierInvocation",
                 "modifierName": {
-                  "id": 2377,
+                  "id": 2410,
                   "name": "onlyWallet",
                   "nodeType": "IdentifierPath",
-                  "referencedDeclaration": 1508,
-                  "src": "12495:10:9"
+                  "referencedDeclaration": 1513,
+                  "src": "12781:10:9"
                 },
                 "nodeType": "ModifierInvocation",
-                "src": "12495:10:9"
+                "src": "12781:10:9"
               }
             ],
             "name": "changeRequirement",
-            "nameLocation": "12441:17:9",
+            "nameLocation": "12727:17:9",
             "nodeType": "FunctionDefinition",
             "parameters": {
-              "id": 2376,
+              "id": 2409,
               "nodeType": "ParameterList",
               "parameters": [
                 {
                   "constant": false,
-                  "id": 2375,
+                  "id": 2408,
                   "mutability": "mutable",
                   "name": "_required",
-                  "nameLocation": "12467:9:9",
+                  "nameLocation": "12753:9:9",
                   "nodeType": "VariableDeclaration",
-                  "scope": 2390,
-                  "src": "12459:17:9",
+                  "scope": 2423,
+                  "src": "12745:17:9",
                   "stateVariable": false,
                   "storageLocation": "default",
                   "typeDescriptions": {
@@ -37227,10 +37832,10 @@
                     "typeString": "uint256"
                   },
                   "typeName": {
-                    "id": 2374,
+                    "id": 2407,
                     "name": "uint256",
                     "nodeType": "ElementaryTypeName",
-                    "src": "12459:7:9",
+                    "src": "12745:7:9",
                     "typeDescriptions": {
                       "typeIdentifier": "t_uint256",
                       "typeString": "uint256"
@@ -37239,27 +37844,27 @@
                   "visibility": "internal"
                 }
               ],
-              "src": "12458:19:9"
+              "src": "12744:19:9"
             },
             "returnParameters": {
-              "id": 2379,
+              "id": 2412,
               "nodeType": "ParameterList",
               "parameters": [],
-              "src": "12506:0:9"
+              "src": "12792:0:9"
             },
-            "scope": 2391,
-            "src": "12432:154:9",
+            "scope": 2424,
+            "src": "12718:154:9",
             "stateMutability": "nonpayable",
             "virtual": true,
             "visibility": "external"
           }
         ],
-        "scope": 2392,
-        "src": "168:12420:9",
+        "scope": 2425,
+        "src": "168:12706:9",
         "usedErrors": []
       }
     ],
-    "src": "32:12557:9"
+    "src": "32:12843:9"
   },
   "compiler": {
     "name": "solc",
@@ -37520,12 +38125,12 @@
         }
       },
       "links": {},
-      "address": "0xc195196351566d2c4e13563C4492fB0BdB7894Fb",
-      "transactionHash": "0x6dc2474e9d4e35d9fbf82473806c1ffeffce560fdb7cd621e2035bf4b0741c90"
+      "address": "0xE7619121c60711101f3207F03ab39e8a8a960082",
+      "transactionHash": "0x00f29b0c5fd10b7c6516493e3283ff1309fcfedfdd46ffeb0032630c15151524"
     }
   },
   "schemaVersion": "3.4.11",
-  "updatedAt": "2023-04-08T07:17:12.129Z",
+  "updatedAt": "2023-04-10T11:33:47.937Z",
   "networkType": "ethereum",
   "devdoc": {
     "events": {
diff --git a/src/config/events.json b/src/config/events.json
index e72f5dd..8e4e603 100644
--- a/src/config/events.json
+++ b/src/config/events.json
@@ -1,9 +1,9 @@
 [
   {
-    "address": "",
-    "event": "Transfer",
-    "abi": "ERC721",
+    "address": "0xc195196351566d2c4e13563C4492fB0BdB7894Fb",
+    "event": "Confirmation",
+    "abi": "BEMultiSigWallet",
     "fromBlock": 0,
-    "eventProcesser": "NftTransferEvent"
+    "eventProcesser": "ScheduleConfirmEvent"
   }
 ]
diff --git a/src/models/RequestTask.ts b/src/models/RequestTask.ts
index 267c3a3..10fda84 100644
--- a/src/models/RequestTask.ts
+++ b/src/models/RequestTask.ts
@@ -1,4 +1,4 @@
-import { getModelForClass, DocumentType, modelOptions, mongoose, prop, Severity } from '@typegoose/typegoose'
+import { getModelForClass, DocumentType, modelOptions, mongoose, prop, Severity, index } from '@typegoose/typegoose'
 import { BlockChain } from 'chain/BlockChain'
 import { dbconn } from 'decorators/dbconn'
 import logger from 'logger/logger'
@@ -24,6 +24,7 @@ export enum ReqTaskStatus {
 }
 
 @dbconn()
+@index({ scheduleId: 1 }, { unique: false })
 @modelOptions({
   schemaOptions: { collection: 'chain_request_task', timestamps: true },
   options: { allowMixed: Severity.ALLOW },
@@ -44,8 +45,8 @@ export class RequestTaskClass extends BaseModule {
   @prop({ required: true, default: 0 })
   public maxTryCount: number
 
-  @prop({ type: mongoose.Schema.Types.Mixed })
-  public reqDatas: any
+  @prop({ type: mongoose.Schema.Types.Mixed, default: [] })
+  public reqDatas: any[]
 
   @prop({ enum: ReqTaskStatus, default: ReqTaskStatus.NOTSTART })
   public status: ReqTaskStatus
diff --git a/src/models/ScheduleConfirmEvent.ts b/src/models/ScheduleConfirmEvent.ts
new file mode 100644
index 0000000..b03e9a8
--- /dev/null
+++ b/src/models/ScheduleConfirmEvent.ts
@@ -0,0 +1,55 @@
+import { getModelForClass, index, modelOptions, prop } from '@typegoose/typegoose'
+import { dbconn } from 'decorators/dbconn'
+import { BaseModule } from './Base'
+
+@dbconn()
+@index({ tokenId: 1 }, { unique: false })
+@index({ transactionHash: 1, tokenId: 1, from: 1, to: 1 }, { unique: true })
+@modelOptions({
+  schemaOptions: { collection: 'schedule_confirm_event', timestamps: true },
+})
+export class ScheduleConfirmEventClass extends BaseModule {
+  @prop({ required: true })
+  public address!: string
+  @prop()
+  public event: string
+  @prop({ required: true })
+  public transactionHash: string
+  @prop()
+  public blockNumber: number
+  @prop()
+  public blockHash: string
+  @prop()
+  public removed: boolean
+  @prop()
+  public operater: string
+  @prop()
+  public scheduleId: string
+  @prop()
+  public blockTime: number
+  @prop({ default: 0 })
+  public version: number
+
+  public static async saveEvent(event: any) {
+    if (!event.success) {
+      return
+    }
+
+    const data = {
+      address: event.tokenAddress,
+      blockNumber: event.blockHeight,
+      removed: event.removed,
+      operater: event.sender,
+      scheduleId: event.id,
+      transactionHash: event.hash,
+      blockTime: new Date(event.time).getTime(),
+      $inc: { version: 1 },
+    }
+
+    return ScheduleConfirmEvent.insertOrUpdate({ transactionHash: event.hash }, data)
+  }
+}
+
+export const ScheduleConfirmEvent = getModelForClass(ScheduleConfirmEventClass, {
+  existingConnection: ScheduleConfirmEventClass['db'],
+})
diff --git a/src/monitor.ts b/src/monitor.ts
index c95860f..a0b3b6f 100644
--- a/src/monitor.ts
+++ b/src/monitor.ts
@@ -6,6 +6,7 @@ dotenv.config({ path: envFile })
 import { EventSyncSvr } from 'service/event.sync.service'
 import { NftTransferEvent } from 'models/NftTransferEvent'
 import { FtTransferEvent } from 'models/FtTransferEvent'
+import { ScheduleConfirmEvent } from 'models/ScheduleConfirmEvent'
 
 import 'common/Extend'
 
@@ -15,11 +16,12 @@ let lock = false
 let eventProcessers = {
   NftTransferEvent: NftTransferEvent,
   FtTransferEvent: FtTransferEvent,
+  ScheduleConfirmEvent: ScheduleConfirmEvent,
 }
 
 const events = require('config/events.json')
 
-async function initNftSvrs() {
+async function initEventSvrs() {
   // let nfts = [{ address: '0x37c30a2945799a53c5358636a721b442458fa691' }]
   for (let event of events) {
     let eventSvr = new EventSyncSvr({
@@ -33,7 +35,7 @@ async function initNftSvrs() {
   }
 }
 
-async function parseNfts() {
+async function parseAllEvents() {
   if (lock) {
     logger.info('sync in process, cancel.')
     return
@@ -55,12 +57,11 @@ async function main() {
   let opts = { url: process.env.REDIS }
   new RedisClient(opts)
   logger.info('REDIS Connected')
-  await initNftSvrs()
-  logger.info('nft servers inited')
+  await initEventSvrs()
   setInterval(function () {
-    parseNfts()
+    parseAllEvents()
   }, 60000)
-  parseNfts()
+  parseAllEvents()
 }
 
 main()