fixed function revert if executed

certora/specs/GovernorBase.spec

@@ -62,6 +62,12 @@ invariant cannotSetIfCanceled(uint256 pId)
  */
 invariant cannotSetIfExecuted(uint256 pId)
     isExecuted(pId) => lastReverted == true 
+    {
+        preserved execute(address[] targets, uint256[] values, bytes[] calldatas, bytes32 descriptionHash) with (env e)
+        {
+            require(isExecuted(pId));
+        }
+    }