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@@ -37,40 +37,44 @@ methods {
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*/
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-
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///////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////// Global Valid States /////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////
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- // not complete
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- /*
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- * If any of the properties are non zero, the rest has to be non zero
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- */
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- // start !0 !0 !0
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- // end = !0 !0 !0
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- // exe = 0 0 1 1
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- // can = 0 1 0 1
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- invariant proposalInitiated(uint256 pId)
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- (proposalSnapshot(pId) != 0 <=> proposalDeadline(pId) != 0) &&
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- (isCanceled(pId) => proposalSnapshot(pId) != 0) &&
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- (isExecuted(pId) => proposalSnapshot(pId) != 0)
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-
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- // pass
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- /*
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- * A proposal cannot end unless it started.
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- */
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- invariant voteStartBeforeVoteEnd(uint256 pId)
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- (proposalSnapshot(pId) > 0 => proposalSnapshot(pId) < proposalDeadline(pId))
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- && (proposalSnapshot(pId) == 0 => proposalDeadline(pId) == 0)
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-
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-
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- // pass
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- /*
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- * A proposal cannot be both executed and canceled.
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- */
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- invariant noBothExecutedAndCanceled(uint256 pId)
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- !isExecuted(pId) || !isCanceled(pId)
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+/*
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+ * If any of the properties are non zero, the rest has to be non zero
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+ */
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+ // start !0 !0 !0
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+ // end = !0 !0 !0
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+ // exe = 0 0 1 1
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+ // can = 0 1 0 1
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+invariant proposalInitiated(uint256 pId)
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+ (proposalSnapshot(pId) != 0 <=> proposalDeadline(pId) != 0) &&
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+ (isCanceled(pId) => proposalSnapshot(pId) != 0) &&
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+ (isExecuted(pId) => proposalSnapshot(pId) != 0)
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+
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+
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+/*
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+ * A proposal cannot end unless it started.
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+ */
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+invariant voteStartBeforeVoteEnd(uint256 pId)
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+ (proposalSnapshot(pId) > 0 => proposalSnapshot(pId) < proposalDeadline(pId))
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+ && (proposalSnapshot(pId) == 0 => proposalDeadline(pId) == 0)
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+
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+
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+/*
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+ * A proposal cannot be both executed and canceled.
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+ */
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+invariant noBothExecutedAndCanceled(uint256 pId)
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+ !isExecuted(pId) || !isCanceled(pId)
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+
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+
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+/**
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+ * A proposal could be executed only if quorum was reached and vote succeeded
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+ */
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+invariant executionOnlyIfQuoromReachedAndVoteSucceeded(uint256 pId)
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+ isExecuted(pId) => _quorumReached(pId) && _voteSucceeded(pId)
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///////////////////////////////////////////////////////////////////////////////////////
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@@ -81,22 +85,20 @@ methods {
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//------------- Voting Period --------------
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//==========================================
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- // pass
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- /*
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- * A user cannot vote twice
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- */
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- rule doubleVoting(uint256 pId, uint8 sup) {
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- env e;
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- address user = e.msg.sender;
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- bool votedCheck = hasVoted(e, pId, user);
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- require votedCheck == true;
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+/*
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+ * A user cannot vote twice
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+ */
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+rule doubleVoting(uint256 pId, uint8 sup) {
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+ env e;
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+ address user = e.msg.sender;
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+ bool votedCheck = hasVoted(e, pId, user);
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- castVote@withrevert(e, pId, sup);
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- bool reverted = lastReverted;
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+ castVote@withrevert(e, pId, sup);
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+ bool reverted = lastReverted;
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- assert votedCheck => reverted, "double voting accured";
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- }
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+ assert votedCheck => reverted, "double voting accured";
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+}
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///////////////////////////////////////////////////////////////////////////////////////
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@@ -107,76 +109,75 @@ methods {
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//-------- Propose() --> End of Time --------
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//===========================================
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- // pass
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- /*
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- * The voting must start not before the proposal’s creation time
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- */
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- rule noStartBeforeCreation(uint256 pId) {
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- uint256 previousStart = proposalSnapshot(pId);
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- require previousStart == 0;
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- env e;
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- calldataarg arg;
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- propose(e, arg);
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-
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- uint newStart = proposalSnapshot(pId);
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- // if created, start is after current block number (creation block)
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- assert(newStart != previousStart => newStart >= e.block.number);
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- }
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-
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-
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- // pass
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- /*
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- * Once a proposal is created, voteStart and voteEnd are immutable
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- */
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- rule immutableFieldsAfterProposalCreation(uint256 pId, method f) {
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- uint _voteStart = proposalSnapshot(pId);
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- uint _voteEnd = proposalDeadline(pId);
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- require _voteStart > 0; // proposal was created - relation proved in noStartBeforeCreation
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-
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- env e;
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- calldataarg arg;
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- f(e, arg);
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-
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- uint voteStart_ = proposalSnapshot(pId);
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- uint voteEnd_ = proposalDeadline(pId);
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- assert _voteStart == voteStart_;
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- assert _voteEnd == voteEnd_;
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- }
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-
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- // pass
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- /*
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- * A proposal cannot be neither executed nor canceled before it starts
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- */
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- rule noExecuteOrCancelBeforeStarting(uint256 pId, method f){
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- env e;
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-
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- require !isExecuted(pId) && !isCanceled(pId);
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-
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- calldataarg arg;
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- f(e, arg);
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-
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- assert e.block.number < proposalSnapshot(pId) => (!isExecuted(pId) && !isCanceled(pId)), "executed/cancelled before start";
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- }
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+
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+/*
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+ * The voting must start not before the proposal’s creation time
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+ */
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+rule noStartBeforeCreation(uint256 pId) {
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+ uint256 previousStart = proposalSnapshot(pId);
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+ require previousStart == 0;
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+ env e;
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+ calldataarg arg;
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+ propose(e, arg);
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+
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+ uint newStart = proposalSnapshot(pId);
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+ // if created, start is after current block number (creation block)
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+ assert(newStart != previousStart => newStart >= e.block.number);
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+}
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+
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+
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+/*
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+ * Once a proposal is created, voteStart and voteEnd are immutable
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+ */
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+rule immutableFieldsAfterProposalCreation(uint256 pId, method f) {
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+ uint _voteStart = proposalSnapshot(pId);
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+ uint _voteEnd = proposalDeadline(pId);
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+ require _voteStart > 0; // proposal was created - relation proved in noStartBeforeCreation
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+
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+ env e;
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+ calldataarg arg;
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+ f(e, arg);
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+
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+ uint voteStart_ = proposalSnapshot(pId);
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+ uint voteEnd_ = proposalDeadline(pId);
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+ assert _voteStart == voteStart_;
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+ assert _voteEnd == voteEnd_;
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+}
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+
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+
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+/*
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+ * A proposal cannot be neither executed nor canceled before it starts
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+ */
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+rule noExecuteOrCancelBeforeStarting(uint256 pId, method f){
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+ env e;
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+
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+ require !isExecuted(pId) && !isCanceled(pId);
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+
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+ calldataarg arg;
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+ f(e, arg);
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+
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+ assert e.block.number < proposalSnapshot(pId) => (!isExecuted(pId) && !isCanceled(pId)), "executed/cancelled before start";
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+}
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//============================================
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//--- End of Voting Period --> End of Time ---
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//============================================
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- // pass
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- /*
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- * A proposal cannot be neither executed nor canceled before proposal's deadline
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- */
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- rule noExecuteOrCancelBeforeDeadline(uint256 pId, method f){
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- env e;
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- requireInvariant voteStartBeforeVoteEnd(pId);
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- require !isExecuted(pId) && !isCanceled(pId);
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+/*
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+ * A proposal cannot be neither executed nor canceled before proposal's deadline
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+ */
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+rule noExecuteOrCancelBeforeDeadline(uint256 pId, method f){
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+ env e;
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+
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+ requireInvariant voteStartBeforeVoteEnd(pId);
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+ require !isExecuted(pId) && !isCanceled(pId);
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- calldataarg arg;
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- f(e, arg);
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+ calldataarg arg;
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+ f(e, arg);
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- assert e.block.number < proposalDeadline(pId) => (!isExecuted(pId) && !isCanceled(pId)), "executed/cancelled before deadline";
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- }
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+ assert e.block.number < proposalDeadline(pId) => (!isExecuted(pId) && !isCanceled(pId)), "executed/cancelled before deadline";
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+}
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////////////////////////////////////////////////////////////////////////////////
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////////////////////// Integrity Of Functions (Unit Tests) /////////////////////
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@@ -210,26 +211,26 @@ rule checkHashProposal {
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//////////////////////////////// High Level Rules //////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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- // not passing
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- /*
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- * all non-view functions should revert if proposal is executed
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- */
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- rule allFunctionsRevertIfExecuted(uint256 pId, method f) filtered { f -> !f.isView } {
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- env e; calldataarg args;
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- require(isExecuted(pId));
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- f@withrevert(e,args);
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- assert(lastReverted == true, "Function was not reverted");
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- }
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-
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- // not passing
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- /*
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- * all non-view functions should revert if proposal is canceled
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- */
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- rule allFunctionsRevertIfCanceled(method f) filtered { f -> !f.isView } {
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- env e; calldataarg args;
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- uint256 pId = e.msg.value;
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- require(isCanceled(pId));
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- requireInvariant noBothExecutedAndCanceled(pId);
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- f@withrevert(e,args);
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- assert(lastReverted == true, "Function was not reverted");
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- }
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+
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+/*
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+ * all non-view functions should revert if proposal is executed
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+ */
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+rule allFunctionsRevertIfExecuted(uint256 pId, method f) filtered { f -> !f.isView } {
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+ env e; calldataarg args;
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+ require(isExecuted(pId));
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+ f@withrevert(e,args);
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+ assert(lastReverted == true, "Function was not reverted");
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+}
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+
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+
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+/*
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+ * all non-view functions should revert if proposal is canceled
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+ */
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+rule allFunctionsRevertIfCanceled(method f) filtered { f -> !f.isView } {
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+ env e; calldataarg args;
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+ uint256 pId = e.msg.value;
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+ require(isCanceled(pId));
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+ requireInvariant noBothExecutedAndCanceled(pId);
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+ f@withrevert(e,args);
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+ assert(lastReverted == true, "Function was not reverted");
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+}
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