NewFileForRulesInProgress

certora/specs/RulesInProgress.spec

@@ -0,0 +1,139 @@
+//////////////////////////////////////////////////////////////////////////////
+////////////// THIS SPEC IS A RESERVE FOR NOT IN PROGRESS //////////////
+//////////////////////////////////////////////////////////////////////////////
+
+import "GovernorBase.spec"
+
+using ERC20VotesHarness as erc20votes
+
+methods {
+    ghost_sum_vote_power_by_id(uint256) returns uint256 envfree
+
+    quorum(uint256) returns uint256
+    proposalVotes(uint256) returns (uint256, uint256, uint256) envfree
+
+    quorumNumerator() returns uint256
+    _executor() returns address
+
+    erc20votes._getPastVotes(address, uint256) returns uint256
+
+    getExecutor() returns address
+
+    timelock() returns address
+}
+
+
+//////////////////////////////////////////////////////////////////////////////
+///////////////////////////////// GHOSTS /////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+
+
+//////////// ghosts to keep track of votes counting ////////////
+
+/*
+ * the sum of voting power of those who voted
+ */
+ghost sum_all_votes_power() returns uint256 {
+	init_state axiom sum_all_votes_power() == 0;
+}
+
+hook Sstore ghost_sum_vote_power_by_id [KEY uint256 pId] uint256 current_power(uint256 old_power) STORAGE {
+	havoc sum_all_votes_power assuming sum_all_votes_power@new() == sum_all_votes_power@old() - old_power + current_power;
+}
+
+/*
+ * sum of all votes casted per proposal
+ */
+ghost tracked_weight(uint256) returns uint256 {
+	init_state axiom forall uint256 p. tracked_weight(p) == 0;
+}
+
+/*
+ * sum of all votes casted
+ */
+ghost sum_tracked_weight() returns uint256 {
+	init_state axiom sum_tracked_weight() == 0;
+}
+
+/*
+ * getter for _proposalVotes.againstVotes
+ */
+ghost votesAgainst() returns uint256 {
+    init_state axiom votesAgainst() == 0;
+}
+
+/*
+ * getter for _proposalVotes.forVotes
+ */
+ghost votesFor() returns uint256 {
+    init_state axiom votesFor() == 0;
+}
+
+/*
+ * getter for _proposalVotes.abstainVotes
+ */
+ghost votesAbstain() returns uint256 {
+    init_state axiom votesAbstain() == 0;
+}
+
+hook Sstore _proposalVotes [KEY uint256 pId].againstVotes uint256 votes(uint256 old_votes) STORAGE {
+	havoc tracked_weight assuming forall uint256 p.(p == pId => tracked_weight@new(p) == tracked_weight@old(p) - old_votes + votes) &&
+	                                            (p != pId => tracked_weight@new(p) == tracked_weight@old(p));
+	havoc sum_tracked_weight assuming sum_tracked_weight@new() == sum_tracked_weight@old() - old_votes + votes;
+    havoc votesAgainst assuming votesAgainst@new() == votesAgainst@old() - old_votes + votes;
+}
+
+hook Sstore _proposalVotes [KEY uint256 pId].forVotes uint256 votes(uint256 old_votes) STORAGE {
+	havoc tracked_weight assuming forall uint256 p.(p == pId => tracked_weight@new(p) == tracked_weight@old(p) - old_votes + votes) &&
+	                                            (p != pId => tracked_weight@new(p) == tracked_weight@old(p));
+	havoc sum_tracked_weight assuming sum_tracked_weight@new() == sum_tracked_weight@old() - old_votes + votes;
+    havoc votesFor assuming votesFor@new() == votesFor@old() - old_votes + votes;
+}
+
+hook Sstore _proposalVotes [KEY uint256 pId].abstainVotes uint256 votes(uint256 old_votes) STORAGE {
+	havoc tracked_weight assuming forall uint256 p.(p == pId => tracked_weight@new(p) == tracked_weight@old(p) - old_votes + votes) &&
+	                                            (p != pId => tracked_weight@new(p) == tracked_weight@old(p));
+	havoc sum_tracked_weight assuming sum_tracked_weight@new() == sum_tracked_weight@old() - old_votes + votes;
+    havoc votesAbstain assuming votesAbstain@new() == votesAbstain@old() - old_votes + votes;
+}
+
+
+//////////////////////////////////////////////////////////////////////////////
+////////////////////////////// INVARIANTS ////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+///////////////////////////////// RULES //////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+
+
+//NOT FINISHED
+/*
+* the sum of voting power of those who voted is less or equal to the maximum possible votes, per each proposal
+*/
+rule possibleTotalVotes(uint256 pId, uint8 sup, env e, method f) {
+
+    // add requireinvariant  for all i, j. i = i - 1 && i < j => checkpointlookup[i] < checkpointlookup[j];
+    require tracked_weight(pId) <= erc20votes.getPastTotalSupply(e, proposalSnapshot(pId));
+
+    uint256 againstB;
+    uint256 forB;
+    uint256 absatinB;
+    againstB, forB, absatinB = proposalVotes(pId);
+
+    calldataarg args;
+    //f(e, args);
+
+    castVote(e, pId, sup);
+
+    uint256 against;
+    uint256 for;
+    uint256 absatin;
+    against, for, absatin = proposalVotes(pId);
+
+    uint256 ps = proposalSnapshot(pId);
+
+    assert tracked_weight(pId) <= erc20votes.getPastTotalSupply(e, proposalSnapshot(pId)), "bla bla bla";
+}