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Updated and cleaned up rule descriptions

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This commit is contained in:
Thomas Adams
2022-06-06 11:50:05 -07:00
parent ffa3daa5d9
commit 3ccaf4f6d1
1 changed files with 3 additions and 12 deletions
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15
certora/specs/ERC1155Burnable.spec
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@ -5,15 +5,7 @@ methods {
/// If a method call reduces account balances, the caller must be either the
/// holder of the account or approved to act on the holder's behalf.
/// n.b. This rule was passing for all methods except `_burn` and `_burnBatch`,
/// ordinarily internal methods that are callable by our tool only because they
/// were changed to public for the purposes of prior verification. Filtered here
/// since they are not generally callable.
rule onlyHolderOrApprovedCanReduceBalance(method f)
filtered {
f -> f.selector != _burn(address,uint256,uint256).selector
&& f.selector != _burnBatch(address,uint256[],uint256[]).selector
}
{
address holder; uint256 token; uint256 amount;
uint256 balanceBefore = balanceOf(holder, token);
@ -52,10 +44,9 @@ rule burnAmountProportionalToBalanceReduction {
"A larger burn must lead to a larger decrease in balance";
}
/// @decription Two sequential burns must be equivalent to a single burn of the sum of their
/// Two sequential burns must be equivalent to a single burn of the sum of their
/// amounts.
/// @formula <pseudocode math description
/// @nota_bene This rule holds for `burnBatch` as well due to rules establishing
/// This rule holds for `burnBatch` as well due to rules establishing
/// appropriate equivance between `burn` and `burnBatch` methods.
rule sequentialBurnsEquivalentToSingleBurnOfSum {
storage beforeBurns = lastStorage;
@ -106,7 +97,7 @@ rule singleTokenBurnBurnBatchEquivalence {
"Burning a single token via burn or burnBatch must be equivalent";
}
/// @description The results of burning multiple tokens must be equivalent whether done
/// The results of burning multiple tokens must be equivalent whether done
/// separately via burn or together via burnBatch.
rule multipleTokenBurnBurnBatchEquivalence {
storage beforeBurns = lastStorage;