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Merge pull request #106 from morpho-org/test/abs-certora
Add Certora verification for `abs` and `safeAbs`
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Original file line number | Diff line number | Diff line change |
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#!/bin/bash | ||
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certoraRun \ | ||
test/mocks/MathMock.sol \ | ||
--verify MathMock:certora/specs/bitvectorMath.spec \ | ||
--settings -useBitVectorTheory \ | ||
--msg "Math" \ | ||
$@ |
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Original file line number | Diff line number | Diff line change |
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methods { | ||
function min(uint256, uint256) external returns (uint256) envfree; | ||
function max(uint256, uint256) external returns (uint256) envfree; | ||
} | ||
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/// min /// | ||
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rule minSafety(uint256 a, uint256 b) { | ||
uint res = min(a, b); | ||
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assert a <= b => res == a; | ||
assert a > b => res == b; | ||
} | ||
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rule minLiveness(uint256 a, uint256 b) { | ||
min@withrevert(a, b); | ||
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assert lastReverted <=> false; | ||
} | ||
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/// max /// | ||
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rule maxSafety(uint256 a, uint256 b) { | ||
uint res = max(a, b); | ||
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assert a >= b => res == a; | ||
assert a < b => res == b; | ||
} | ||
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rule maxLiveness(uint256 a, uint256 b) { | ||
max@withrevert(a, b); | ||
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assert lastReverted <=> false; | ||
} |
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