solidity/test/libsolidity/smtCheckerTests/abi/abi_encode_with_sig_hash.sol

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contract C {
function abiEncodeHash(string memory sig, uint a, uint b) public pure {
require(a == b);
bytes memory b1 = abi.encodeWithSignature(sig, a, a, a, a);
bytes memory b2 = abi.encodeWithSignature(sig, b, a, b, a);
assert(keccak256(b1) == keccak256(b2));
bytes memory b3 = abi.encodeWithSelector("f()", a, a, a, a);
assert(keccak256(b1) == keccak256(b3)); // should fail
assert(keccak256(b1) != keccak256(b3)); // should fail
}
}
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// ====
// SMTEngine: all
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// SMTIgnoreOS: macos
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// ----
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// Warning 6328: (337-375): CHC: Assertion violation happens here.
// Warning 6328: (394-432): CHC: Assertion violation happens here.
// Info 1391: CHC: 1 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.