pragma experimental SMTChecker; contract C { function abiDecodeSimple(bytes memory b1, bytes memory b2) public pure { (uint x, uint y) = abi.decode(b1, (uint, uint)); (uint z, uint w) = abi.decode(b1, (uint, uint)); assert(x == z); assert(x == y); // should fail assert(y == w); assert(z == w); // should fail (uint a, uint b, bool c) = abi.decode(b1, (uint, uint, bool)); assert(a == x); // should fail assert(b == y); // should fail assert(c); // should fail (uint k, uint l) = abi.decode(b2, (uint, uint)); assert(k == x); // should fail assert(l == y); // should fail } } // ==== // SMTIgnoreCex: yes // ---- // Warning 6328: (241-255): CHC: Assertion violation happens here. // Warning 6328: (292-306): CHC: Assertion violation happens here. // Warning 6328: (391-405): CHC: Assertion violation happens here. // Warning 6328: (424-438): CHC: Assertion violation happens here. // Warning 6328: (457-466): CHC: Assertion violation happens here. // Warning 6328: (537-551): CHC: Assertion violation happens here. // Warning 6328: (570-584): CHC: Assertion violation happens here.