abstract contract D { function no(uint a, uint b) external virtual; } contract C { function callMeMaybe(uint a, uint b) external {} function abiEncodeSimple(D d, uint x, uint y, uint z) public pure { require(x == y); bytes memory b1 = abi.encodeCall(d.no, (x, z)); bytes memory b2 = abi.encodeCall(d.no, (y, z)); assert(b1.length == b2.length); // should hold assert(b1[0] == b2[0]); // should hold bytes memory b3 = abi.encodeCall(d.no, (3, z)); assert(b1.length == b3.length); // should hold but we don't compute the length precisely } } // ==== // SMTEngine: all // SMTIgnoreCex: yes // ---- // Warning 6368: (382-387): CHC: Out of bounds access happens here. // Warning 6368: (391-396): CHC: Out of bounds access happens here. // Warning 6328: (467-497): CHC: Assertion violation happens here. // Info 1391: CHC: 2 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.