contract C { function abiEncodeSimple(string memory sig, bool t, uint x, uint y, uint z, uint[] memory a, uint[] memory b) public pure { require(x == y); bytes memory b1 = abi.encodeWithSignature(sig, x, z, a); bytes memory b2 = abi.encodeWithSignature(sig, y, z, a); assert(b1.length == b2.length); // Disabled because of nondeterminism in Spacer Z3 4.8.9 //bytes memory b3 = abi.encodeWithSignature(sig, y, z, b); //assert(b1.length == b3.length); // should fail bytes memory b4 = abi.encodeWithSignature(sig, t, z, a); assert(b1.length == b4.length); // should fail bytes memory b5 = abi.encodeWithSignature(sig, y, y, y, y, a, a, a); assert(b1.length != b5.length); // should fail assert(b1.length == b5.length); // should fail bytes memory b6 = abi.encodeWithSignature("f()", x, z, a); assert(b1.length == b6.length); // should fail } } // ==== // SMTEngine: all // ---- // Warning 5667: (107-122): Unused function parameter. Remove or comment out the variable name to silence this warning. // Warning 6328: (543-573): CHC: Assertion violation happens here.\nCounterexample:\n\nt = false\nx = 0\ny = 0\nz = 0\nb5 = []\nb6 = []\n\nTransaction trace:\nC.constructor()\nC.abiEncodeSimple(sig, false, 0, 0, 0, a, b) // Warning 6328: (664-694): CHC: Assertion violation happens here.\nCounterexample:\n\nt = false\nx = 0\ny = 0\nz = 0\nb6 = []\n\nTransaction trace:\nC.constructor()\nC.abiEncodeSimple(sig, false, 0, 0, 0, a, b) // Warning 6328: (713-743): CHC: Assertion violation happens here.\nCounterexample:\n\nt = false\nx = 0\ny = 0\nz = 0\nb6 = []\n\nTransaction trace:\nC.constructor()\nC.abiEncodeSimple(sig, false, 0, 0, 0, a, b) // Warning 6328: (824-854): CHC: Assertion violation happens here.