contract C { function abiEncodeSlice(bytes calldata data) external pure { bytes memory b1 = abi.encode(data); bytes memory b2 = abi.encode(data[0:]); // should hold but the engine cannot infer that data is fully equals data[0:] because each index is assigned separately assert(b1.length == b2.length); // fails for now // Disabled because of Spacer nondeterminism //bytes memory b3 = abi.encode(data[:data.length]); // should hold but the engine cannot infer that data is fully equals data[:data.length] because each index is assigned separately //assert(b1.length == b3.length); // fails for now // Disabled because of Spacer nondeterminism //bytes memory b4 = abi.encode(data[5:10]); //assert(b1.length == b4.length); // should fail // Disabled because of Spacer nondeterminism in Z3 4.8.9 //uint x = 5; //uint y = 10; //bytes memory b5 = abi.encode(data[x:y]); // should hold but the engine cannot infer that data[5:10] is fully equals data[x:y] because each index is assigned separately //assert(b1.length == b5.length); // fails for now } } // ==== // SMTEngine: all // SMTIgnoreCex: yes // ---- // Warning 6328: (279-309): CHC: Assertion violation happens here.