contract C { function g(address payable i) public { require(address(this).balance == 100); i.call{value: 0}(""); assert(address(this).balance == 100); // should hold assert(address(this).balance == 20); // should fail } } // ==== // SMTEngine: all // ---- // Warning 9302: (96-116): Return value of low-level calls not used. // Warning 6328: (120-156): CHC: Assertion violation might happen here. // Warning 6328: (175-210): CHC: Assertion violation happens here. // Warning 4661: (120-156): BMC: Assertion violation happens here.