contract C { function g(address payable i) public { require(address(this).balance == 100); i.call{value: 10}(""); assert(address(this).balance == 90); // should hold assert(address(this).balance == 100); // should fail } } // ==== // SMTEngine: all // SMTIgnoreOS: macos // ---- // Warning 9302: (96-117): Return value of low-level calls not used. // Warning 6328: (121-156): CHC: Assertion violation might happen here. // Warning 6328: (175-211): CHC: Assertion violation happens here.\nCounterexample:\n\ni = 0x0\n\nTransaction trace:\nC.constructor()\nC.g(0x0)\n i.call{value: 10}("") -- untrusted external call // Warning 4661: (121-156): BMC: Assertion violation happens here.