contract C { uint x; address owner; modifier onlyOwner { if (msg.sender == owner) _; } function f() public onlyOwner { x = 0; } function g(uint y) public { x = 1; if (y > 0) f(); // Fails for {y = >0, msg.sender == owner, x = 0}. assert(x > 0); } } // ==== // SMTEngine: all // SMTIgnoreOS: macos // ---- // Warning 6328: (254-267): CHC: Assertion violation happens here.\nCounterexample:\nx = 0, owner = 0x0\ny = 1\n\nTransaction trace:\nC.constructor()\nState: x = 0, owner = 0x0\nC.f()\nState: x = 0, owner = 0x0\nC.g(1)\n C.f() -- internal call