pragma experimental SMTChecker; contract C { uint x; modifier m { if (x == 0) _; } function f() m public view { assert(x == 0); assert(x > 1); } } // ---- // Warning 6328: (144-157): CHC: Assertion violation happens here.\nCounterexample:\nx = 0\n\n\n\nTransaction trace:\nconstructor()\nState: x = 0\nf()