contract C { modifier m(uint a, uint b) { require(a > b); _; } function f(uint x) m(x, 0) public pure { assert(x > 0); assert(x > 1); } } // ==== // SMTEngine: all // ---- // Warning 6328: (131-144): CHC: Assertion violation happens here.\nCounterexample:\n\nx = 1\na = 1\nb = 0\n\nTransaction trace:\nC.constructor()\nC.f(1)