pragma experimental SMTChecker; contract C { modifier m(uint a, uint b) { require(g(a, b)); _; } modifier notZero(uint x) { require(x > 0); _; } function g(uint a, uint b) notZero(a) internal pure returns (bool) { return a > b; } function f(uint x) m(x, 0) public pure { assert(x > 0); assert(x > 1); } } // ---- // Warning 6328: (311-324): Assertion violation happens here.