pragma experimental SMTChecker; contract C { uint x; modifier m { require(x > 0); _; // Fails because of overflow behavior. // Overflow is not reported because this assertion prevents // it from reaching the end of the function. assert(x > 1); } function f() m public { assert(x > 0); x = x + 1; } } // ---- // Warning: (245-258): Assertion violation happens here