contract C { function f(uint x, bool b) public pure { require(x < 100); while (x < 10) { if (b) x = x + 1; else x = 0; } assert(x > 0); } } // ==== // SMTEngine: all // SMTSolvers: z3 // ---- // Info 1391: CHC: 2 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.