contract C
{
	function f(uint x, bool b) public pure {
		require(x < 10);
		while (x < 10) {
			if (b)
				++x;
			else {
				break;
			}
		}
		// Fails because the loop might break.
		assert(x >= 10);
	}
}
// ====
// SMTEngine: all
// SMTSolvers: z3
// ----
// Warning 6328: (185-200): CHC: Assertion violation happens here.
// Info 1391: CHC: 1 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.