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pragma experimental SMTChecker;

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);
    }
}
// ----
// Warning: (177-190): Assertion violation happens here