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pragma experimental SMTChecker;
contract C {
    function f(uint x) public pure {
        x = 2;
        while (x > 1) {
            if (x > 10)
                x = 2;
            else
                x = 10;
        }
        assert(x == 2);
    }
}
// ----
// Warning: (158-172): Assertion violation happens here