contract C {
	uint[] a;
	function f() public {
		a.push();
		assert(a[a.length - 1] == 100);
	}
}
// ====
// SMTEngine: all
// SMTIgnoreCex: no
// ----
// Warning 6328: (61-91): CHC: Assertion violation happens here.\nCounterexample:\na = [0]\n\nTransaction trace:\nC.constructor()\nState: a = []\nC.f()
// Info 1391: CHC: 2 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.