(set-logic QF_BV)
(declare-fun x () (_ BitVec 32))
(declare-fun y () (_ BitVec 32))
(assert (= (_ bv0 32) x))
(assert (= x y))
(push 1)
(assert false)
(set-info :status unsat)
(check-sat)
(pop 1)
(assert (not (= (_ bv0 32) y)))
(check-sat)
(exit)