(set-logic QF_BV) (set-info :status unsat) (declare-fun s () (_ BitVec 5)) (declare-fun t () (_ BitVec 5)) (assert (not (= (bvxnor s t) (bvor (bvand s t) (bvand (bvnot s) (bvnot t)))))) (check-sat) (exit)