; COMMAND-LINE: --strict-parsing
(set-info :status unsat)
(set-logic QF_BV)
(declare-const x (_ BitVec 8))
(declare-const y (_ BitVec 8))
(declare-const z (_ BitVec 8))
(assert (or (not (= (bvadd x y z) (bvadd (bvadd x y) z)))
            (not (= (bvmul x y z) (bvmul (bvmul x y) z)))
            (not (= (bvand x y z) (bvand (bvand x y) z)))
            (not (= (bvor x y z) (bvor (bvor x y) z)))
            (not (= (bvxor x y z) (bvxor (bvxor x y) z)))
            (not (= (bvxnor x y z) (bvxnor (bvxnor x y) z)))))
(check-sat)