(set-logic QF_BV)
(set-info :status unsat)
(declare-const v0 (_ BitVec 8))
(declare-const v1 (_ BitVec 8))
(assert (or (not (bvule (bvxor v0 v1) (bvor v0 v1))) (not (bvule (bvand v0 v1) (bvxnor v0 v1)))))
(check-sat)