src/HOL/SMT/Examples/cert/z3_bv_01

fix definitions of copy combinators

(benchmark Isabelle
:extrafuns (
  (uf_1 BitVec[2] Int)
 )
:assumption (= (uf_1 bv0[2]) 0)
:assumption (= (uf_1 bv1[2]) 1)
:assumption (= (uf_1 bv2[2]) 2)
:assumption (= (uf_1 bv3[2]) 3)
:assumption (forall (?x1 BitVec[2]) (< 0 (uf_1 ?x1)))
:assumption (not (forall (?x2 Int) (implies (< ?x2 0) (forall (?x3 BitVec[2]) (< ?x2 (uf_1 ?x3))))))
:formula true
)