src/HOL/SMT/Examples/cert/z3_linarith_12

fix definitions of copy combinators

(benchmark Isabelle
:extrafuns (
  (uf_2 Int)
  (uf_1 Int)
 )
:assumption (not (iff (or (<= 0 (+ uf_1 (* (~ 1) uf_2))) (or (not (<= 0 uf_2)) (<= 0 uf_2))) (not false)))
:formula true
)