Goal:
    n : nat  m : nat  k : nat  H : Init.Nat.max n m = k
  ============================
   (n = k \/ m = k)


DEBUG:Going to execute:
intros; Zify.zify_pre_hook; zify_elim_let; zify_op;
            Zify.zify_iter_specs; Zify.zify_to_euclidean_division_equations;
            Zify.zify_post_hook