Goal:
    G : t  HI : invariants  s0 : VSet.t  x : V.t
  ============================
   (0 <> 0 -> VSet.In x s0)


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