Definition super_non_expansive' {A} P := forall n ts x, compcert_rmaps.RML.R.approx n (P ts x) =
  compcert_rmaps.RML.R.approx n (P ts (functors.MixVariantFunctor.fmap (rmaps.dependent_type_functor_rec ts A)
        (compcert_rmaps.RML.R.approx n) (compcert_rmaps.RML.R.approx n) x)).Corollary approx_sepcon_list' : forall n lP P,
  compcert_rmaps.RML.R.approx n (fold_right sepcon emp lP)  * compcert_rmaps.RML.R.approx n P =
  fold_right sepcon emp (map (compcert_rmaps.RML.R.approx n) lP) * compcert_rmaps.RML.R.approx n P.

(* Specifications: *)
Lemma approx_FF : forall n, compcert_rmaps.RML.R.approx n FF = FF.
Lemma later_nonexpansive : nonexpansive (@later mpred _ _).