intros.
unfold space_denote.
apply (listd_perm space_atom_denote _ emp (sepconS _ _) (@sepconA state _ _) l l' H) .
Qed.

(* Specifications: *)
Lemma assertion_denote_permute: forall pi l l',
Permutation l l' ->
assertion_denote (Assertion pi l) = assertion_denote (Assertion pi l').