proposition: Lemma gpaco7_gen_guard clo r rg: gpaco7 clo r (rg \7/ r) <7= gpaco7 clo r rg.
proof: Proof. intros. destruct PR. econstructor. eapply rclo7_mon. apply IN. intros. destruct PR; [|right; apply H]. left. eapply paco7_mon_gen; intros. apply H. apply PR. destruct PR. apply H0. right. apply H0. Qed.
imports: Program.Basics Paco(paco7 pacotac)