proposition: Lemma gpaco8_gen_guard clo r rg: gpaco8 clo r (rg \8/ r) <8= gpaco8 clo r rg.
proof: Proof. intros. destruct PR. econstructor. eapply rclo8_mon. apply IN. intros. destruct PR; [|right; apply H]. left. eapply paco8_mon_gen; intros. apply H. apply PR. destruct PR. apply H0. right. apply H0. Qed.
imports: Program.Basics Paco(paco8 pacotac)