proposition: Lemma gpaco11_gen_guard clo r rg: gpaco11 clo r (rg \11/ r) <11= gpaco11 clo r rg.
proof: Proof. intros. destruct PR. econstructor. eapply rclo11_mon. apply IN. intros. destruct PR; [|right; apply H]. left. eapply paco11_mon_gen; intros. apply H. apply PR. destruct PR. apply H0. right. apply H0. Qed.
imports: Program.Basics Paco(paco11 pacotac)