proposition: Lemma gpaco3_gen_rclo clo r rg: gpaco3 (rclo3 clo) r rg <3= gpaco3 clo r rg.
proof: Proof. intros. destruct PR. econstructor. apply rclo3_compose. eapply rclo3_mon. apply IN. intros. destruct PR; [|right; apply H]. left. eapply paco3_mon_gen; intros; [apply H| |apply PR]. eapply gf_mon, rclo3_compose. apply PR. Qed.
imports: Program.Basics Paco(paco3 pacotac)