proposition: Lemma gpaco8_step_gen clo r rg: gf (gpaco8 clo (rg \8/ r) (rg \8/ r)) <8= gpaco8 clo r rg.
proof: Proof. intros. econstructor. apply rclo8_base. left. pstep. eapply gf_mon. apply PR. intros. destruct PR0. eapply rclo8_mon. apply IN. intros. destruct PR0. - left. eapply paco8_mon. apply H. intros. destruct PR0; apply H0. - right. apply H. Qed.
imports: Program.Basics Paco(paco8 pacotac)