proposition: Lemma gpaco8_unfold_bot clo (WCMP: wcompatible8 gf clo): gpaco8 gf clo bot8 bot8 <8= gf (gpaco8 gf clo bot8 bot8).
proof: Proof. intros. apply gpaco8_init in PR; [|apply WCMP]. _punfold PR; [..|apply gf_mon]. eapply gf_mon. apply PR. intros. destruct PR0; [|contradiction]. apply gpaco8_final. apply gf_mon. right. apply H. Qed.
imports: Program.Basics Paco(paco8 pacotac)