proposition: Lemma gpaco1_unfold_bot clo (WCMP: wcompatible1 gf clo): gpaco1 gf clo bot1 bot1 <1= gf (gpaco1 gf clo bot1 bot1).
proof: Proof. intros. apply gpaco1_init in PR; [|apply WCMP]. _punfold PR; [..|apply gf_mon]. eapply gf_mon. apply PR. intros. destruct PR0; [|contradiction]. apply gpaco1_final. apply gf_mon. right. apply H. Qed.
imports: Program.Basics Paco(paco1 pacotac)