proposition: Lemma gpaco11_unfold_bot clo (WCMP: wcompatible11 gf clo): gpaco11 gf clo bot11 bot11 <11= gf (gpaco11 gf clo bot11 bot11).
proof: Proof. intros. apply gpaco11_init in PR; [|apply WCMP]. _punfold PR; [..|apply gf_mon]. eapply gf_mon. apply PR. intros. destruct PR0; [|contradiction]. apply gpaco11_final. apply gf_mon. right. apply H. Qed.
imports: Program.Basics Paco(paco11 pacotac)