proposition: Lemma gpaco7_unfold_bot clo (WCMP: wcompatible7 gf clo): gpaco7 gf clo bot7 bot7 <7= gf (gpaco7 gf clo bot7 bot7).
proof: Proof. intros. apply gpaco7_init in PR; [|apply WCMP]. _punfold PR; [..|apply gf_mon]. eapply gf_mon. apply PR. intros. destruct PR0; [|contradiction]. apply gpaco7_final. apply gf_mon. right. apply H. Qed.
imports: Program.Basics Paco(paco7 pacotac)