proposition: Lemma cpn2_compat: compatible2 gf cpn2.
proof: Proof. econstructor; [apply cpn2_mon|intros]. destruct PR; eapply gf_mon with (r:=clo r). - eapply (compat2_compat COM); apply CLO. - intros. econstructor; [apply COM|apply PR]. Qed.
imports: Program.Basics Paco(paco2 pacotac)