proposition: Lemma gpaco10_step clo r rg: gf (gpaco10 clo rg rg) <10= gpaco10 clo r rg.
proof: Proof. intros. apply gpaco10_step_gen. eapply gf_mon. apply PR. intros. eapply gpaco10_mon. apply PR0. left; apply PR1. left; apply PR1. Qed.
imports: Program.Basics Paco(paco10 pacotac)