proposition: Lemma le_inv_nc : forall a b n c n' c', cons a b n c <= cons a b n' c' -> (n<n')%nat \/ n=n' /\ c<= c'.
proof: Proof. inversion_clear 1. injection H0;intros;right;auto with T2. inversion_clear H0; try lt_clean;auto with T2. Qed.
imports: EPSILON0 Arith List Omega Compare_dec Relations Wellfounded Max Tools More_nat AccP not_decreasing EPSILON0 More_nat Gamma0_prelude Gamma0_length term rpo