proposition: Lemma Vector_append_assoc'' {A} : forall m n o z H H' (v1 : Vector.t A m) (v2 : Vector.t A n) (v3 : Vector.t A o), Vector.append (eq_rect _ _ (Vector.append v1 v2) z H) v3 = eq_rect _ _ (Vector.append (Vector.append v1 v2) v3) _ H'.
proof: Proof. intros; subst; simpl. erewrite (UIP_dec _ _ (eq_refl _)); simpl. reflexivity. Unshelve. decide equality. Qed.
imports: Fiat.Common.Coq__8_4__8_5__Compat Bedrock.Word Coq.ZArith.ZArith Coq.NArith.NArith Coq.Arith.Arith Coq.Numbers.Natural.Peano.NPeano Coq.Logic.Eqdep_dec Fiat.Narcissus.Common.Specs Fiat.Narcissus.BinLib.Core Fiat.Narcissus.Formats.ByteBuffer Coq.Strings.String Coq.Vectors.Vector Fiat.Narcissus.Formats.WordOpt Fiat.Common.Equality