proposition: Lemma update_update_frames: forall frames r1 r2, Zlength r1 = Zlength (frames2rootpairs frames) -> Zlength r1 = Zlength r2 -> update_frames (update_frames frames r1) r2 = update_frames frames r2.
proof: Proof. induction frames as [ | [a r s] ?]; simpl; intros; auto. autorewrite with sublist in H. simpl in H. f_equal. f_equal. list_solve. rewrite IHframes; clear IHframes; auto; list_solve. Qed.
imports: Coq.ZArith.ZArith Coq.Program.Basics Coq.micromega.Lia compcert.lib.Integers compcert.common.Values VST.veric.base VST.veric.Clight_lemmas VST.veric.val_lemmas VST.veric.shares VST.msl.seplog VST.msl.shares VST.zlist.sublist VST.floyd.coqlib3 VST.floyd.functional_base VST.floyd.data_at_rec_lemmas VST.zlist.list_solver CertiGraph.lib.EquivDec_ext CertiGraph.lib.List_ext CertiGraph.graph.graph_model CertiGraph.graph.graph_gen