proposition: Lemma adde_elabel_old: forall e, e <> (u,v) -> elabel UAdjMatGG_adde e = elabel g e.
proof: Proof. intros. simpl. unfold update_elabel, equiv_dec. destruct E_EqDec. unfold equiv in e0. symmetry in e0; contradiction. auto. Qed.
imports: VST.floyd.proofauto CertiGraph.lib.EquivDec_ext CertiGraph.lib.List_ext CertiGraph.lib.find_lemmas CertiGraph.graph.graph_model CertiGraph.graph.graph_gen CertiGraph.graph.graph_relation CertiGraph.graph.undirected_graph CertiGraph.graph.MathAdjMatGraph