proposition: Lemma adde_elabel1: elabel EdgeListGG_adde (u,v) = w.
proof: Proof. simpl. unfold update_elabel. unfold equiv_dec. destruct E_EqDec. auto. unfold complement in c. unfold equiv in c. contradiction. Qed.
imports: VST.floyd.proofauto CertiGraph.lib.Coqlib CertiGraph.lib.EquivDec_ext CertiGraph.lib.List_ext CertiGraph.graph.graph_model CertiGraph.graph.graph_gen CertiGraph.graph.FiniteGraph CertiGraph.graph.undirected_graph