fact: Definition path_cost (g: LabeledGraph V E DV Z DG) (path: @path V E) : Z := fold_left Z.add (map (elabel g) (snd path)) 0.
imports: VST.floyd.proofauto Coq.Classes.EquivDec CertiGraph.lib.List_ext CertiGraph.graph.graph_model CertiGraph.graph.path_lemmas