proposition: Corollary epath_to_vpath_foot: forall (g: PreGraph V E) p, valid_path g p -> last_error (epath_to_vpath g p) = Some (pfoot g p).
proof: Proof. destruct p. apply epath_to_vpath_foot'. Qed.
imports: Coq.Logic.Classical CertiGraph.lib.List_ext CertiGraph.lib.EquivDec_ext CertiGraph.graph.graph_model CertiGraph.graph.graph_relation CertiGraph.graph.path_lemmas CertiGraph.graph.graph_gen CertiGraph.graph.FiniteGraph