proposition: Lemma guarded_si_dst1: forall PV PE (G1 G2: PGraph), guarded_structurally_identical PV PE G1 G2 -> forall e, PE e -> evalid G1 e -> dst G1 e = dst G2 e.
proof: Proof. intros. rewrite guarded_si_spec in H. apply (proj2 (proj2 (proj2 H))); auto. rewrite <- (proj1 (proj2 H)); auto. Qed.
imports: Coq.Logic.ProofIrrelevance Coq.Sets.Ensembles Coq.Sets.Finite_sets Coq.Classes.Morphisms CertiGraph.lib.Coqlib CertiGraph.lib.Ensembles_ext CertiGraph.lib.relation_list CertiGraph.lib.List_ext CertiGraph.lib.Equivalence_ext CertiGraph.lib.EquivDec_ext VST.msl.Coqlib2 Coq.Lists.List CertiGraph.graph.graph_model CertiGraph.graph.path_lemmas CertiGraph.graph.reachable_ind CertiGraph.graph.graph_gen