proposition: Corollary size_representable: Int.min_signed <= size <= Int.max_signed.
proof: Proof. pose proof Int.min_signed_neg. lia. 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