proposition: Lemma pvs_lt_rev: forall g gen i j, (previous_vertices_size g gen i < previous_vertices_size g gen j)%Z -> i < j.
proof: Proof. intros. destruct (le_lt_dec j i). - apply (pvs_mono g gen) in l. exfalso. lia. - assumption. Qed.
imports: Coq.ZArith.ZArith Coq.Program.Basics Coq.micromega.Lia compcert.lib.Integers compcert.common.Values VST.veric.base VST.veric.Clight_lemmas VST.veric.val_lemmas VST.veric.shares VST.msl.seplog VST.msl.shares VST.zlist.sublist VST.floyd.coqlib3 VST.floyd.functional_base VST.floyd.data_at_rec_lemmas VST.zlist.list_solver CertiGraph.lib.EquivDec_ext CertiGraph.lib.List_ext CertiGraph.graph.graph_model CertiGraph.graph.graph_gen