proposition: Lemma exists_dec: forall (g: UAdjMatGG) l, (exists (t: UAdjMatGG), labeled_spanning_uforest t g /\ Permutation l (EList t)) \/ ~ (exists (t: UAdjMatGG), labeled_spanning_uforest t g /\ Permutation l (EList t)).
proof: Proof. intros. tauto. Qed.
imports: VST.floyd.proofauto CertiGraph.lib.EquivDec_ext CertiGraph.lib.List_ext CertiGraph.lib.find_lemmas CertiGraph.graph.graph_model CertiGraph.graph.graph_gen CertiGraph.graph.graph_relation CertiGraph.graph.undirected_graph CertiGraph.graph.MathAdjMatGraph