fact: Definition wedge_le (x y: wedgerep) := match x, y with | (Vint x',_),(Vint y',_) => Int.signed x' <= Int.signed y' | _,_ => False end.
imports: VST.floyd.proofauto Coq.ZArith.ZArith CertiGraph.floyd_ext.closed_lemmas CertiGraph.kruskal.kruskal_edgelist