Goal:
  
  G1 : t
  G2 : t
  __view_subject_4_ : VSet.Subset (V G1) (V G2)
  __view_subject_5_ : EdgeSet.Subset (E G1) (E G2)
  __view_subject_6_ : s G1 = s G2
  h : VSet.For_all
        (fun x : VSet.elt =>
         VSet.for_all (fun y : VSet.elt => lsp G1 x y == lsp G2 x y) (V G1) =
         true) (V G1)
  ============================
   (forall v1 v2 : VSet.elt,
    VSet.In v1 (V G1) ->
    VSet.In v2 (V G1) -> (lsp G2 v1 v2 <= lsp G1 v1 v2)%nbar)


DEBUG:Going to execute:
trivial; hnf; intros