Goal:
  
  P : elt -> elt -> Prop
  s : t
  H : forall x : elt, In x s -> forall x0 : elt, In x0 s -> P x x0
  v1 : elt
  ============================
   (elt -> Prop)


DEBUG:Going to execute:
exact (id0 id1)
DEBUG LTAC Evaluated term: (elt -> Prop)