Goal:
    P : E.t -> Prop  P_Proper : Proper (E.eq ==> impl) P  s : t
  ============================
   (List.Exists P nil <-> (exists x : elt, InA E.eq x nil /\ P x))


DEBUG:Going to execute:
split
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: WProperties.FM.elements_iff
DEBUG LTAC Evaluated term: (elements s)