Goal:
  
  A : Type
  f : A -> bool
  g : A -> bool
  x : option A
  Hf : forall x : A, f x -> g x
  ============================
   (foroptb f x -> foroptb g x)


DEBUG:Going to execute:
destruct x

Goals:
  
  A : Type
  f : A -> bool
  g : A -> bool
  a : A
  Hf : forall x : A, f x -> g x
  ============================
   (foroptb f (Some a) -> foroptb g (Some a))

    A : Type  f : A -> bool  g : A -> bool  Hf : forall x : A, f x -> g x
  ============================
   (foroptb f None -> foroptb g None)


DEBUG:Going to execute:
simpl => //
DEBUG LTAC Evaluated term: x