Goal:
    A : Type  P : A → A → Type  hd : A  hd' : A  tl : list A  p : P hd hd'
  ============================
   (P hd hd' × hd :: tl = [] ++ hd :: tl ∧ hd' :: tl = [] ++ hd' :: tl)


DEBUG:Going to execute:
eauto
DEBUG LTAC Evaluated term: hd
DEBUG LTAC Evaluated term: hd'
DEBUG LTAC Evaluated term: []
DEBUG LTAC Evaluated term: tl