Goal:
  
  A : Type
  P : list A → A → Type
  d : A
  Γ : list A
  a : All_fold P Γ
  p : P Γ d
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in
    noConfusionHom_All_fold_obligation_1 A P (d :: Γ) 
      (All_fold_cons P a p) (All_fold_cons P a p)
      (noConfusionHom_All_fold_obligation_2 A P (d :: Γ)
         (All_fold_cons P a p) (All_fold_cons P a p) eq_refl) = eq_refl)


DEBUG:Going to execute:
change T; CoreTactics.intros_until_block
Level 6: T
 has value 
(let H := CoreTactics.block in
 noConfusionHom_All_fold_obligation_1 A P (d :: Γ) 
   (All_fold_cons P a p) (All_fold_cons P a p)
   (noConfusionHom_All_fold_obligation_2 A P (d :: Γ) 
      (All_fold_cons P a p) (All_fold_cons P a p) eq_refl) = eq_refl)