Goal:
    A : Type  P : list A → list A → A → A → Type  e : True
  ============================
   (noConfusion_All2_fold_obligation_2 A P
      {| pr1 := {| pr1 := []; pr2 := [] |}; pr2 := All2_fold_nil P |}
      {| pr1 := {| pr1 := []; pr2 := [] |}; pr2 := All2_fold_nil P |}
      (noConfusion_All2_fold_obligation_1 A P
         {| pr1 := {| pr1 := []; pr2 := [] |}; pr2 := All2_fold_nil P |}
         {| pr1 := {| pr1 := []; pr2 := [] |}; pr2 := All2_fold_nil P |} e) =
    e)


DEBUG:Going to execute:
hnf in id
Level 5: evaluation returns
hnf in id; CoreTactics.destruct_tele_eq id || destruct id
where
id := e
of type
constr
b := b
of type
constr
a := a
of type
constr of type tacvalue