Goal:
  
  A : Type
  P : list A → list A → A → A → Type
  d : A
  d' : A
  Γ : list A
  Γ' : list A
  a : All2_fold P Γ Γ'
  p : P Γ Γ' d d'
  idx2 : list A
  idx1 : list A
  b : All2_fold P idx2 idx1
  ============================
   (∀ (H := CoreTactics.block) (e : NoConfusion_All2_fold A P
                                      {|
                                        pr1 :=
                                          {|
                                            pr1 := d :: Γ; pr2 := d' :: Γ'
                                          |};
                                        pr2 := All2_fold_cons P a p
                                      |}
                                      {|
                                        pr1 := {| pr1 := idx2; pr2 := idx1 |};
                                        pr2 := b
                                      |}),
      let H0 := CoreTactics.block in
      noConfusion_All2_fold_obligation_2 A P
        {|
          pr1 := {| pr1 := d :: Γ; pr2 := d' :: Γ' |};
          pr2 := All2_fold_cons P a p
        |} {| pr1 := {| pr1 := idx2; pr2 := idx1 |}; pr2 := b |}
        (noConfusion_All2_fold_obligation_1 A P
           {|
             pr1 := {| pr1 := d :: Γ; pr2 := d' :: Γ' |};
             pr2 := All2_fold_cons P a p
           |} {| pr1 := {| pr1 := idx2; pr2 := idx1 |}; pr2 := b |} e) = e)


DEBUG:Going to execute:
destruct p || (case p; clear p)
Level 6: evaluation of term
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1


Level 5: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1

Level 4: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1

Level 4: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1


Level 4: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1

Level 4: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1

Level 3: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1

Level 3: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1


Level 3: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1

Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2_fold P idx2 idx1)"
in
environment:
A : Type
P : list A → list A → A → A → Type
d, d' : A
Γ, Γ' : list A
a : All2_fold P Γ Γ'
p : P Γ Γ' d d'
idx2, idx1 : list A
b : All2_fold P idx2 idx1