Goal:
  
  A : Type
  B : Type
  C : Type
  R : A → B → C → Type
  l0 : list A
  l1 : list B
  l : list C
  a : All3 R l0 l1 l
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in
    noConfusionHom_All3_obligation_1 A B C R l0 l1 l a a
      (noConfusionHom_All3_obligation_2 A B C R l0 l1 l a a eq_refl) =
    eq_refl)


DEBUG:Going to execute:
destruct p || (case p; clear p)
Level 7: evaluation of term
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l


Level 6: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l

Level 5: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l

Level 5: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l


Level 5: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l

Level 5: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l

Level 4: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l

Level 4: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l


Level 4: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l

Level 3: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All3 R l0 l1 l)"
in
environment:
A : Type
B : Type
C : Type
R : A → B → C → Type
l0 : list A
l1 : list B
l : list C
a : All3 R l0 l1 l