Goal:
  
  A : Type
  B : Type
  C : Type
  P : A → B → Type
  Q : B → C → Type
  R : A → C → Type
  l'' : list C
  a1' : list B
  a1 : list C
  a : All2 Q a1' a1
  ============================
   ({| pr1 := []; pr2 := l'' |} = {| pr1 := a1'; pr2 := a1 |}
    → let H := CoreTactics.block in
      let H0 := CoreTactics.block in
      (∀ (x : A) (y : B) (z : C), P x y → Q y z → R x z) → All2 R [] l'')


DEBUG:Going to execute:
destruct p || (case p; clear p)
Level 4: evaluation of term
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1


Level 3: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1

Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1

Level 2: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1


Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1

Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1

Level 1: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1

Level 1: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1


Level 1: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1

Level 0: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All2 Q a1' a1)"
in
environment:
A : Type
B : Type
C : Type
P : A → B → Type
Q : B → C → Type
R : A → C → Type
l'' : list C
a1' : list B
a1 : list C
a : All2 Q a1' a1