Goal:
    A : Type  P : A → Type  Q : A → Type  Hl'1 : list A  Hl' : All Q Hl'1
  ============================
   ([] = Hl'1
    → let H := CoreTactics.block in
      let H0 := CoreTactics.block in All (λ x : A, P x × Q x) [])


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
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1


Level 3: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1

Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1

Level 2: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1


Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1

Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1

Level 1: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1

Level 1: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1


Level 1: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1

Level 0: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All Q Hl'1)"
in environment:
A : Type
P : A → Type
Q : A → Type
Hl'1 : list A
Hl' : All Q Hl'1