Goal:
  
  A : Type
  P : A → Prop
  Q : A → Prop
  a : A
  l : list A
  a0 : A
  l' : list A
  IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
  ha1 : list A
  ha : All P ha1
  ============================
   (a :: l = ha1
    → let H := CoreTactics.block in
      All Q (a0 :: l')
      → let H0 := CoreTactics.block in
        S #|l| = S #|l'| → All2 (λ x y : A, P x ∧ Q y) (a :: l) (a0 :: 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
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1


Level 3: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1

Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1

Level 2: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1


Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1

Level 2: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1

Level 1: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1

Level 1: evaluation
raised the exception
Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1


Level 1: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1

Level 0: Backtrace:


Could not find an instance for "DepElim.DependentEliminationPackage
                                  (All P ha1)"
in
environment:
A : Type
P, Q : A → Prop
a : A
l : list A
a0 : A
l' : list A
IHl : All P l → All Q l' → #|l| = #|l'| → All2 (λ x y : A, P x ∧ Q y) l l'
ha1 : list A
ha : All P ha1