Goal:
  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  x : A
  l : list A
  H : Q x
  HQ : Forall Q l
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  IHHQ : Forall P l → forallb p l = true
  HP : Forall P (x :: l)
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p (x :: l) = true)


DEBUG:Going to execute:
simpl in e

Goals:
  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  HP : Forall P []
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p [] = true)

  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  x : A
  l : list A
  H : Q x
  HQ : Forall Q l
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  IHHQ : Forall P l → forallb p l = true
  HP : Forall P (x :: l)
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p (x :: l) = true)


DEBUG:Going to execute:
DepElim.generalize_by_eqs H
Level 0: Backtrace:

Failed to progress.
Level 0: Backtrace:

Failed to progress.
Level 0: Backtrace:

Failed to progress.
Level 0: Backtrace:

Failed to progress.
Level 0: Backtrace:

Failed to progress.

Goals:
  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  HP : Forall P []
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p [] = true)

  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  x : A
  l : list A
  H : Q x
  HQ : Forall Q l
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  IHHQ : Forall P l → forallb p l = true
  HP : Forall P (x :: l)
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p (x :: l) = true)


DEBUG:Going to execute:
fun id => DepElim.generalize_eqs_sig id

Goals:
  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  HP : Forall P []
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p [] = true)

  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  x : A
  l : list A
  H : Q x
  HQ : Forall Q l
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  IHHQ : Forall P l → forallb p l = true
  HP : Forall P (x :: l)
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p (x :: l) = true)


DEBUG:Going to execute:
DepElim.generalize_eqs_sig id

Goals:
  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  HP : Forall P []
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p [] = true)

  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  x : A
  l : list A
  H : Q x
  HQ : Forall Q l
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  IHHQ : Forall P l → forallb p l = true
  HP : Forall P (x :: l)
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p (x :: l) = true)


DEBUG:Going to execute:
fun id =>
             (needs_generalization id; DepElim.generalize_sig_dest id) ||
               idtac

Goals:
  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  HP : Forall P []
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p [] = true)

  
  A : Type
  P : A → Prop
  Q : A → Prop
  p : A → bool
  x : A
  l : list A
  H : Q x
  HQ : Forall Q l
  Hp : ∀ x : A, Q x → reflect (P x) (p x)
  IHHQ : Forall P l → forallb p l = true
  HP : Forall P (x :: l)
  ============================
   (let H := CoreTactics.block in
    let H0 := CoreTactics.block in forallb p (x :: l) = true)


DEBUG:Going to execute:
(needs_generalization id; DepElim.generalize_sig_dest id) || idtac