Goal:
  
  A : Type
  P : list A → list A → A → A → Type
  Γ : list A
  H : All2_fold P Γ Γ
  ============================
   (All_fold (λ (Γ : list A) (d : A), P Γ Γ d d) Γ)


DEBUG:Going to execute:
try intros until H; intro_block H;
            (try simpl in H; DepElim.simplify_equations_in H);
            DepElim.generalize_by_eqs_vars H; CoreTactics.block_goal; 
            tac H; CoreTactics.intros_until_block; DepElim.simpl_dep_elim
Level 3: evaluation returns
try intros until H; intro_block H;
 (try simpl in H; DepElim.simplify_equations_in H);
 DepElim.generalize_by_eqs_vars H; CoreTactics.block_goal; 
 tac H; CoreTactics.intros_until_block; DepElim.simpl_dep_elim;
 CoreTactics.unblock_goal
where
tac := fun hyp => DepElim.do_ind hyp
       where
       id := H
       of type
       ident
of type
tacvalue
H := H
of type
ident of type tacvalue

Level 2: evaluation returns
try intros until H; intro_block H;
 (try simpl in H; DepElim.simplify_equations_in H);
 DepElim.generalize_by_eqs_vars H; CoreTactics.block_goal; 
 tac H; CoreTactics.intros_until_block; DepElim.simpl_dep_elim;
 CoreTactics.unblock_goal
where
tac := fun hyp => DepElim.do_ind hyp
       where
       id := H
       of type
       ident
of type
tacvalue
H := H
of type
ident of type tacvalue

Level 1: evaluation returns
try intros until H; intro_block H;
 (try simpl in H; DepElim.simplify_equations_in H);
 DepElim.generalize_by_eqs_vars H; CoreTactics.block_goal; 
 tac H; CoreTactics.intros_until_block; DepElim.simpl_dep_elim;
 CoreTactics.unblock_goal
where
tac := fun hyp => DepElim.do_ind hyp
       where
       id := H
       of type
       ident
of type
tacvalue
H := H
of type
ident of type tacvalue