Goal:
  
  A : Type
  B : Type
  C : Type
  Q : C → Type
  P : C → A → Prop
  Q' : B → Type
  R : C → A → Prop
  f : ∀ x : A, (∀ y : C, Q y → R y x) → B
  args : list A
  ha : ∀ y : C, Q y → ∥ All (R y) args ∥
  ============================
   ((∀ y : C, Q y → All (P y) args)
    → (∀ (x : A) (y : C) (rx : ∀ y0 : C, Q y0 → R y0 x), P y x → Q' (f x rx))
      → ∀ y : C, Q y → All Q' (map_All f args ha))


DEBUG:Going to execute:
let call := fresh "call" in
           set (call := p);
            lazymatch goal with
            | call:=?fp:_ |- _ => subst call; Init.funelim_constr fp
            end
Level 1: Backtrace:

No matching clauses for match.
Level 0: Backtrace:

No matching clauses for match.