refine congr (congrArg _ ?_) ?_
α : Type u
β : Type v
inst✝³ : BishopFin α
inst✝² : BishopFin β
p q : α → Prop
inst✝¹ : DecidablePred p
inst✝ : DecidablePred q
⊢ (count (q ∘ Subtype.val) + count fun a => ¬(q ∘ Subtype.val) a) =
    (count fun a => p a ∧ q a) + count fun a => p a ∧ ¬q a
case refine_1
α : Type u
β : Type v
inst✝³ : BishopFin α
inst✝² : BishopFin β
p q : α → Prop
inst✝¹ : DecidablePred p
inst✝ : DecidablePred q
⊢ count (q ∘ Subtype.val) = count fun a => p a ∧ q a

case refine_2
α : Type u
β : Type v
inst✝³ : BishopFin α
inst✝² : BishopFin β
p q : α → Prop
inst✝¹ : DecidablePred p
inst✝ : DecidablePred q
⊢ (count fun a => ¬(q ∘ Subtype.val) a) = count fun a => p a ∧ ¬q a