{n : ℕ} →
  (motive : Option (Std.Tactic.BVDecide.LRAT.Internal.DefaultClause n) → Sort u_1) →
    (x : Option (Std.Tactic.BVDecide.LRAT.Internal.DefaultClause n)) →
      ((c : Std.Tactic.BVDecide.LRAT.Internal.DefaultClause n) → motive (some c)) → (Unit → motive none) → motive x