{motive : Lean.Meta.Occurrences → Sort u} →
  (t : Lean.Meta.Occurrences) →
    motive Lean.Meta.Occurrences.all →
      ((idxs : List ℕ) → motive (Lean.Meta.Occurrences.pos idxs)) →
        ((idxs : List ℕ) → motive (Lean.Meta.Occurrences.neg idxs)) → motive t