{motive : Lean.Meta.Grind.CheckCoverageResult → Sort u} →
  motive Lean.Meta.Grind.CheckCoverageResult.ok →
    ((pos : List ℕ) → motive (Lean.Meta.Grind.CheckCoverageResult.missing pos)) →
      (t : Lean.Meta.Grind.CheckCoverageResult) → motive t