{motive_1 : Lean.Language.SnapshotTree → Sort u} →
  {motive_2 : Array (Lean.Language.SnapshotTask Lean.Language.SnapshotTree) → Sort u} →
    {motive_3 : List (Lean.Language.SnapshotTask Lean.Language.SnapshotTree) → Sort u} →
      {motive_4 : Lean.Language.SnapshotTask Lean.Language.SnapshotTree → Sort u} →
        {motive_5 : Task Lean.Language.SnapshotTree → Sort u} →
          (t : Array (Lean.Language.SnapshotTask Lean.Language.SnapshotTree)) →
            ((t : Lean.Language.SnapshotTree) → t.below → motive_1 t) →
              ((t : Array (Lean.Language.SnapshotTask Lean.Language.SnapshotTree)) →
                  Lean.Language.SnapshotTree.below_1 t → motive_2 t) →
                ((t : List (Lean.Language.SnapshotTask Lean.Language.SnapshotTree)) →
                    Lean.Language.SnapshotTree.below_2 t → motive_3 t) →
                  ((t : Lean.Language.SnapshotTask Lean.Language.SnapshotTree) →
                      Lean.Language.SnapshotTree.below_3 t → motive_4 t) →
                    ((t : Task Lean.Language.SnapshotTree) → Lean.Language.SnapshotTree.below_4 t → motive_5 t) →
                      motive_2 t ×' Lean.Language.SnapshotTree.below_1 t