| stat ≠ used ⊦ wlar[m] = wl-entry(m0, stat) → (valid-ebatbl(apebs[m, apeb], wlar, vols, n) ↔ valid-ebatbl(apebs, wlar, vols, n)) |
wlar[m] = wl-entry(m0, stat) ⊦ valid-ebatbl(apebs[m, apeb], wlar, vols, n) ↔ valid-ebatbl(apebs, wlar, vols, n), stat = used