| ⊦ v ∈ vols ∧ m < # vols[v] ∧ vols[v][m] = ⌜n⌝ ∧ valid-ebatbl(apebs, wlar, vols, n0) ∧ valid-wl(apebs, wlar) ∧ apebs[n] = mkpeb(aehdr, avhdr, buf, m0, boolvar) → ¬ boolvar |
vols[v][m] = ⌜n⌝ , apebs[n] = mkpeb(aehdr, avhdr, buf, m0, boolvar), boolvar, m < # vols[v], valid-ebatbl(apebs, wlar, vols, n0), valid-wl(apebs, wlar), v ∈ vols ⊦