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Proof step 62 from proof delta-wear-leveling (previous step)

wlar0 = wlar, n < # wlar, n1 < # wlar, n ≠ n1, v ∈ vols ∧ m < # vols[v] ∧ vols[v][m] = ⌜n1⌝ ∨ v = VTBL_VOLID ∧ m = VTBL_LNUM ∧ vtblpnum = n1 ⊦ [ubi_atomic_leb_change#(v, m, n, n0, buf, EB_PAGE_SIZE; vols, wlar, q, bflipset, vtblpnum, sqnum, apebs; err)] (Δ wlar = Δ wlar0 ∧ ecs(wlar) = ecs(wlar0) ∧ (err = ESUCCESS → wlar[n].ec = wlar0[n].ec ∧ wlar[n1].ec = wlar0[n1].ec))

A spec-lemma