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Proof step 25 from proof prepost-get-peb (previous step)

# apebs = # wlar, apebs0 = apebs, free-ecs(wlar) = ∅, wlar0 = wlar, vtblpnum0 ≠ m, m < # wlar, bflipset-cons(bflipset, wlar), ubi-io-inv(apebs), unique-sqns(apebs), valid-ebatbl(apebs, wlar, vols, vtblpnum0), valid-eraseq(apebs, eq-entry(m, lref) ' + q1), valid-eraseq(wlar, eq-entry(m, lref) ' + q1), valid-eraseq(eq-entry(m, lref) ' + q1), valid-global-sqn(apebs, sqnum), valid-vtbl(apebs, vols, wlar, vtblpnum0), valid-wl(apebs, wlar), ¬ VTBL_VOLID ∈ vols, ¬ vtblpnum0 ∈ q1 ⊦ [ubi_erase_worker_helper#(m; wlar, apebs; err)] ( ( err = ESUCCESS → # apebs = # wlar ∧ unique-sqns(apebs) ∧ valid-global-sqn(apebs, sqnum) ∧ valid-wl(apebs, wlar) ∧ valid-eraseq(q1) ∧ valid-eraseq(wlar, q1) ∧ valid-eraseq(apebs, q1) ∧ bflipset-cons(bflipset, wlar) ∧ valid-ebatbl(apebs, wlar, vols, vtblpnum0) ∧ valid-vtbl(apebs, vols, wlar, vtblpnum0)) ∧ ( err ≠ ESUCCESS → # apebs = # wlar ∧ unique-sqns(apebs) ∧ valid-global-sqn(apebs, sqnum) ∧ valid-wl(apebs, wlar) ∧ valid-eraseq(wlar, eq-entry(m, lref) ' + q1) ∧ valid-eraseq(apebs, eq-entry(m, lref) ' + q1) ∧ bflipset-cons(bflipset, wlar) ∧ valid-ebatbl(apebs, wlar, vols, vtblpnum0) ∧ valid-vtbl(apebs, vols, wlar, vtblpnum0)) ∧ ubi-io-inv(apebs) ∧ wlar[m].status ≠ used ∧ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ id○(wlar, wlar0, m) ∧ id○(apebs, apebs0, m) ∧ id(apebs, apebs0, mapped-pebs(vols)) → ⟪vtblpnum := m; q0 := eq-entry(m, lref) ' + q1; q := eq-entry(m, lref) ' + q1; if err = ESUCCESS then {q := q.tail; if wlar[vtblpnum].status ≠ free then err := ENOSPC} else err := ENOSPC⟫ ( (err = ESUCCESS ∨ ⌊err⌋ ) ∧ ( err ≠ ESUCCESS → # apebs = # wlar ∧ unique-sqns(apebs) ∧ valid-global-sqn(apebs, sqnum) ∧ valid-wl(apebs, wlar) ∧ valid-eraseq(q) ∧ valid-eraseq(wlar, q) ∧ valid-eraseq(apebs, q) ∧ bflipset-cons(bflipset, wlar) ∧ valid-ebatbl(apebs, wlar, vols, vtblpnum0) ∧ valid-vtbl(apebs, vols, wlar, vtblpnum0)) ∧ q.lebrefs ⊆ q0.lebrefs ∧ ( err = ESUCCESS → vtblpnum < # apebs ∧ wlar[vtblpnum].status = free ∧ ( apebs0 = apebs ∧ wlar0 = wlar ∧ q0 = q ∨ id○(apebs0, apebs, vtblpnum) ∧ id○(wlar0, wlar, vtblpnum) ∧ q0 ≠ [] ∧ q0 = eq-entry(vtblpnum, q0.head.lebref) ' + q) ∧ # apebs = # wlar ∧ unique-sqns(apebs) ∧ valid-global-sqn(apebs, sqnum) ∧ valid-wl(apebs, wlar) ∧ valid-eraseq(q) ∧ valid-eraseq(wlar, q) ∧ valid-eraseq(apebs, q) ∧ bflipset-cons(bflipset, wlar) ∧ valid-ebatbl(apebs, wlar, vols, vtblpnum0) ∧ valid-vtbl(apebs, vols, wlar, vtblpnum0))))

User applied rule skip call

And obtained the following new goals

Rule argument

pos: right 1

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