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Proof step 163 from proof wlar-erase-worker-helper (previous step)

wlar[n] = wl-entry(m0, stat0), apebs0[n] = mkpeb(aehdr, avhdr, buf, m1, false), apebs1 = apebs0[n, mkpeb(aehdr0, avhdr0, buf0, m2, false)], vtblpnum = 1, vtblpnum0 = n, wlar0 = wlar[n, wlar[n].ec:= (wlar[n].ec + 1)], vtblpnum0 < # wlar1, n < # wlar, n < # apebs0, id○(wlar, wlar1, n), ubi-io-peb-inv(mkpeb(aehdr0, avhdr0, buf0, m2, false)), vtblpnum1 ≤ UBI_ERASE_RETRIES, vtblpnum1 ≤ UBI_ERASE_RETRIES + 1, ⌊err⌋ , ∃ stat. wlar1 = wlar[n, wl-entry(wlar[n].ec + vtblpnum1, stat)] ⊦ [aubi_io_sync_erase#(vtblpnum0; apebs; err0); wlar1[vtblpnum0].ec := wlar1[vtblpnum0].ec + 1; if err0 = ESUCCESS then aubi_io_write_echdr#(vtblpnum0, aechdr(wlar1[vtblpnum0].ec); apebs; err0) else debug#("ubi: erase of PEB " + vtblpnum0.toString + " failed"); vtblpnum1 := vtblpnum1 + 1] ( n < # wlar ∧ id○(wlar, wlar1, n) ∧ vtblpnum1 ≠ 0 ∧ vtblpnum1 ≤ UBI_ERASE_RETRIES + 1 ∧ (∃ stat. wlar1 = wlar[n, wl-entry(wlar[n].ec + vtblpnum1, stat)])), err0 = ESUCCESS, vtblpnum1 = 0, avhdr0.valid?

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 164:
apebs0[n] = mkpeb(aehdr, avhdr, buf, m1, false), wlar[n] = wl-entry(m0, stat0), err0 ≠ ESUCCESS, vtblpnum1 ≠ 0, n < # apebs0, n < # wlar, ubi-io-peb-inv(mkpeb(aehdr0, avhdr0, buf0, m2, false)), vtblpnum1 ≤ UBI_ERASE_RETRIES + 1, vtblpnum1 ≤ UBI_ERASE_RETRIES, ⌊err⌋ , ¬ avhdr0.valid? ⊦ [aubi_io_sync_erase#(n; apebs; err0); wlar1 := wlar[n, wl-entry(wlar[n].ec + vtblpnum1, stat)] [n, wlar[n, wl-entry(wlar[n].ec + vtblpnum1, stat)][n].ec:= (wlar[n, wl-entry(wlar[n].ec + vtblpnum1, stat)][n].ec + 1) ]; if err0 = ESUCCESS then aubi_io_write_echdr#(n, aechdr(wlar1[n].ec); apebs; err0) else debug#("ubi: erase of PEB " + n.toString + " failed"); vtblpnum1 := vtblpnum1 + 1] (id○(wlar, wlar1, n) ∧ vtblpnum1 ≠ 0 ∧ vtblpnum1 ≤ UBI_ERASE_RETRIES + 1 ∧ (∃ stat. wlar1 = wlar[n, wl-entry(wlar[n].ec + vtblpnum1, stat)]))

Rule argument

Additional information

Used simplifier rules: ⊦ # wlar[n, wle] = # wlar; (s)%⊦ wle = wlar[n] ∧ wle = wlar0[n] → (id○(wlar, wlar0, n) ↔ wlar = wlar0); (s)% ⊦ id○(wlar, wlar0[n, wle], n) ↔ id○(wlar, wlar0, n); (s)