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Proof step 3 from proof wlar-erase-worker-helper (previous step)

wlar[n] = wl-entry(m0, stat0), wlar0 = wlar, n < # wlar ⊦ [ubi_erase_worker_helper#(n; wlar, apebs; err)] ∃ m, stat. m ≠ 0 ∧ m ≤ UBI_ERASE_RETRIES + 1 ∧ wlar = wlar0[n, wl-entry(m0 + m, stat)]

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 4:
wlar[n] = wl-entry(m0, stat0), vtblpnum0 = n, wlar0 = wlar, n < # wlar ⊦ [err := EIO; let vtblpnum = 0 in {while err ≠ ESUCCESS ∧ vtblpnum ≤ UBI_ERASE_RETRIES do {wlar[vtblpnum0].ec := wlar[vtblpnum0].ec + 1; aubi_io_sync_erase#(vtblpnum0; apebs; err); if err = ESUCCESS then aubi_io_write_echdr#(vtblpnum0, aechdr(wlar[vtblpnum0].ec); apebs; err) else debug#("ubi: erase of PEB " + vtblpnum0.toString + " failed"); vtblpnum := vtblpnum + 1}; if err = ESUCCESS then wlar[vtblpnum0].status := free else {aubi_io_markbad#(vtblpnum0; apebs; err); if err = ESUCCESS then wlar[vtblpnum0].status := erroneous else debug#("ubi: marking PEB " + vtblpnum0.toString + " as bad failed")}}] ∃ m, stat. m ≠ 0 ∧ m ≤ UBI_ERASE_RETRIES + 1 ∧ wlar = wlar0[n, wl-entry(m0 + m, stat)]

Rule argument

pos: right 1

Additional information

Used simplifier rules: ubi_erase_worker_helper#(PNUM; WLARRAY, APEBS; ERR) {ERR := EIO; let TRIES = 0 in {while ERR ≠ ESUCCESS ∧ TRIES ≤ UBI_ERASE_RETRIES do {WLARRAY[PNUM].ec := WLARRAY[PNUM].ec + 1; aubi_io_sync_erase#(PNUM; APEBS; ERR); if ERR = ESUCCESS then aubi_io_write_echdr# (PNUM, aechdr(WLARRAY[PNUM].ec); APEBS; ERR) else debug#("ubi: erase of PEB " + PNUM.toString + " failed"); TRIES := TRIES + 1}; if ERR = ESUCCESS then WLARRAY[PNUM].status := free else {aubi_io_markbad#(PNUM; APEBS; ERR); if ERR = ESUCCESS then WLARRAY[PNUM].status := erroneous else debug# ( "ubi: marking PEB " + PNUM.toString + " as bad failed")}} };