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Proof step 50 from proof wlar-erase-worker-helper (previous step)

apebs0[n] = mkpeb(aehdr0, avhdr, buf, m1, false), wlar[n] = wl-entry(m0, stat0), apebs = apebs0[n, mkpeb(aehdr, empty, mkempbuf(LEB_SIZE), 0, false)], vtblpnum = n, vtblpnum1 = 1, wlar1 = wlar[n, wl-entry(m0 + 1, stat0)], n < # apebs0, n < # wlar, ⌊err0⌋ , ¬ aehdr.valid? ⊦ [err1 := err0; while err1 ≠ ESUCCESS ∧ vtblpnum1 ≤ UBI_ERASE_RETRIES do {wlar1[vtblpnum].ec := wlar1[vtblpnum].ec + 1; aubi_io_sync_erase#(vtblpnum; apebs; err1); if err1 = ESUCCESS then aubi_io_write_echdr#(vtblpnum, aechdr(wlar1[vtblpnum].ec); apebs; err1) else debug#("ubi: erase of PEB " + vtblpnum.toString + " failed"); vtblpnum1 := vtblpnum1 + 1}; if err1 = ESUCCESS then wlar1[vtblpnum] := wl-entry(wlar1[vtblpnum].ec, free) else {aubi_io_markbad#(vtblpnum; apebs; err1); if err1 = ESUCCESS then wlar1[vtblpnum] := wl-entry(wlar1[vtblpnum].ec, erroneous) else debug#("ubi: marking PEB " + vtblpnum.toString + " as bad failed")}] ∃ m, stat. m ≠ 0 ∧ m ≤ UBI_ERASE_RETRIES + 1 ∧ wlar1 = wlar[n, wl-entry(m0 + m, stat)]

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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