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Proof step 41 from proof refine-write-vidhdr (previous step)

# buf2 = EB_PAGE_SIZE, apebs[m2] = mkpeb(aehdr, empty, buf0, m1, false), pebs[m2] = mkpeb(buf1, EB_PAGE_SIZE, false), err = ESUCCESS, aehdr.valid?, m2 < # pebs, m2 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, EB_PAGE_SIZE, false), mkpeb(aehdr, empty, buf0, m1, false)), is-encoded(vidhdr(v, m6, m5, m3, m4), buf2), mtd-cons(pebs), ubi-io-inv(apebs), 2 * EB_PAGE_SIZE ≤ PEB_SIZE ⊦ abs (pebs[m2, (pebs[m2].data:= copy(buf2, 0, pebs[m2].data, EB_PAGE_SIZE, EB_PAGE_SIZE)).fill:= (2 * EB_PAGE_SIZE)], apebs[m2, apebs[m2].vidhdr:= avidhdr(v, m6, m5, m3, m4)]) ∧ ESUCCESS = err

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 42:
# buf2 = EB_PAGE_SIZE, apebs[m2] = mkpeb(aehdr, empty, buf0, m1, false), pebs[m2] = mkpeb(buf1, EB_PAGE_SIZE, false), aehdr.valid?, m2 < # pebs, m2 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, EB_PAGE_SIZE, false), mkpeb(aehdr, empty, buf0, m1, false)), is-encoded(vidhdr(v, m6, m5, m3, m4), buf2), mtd-cons(pebs), ubi-io-inv(apebs), 2 * EB_PAGE_SIZE ≤ PEB_SIZE ⊦ abs-peb(mkpeb(copy(buf2, 0, buf1, EB_PAGE_SIZE, EB_PAGE_SIZE), 2 * EB_PAGE_SIZE, false), mkpeb(aehdr, avidhdr(v, m6, m5, m3, m4), buf0, m1, false))

Rule argument

Additional information

Used simplifier rules: ⊦ mkpeb(aehdr, avhdr, buf, m, boolvar).vidhdr:= avhdr0 = mkpeb(aehdr, avhdr0, buf, m, boolvar); (s)% ⊦ mkpeb(buf, m, boolvar).fill:= m0 = mkpeb(buf, m0, boolvar); (s)% ⊦ mkpeb(buf, m, boolvar).data:= buf0 = mkpeb(buf0, m, boolvar); (s)% ⊦ mkpeb(buf, m, boolvar).data = buf; (s)%⊦ n < # apebs ∧ abs(pebs, apebs) ∧ ubi-io-inv(apebs) → ( abs(pebs[n, peb], apebs[n, apeb]) ↔ abs-peb(pebs[n], apebs[n]) → abs-peb(peb, apeb)); (ss)