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Proof step 54 from proof refine-read-vidhdr (previous step)

pebs[m2] = mkpeb(buf1, m, false), apebs[m2] = mkpeb(aehdr, avhdr1, buf0, m1, false), subarray(buf1, EB_PAGE_SIZE, EB_PAGE_SIZE) ≠ emptypage, m2 < # apebs, m2 < # pebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, m, false), mkpeb(aehdr, avhdr1, buf0, m1, false)), is-encoded(vidhdr(v, m0, m3, m4, m5), subarray(buf1, EB_PAGE_SIZE, EB_PAGE_SIZE)), mtd-cons(pebs), ubi-io-inv(apebs), 2 * EB_PAGE_SIZE ≤ PEB_SIZE ⊦ ⟨aubi_io_read_vidhdr#(m2, apebs; avhdr0; isbad, err0)⟩ (avidhdr(v, m0, m3, m4, m5) = avhdr0 ∧ (bitflips ↔ isbad) ∧ ESUCCESS = err0)

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 55:
apebs[m2] = mkpeb(aehdr, avhdr1, buf0, m1, false), pebs[m2] = mkpeb(buf1, m6, false), avhdr = avhdr0, m = m2, m2 < # pebs, m2 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, m6, false), mkpeb(aehdr, avhdr1, buf0, m1, false)), is-encoded(vidhdr(v, m0, m3, m4, m5), subarray(buf1, EB_PAGE_SIZE, EB_PAGE_SIZE)), mtd-cons(pebs), ubi-io-inv(apebs), 2 * EB_PAGE_SIZE ≤ PEB_SIZE ⊦ ⟨if ubi-io-read-vidhdr-pre(m, apebs) then {fail_or_success#(; ; err); bitflips := ?; if err = ESUCCESS then avhdr := apebs[m].vidhdr else avhdr := ?} else abort⟩ (avidhdr(v, m0, m3, m4, m5) = avhdr ∧ (bitflips0 ↔ bitflips) ∧ ESUCCESS = err), subarray(buf1, EB_PAGE_SIZE, EB_PAGE_SIZE) = emptypage

Rule argument

pos: right 1

Additional information

Used simplifier rules: aubi_io_read_vidhdr#(PNUM, APEBS; AVHDR; BITFLIPS, ERR) {if ubi-io-read-vidhdr-pre(PNUM, APEBS) then {fail_or_success#(; ; ERR); BITFLIPS := ?; if ERR = ESUCCESS then AVHDR := APEBS[PNUM].vidhdr else AVHDR := ?} else abort };