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Proof step 36 from proof refine-sync-erase (previous step)

pebs[m] = mkpeb(buf0, m1, false), apebs[m] = mkpeb(aehdr, avhdr, buf, m0, false), m < # pebs, m < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf0, m1, false), mkpeb(aehdr, avhdr, buf, m0, false)), mtd-cons(pebs), ubi-io-erase-pre(m, apebs), ubi-io-inv(apebs), ⌊err0⌋ ⊦ ⟨fail_or_success#(; ; err); if err = ESUCCESS then apebs[m] := mkpeb(empty, empty, mkempbuf(LEB_SIZE), 0, false) else {choose apeb with ubi-io-peb-inv(apeb) ∧ ¬ apeb.bad ∧ ¬ apeb.vidhdr.valid? in apebs[m] := apeb or skip}⟩ (abs(pebs, apebs) ∧ err0 = err)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 37:
pebs[m] = mkpeb(buf0, m1, false), apebs[m] = mkpeb(aehdr, avhdr, buf, m0, false), m < # pebs, m < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf0, m1, false), mkpeb(aehdr, avhdr, buf, m0, false)), mtd-cons(pebs), ubi-io-inv(apebs), ⌊err0⌋ ⊦ ⟨fail_or_success#(; ; err); if err = ESUCCESS then apebs[m] := mkpeb(empty, empty, mkempbuf(LEB_SIZE), 0, false) else {choose apeb with ubi-io-peb-inv(apeb) ∧ ¬ apeb.bad ∧ ¬ apeb.vidhdr.valid? in apebs[m] := apeb or skip}⟩ (abs(pebs, apebs) ∧ err0 = err)

Rule argument

Additional information

Used simplifier rules: ⊦ mkpeb(aehdr, avhdr, buf, m, boolvar).bad ↔ boolvar; (s)% ⊦ ubi-io-erase-pre(n, apebs) ↔ n < # apebs ∧ ¬ apebs[n].bad; (s)