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Proof step 52 from proof refine-read-echdr (previous step)

pebs[m2] = mkpeb(buf1, m, false), apebs[m2] = mkpeb(aehdr1, avhdr, buf0, m1, false), subarray(buf1, 0, EB_PAGE_SIZE) ≠ emptypage, m2 < # apebs, m2 < # pebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, m, false), mkpeb(aehdr1, avhdr, buf0, m1, false)), is-encoded(ehdr, subarray(buf1, 0, EB_PAGE_SIZE)), mtd-cons(pebs), ubi-io-inv(apebs), EB_PAGE_SIZE ≤ PEB_SIZE ⊦ ⟨aubi_io_read_echdr#(m2, apebs; aehdr0; isbad, err0)⟩ (aechdr(ehdr.ec) = aehdr0 ∧ (bitflips ↔ isbad) ∧ ESUCCESS = err0)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 53:
apebs[m2] = mkpeb(aehdr1, avhdr, buf0, m1, false), pebs[m2] = mkpeb(buf1, m, false), ehdr = echdr(m0), m2 < # pebs, m2 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, m, false), mkpeb(aehdr1, avhdr, buf0, m1, false)), is-encoded(ehdr, subarray(buf1, 0, EB_PAGE_SIZE)), mtd-cons(pebs), ubi-io-inv(apebs), EB_PAGE_SIZE ≤ PEB_SIZE ⊦ ⟨aubi_io_read_echdr#(m2, apebs; aehdr0; isbad, err0)⟩ (aechdr(m0) = aehdr0 ∧ (bitflips ↔ isbad) ∧ ESUCCESS = err0), subarray(buf1, 0, EB_PAGE_SIZE) = emptypage

Rule argument

spec: echeader name: elim seq: ⊦ m = ehdr.ec ↔ ehdr = echdr(m) subst: [ehdr, m] → [ehdr, m2]

Additional information

Used simplifier rules: ⊦ m = ehdr.ec ↔ ehdr = echdr(m); (elim) Used terms: ehdr, m2