[Imprint][Data Privacy Statement][E-Mail]

View long theorem info. View the proof. Back to main index. View the specification. View theorem base summary, View theorem base listing, the used properties by spec, the dependency list, the symbol table,

Proof step 69 from proof initial-ex-abstract-initial (previous step)

m0 + 1 = # pebs, pebs[m0] = mkpeb(buf, m, false), abs(subarray(pebs, 0, m0), apebs), ubi-io-initial(apebs), ubi-io-initial(pebs), ubi-io-peb-initial(mkpeb(buf, m, false)) ⊦ ∃ apebs. abs(pebs, apebs) ∧ ubi-io-initial(apebs)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 70:
⊦ ubi-io-peb-initial(peb) ↔ mtd-valid-peb(peb) ∧ (¬ peb.bad → peb.fill = EB_PAGE_SIZE ∧ (∃ n. is-encoded(echdr(n), subarray(peb.data, 0, EB_PAGE_SIZE))))
Proof step 71:
m0 + 1 = # pebs, pebs[m0] = mkpeb(buf, m, false), abs(subarray(pebs, 0, m0), apebs), mtd-valid-peb(mkpeb(buf, m, false)), ubi-io-initial(pebs), ubi-io-initial(apebs), ¬ mkpeb(buf, m, false).bad → mkpeb(buf, m, false).fill = EB_PAGE_SIZE ∧ (∃ n. is-encoded(echdr(n), subarray(mkpeb(buf, m, false).data, 0, EB_PAGE_SIZE))) ⊦ ∃ apebs. abs(pebs, apebs) ∧ ubi-io-initial(apebs)

Rule argument

spec: ubi-io-base name: ubi-io-peb-initial seq: ⊦ ubi-io-peb-initial(peb) ↔ mtd-valid-peb(peb) ∧ ( ¬ peb.bad → peb.fill = EB_PAGE_SIZE ∧ (∃ n. is-encoded (echdr(n), subarray(peb.data, 0, EB_PAGE_SIZE)))) subst: [peb] → [mkpeb(buf, m, false)] flags: <all paths>

Additional information

Used terms: mkpeb(buf, m, false)