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Proof step 204 from proof inv-format (previous step)

# buf1 = LEB_SIZE, # wlar = # apebs1, apebs1[vtblpnum2] = mkpeb(aehdr, empty, buf0, m, false), aehdr.valid?, vtblpnum2 < # apebs1, is-encoded(∅, buf1), ubi-io-initial(apebs1), ubi-io-inv(apebs1[vtblpnum2, mkpeb(aehdr, avidhdr(VTBL_VOLID, VTBL_LNUM, 0, 0, 0), buf0, m, false)]), ENCODED_NAT_SIZE ≤ LEB_SIZE, ∀ n3. n3 < # apebs1 → (apebs1[n3].bad → wlar[n3] = wl-entry(0, erroneous)) ∧ (¬ apebs1[n3].bad → apebs1[n3].echdr.valid? ∧ wlar[n3] = wl-entry(apebs1[n3].echdr.ec, free) ∧ apebs1[n3].vidhdr = empty) ⊦ m = 0, vtblpnum2 = # apebs1

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 205:
⊦ ubi-io-initial(apebs) ↔ (∀ n. n < # apebs → ubi-io-peb-initial(apebs[n]))
Proof step 206:
# wlar = # apebs1, # buf1 = LEB_SIZE, apebs1[vtblpnum2] = mkpeb(aehdr, empty, buf0, m, false), aehdr.valid?, vtblpnum2 < # apebs1, is-encoded(∅, buf1), ubi-io-inv(apebs1[vtblpnum2, mkpeb(aehdr, avidhdr(VTBL_VOLID, VTBL_LNUM, 0, 0, 0), buf0, m, false)]), ENCODED_NAT_SIZE ≤ LEB_SIZE, ∀ n3. n3 < # apebs1 → (apebs1[n3].bad → wlar[n3] = wl-entry(0, erroneous)) ∧ (¬ apebs1[n3].bad → apebs1[n3].echdr.valid? ∧ wlar[n3] = wl-entry(apebs1[n3].echdr.ec, free) ∧ apebs1[n3].vidhdr = empty), ∀ n. n < # apebs1 → ubi-io-peb-initial(apebs1[n]) ⊦ m = 0, vtblpnum2 = # apebs1

Rule argument

spec: ubi-io-inv name: initial seq: ⊦ ubi-io-initial(apebs) ↔ (∀ n. n < # apebs → ubi-io-peb-initial(apebs[n])) subst: [apebs] → [apebs1] flags: <all paths>

Additional information

Used terms: apebs1