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Proof step 74 from proof initial-ex-abstract-initial (previous step)

# buf = PEB_SIZE, m0 + 1 = # pebs, pebs[m0] = mkpeb(buf, EB_PAGE_SIZE, false), abs(subarray(pebs, 0, m0), apebs), is-encoded(echdr(n), subarray(buf, 0, EB_PAGE_SIZE)), range=(buf, EB_PAGE_SIZE, emptypeb, EB_PAGE_SIZE, LEB_SIZE + EB_PAGE_SIZE), ubi-io-initial(apebs), ubi-io-initial(pebs), EB_PAGE_SIZE ≤ PEB_SIZE ⊦ ∃ apebs. abs(pebs, apebs) ∧ ubi-io-initial(apebs)

User applied rule exists right

And obtained the following new goals

Proof step 75:
# buf = PEB_SIZE, m0 + 1 = # pebs, pebs[m0] = mkpeb(buf, EB_PAGE_SIZE, false), abs(subarray(pebs, 0, m0), apebs), is-encoded(echdr(n), subarray(buf, 0, EB_PAGE_SIZE)), range=(buf, EB_PAGE_SIZE, emptypeb, EB_PAGE_SIZE, LEB_SIZE + EB_PAGE_SIZE), ubi-io-initial(pebs), ubi-io-initial(apebs), EB_PAGE_SIZE ≤ PEB_SIZE ⊦ abs(pebs, copy(apebs, 0, mkapebs(# pebs), 0, m0)[m0, mkpeb(aechdr(n), empty, mkempbuf(LEB_SIZE), 0, false)]) ∧ ubi-io-initial(copy(apebs, 0, mkapebs(# pebs), 0, m0)[m0, mkpeb(aechdr(n), empty, mkempbuf(LEB_SIZE), 0, false)])

Rule argument

pos: right 1 terms: copy(apebs, 0, mkapebs(# pebs), 0, m0) [m0, mkpeb(aechdr(n), empty, mkempbuf(LEB_SIZE), 0, false) ] abort: F discard: T computed: F

Additional information

Used terms: copy(apebs, 0, mkapebs(# pebs), 0, m0) [m0, mkpeb(aechdr(n), empty, mkempbuf(LEB_SIZE), 0, false) ]