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Proof step 37 from proof valid-peb-write-valid-peb (previous step)

LEB_SIZE = n1 + m0, LEB_SIZE = n0 + m, apebs[n] = mkpeb(aehdr, avidhdr(v, m2, m4, m3, checksum(subarray(buf, 0, m0), m3)), subarray(buf, 0, m0) + mkempbuf(n1), m, false), subarray(subarray(buf, 0, m0) + mkempbuf(n1), m, n0) = mkempbuf(n0), aehdr.valid?, n < # apebs, is-aligned(m, EB_PAGE_SIZE), m3 ≤ datasize(subarray(buf, 0, m0)), m ≤ LEB_SIZE, m0 ≤ LEB_SIZE, m ≤ m0, m3 ≤ m0, m3 ≤ LEB_SIZE ⊦ aehdr = empty, m3 = 0, m3 ≤ (datasize(buf1) = 0 ⊃ datasize(subarray(buf, 0, m0), m0);m0 + datasize(buf1)) ∧ checksum(subarray(buf, 0, m0) + mkempbuf(n1), m3) = checksum(subarray(buf, 0, m0) + buf1, m3)

Heuristic if-then-else split applied rule case distinction

And obtained the following new goals

Rule argument

pos: right 3

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