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Proof step 16 from proof crash-neutral-write-data (previous step)

apebs[n] = mkpeb(aehdr, avhdr, buf0, m, false), apebs0 = apebs, avhdr.valid?, aehdr.valid?, n < # apebs, is-aligned(n4, EB_PAGE_SIZE), is-aligned(n5, EB_PAGE_SIZE), ubi-io-inv(apebs), n1 + n4 ≤ # buf, n5 + n4 ≤ LEB_SIZE, m ≤ n5 ⊦ ∃ n2. ((n2 < n4 ∨ n2 = 0 ∧ n4 = 0) ∧ is-aligned(n2, EB_PAGE_SIZE)) ∧ ⟨if n2 ≠ 0 then apebs[n] := mkpeb (apebs[n].echdr, apebs[n].vidhdr, subarray(apebs[n].data, 0, n5) + subarray(buf, n1, n2) + mkempbuf(LEB_SIZE - n5 - n2), n5 + n2, apebs[n].bad)⟩ (apebs0 = apebs)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 17:
apebs[n] = mkpeb(aehdr, avhdr, buf0, m, false), apebs0 = apebs, aehdr.valid?, avhdr.valid?, n < # apebs, is-aligned(n5, EB_PAGE_SIZE), is-aligned(n4, EB_PAGE_SIZE), ubi-io-inv(apebs), m ≤ n5, n5 + n4 ≤ LEB_SIZE, n1 + n4 ≤ # buf ⊦ ∃ n0. (n0 < n4 ∨ n0 = 0 ∧ n4 = 0) ∧ is-aligned(n0, EB_PAGE_SIZE) ∧ ⟨if n0 ≠ 0 then apebs[n] := mkpeb (apebs[n].echdr, apebs[n].vidhdr, subarray(apebs[n].data, 0, n5) + subarray(buf, n1, n0) + mkempbuf(LEB_SIZE - n5 - n0), n5 + n0, apebs[n].bad)⟩ (apebs0 = apebs)

Proof step 16 from proof crash-neutral-write-data (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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