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Proof step 10 from proof inv-write-data (previous step)

apebs[n] = mkpeb(aehdr, avhdr, buf0, m, false), 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, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if err0 = ESUCCESS then apebs[n] := mkpeb (apebs[n].echdr, apebs[n].vidhdr, subarray(apebs[n].data, 0, n5) + subarray(buf, n1, n4) + mkempbuf(LEB_SIZE - n5 - n4), n5 + n4, apebs[n].bad) else choose n2 with (n2 < n4 ∨ n2 = 0 ∧ n4 = 0) ∧ is-aligned(n2, EB_PAGE_SIZE) in 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)⟫ ubi-io-inv(apebs)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

Additional information