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Proof step 116 from proof refine-write (previous step)

LEB_SIZE = (n5 + n0) + m1, avols[default-volid][m2] = mapped(buf0, n4), avol = abs(avols[default-volid]), n0 < n, m2 < # avols[default-volid], ebm-cons(avols), ebm-vol-inv(abs(avols[default-volid])), is-aligned(n0, EB_PAGE_SIZE), is-aligned(n, EB_PAGE_SIZE), is-aligned(m1, EB_PAGE_SIZE), default-volid ∈ avols, n0 + m1 ≤ LEB_SIZE, n3 + n0 ≤ # buf, n4 ≤ m1, m1 ≤ LEB_SIZE, n4 ≤ LEB_SIZE, n3 + n ≤ # buf, m1 + n ≤ LEB_SIZE, ⌊err1⌋ ⊦ n0 < n ∧ is-aligned(n0, EB_PAGE_SIZE) ∧ ⟨if n0 ≠ 0 then avol[m2] := mapped(avol[m2].data + mkempbuf(m1 - # avol[m2].data) + subarray(buf, n3, n0))⟩ (avol = abs(avols[default-volid][m2, mapped(subarray(avols[default-volid][m2].data, 0, m1) + subarray(buf, n3, n0) + mkempbuf(n5), m1 + n0)])), n0 = 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

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