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Proof step 43 from proof prepost-write-orphans (previous step)

avol = avol1[n, mapped(mkbuf(0))], err = ESUCCESS, err = err0, n < # avol1, ebm-vol-inv(avol1), ebm-vol-inv(avol1[n, mapped(mkbuf(0))]), is-aligned(# buf0, EB_PAGE_SIZE), is-encoded-pad(orphans0, # orphans0, buf0), # buf0 ≤ LEB_SIZE, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ [if # buf0 ≠ 0 then avol[n] := mapped(avol[n].data + mkempbuf(0 - # avol[n].data) + subarray(buf0, 0, # buf0))] ( ebm-vol-inv(avol) → (err = ESUCCESS ∨ ⌊err⌋ ) ∧ id○(avol, avol1, n) ∧ (err = ESUCCESS → avol[n].mapped? ∧ is-encoded-pad(orphans0, # orphans0, avol[n].data)))

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

pos: right 1

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