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Proof step 45 from proof refine-write (previous step)

# avol0 = # lpt + m6, avol0[m6 + m8] = mapped(buf0), avol0[0] = mapped(buf1), avol0[m3] = mapped(buf2), avol0[m2] = mapped(buf3), avol = avol0, err = err0, err = ESUCCESS, n = 0, m8 < # lpt, disk-layout(mksb(adr, m1, m2, m3, m4, m5, m6), # lpt), ebm-vol-inv(subarray(avol0, m6, # lpt)), ebm-vol-inv(avol0), is-aligned(m7, EB_PAGE_SIZE), is-aligned(n, EB_PAGE_SIZE), is-encoded(mksb(adr, m1, m2, m3, m4, m5, m6), buf1), is-encoded(lpt, lebs(avol0, m5, lptlebs(# lpt, LEB_SIZE))), is-encoded(log, buf3), is-encoded-pad(orphans, m4, buf2), mapped-full?(avol0, m5, lptlebs(# lpt, LEB_SIZE)), m7 + n ≤ LEB_SIZE, m6 ≤ # avol0, # buf0 ≤ m7, n2 + n ≤ # buf, logoff ≠ LEB_SIZE → # buf3 = logoff, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪skip⟫ ⟨avol1 := subarray(avol0, m6, # lpt); apersistence_io_write#(m8, m7, n2, n, buf, adr, m1, log, lpt, orphans; avol1; err1)⟩ ( # avol = m6 + (# avol - m6) ∧ avol1 = subarray(avol, m6, # avol - m6) ∧ is-encoded(log, avol[m2].data) ∧ is-encoded(lpt, lebs(avol, m5, lptlebs(# avol - m6, LEB_SIZE))) ∧ is-encoded-pad(orphans, m4, avol[m3].data) ∧ err = err1)

Heuristic symbolic execution applied rule skip right

And obtained the following new goals

Rule argument

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