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Proof step 29 from proof inv-read (previous step)

m6 + # lpt = # avol, avol[m6 + m8] = mapped(buf0), avol[0] = mapped(buf1), avol[m3] = mapped(buf2), avol[m2] = mapped(buf3), m = m7, m0 = m8, n = n1, n0 = n2, sb = mksb(adr, m1, m2, m3, m4, m5, m6), sb.main + m0 < # avol, m8 < # lpt, disk-layout(mksb(adr, m1, m2, m3, m4, m5, m6), # lpt), ebm-vol-inv(avol), is-encoded(log, buf3), is-encoded(lpt, lebs(avol, m5, lptlebs(# lpt, LEB_SIZE))), is-encoded(mksb(adr, m1, m2, m3, m4, m5, m6), buf1), is-encoded-pad(orphans, m4, buf2), mapped-full?(avol, m5, lptlebs(# lpt, LEB_SIZE)), n2 + n1 ≤ # buf, m7 + n1 ≤ LEB_SIZE, logoff ≠ LEB_SIZE → # buf3 = logoff ⊦ sb.main + m0 < # avol

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

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