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Proof step 15 from proof inv-read (previous step)

m6 + # lpt = # avol, avol[0] = mapped(buf1), avol[m3] = mapped(buf2), avol[m2] = mapped(buf3), avol[m6 + m8] = mapped(buf4), err0 = ESUCCESS, 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, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪buf := copy(avol[m6 + m8].data + mkempbuf(LEB_SIZE - # avol[m6 + m8].data), m7, buf, n2, n1)⟫ true

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 16:
m6 + # lpt = # avol, avol[m6 + m8] = mapped(buf4), avol[m2] = mapped(buf3), avol[m3] = mapped(buf2), avol[0] = mapped(buf1), err0 = ESUCCESS, m8 < # lpt, disk-layout(mksb(adr, m1, m2, m3, m4, m5, m6), # lpt), ebm-vol-inv(avol), is-encoded(mksb(adr, m1, m2, m3, m4, m5, m6), buf1), is-encoded(lpt, lebs(avol, m5, lptlebs(# lpt, LEB_SIZE))), is-encoded(log, buf3), is-encoded-pad(orphans, m4, buf2), mapped-full?(avol, m5, lptlebs(# lpt, LEB_SIZE)), m7 + n1 ≤ LEB_SIZE, n2 + n1 ≤ # buf, logoff ≠ LEB_SIZE → # buf3 = logoff, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ (m7 + n1 ≤ #(avol[m6 + m8].data + mkempbuf(LEB_SIZE - # avol[m6 + m8].data)) ∧ n2 + n1 ≤ # buf) ∧ (avol[m6 + m8].mapped? ∧ m6 + m8 < # avol) ∧ LEB_SIZE ≥ # avol[m6 + m8].data ∧ avol[m6 + m8].mapped? ∧ m6 + m8 < # avol

Proof step 15 from proof inv-read (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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