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Proof step 56 from proof prepost-read-orphans (previous step)

m4 + # lpt = # avol, avol[0] = mapped(buf2), avol[m1] = mapped(buf3), avol[m5] = mapped(buf1), buf = mkbuf(m2 * ENCODED_NAT_SIZE), buf0 = buf, m = 0, m0 = m1, n = m2 * ENCODED_NAT_SIZE, n0 = 0, disk-layout(mksb(adr, m6, m5, m1, m2, m3, m4), # lpt), ebm-vol-inv(avol), is-encoded(log, buf1), is-encoded(lpt, lebs(avol, m3, lptlebs(# lpt, LEB_SIZE))), is-encoded(mksb(adr, m6, m5, m1, m2, m3, m4), buf2), is-encoded-pad(orphans0, m2, buf3), mapped-full?(avol, m3, lptlebs(# lpt, LEB_SIZE)), m0 < # avol → m0 < # avol, logoff ≠ LEB_SIZE → # buf1 = logoff ⊦ ⟪abort; if err = ESUCCESS then persistence_io_decode_orphans#(m2, buf0; ; orphans, err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → orphans = orphans0)), m0 < # avol ∧ avol[m0].mapped? ∧ n0 + n ≤ # buf0 ∧ m + n ≤ LEB_SIZE

Heuristic symbolic execution applied rule abort right

And obtained the following new goals

Proof step 57:
m4 + # lpt = # avol, avol[m5] = mapped(buf1), avol[m1] = mapped(buf3), avol[0] = mapped(buf2), buf = mkbuf(m2 * ENCODED_NAT_SIZE), buf0 = buf, m = 0, m0 = m1, n = m2 * ENCODED_NAT_SIZE, n0 = 0, disk-layout(mksb(adr, m6, m5, m1, m2, m3, m4), # lpt), ebm-vol-inv(avol), is-encoded(mksb(adr, m6, m5, m1, m2, m3, m4), buf2), is-encoded(lpt, lebs(avol, m3, lptlebs(# lpt, LEB_SIZE))), is-encoded(log, buf1), is-encoded-pad(orphans0, m2, buf3), mapped-full?(avol, m3, lptlebs(# lpt, LEB_SIZE)), logoff ≠ LEB_SIZE → # buf1 = logoff, m0 < # avol → m0 < # avol ⊦ m0 < # avol ∧ avol[m0].mapped? ∧ n0 + n ≤ # buf0 ∧ m + n ≤ LEB_SIZE

Proof step 56 from proof prepost-read-orphans (previous step)

Heuristic symbolic execution applied rule abort right

And obtained the following new goals

Rule argument

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