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Proof step 4 from proof prepost-read-orphans (previous step)

m4 + # lpt = # avol, avol[0] = mapped(buf), avol[m1] = mapped(buf0), avol[m0] = mapped(buf1), sb = mksb(adr, m, m0, m1, m2, m3, m4), disk-layout(sb, # lpt), ebm-vol-inv(avol), is-encoded(log, buf1), is-encoded(lpt, lebs(avol, m3, lptlebs(# lpt, LEB_SIZE))), is-encoded(sb, buf), is-encoded-pad(orphans0, m2, buf0), mapped-full?(avol, m3, lptlebs(# lpt, LEB_SIZE)), logoff ≠ LEB_SIZE → # buf1 = logoff ⊦ ⟪persistence_io_read_orphans#(sb, avol; orphans; err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → orphans = orphans0))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
m4 + # lpt = # avol, avol[m0] = mapped(buf1), avol[m1] = mapped(buf0), avol[0] = mapped(buf), disk-layout(mksb(adr, m, m0, m1, m2, m3, m4), # lpt), ebm-vol-inv(avol), is-encoded(mksb(adr, m, m0, m1, m2, m3, m4), buf), is-encoded(lpt, lebs(avol, m3, lptlebs(# lpt, LEB_SIZE))), is-encoded(log, buf1), is-encoded-pad(orphans0, m2, buf0), mapped-full?(avol, m3, lptlebs(# lpt, LEB_SIZE)), logoff ≠ LEB_SIZE → # buf1 = logoff ⊦ ⟪persistence_io_read_orphans#(mksb(adr, m, m0, m1, m2, m3, m4), avol; orphans; err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → orphans = orphans0))

Proof step 4 from proof prepost-read-orphans (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information