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

avol[m0] = mapped(buf), sb = mksb(adr, m, m0, m1, m2, m3, m4), m0 < # avol, ebm-vol-inv(avol), is-encoded(log0, buf) ⊦ ⟪persistence_io_read_log#(sb, EB_PAGE_SIZE, LEB_SIZE, avol; logoff; log, err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → log = log0))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
avol[m0] = mapped(buf), m0 < # avol, ebm-vol-inv(avol), is-encoded(log0, buf) ⊦ ⟪persistence_io_read_log#(mksb(adr, m, m0, m1, m2, m3, m4), EB_PAGE_SIZE, LEB_SIZE, avol; logoff; log, err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → log = log0))

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information