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Proof step 1 from proof prepost-read-log (conclusion)

ebm-vol-inv(avol), sb.log < # avol, avol[sb.log].mapped?, is-encoded(log0, avol[sb.log].data) ⊦ ⟪persistence_io_read_log#(sb, EB_PAGE_SIZE, LEB_SIZE, avol; logoff; log, err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → log = log0))

System applied rule normalize

And obtained the following new goals

Proof step 2:
avol[sb.log].mapped?, sb.log < # avol, ebm-vol-inv(avol), is-encoded(log0, avol[sb.log].data) ⊦ ⟪persistence_io_read_log#(sb, EB_PAGE_SIZE, LEB_SIZE, avol; logoff; log, err)⟫ ((err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → log = log0))

Proof step 1 from proof prepost-read-log (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information