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Proof step 1 from proof inv-read (conclusion)

ebm-vol-inv(avol), # lpt = # avol, m < # avol, avol[m].mapped?, n + n0 ≤ # buf, m0 + n0 ≤ LEB_SIZE ⊦ ⟪apersistence_io_read#(m, m0, n, n0, adr, m1, plog, avol, lpt, ns; buf; err)⟫ true

System applied rule normalize

And obtained the following new goals

Proof step 2:
# lpt = # avol, avol[m].mapped?, m < # avol, ebm-vol-inv(avol), m0 + n0 ≤ LEB_SIZE, n + n0 ≤ # buf ⊦ ⟪apersistence_io_read#(m, m0, n, n0, adr, m1, plog, avol, lpt, ns; buf; err)⟫ true

Proof step 1 from proof inv-read (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information