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Proof step 17 from proof crash-neutral-read-buf (previous step)

# buf = n0 + n, # lpt = # avol, avol[m3] = mapped(buf0), m3 < # avol, awbuf-inv(avol, bleb), synced(avol0), avol0 ↓ avol, m0 + n ≤ LEB_SIZE ⊦ # buf = n0 + n ∧ range=(buf, n, buf, n, n0) ∧ ⟨buf0 := buf⟩ true

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
# buf = n0 + n, # lpt = # avol, avol[m3] = mapped(buf0), m3 < # avol, awbuf-inv(avol, bleb), synced(avol0), avol0 ↓ avol, m0 + n ≤ LEB_SIZE ⊦ ⟨buf0 := buf⟩ true

Rule argument

Additional information

Used simplifier rules: c: ⊦ m + n = n + m; from specification nat-basic%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic% ⊦ m ≤ m; (s)% ⊦ m + n ≤ m + n0 ↔ n ≤ n0; (s)% ⊦ range=(buf, n, buf, n, m) ↔ n + m ≤ # buf; (s)