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Proof step 1 from proof abs-nodes-emptyheader-h (conclusion)

⊦ isempty(buf, 0, NODE_HEADER_SIZE) → (abs-nodes(buf, m, x, lax, weak) ↔ (# buf = 0 ∨ abs-failed(buf) ∧ weak) ∧ x = [] ∧ lax = [])

System applied rule normalize

And obtained the following new goals

Rule argument

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