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Proof step 1 from proof range-eq-validtrailer (conclusion)

⊦ is-aligned(# buf, NODE_HEADER_SIZE) ∧ is-aligned(m, NODE_HEADER_SIZE) → (range=(buf + mkempbuf(n), m, validtrailer, 0, NODE_HEADER_SIZE) ↔ range=(buf, m, validtrailer, 0, NODE_HEADER_SIZE))

System applied rule normalize

And obtained the following new goals

Proof step 2:
is-aligned(# buf, NODE_HEADER_SIZE), is-aligned(m, NODE_HEADER_SIZE) ⊦ range=(buf + mkempbuf(n), m, validtrailer, 0, NODE_HEADER_SIZE) ↔ range=(buf, m, validtrailer, 0, NODE_HEADER_SIZE)

Proof step 1 from proof range-eq-validtrailer (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information