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Proof step 1 from proof abs-nodes-add-crash-aligned (conclusion)

⊦ abs-nodes(buf0, x, lax, false) ∧ abs-node(buf1, a) → (abs-nodes((buf0 + buf1).align↓, x + a ', lax + @(# buf0, a.flashsize) ', boolvar) ↔ is-aligned(# buf0 + # buf1, EB_PAGE_SIZE))

System applied rule normalize

And obtained the following new goals

Proof step 2:
abs-node(buf1, a), abs-nodes(buf0, x, lax, false) ⊦ abs-nodes((buf0 + buf1).align↓, x + a ', lax + @(# buf0, a.flashsize) ', boolvar) ↔ is-aligned(# buf0 + # buf1, EB_PAGE_SIZE)

Proof step 1 from proof abs-nodes-add-crash-aligned (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information