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Proof step 3 from proof abs-nodes-add-crash-aligned (previous step)

# buf1 = a.alignedsize + 2 * NODE_HEADER_SIZE, abs-node(buf1, a), abs-nodes(buf0, 0, x, lax, false) ⊦ abs-nodes((buf0 + buf1).align↓, 0, x + a ', lax + @(# buf0, # buf1) ', boolvar) ↔ is-aligned(# buf0 + # buf1, EB_PAGE_SIZE)

User applied rule case distinction

And obtained the following new goals

Proof step 4:
# buf1 = a.alignedsize + 2 * NODE_HEADER_SIZE, abs-node(buf1, a), abs-nodes(buf0, 0, x, lax, false), abs-nodes((buf0 + buf1).align↓, 0, x + a ', lax + @(# buf0, # buf1) ', boolvar) ⊦ is-aligned(# buf0 + # buf1, EB_PAGE_SIZE)
Proof step 12:
# buf1 = a.alignedsize + 2 * NODE_HEADER_SIZE, abs-node(buf1, a), abs-nodes(buf0, 0, x, lax, false), is-aligned(# buf0 + # buf1, EB_PAGE_SIZE) ⊦ abs-nodes((buf0 + buf1).align↓, 0, x + a ', lax + @(# buf0, # buf1) ', boolvar)

Rule argument

pos: right 1

Proof step 3 from proof abs-nodes-add-crash-aligned (previous step)

User applied rule case distinction

And obtained the following new goals

Rule argument

Additional information