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Proof step 10 from proof abs-nodes-add-crash-aligned (previous step)

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

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 11:
⊦ is-aligned(n, EB_PAGE_SIZE) → is-aligned(n, NODE_HEADER_SIZE)

Rule argument

spec: node-header-size name: is-aligned-pagesize-imp-headersize seq: ⊦ is-aligned(n, EB_PAGE_SIZE) → is-aligned(n, NODE_HEADER_SIZE) subst: [n] → [align↓(# buf0 + # buf1, EB_PAGE_SIZE)] flags: <all paths>

Additional information

Used simplifier rules: ⊦ EB_PAGE_SIZE ≠ 0; (s)%m ≠ 0 ⊦ is-aligned(align↓(n, m), m); (s) Used terms: align↓(# buf0 + # buf1, EB_PAGE_SIZE)