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Proof step 6 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)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
# buf1 = a.alignedsize + 2 * NODE_HEADER_SIZE, abs-node(buf1, a), abs-nodes(buf0, 0, x, lax, false), abs-nodes(subarray(buf0 + buf1, 0, align↓(# buf0 + # buf1, EB_PAGE_SIZE)), 0, x + a ', lax + @(# buf0, # buf1) ', boolvar) ⊦ is-aligned(# buf0 + # buf1, EB_PAGE_SIZE)

Rule argument

Additional information

Used simplifier rules: append-a: ⊦ (buf + buf0) + buf1 = buf + buf0 + buf1; from specification array-splice[buffer]% ⊦ #(buf + buf0) = # buf + # buf0; (s)