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Proof step 22 from proof abs-nodes-nospace-h (previous step)

lax.head = @(m0, m1), # buf1 + # buf0 < NODE_HEADER_SIZE, (∃ buf0, buf2. buf1 = buf0 + buf2 + validtrailer ∧ is-encoded(nodeheader(# buf2, true), buf0) ∧ is-aligned(# buf2, 2 * NODE_HEADER_SIZE)) ∧ abs-nodes(buf0, m + # buf1, nd ' + x0, lax, boolvar) ∨ lax ≠ [] ∧ m0 = m ∧ m1 = # buf + # buf2 + NODE_HEADER_SIZE ∧ buf1 = buf + buf2 + validtrailer ∧ is-encoded(nodeheader(node-size-headerless(nd), false), buf) ∧ is-encoded(nd, buf2) ∧ # buf2 = nd.alignedsize ∧ abs-nodes(buf0, m + # buf + # buf2 + NODE_HEADER_SIZE, x0, lax.tail, boolvar) ⊦

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 23:
lax.head = @(m0, m1), # buf1 + # buf0 < NODE_HEADER_SIZE, buf1 = buf3 + buf4 + validtrailer ∧ is-encoded(nodeheader(# buf4, true), buf3) ∧ is-aligned(# buf4, 2 * NODE_HEADER_SIZE) ∧ abs-nodes(buf0, m + # buf3 + # buf4 + NODE_HEADER_SIZE, nd ' + x0, lax, boolvar) ∨ lax ≠ [] ∧ m0 = m ∧ m1 = # buf + # buf2 + NODE_HEADER_SIZE ∧ buf1 = buf + buf2 + validtrailer ∧ is-encoded(nodeheader(node-size-headerless(nd), false), buf) ∧ is-encoded(nd, buf2) ∧ # buf2 = nd.alignedsize ∧ abs-nodes(buf0, m + # buf + # buf2 + NODE_HEADER_SIZE, x0, lax.tail, boolvar) ⊦

Rule argument

Additional information

Used simplifier rules: a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic%append-a: ⊦ (buf + buf0) + buf1 = buf + buf0 + buf1; from specification array-splice[buffer]% ⊦ # validtrailer = NODE_HEADER_SIZE; (s)% ⊦ #(buf + buf0) = # buf + # buf0; (s)