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Proof step 9 from proof abs-nodes-nospace-h (previous step)

# buf < NODE_HEADER_SIZE, buf = mkbuf(0) ∧ lax = [] ∨ buf = buf0 + buf1 ∧ (∃ buf2, buf1. buf0 = buf2 + buf1 + validtrailer ∧ is-encoded(nodeheader(# buf1, true), buf2) ∧ is-aligned(# buf1, 2 * NODE_HEADER_SIZE)) ∧ abs-nodes(buf1, m + # buf0, [], lax, boolvar) ⊦ lax = [] ∧ buf = mkbuf(0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
# buf < NODE_HEADER_SIZE, buf = mkbuf(0) ∧ lax = [] ∨ buf = (buf2 + buf3 + validtrailer) + buf1 ∧ buf0 = buf2 + buf3 + validtrailer ∧ is-encoded(nodeheader(# buf3, true), buf2) ∧ is-aligned(# buf3, 2 * NODE_HEADER_SIZE) ∧ abs-nodes(buf1, m + # buf2 + # buf3 + NODE_HEADER_SIZE, [], lax, boolvar) ⊦ lax = [] ∧ buf = mkbuf(0)

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)