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Proof step 18 from proof abs-nodes-nospace-header-h (previous step)

lax.head = @(m0, m1), # buf1 + # buf0 < 2 * NODE_HEADER_SIZE + align↑(m, 2 * NODE_HEADER_SIZE), is-encoded(nodeheader(m, boolvar0), subarray(buf1 + buf0, 0, NODE_HEADER_SIZE)), NODE_HEADER_SIZE ≤ # buf1 + # buf0, abs-padding(buf1) ∧ abs-nodes(buf0, n + # buf1, nd ' + x0, lax, weak) ∨ lax ≠ [] ∧ m0 = n ∧ m1 = # buf1 ∧ abs-node(buf1, nd) ∧ abs-nodes(buf0, n + # buf1, x0, lax.tail, weak) ⊦

User applied rule case distinction

And obtained the following new goals

Proof step 19:
lax.head = @(m0, m1), # buf1 + # buf0 < 2 * NODE_HEADER_SIZE + align↑(m, 2 * NODE_HEADER_SIZE), abs-nodes(buf0, n + # buf1, nd ' + x0, lax, weak), abs-padding(buf1), is-encoded(nodeheader(m, boolvar0), subarray(buf1 + buf0, 0, NODE_HEADER_SIZE)), NODE_HEADER_SIZE ≤ # buf1 + # buf0 ⊦
Proof step 22:
lax.head = @(m0, m1), m0 = n, m1 = # buf1, # buf1 + # buf0 < 2 * NODE_HEADER_SIZE + align↑(m, 2 * NODE_HEADER_SIZE), abs-node(buf1, nd), abs-nodes(buf0, n + # buf1, x0, lax.tail, weak), is-encoded(nodeheader(m, boolvar0), subarray(buf1 + buf0, 0, NODE_HEADER_SIZE)), NODE_HEADER_SIZE ≤ # buf1 + # buf0 ⊦ lax = []

Rule argument

pos: left 5

Proof step 18 from proof abs-nodes-nospace-header-h (previous step)

User applied rule case distinction

And obtained the following new goals

Rule argument

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