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Proof step 5 from proof abs-nodes-crash (previous step)

abs-nodes(buf, 0, x, lax, true), abs-nodes(buf, 0, x, lax, true) ∧ is-aligned(# buf.align↓, NODE_HEADER_SIZE) ∧ # buf.align↓ ≤ # buf → (∃ x0, lax0. x0 ⊑ x ∧ lax0 ⊑ lax ∧ abs-nodes(subarray(buf, 0, # buf.align↓), 0, x0, lax0, true)) ⊦ ∃ x0, lax0. x0 ⊑ x ∧ lax0 ⊑ lax ∧ abs-nodes(buf.align↓, 0, x0, lax0, true)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
abs-nodes(buf, 0, x, lax, true), is-aligned(# buf.align↓, NODE_HEADER_SIZE) ∧ # buf.align↓ ≤ # buf → x0 ⊑ x ∧ lax0 ⊑ lax ∧ abs-nodes(subarray(buf, 0, # buf.align↓), 0, x0, lax0, true) ⊦ ∃ x0, lax0. x0 ⊑ x ∧ lax0 ⊑ lax ∧ abs-nodes(buf.align↓, 0, x0, lax0, true)

Rule argument

Additional information

Used simplifier rules: abs-nodes-unique-weak-h: ⊦ abs-nodes(buf, m, x0, lax0, true) → (abs-nodes(buf, m, x1, lax1, true) ↔ x0 = x1 ∧ lax0 = lax1);