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Proof step 1 from proof unmodified-sorted-node (conclusion)

⊦ iast[adr] = indexnode(brar, bv0, m) ∧ nused < BRANCH_SIZE ∧ BRANCH_SIZE = # zbrar ∧ unmodified(adr, mkznode(rp, zbrar, bv1, false, nused + 1), iast) → (sorted(load(brar, 0, nused + 1), 0, nused) ↔ sorted(zbrar, 0, nused))

System applied rule normalize

And obtained the following new goals

Proof step 2:
BRANCH_SIZE = # zbrar, iast[adr] = indexnode(brar, bv0, m), nused < BRANCH_SIZE, unmodified(adr, mkznode(rp, zbrar, bv1, false, nused + 1), iast) ⊦ sorted(load(brar, 0, nused + 1), 0, nused) ↔ sorted(zbrar, 0, nused)

Proof step 1 from proof unmodified-sorted-node (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

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