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Proof step 1 from proof subarray-elim (conclusion)

⊦ n + m ≤ # ar → (ar1 = subarray(ar, n, m) ↔ (∃ ar0, ar2. ar = ar0 + ar1 + ar2 ∧ # ar0 = n ∧ # ar1 = m))

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information