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Theorem subarray-split-first

⊦ n1 ≠ 0 ∧ n0 + n1 ≤ # ar → subarray(ar, n0, n1) = mkarray(1)[0, ar[n0]] + subarray(ar, n0 + 1, n1 - 1)

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes

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Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 13
Used lemmas: append-at2, append-at1, append-a, append-len,
Used spec theorems:
- array/Extension
- array-copy/subarray-at
Used simplifier rules: