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Theorem datasize-subarray

⊦ m0 + m1 = # buf → datasize(subarray(buf, m0, m1)) = (datasize(buf) ≤ m0 ⊃ 0;datasize(buf) - m0)

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: 1
Proof steps: 3
Used lemmas: datasize-subarray-h, datasize,
Used spec theorems:
- Used simplifier rules:
  - array-copy/buffer/size-subarray
  - nat/ler