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Theorem harness-2

⊦ 〈build#(1 + 3 + 2 + 2 '; to)〉 to = fail

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 69
Used lemmas: build-rec, build,
Used spec theorems:
- Used simplifier rules:
  - treeorfail/sel
  - list/intlist/c-07
  - treeorfail/disj
  - list/intlist/in-17
  - list/intlist/in-append
  - list/intlist/in-14
  - list/intlist/in-15
  - list/intlist/c-08
  - build-base/is-empty
  - list/intlist/e-01
  - list/intlist/a
  - list/intlist/c