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Theorem path-butlast

⊦ path(r ' + x + r0 ', h) → (path(r ' + x, h) ↔ true)

Type: A user defined theorem
Validity: The proof is valid.
Features: ss, lss,
Comment:
Used by: path-prelast, rem-stays-reachable-aux1, rem-stays-reachable-aux2,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 5
Used lemmas: path-prefix, path-cons, path-one, path-two,
Used spec theorems:
- Used simplifier rules:
  - list/Nil
  - list/app
  - list/a
  - list/c