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Theorem validsubset-trans

⊦ valid⊆(str, st, st0) ∧ valid⊆(str, st0, st1) → valid⊆(str, st, st1)

Type: A user defined theorem
Validity: The proof is valid.
Features: localforward, forward,
Comment:
Used by: validsubset-addclass-01, validsubset-addobj-02, validsubset-predefined-01,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 9
Proof steps: 22
Used lemmas: validref-runtimetype, validref-junkref, validsubset-def,
Used spec theorems:
- Used simplifier rules: