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Theorem junkref-subset

⊦ ¬ junkref(str, r, st) ∧ st ⊆ st1 → ¬ junkref(str, r, st1)

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: junkref-addarray-02, junkref-union, validref-subset, validrefkeynotnull-subset,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 13
Proof steps: 22
Used lemmas: junkrefs-subset, junkrefs-typein, junkrefs-null-02, junkref-def,
Used spec theorems:
- store/javastore/Subset
Used simplifier rules:
- storefuns/instore-01
- storefunsx/lookup-xtra
- store/javastore/notmemlookup
- list/references/c-08
- list/references/e
- list/references/app-02-ant
- list/references/a
- list/references/e-01
- list/references/c
- list-data/references/elim-list-c