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Theorem nonnullrefs-append

⊦ (vals + vals0) .nonnullrefs = vals .nonnullrefs + vals0 .nonnullrefs

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: nonnullrefs-dups-firstoc, nonnullrefs-in-firstoc, nonnullrefs-null, nonnullrefs-one,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 9
Used lemmas: nonnullrefs-yes, nonnullrefs-no, nonnullrefs-empty,
Used spec theorems:
- Used simplifier rules:
  - javavalue/test-19
  - javavalue/elim-13
  - list/references/app-01
  - list/references/c
  - list/javavalues/c
  - list/javavalues/Nil
  - list/javavalues/a
  - list/references/Nil
  - list/references/a