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Proof step 7 from proof no-write-down-follows (previous step)

alter(nam, d), ∀ d. d ⇒ d ⊦ d ⇒ cdom(nam)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ alter(nam, d) ∧ observe(nam, d0) → d ⇒ d0

Rule argument

[x0lemmaarg: spec-name: AccessControl instance-name: lemma-name: alter-observe-respects-policy antecedent: succedent: alter(nam, d) ∧ observe(nam, d0) → d ⇒ d0 substlist: [nam, d0, d] → [nam, cdom(nam), d] add preconditions?: F is rewrite lemma?: T current spec?: F rotate lemma?: F replace all?: T paths: ((1, 0, 0)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (nam, cdom(nam), d)]]