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Proof step 2 from proof ccd-no-write-down (conclusion)

⊦ alter(domvar, CreditCardCenter-ccd, mkCreditCardCenter(n)) → domvar ⇒ dom(CreditCardCenter-ccd, mkCreditCardCenter(n))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
alter(domvar, CreditCardCenter-ccd, mkCreditCardCenter(n)) ⊦ domvar ⇒ User

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDSEQ : domdefinitions, , dom-ccd, ⊦ dom (CreditCardCenter-ccd, mkCreditCardCenter(n)) = User])]]