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Proof step 2 from proof ccd-no-read-up (conclusion)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
observe(domvar, CreditCardCenter-ccd, mkCreditCardCenter(n)) ⊦ domvar = User, domvar = User->User_Airline, domvar = Abort9

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDSEQ : dominterference, , User-interference-def, ⊦ User ⇒ domvar ↔ domvar = User ∨ domvar = User->User_Airline ∨ domvar = Abort9], [CSIMPNAMEDSEQ : domdefinitions, , dom-ccd, ⊦ dom (CreditCardCenter-ccd, mkCreditCardCenter(n)) = User])]]