Question regarding B method refinement

[zakiahzu...@gmail.com]

Hi,
In general, I have two machines, X and Y. Y is the improvement of X.
Y uses the same invariants, operations and variables as X, and with some additional operation and variables.
But, I have implemented Y as another machine (.mch) and not as a refinement(.ref) of X.
Is it still correct if I say that Y is the improvement of X although I not implement it as a refinement of X ?


Thank you.

[Michael Leuschel]

Hi,

I am not sure I understand the question.

If you want to check that Y is a refinement of X you should make it a refinement machine of X.

If you have separate machines X and Y, you could try and do a trace refinement check using ProB, but this is not “official” B refinement.

Best regards,

Michael

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