Abstract
At the end of the previous chapter, we charged the reader with an impossible task, viz. to prove, with the Core rules of the Owicki/Gries theory, that the little multiprogram
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Pre: x = 0
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A: x = x + 1
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B: x = x + 1
establishes postcondition x = 2. This impossibility, which we shall prove in a moment, is really disturbing, first, because from an operational point of view it is absolutely obvious that the final state satisfies x = 2, and, second, because it makes us wonder how many other surprises there are in store for us. (To reassure the reader, things will turn out reasonably well.)
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© 1999 Springer Science+Business Media New York
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Feijen, W.H.J., van Gasteren, A.J.M. (1999). Two Disturbing Divergences. In: On a Method of Multiprogramming. Monographs in Computer Science. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-3126-2_4
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DOI: https://doi.org/10.1007/978-1-4757-3126-2_4
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4419-3179-5
Online ISBN: 978-1-4757-3126-2
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