RODIN “ Rigorous Open Development Environment for Complex Systems ” RODIN Deliverable
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چکیده
and Concrete Local Witnesses. Witnesses for abstract local variables tM are used in the guard strengthening proof obligation. Witnesses for concrete local variables tN are used in the guard equivalence proof obligation of external events (REF GRD EXT). Derived Witnesses. The user interface could suggest certain invariants and theorems to be global witnesses if they are equations of the form u = E where expression E must be an expression over constants, sets, and variables w of the refined model. This equation could be turned into a global witness by renaming the variables and rewriting the equation into a substitution: u := E ′. The proof obligation generator does not do this. Similarly, the user interface could search for equalities in guards to suggest local witnesses.
منابع مشابه
RODIN “ Rigorous Open Development Environment for Complex Systems ” RODIN Deliverable D 19 Intermediate report on methodology
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One aim of the Rodin project is to contribute formal methods which will underpin the creation of fault-tolerant systems. This intermediate report from WP2 (Methodology) describes progress during the second year of the Rodin project; it also discusses our plans for the final deliverable on methodology. © 2006 University of Newcastle upon Tyne. Printed and published by the University of Newcastle...
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