Download A Roadmap for Formal Property Verification by Pallab Dasgupta PDF

By Pallab Dasgupta

Integrating formal estate verification (FPV) into an current layout method increases a number of fascinating questions. Have I written sufficient homes? Have I written a constant set of houses? What may still I do while the FPV device runs into ability concerns? This publication develops the solutions to those questions and matches them right into a roadmap for formal estate verification – a roadmap that exhibits the way to glue FPV know-how into the conventional validation circulate. A Roadmap for Formal estate Verification explores the foremost matters during this strong expertise via uncomplicated examples – you don't need any historical past on formal how you can learn so much elements of this book.

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Each DATA cycle is of unit cycle duration. 52 2 Languages for Temporal Properties Let us start by coding these properties directly in SVA. req ; endproperty The predicate $rose(gnt) is true in a cycle if the signal gnt rose in that cycle. The triggering condition for the second property is that the master must be in the ADDRESS cycle. How do we express that the master is in the ADDRESS cycle? This is a non-trivial question. rdy, x = DADDR) |− > ##1 (x == DADDR) ; endproperty The property says that the address lines must remain stable when the master has control of the bus (given that req and gnt are high), but the slave is not ready (that is, rdy is low).

For example, suppose a slave splits a burst transfer when it becomes non-available during the ongoing transfer, and we wish to abort a transaction if more than two splits occur during the transaction. The property may be expressed in SVA as: split [*->2] ##1 abort The two split events may not be consecutive. The abort event occurs one cycle after the second split event. The sequence, p [*->5] ##1 q, matches at time t, if q matches at time t, and p matches 5 times before time t, including one at time t − 1.

The problem with understanding formal semantics is that they are replete with terse notations. It is widely suspected that the intimidating nature of the notations used in existing literature on formal property verification is one of the main deterants to its wider adoption in practice. In reality, the formal semantics of the temporal operators do not convey anything more than what we have discussed already. Nevertheless it is worthwhile to present the formal semantics, not only for the sake of completeness, but also to familiarize ourselves with the notations that appear in almost all texts on formal property verification, including some chapters of this book.

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