By Natarajan Shankar (auth.), Lars-Henrik Eriksson, Peter Alexander Lindsay (eds.)

This quantity includes the lawsuits of the 2002 symposium Formal equipment th Europe (FME 2002). The symposium was once the eleven in a chain that all started with a VDM Europe symposium in 1987. The symposia are usually held each 18 months. In 2002 the symposium was once held on the collage of Copenhagen, as a part of the 2002 Federated good judgment convention (FLoC 2002), which introduced - gether in a single occasion seven significant meetings relating to good judgment in desktop technological know-how, in addition to their a?liated workshops, tutorials, and instruments exhibitions. Formal equipment Europe (www.fmeurope.org) is an self sustaining organization which goals to stimulate using, and study on, formal tools for software program improvement. FME symposia were significantly winning in bringing jointly a group of clients, researchers, and builders of particular mathematical - thods for software program improvement. The subject matter of FME 2002 used to be “Formal tools: Getting IT Right”. The double which means was once intentional. at the one hand, the subject stated the signi?cant contribution formal equipment could make to details expertise, through permitting computers to be defined accurately and reasoned approximately with rigour. nonetheless, it well-known that present formal equipment should not ideal, and additional examine and perform are required to enhance their foundations, applicability, and e?ectiveness.

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Extra info for FME 2002:Formal Methods—Getting IT Right: International Symposium of Formal Methods Europe Copenhagen, Denmark, July 22–24, 2002 Proceedings

Sample text

In statement coverage, the coverage model is composed of a goal for each statement which can be satisfied by a test whose control passes through that statement. Here, a coverage tool typically implements statement coverage by adding a counter after every statement and initializing the counter to zero. Every time a test is simulated, some of the counters are modified. The coverage tool outputs all the counters that remain zero, as they are indicative of either dead-code or holes in the test plan.

Z is a model-oriented formal specification notation that was developed at Oxford University in the 1980s, with extensive industry collaboration. It has Automated Boundary Testing from Z and B 25 INITIAL STATE BOUNDARY STATE 1 BOUNDARY STATE 2 ... 2 ... m body invocation identification invocations FINAL STATE OF IDENTIFICATION FINAL STATE OF IDENTIFICATION FINAL STATE OF IDENTIFICATION postamble invocations Fig. 2. 2 become quite widely known and used, and is in the process of becoming an ISO standard.

This is the case for the scheduler example, and our three industrial case-studies. – our focus on boundary values (described in the next section) is a strong heuristic that typically forces some values within a or c to be chosen, rather than just b. Process scheduler example: When this is translated to BZP format, and each precondition and postcondition is transformed into DNF, we get the following predicates: pre(new )1 == pp ∈ waiting ∪ ready ∪ active post(new )1 == waiting = waiting ∪ {pp} ∧ ready = ready ∧ active = active pre(ready)1 == pp ∈ waiting post(ready)1 == active = {} ∧ waiting = waiting − {pp} ∧ ready = ready ∧ active = {pp} post(ready)2 == active = {} ∧ waiting = waiting − {pp} ∧ ready = ready ∪ {pp} ∧ active = active pre(swap)1 == active = {} post(swap)1 == ready = {} ∧ waiting = waiting ∧ ready = ready ∧ active = {} post(swap)2 == ready = {} ∧ (∃ pp ∈ ready | waiting = waiting ∧ ready = ready − {pp} ∧ active = {pp}) This gives five precondition subdomains, which are equivalent to the following predicates.

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