Download Formal Methods for Industrial Critical Systems: 13th by Darren Cofer, Alessandro Fantechi PDF

By Darren Cofer, Alessandro Fantechi

This publication constitutes the completely refereed post-workshop complaints of the thirteenth foreign Workshop on Formal tools for business severe structures, FMICS 2008, held in L'Aquila, Italy, in September 2008 - colocated with ASE 2008, the twenty third foreign convention on automatic software program Engineering. The 14 revised complete papers offered including the abstracts of three invited displays and a couple of brief shows introducing the panel have been conscientiously chosen from 36 preliminary submissions. The papers try to advertise study and improvement for the advance of formal tools and instruments for business functions. They conceal themes reminiscent of version checking, checking out, software program verification, real-time functionality, and commercial case experiences.

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Additional resources for Formal Methods for Industrial Critical Systems: 13th International Workshop, FMICS 2008, L'Aquila, Italy, September 15-16, 2008, Revised Selected Papers ... Programming and Software Engineering)

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2. 3. 4. Reduce the number of states that need to be explored. Reduce the memory requirements needed for storing explored states. Use parallelism or distributed environment. Give up the requirement on completeness and explore only part of the state space. In the following we discuss these four types of approaches and for each of them we list examples of specific techniques. 1 State Space Reductions When we inspect some simple models and their state spaces, we quickly notice significant redundancy in these state spaces.

In this criterion, the path output depends on all the combinations of the path edges, also including the internal ones. A test input sequence is satisfied if and only if the path activation condition is satisfied for each edge value along the path. Formally, ∀p ∈ Pn , ∀e ∈ p, ∃t ∈ T : e ∧ AC (p) = true and not (e) ∧ AC (p) = true. The above criteria form a hierarchical relation: MCC satisfies all the conditions that ECC does, which also subsumes BC. 4 Extension of Coverage Criteria to when and current Operators The aim of this paper is to extend the above criteria in order to support the two temporal Lustre operators when and current, which handle the use of multiple clocks since this is the case for many industrial applications.

An example [4] of the use of clocks in Lustre is given in Figure 4. The Lustre node mux receives as input the signal m. Starting from this input value when the clock c is true, the program counts backwards until zero; from this moment, it restarts from the current input value and so on. 28 V. Papailiopoulou et al. node mux(m:int) returns (c:bool; y:int); var (x:int) when c; let y = if c then current(x) else pre(y)-1; c = true -> (pre(y)=0); x = m when c; tel; m x when current M1 y M2 − 1 pre ITE M5 M3 0 true = M4 c Fig.

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