By Borzoo Bonakdarpour, Scott A. Smolka

This e-book constitutes the refereed lawsuits of the fifth foreign convention on Runtime Verification, RV 2014, held in Toronto, ON, Canada in September 2014. The 28 revised complete papers offered including 2 device papers, and 8short papers have been rigorously reviewed and chosen from 70 submissions. The scope of the convention was once on following issues: tracking and hint cutting, runtime verification of disbursed and concurrent platforms, runtime Verification of real-time and embedded structures, trying out and insect discovering, and inference and learning.

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Additional resources for Runtime Verification: 5th International Conference, RV 2014, Toronto, ON, Canada, September 22-25, 2014. Proceedings

Example text

In Ro¸su and Chen’s Algorithm A [11] the separation is based on the data contained in the events. Events that share a piece of data — for example, the address of an object in memory — are identified as related and are put into the same slice. The algorithm is motivated by the observation that activities in a program that operate on separate sets of objects are usually not related. For example, when an iterator is created in a Java program, and the task is to monitor that the underlying collection is not modified while an iterator is used, operations on iterators created from other collections are irrelevant and these events need not (and should not) be put into the slice corresponding to that iterator.

Condition (2) is again immediate from the updates in lines 1 and 6. The sequence in which the elements of {θ} Θ are processed by the inner loop (lines 3 to 5) is not specified, and in particular an event e must not be added to the same slice twice. In fact, the outcome of the loop is invariant under the processing sequence, and it is sufficient to show that the order of two elements θ1 , θ2 ∈ {θ} Θ that are processed consecutively in the loop does not matter. This is a consequence of Lemma 3. For (3) the induction hypothesis is T(θ0 ) = τ θ0 for any θ0 ∈ Θ.

Instantiations are lifted to atoms: σ(e(t1 , . . , tk )) = e(σ(t1 ), . . , σ(tk )). Instantiations are no longer considered part of the trace but are inferred by matching events against patterns. A pattern p ∈ A(X, V ) matches an event q ∈ A(V ) if there is an instantiation θ ∈ X V such that θ(p) = q, and θ is a matcher of p and q. A minimal (or most general) matcher of p and q maps exactly the variables that occur in p to the corresponding values in q. If a matcher exists for p and q the minimal matcher is unique.

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