Modeling and Checking Real-Time System Designs

Real-time systems are found in an increasing variety of application elds. Usually, they are embedded systems controlling devices that may risk lives or damage properties: they are safety critical systems. Hard Real-Time requirements (late means wrong) make the development of such kind of systems a formidable and daunting task.The need to predict temporal behavior of critical real-time systems has encouraged the development of an useful collection of models, results and tools for analyzing schedulability of applications. However, there is no general analytical support for verifying other kind of high level timing requirements on complex software architectures. On the other hand, the verication of specications and designs of real-time systems has been considered an interesting application eld for automatic analysis techniques such as model-checking. Unfortunately, there is a natural trade-o between sophistication of supported features and the practicality of formal analysis.Sociedad Argentina de Informática e Investigación Operativ

Declaratively building behavior by means of scenario clauses

In this work we present the article “Declaratively building behavior by means of scenario clauses”. This article was accepted in January 2016 in the journal “Requirements Engineering”, ISSN: 0947-3602 (http://link.springer.com/journal/766).Sociedad Argentina de Informática e Investigación Operativa (SADIO

Declaratively building behavior by means of scenario clauses

In this work we present the article “Declaratively building behavior by means of scenario clauses”. This article was accepted in January 2016 in the journal “Requirements Engineering”, ISSN: 0947-3602 (http://link.springer.com/journal/766).Sociedad Argentina de Informática e Investigación Operativa (SADIO

Summary-based inference of quantitative bounds of live heap objects

This article presents a symbolic static analysis for computing parametric upper bounds of the number of simultaneously live objects of sequential Java-like programs. Inferring the peak amount of irreclaimable objects is the cornerstone for analyzing potential heap-memory consumption of stand-alone applications or libraries. The analysis builds method-level summaries quantifying the peak number of live objects and the number of escaping objects. Summaries are built by resorting to summaries of their callees. The usability, scalability and precision of the technique is validated by successfully predicting the object heap usage of a medium-size, real-life application which is significantly larger than other previously reported case-studies.Fil: Braberman, Victor Adrian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Garbervetsky, Diego David. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Hym, Samuel. Universite Lille 3; FranciaFil: Yovine, Sergio Fabian. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Computación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

FVS: A declarative aspect oriented modeling language

Very well known problems such as the fragility problem, the AOP paradox, or the aspect interference problem threaten aspect oriented application in the modeling phase. In this work we explore FVS, a declarative visual language, as an aspect-oriented modeling language. Our language exhibits a very exible and rich joinpoint model to leverage aspect oriented application and is suitable for incremental modeling, a highly desirable quality attribute in any modeling language.Sociedad Argentina de Informática e Investigación Operativ

Declaratively building behavior by means of scenario clauses

In this work we present the article “Declaratively building behavior by means of scenario clauses”. This article was accepted in January 2016 in the journal “Requirements Engineering”, ISSN: 0947-3602 (http://link.springer.com/journal/766).Sociedad Argentina de Informática e Investigación Operativa (SADIO

Visual Scenarios for addressing the Aspect Interference Problem

One of the most challenging problems in the aspect-oriented community is known as the aspect interference problem. This situation arises when the behavior to be introduced by two or more aspects is applied at the same point of interest. In order for the developer to resolve this conflict aspects’ interaction and composition must be easy to analyze and manipulate. Under this context, we explore how FVS, a declarative visual language, can address this significant issue by providing a declarative and powerful pointcut model. In addition, FVS allows the possibility of reasoning about violating behavior, that represents a highly valuable information for the developer.Sociedad Argentina de Informática e Investigación Operativ

Exploring visual scenarios as an aspect-oriented modeling language

Very well known problems such as the fragility problem, the AOP paradox, or the aspect interference problem threaten aspect oriented application in the modeling phase. In this work we explore FVS, a declarative visual language, as an aspect-oriented modeling language. Our language exhibits a very flexible and rich joinpoint model to leverage aspect-oriented application and is suitable for incremental modeling, a highly desirable quality attribute in any modeling language.Sociedad Argentina de Informática e Investigación Operativ

Enhancing the adoption of formal methods to design real-time systems

Formal methods are being increasingly used in engineering industrial software. They are moatly used for specifying and verifying software requirements, but seldom in later development phases. This paper tries to bridge the gap between formal requirements specifiction and final code by introducing a formally defill ed désign notatlon. The propased design notation extends strtictured analysis specification notationswith conatructs derived from POSIX real-time extensions. The design notation proposed in this anide is formally defined. Also; an operational semantic la given by meana of high-Ievel timed Petri neta, and can be formally analyzed using tools and techniques available for Petri nets.Eje: Ingeniería de softwareRed de Universidades con Carreras en Informática (RedUNCI

Assured and Correct Dynamic Update of Controllers

We present a general approach to specifying correctness criteria for dynamic update and a technique for automatically computing a controller that handles the transition from the old to the new specification, assuring that the system will reach a state in which such a transition can correctly occur. Indeed, using controller synthesis we show how to automatically build a controller that guarantees both progress towards update and safe update.Sociedad Argentina de Informática e Investigación Operativa (SADIO