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Model-based automated testing of critical PLC programs

Publications associées (65)

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Fast black-box testing of system recovery code

George Candea, Radu Banabic

Fault injection-a key technique for testing the robustness of software systems-ends up rarely being used in practice, because it is labor-intensive and one needs to choose between performing random injections (which leads to poor coverage and low represent ...

2012

Hycon2 Benchmark: Power Network System

Giancarlo Ferrari Trecate

As a benchmark exercise for testing software and methods developed in Hycon2 for decen- tralized and distributed control, we address the problem of designing the Automatic Genera- tion Control (AGC) layer in power network systems. In particular, we present ...

2012

Distributed Group Testing Detection in Sensor Networks

Pascal Frossard, Tamara Tosic

We consider the problem of failure detection in sensor networks and we propose a new distributed detection algorithm based on Group Testing. We examine the presence of defective sensors by employing tests over locally gathered sensor measurements. Tests ar ...

2012

Efficient State Merging in Symbolic Execution

George Candea, Johannes Kinder, Volodymyr Kuznetsov, Stefan Bucur

Symbolic execution has proven to be a practical technique for building automated test case generation and bug finding tools. Nevertheless, due to state explosion, these tools still struggle to achieve scalability. Given a program, one way to reduce the num ...

ACM2012

Efficient State Merging in Symbolic Execution

George Candea, Johannes Kinder, Volodymyr Kuznetsov, Stefan Bucur

Assoc Computing Machinery2012

Exterminating Bugs via Collective Information Recycling

George Candea

End-user software is executed billions of times daily, but the corresponding execution details (“by-products”) are discarded. We hypothesize that, if suitably captured and aggregated, these by-products could substantially speed up the process of testing pr ...

2011

Parallel symbolic execution for automated real-world software testing

George Candea, Cristian Zamfir, Vlad Ureche, Stefan Bucur

This paper introduces Cloud9, a platform for automated testing of real-world software. Our main contribution is the scalable parallelization of symbolic execution on clusters of commodity hardware, to help cope with path explosion. Cloud9 provides a system ...

ACM Press2011

A novel framework for noise robust ASR using cochlear implant-like spectrally reduced speech

We propose a novel framework for noise robust automatic speech recognition (ASR) based on cochlear implant-like spectrally reduced speech (SRS). Two experimental protocols (EPs) are proposed in order to clarify the advantage of using SRS for noise robust A ...

2011

Efficient Testing of Recovery Code Using Fault Injection

George Candea, Paul Dan Marinescu

A critical part of developing a reliable software system is testing its recovery code. This code is traditionally difficult to test in the lab, and, in the field, it rarely gets to run; yet, when it does run, it must execute flawlessly in order to recover ...

2011

Rate distortion analysis in a disparity compensated scheme

Pascal Frossard, Thomas Maugey

This paper addresses the problem of rate distortion analysis in the context of multi-view image coding, where images are predicted via disparity compensation based on depth map. We first present an an- alytical model for the variance of the residual error ...

2011