Publications de Stefan Bucur | EPFL Graph Search

Improving Scalability of Symbolic Execution for Software with Complex Environment Interfaces

Manual software testing is laborious and prone to human error. Yet, among practitioners, it is the most popular method for quality assurance. Automating the test case generation promises better effectiveness, especially for exposing corner-case bugs. Symbo ...

EPFL2015

Parallel symbolic execution on cluster of commodity hardware

George Candea, Cristian Zamfir, Stefan Bucur

A symbolic execution task is dynamically divided among multiple computing nodes. Each of the multiple computing nodes explores a different portion of a same symbolic execution tree independently of other computing nodes. Workload status updates are receive ...

2014

Prototyping Symbolic Execution Engines for Interpreted Languages

George Candea, Johannes Kinder, Stefan Bucur

Symbolic execution is being successfully used to automatically test statically compiled code. However, increasingly more systems and applications are written in dynamic interpreted languages like Python. Building a new symbolic execution engine is a monume ...

ACM2014

Advantageous State Merging During Symbolic Analysis

George Candea, Johannes Kinder, Volodymyr Kuznetsov, Stefan Bucur

A determination is made regarding whether to merge two symbolic analysis states. A first state corresponds to a first path through a program to a program location and a second state corresponds to a second path through the program to the program location. ...

2013

Making Automated Testing of Cloud Applications an Integral Component of PaaS

George Candea, Johannes Kinder, Stefan Bucur

Traditional testing is inadequate for the complexity of modern cloud application software stacks. While the platform-as-a-service (PaaS) model has streamlined application development and deployment, its multiple abstraction layers and dependencies have mad ...

2013

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

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 ...

Assoc Computing Machinery2012

Parallel symbolic execution for automated real-world software testing

George Candea, Cristian Zamfir, Stefan Bucur, Vlad Ureche

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

Automated Software Testing as a Service (TaaS)

George Candea, Cristian Zamfir, Stefan Bucur

This paper makes the case for TaaS - automated software testing as a cloud-based service. We present three kinds of TaaS: (1) a public certification service, akin to Underwriters Labs, that independently assesses the reliability, safety, and security of so ...

2010