University of Minnesota
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Sanjai Rayadurgam

Photo of Sanjai Rayadurgam
Staff Member
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6-202 Keller Hall

Sanjai Rayadurgam is a Research Project Specialist at the University of Minnesota Software Engineering Center. His research interests are in software testing, formal analysis and requirements modeling, with particular focus on safety-critical systems development, where he has significant industrial experience. He earned a B.Sc. in Mathematics from the University of Madras at Chennai, and in Computer Science & Engineering, an M.E. from the Indian Institute of Science at Bangalore and a Ph.D. from the University of Minnesota at Twin Cities. He is a member of IEEE and ACM.

Recent Publications

Test-Sequence Generation from Formal Requirement Models

This paper discusses a method for generating test sequences from state-based specifications. We show how a model checker can be used to automatically generate complete test sequences that will provide arbitrary structural coverage of requirements specified in a high-level language like SCR or rsml. We have defined a language independent formal foundation for test sequence generation using model checkers that is suitable for representing software artifacts like requirements models, software specifications, and code. This paper shows a

Automatic Abstraction for Model Checking Software Systems with Interrelated Numeric Constraints

Model checking techniques have not been effective in important classes of software systems characterized by large (or infinite) input domains with interrelated linear and non-linear constraints over the input variables. Various model abstraction techniques have been proposed to address this problem. In this paper, we wish to propose domain abstraction based on data equivalence and trajectory reduction as an alternative and complement to other abstraction techniques. Our technique applies the abstraction to the input domain (environment) instead of the model and is

Specification Centered Testing

This position paper discusses a framework for automating the testing of systems with stringent structural coverage requirements, for example, avionics systems. The framework covers testing of the model of the desired behavior as well as the resulting implementation. We use a formal model of the required software behavior as the central component of our testing strategy; we call this approach specification centered testing. We discuss how a model checker can be used to automatically generate complete test sequences that will provide