### Sanjit A. Seshia and Alexander Rakhlin

###
EECS Department

University of California, Berkeley

Technical Report No. UCB/EECS-2010-102

June 30, 2010

### http://www2.eecs.berkeley.edu/Pubs/TechRpts/2010/EECS-2010-102.pdf

The analysis of quantitative properties, such as timing and power, is central to the design of reliable embedded software and systems. However, the verification of such properties on a program is made difficult by their heavy dependence on the program's environment, such as the processor it runs on. Modeling the environment by hand can be tedious, error-prone and time consuming. In this paper, we present a new, game-theoretic approach to analyzing quantitative properties that is based on performing systematic measurements to automatically learn a model of the environment. We model the problem as a game between our algorithm (player) and the environment of the program (adversary), where the player seeks to accurately predict the property of interest while the adversary sets environment states and parameters. To solve this problem, we employ a randomized strategy that repeatedly tests the program along a linear-sized set of program paths called basis paths, using the resulting measurements to infer a weighted-graph model of the environment, from which quantitative properties can be predicted. Test cases are automatically generated using satisfiability modulo theories (SMT) solving. We prove that our algorithm can, under certain assumptions and with arbitrarily high probability, accurately predict properties such as worst-case execution time or estimate the distribution of execution times. Experimental results for execution time analysis demonstrate that our approach is efficient, accurate, and highly portable.

BibTeX citation:

@techreport{Seshia:EECS-2010-102, Author = {Seshia, Sanjit A. and Rakhlin, Alexander}, Title = {Quantitative Analysis of Systems Using Game-Theoretic Learning}, Institution = {EECS Department, University of California, Berkeley}, Year = {2010}, Month = {Jun}, URL = {http://www2.eecs.berkeley.edu/Pubs/TechRpts/2010/EECS-2010-102.html}, Number = {UCB/EECS-2010-102}, Abstract = {The analysis of quantitative properties, such as timing and power, is central to the design of reliable embedded software and systems. However, the verification of such properties on a program is made difficult by their heavy dependence on the program's environment, such as the processor it runs on. Modeling the environment by hand can be tedious, error-prone and time consuming. In this paper, we present a new, game-theoretic approach to analyzing quantitative properties that is based on performing systematic measurements to automatically learn a model of the environment. We model the problem as a game between our algorithm (player) and the environment of the program (adversary), where the player seeks to accurately predict the property of interest while the adversary sets environment states and parameters. To solve this problem, we employ a randomized strategy that repeatedly tests the program along a linear-sized set of program paths called basis paths, using the resulting measurements to infer a weighted-graph model of the environment, from which quantitative properties can be predicted. Test cases are automatically generated using satisfiability modulo theories (SMT) solving. We prove that our algorithm can, under certain assumptions and with arbitrarily high probability, accurately predict properties such as worst-case execution time or estimate the distribution of execution times. Experimental results for execution time analysis demonstrate that our approach is efficient, accurate, and highly portable.} }

EndNote citation:

%0 Report %A Seshia, Sanjit A. %A Rakhlin, Alexander %T Quantitative Analysis of Systems Using Game-Theoretic Learning %I EECS Department, University of California, Berkeley %D 2010 %8 June 30 %@ UCB/EECS-2010-102 %U http://www2.eecs.berkeley.edu/Pubs/TechRpts/2010/EECS-2010-102.html %F Seshia:EECS-2010-102