%0 Conference Proceedings %F clarke02a %A Clarke, D. %A Jéron, T. %A Rusu, V. %A Zinovieva, E. %T STG: a Symbolic Test Generation tool %B (Tool paper) Tools and Algorithms for the Construction and Analysis of Systems (TACAS'02). Volume 2280 of LNCS %I Springer-Verlag %X We report on a tool we have developed that implements conformance testing techniques to automatically derive symbolic tests cases from formal operational specifications. We demonstrate the application of the techniques and tools on a simple example and present case studies for the CEPS (Common Electronic Purse Specification) and for the file system of the 3GPP (3rd Generation Partnership Project) card %U http://www.irisa.fr/vertecs/Publis/Ps/2002-TACAS.ps.gz %D 2002