  Bug finding tools can find defects in software source code us- ing an
automated static analysis. This automation may be able to reduce the time spent
for other testing and review activities. For this we need to have a clear
understanding of how the defects found by bug finding tools relate to the
defects found by other techniques. This paper describes a case study using
several projects mainly from an industrial environment that were used to
analyse the interrelationships. The main finding is that the bug finding tools
predominantly find different defects than testing but a subset of defects found
by reviews. However, the types that can be detected are analysed more
thoroughly. Therefore, a combination is most advisable if the high number of
false positives of the tools can be tolerated.
