Abstract
For the traditional SRGMs, it is assumed that a detected fault is immediately removed and is perfectly repaired with no new faults being introduced. In reality, it is impossible to remove all faults from the fault correction process and have a fault-free effect on the software development environment. In order to relax this perfect debugging assumption, we introduce the possibility of imperfect debugging phenomenon. Furthermore, most of the traditional SRGMs have focused on the failure detection process. Consideration of fault correction process in the existing models is limited. However, to achieve desired level of software quality, it is very important to apply powerful technologies for removing the errors in the fault correction process. Therefore, we divide these processes into different two non-homogeneous Poisson processes (NHPPs). Moreover, these models are considered to be more practical to depict the fault-removal phenomenon in software development. ©2004IEEE.