This figure shows the output of a software reliability modeling tool called CASRE (Computer Aided Software Reliability Estimation) developed at CalTech/JPL. Two of the models, the nonhomogenous Poisson process (NHPP) model and the Schneidewind model, closely fit the cumulative defect history curve from system testing for a flight software project. The blue part of the curve displays the end of data bar and the failure prediction results two weeks into the future.