  In black-box testing of GUI applications (a form of system testing), a
dynamic analysis of the GUI application is used to infer a black-box model; the
black-box model is then used to derive test cases for the test of the GUI
application. In this paper, we propose to supplement the test with the
verification of the black-box model. We present a method that can give a
guarantee of the absence of faults, i.e., the correctness of all test cases of
the black-box model. The black-model allows us to formulate a parametrized
verification problem. As we will show, it also allows us to circumvent the
static analysis of the GUI tool kit. We have implemented our approach;
preliminary experiments indicate its practical potential.
