Fig. 6

(a) The energy variation over time of test case using WinDGF_path mode to fuzz XnView, (b) the energy variation over time of test case using WinDGF_keyblock mode to fuzz XnView, (c) the energy variation over time of test case using WinDGF_path mode to fuzz ABC Viewer, (d) the energy variation over time of test case using WinDGF_keyblock mode to fuzz ABC Viewer.