Fixed null division for cases in which only exclude symbols are produced

2 jobs for develop in 1 minute and 3 seconds (queued for 1 second)
Status Name Job ID Coverage
failed masterJobWindows #632792


skipped BranchJobLinux #632793
Name Stage Failure
masterJobWindows Windows There is an unknown failure, please try again
[ERROR] Please refer to C:\Gitlab-Runner\builds\8M5sw8ub\0\monticore\EmbeddedMontiArc\generators\CNNArch2Gluon\target\surefire-reports for the individual test results.
[ERROR] -> [Help 1]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1]
ERROR: Job failed: exit status 1