Hello everybody

what NetWallah wrote at 19. Aug is true. This is the reason, why the output did hang and was driving into time out.

How did I get to this? I managed to remove all error messages, respective warnings except of one. This one error message takes 96 bytes. So now the code was put out completely. So the problem is really in the amount of error output. This was described in the link postet above to the 10 year old problem with error buffer.

So now all works fine. I thank you all. Have a nice day

PS: NetWallah, I have seen you posted another comment. I have a Windows system. The time command there has another function as under Linux. So I cannot test. Also I have removed all points that did cause error messages. It took round about 2 sec to run the complete output on command line. The error did not appear, when I did run on command line.