In question 11 you ask us to submit the exact input that causes the bug to happen, but apparently, if you append anything to the string "syssec@upb", such as "syssec@upbabcd", this still triggers the bug.
In my case afl++ found the input crashing the binary to be "syssec@upbss" which, when tested with the binary, leads to the output:
Tessa rocks :)
Segmentation fault (core dumped)
Of course, I copied what afl++ produced and didn't think much of it. I don't think it's fair for this not to count, since the binary still crashes.