Programming

I have created a thread program, it is attached. My problem is that I need to loop this program multiple times, and basically reset everything including the threads created previously. I try to loop the program, the first run is fine, as always, but the second run of the program, the initialize function gets called but everything else is skipped. On the third (and last) run of the program, the creation of the thread finally executes, but this time, the initalization process is ignored. I say that the third is the last because no matter how many times I try to loop it, the program gets stuck on the third run. My question is: are the threads having a confilct? Also, am I cancelling the threads correctly? Is running the program multiple times, with each time generating new threads and executing the rest of the program properly, possible? Thanks in advance.