Some questions about how to debug the challenges with gdb?

[xiajia95]

Hi,
When I test DARPA Challenge Binaries on Linux, in the directory ‘cb-multios/build/challenges’, I can find each challenge has the binary and pov.pov.
I run an example in the directory ‘cb-multios/build/challenges/Hug_Game’, when I run ‘../../../tools/tester.py -c Hug_Game --povs’ as github, it shows:

### 
\Running tests against 1 challenge(s)

Testing Hug_Game...
POV:
	Running 2 test(s) => Passed 1/2
Done testing Hug_Game => Passed 1/2 tests

I don’t understand if the challenge has been triggered successfully, and what the meaning of the passed 1/2?

And I want to debug the binary using gdb, but I don’t know the true option, I run 'gdb Hug_Game', and next ‘r < pov.pov’, but it looks like doesn’t work.
So can you tell me how to debug it by using gdb?

Thanks