Individual characters can be made out, but words are hard to read. Not enough separation between letters and symbols, so constructs like "(pred=%i)\t" are harder to visually parse. I'm also not a fan of aliased pixel fonts -- it really exacerbates the picket-fence effect while reading.

Here's what your code sample looks like in Source Code Pro:

http://i.imgur.com/uAknyGB.png

Smaller font:

http://i.imgur.com/m0p17tm.png

Notice how all letters take up the full horizontal width so words clump together. It's easy to see that a space is a space, and not just an "i" next to an "l"

It's also worth noting that I had to try 3 separate OCR processors with your sample before I got one that didn't output complete garbage.