Your log file ends with "main() caught exception(std::exception): SystemGraphIndex cannot be found due to invalid system ID -1" which looks very similar to this post
. As in that thread, if you could post a zipped save game that produces this crash on the next turn, that would be helpful.
There's probably a particular building you're about to produce, or tech about to be researched, that is causing the crash. You might look for something you haven't produced before, and try removing it from the production queue.