Add a flag -a to show all verification conditions sent to the smt solver #240

Problem
When there is an error we can use -d to get more info. But when there isn't an error, and there should be, we also should be able to see more information than just "Correct! Passed verification" if we want to.

Proposed solution
Similar to debug logger, add info for every smt query that has been done.

Alternatives considered
Always showing everything is too much, using interactive debug is the current option but not the best