There are some problems with Jacoco, if you combine it with Mockito or Powermock. Maybe it is your case as well:
- Mockito - https://code.google.com/p/mockito/issues/detail?id=385&q=jacoco
- Powermock - more than one issues. See https://code.google.com/p/powermock/issues/list?can=2&q=jacoco&colspec=ID+Type+Status+Priority+Milestone+Owner+Summary&cells=tiles
As far as I think, Jacoco has no problem with static methods or static initializers.