I'm seeing what I think is false positive in this code block

try {
   ...
}
catch (Exception e) {
    if ( e instanceof InterruptedException ) { // <- false positive
        ...
    }
}

instanceof will always return false
This instanceof test will always return false. Although this is safe, make sure it isn't an indication of some misunderstanding or some other logic error.

Bug kind and pattern: BC - BC_IMPOSSIBLE_INSTANCEOF

instanceof will always return false in [...], since a RuntimeException can't be a InterruptedException

It appears as through the Exception is being turned into a RuntimeException incorrectly, before analysis.

This also appears to have been reported against Findbugs:

https://sourceforge.net/p/findbugs/bugs/1463/

I've seen the same problem with IntelliJ's inspections