PROBLEM SOLVED (more or less)
Added 2018-06-11 16:04:01 +0000 UTCIt took me some time, but the problem was solved.
- I re-installed my audio drivers
- I re-installed adobe premiere pro
- I rendered animations, voices, and CG separately
- I tried different settings
NONE OF THIS WORKED (of course)
Finally I recorded few seconds of empty audio, and filled blank spaces in the video.
It worked.