Hi @nicogouin
I found the problem, and learned something!
For context, please see this two line discussion from the vcffilter tool author: vcffilter core dumped on negative values · Issue #249 · vcflib/vcflib · GitHub
That means the query you want would be one of these:
RPBZ < 0 - 5
RPBZ > 0 - 5
Please give that a try. My test run for this on your full dataset is still running but would have failed by now if the query itself was problematic.