Segmentation fault with large reference genome

[TomofumiSaka]

When I used large reference file (3.6Gbp) , DRAGMAP outputted the below warning message while building .

Increasing seed interval to1.156789 for long reference

With this reference hash table, DRAGMAP generated seeds to wrong place and exited by segmentation fault.
I don't know how to fix this bug but I was able to avoid this bug by increase memory usage by --ht-mem-limit 512GB option.

[TomofumiSaka]

As reported in this issue #33 , large reference files can not be used with DRAGMAP.
I fixed like this pull request #55 .

Then, I encountered this segmentation fault bug.