Also experiencing segmentation fault with `rainbow merge`

[mhoban]

I am also getting a segmentation fault when attempting to do rainbow merge. I've attached a file with a single pair of sequences that's able to reproduce the problem:

to_merge.txt

Here are its contents:

1	1	GATCTTGTCAGAGTCCATCCGAACCTTTTCCCGTTCTTCGAGCCATTTTTTAGTCTCCGTAAGTCGGTTAAACCAGGGTGAGCCGATGTTTTTGTAGTACTCAAGCAAAGTTCCATCTTCAATGTTGCGTAGCTGAATCGCATAAACATGCCTGGCGTAAAACGAACTACGAACTTTCCTTCGAATCTTTGCCATAAATCTTGGTGTGAGGTCCTTTCCTAGACCTTTGTCCCAACGCCAACGAATAAAACGACGCCCGCTTTTCTCTACACCCCTTTCTGTTTCTTTTATGTACAGATC	GATCTGTACATAAAAGAAACAGAAAGGGGTGTAGAGAAAAGCGGGCGTCGTTTTATTCGTTGGCGTTGGGACAAAGGTCTAGGAAAGGACCTCACACCAAGATTTATGGCAAAGATTCGAAGGAAAGTTCGTAGTTCGTTTTACGCCAGGCATGTTTATGCGATTCAGCTACGCAACATTGAAGATGGAACTTTGCTTGAGTACTACAAAAACATCGGCTCACCCTGGTTTAACCGACTTACGGAGACTAAAAAATGGCTCGAAGAACGGGAAAAGGTTCGGATGGACTCTGACAAGATC	1

The command is:

$ rainbow merge -i to_merge -o merged  -r 2 -N10000 -R10000 -l 20 -f 0.75  -a
Segmentation fault (core dumped)

The problem also occurs with minimal options:

$ rainbow merge -i to_merge -o merged 
Segmentation fault (core dumped)

Any idea what's going on here?