simple test stuck

[Andreas-Bio]

My test is stuck since one hour at:

[Merging datasets ] 81.8 % elapsed: 0 min 1 sec remaining: 0 min 0 sec cpu: 0.0 % mem: [ 11, 11, 12] MB

I tried the command max-merge 4 but now it is stuck in another spot:
[Merging datasets ] 86.4 % elapsed: 0 min 0 sec remaining: 0 min 0 sec cpu: 0.0 % mem: [ 10, 10, 10] MB 21 already merged (remove file /home/bio/Desktop/simka/example/simka_temp_output/simka_output_temp//merge_synchro/21.ok to merge again)