Discussion related to cado-nfs

[Christophe Clavier <christophe.clavier@unilim.fr>]

Hello,

I got the following error in the merge phase of a factorisation with cado :

Info:Filtering - Singleton removal: Have enough relations
Info:HTTP server: Got notification to stop serving Workunits
Info:Lattice Sieving: Cancelling remaining workunits
Info:Filtering - Merging: Starting
Warning:Command: Process with PID 26288 finished with return code -6
Error:Filtering - Merging: Program run on server failed with exit code -6
Error:Filtering - Merging: Command line was: /home/clavip01/math/cado-nfs-2.1.1/build/opn/filter/merge -mat ./tmp/A_1992_1435.c156.purge.purged.gz -out ./tmp/A_1992_1435.c156.merge.history.gz -maxlevel 25 -keep 160 -skip 32 -forbw 3 -ratio 1.1 > ./tmp/A_1992_1435.c156.merge.merge.stdout.1 2> ./tmp/A_1992_1435.c156.merge.merge.stderr.1
Error:Filtering - Merging: Stderr output follows (stored in file ./tmp/A_1992_1435.c156.merge.merge.stderr.1):
b'# Warning: parameter nbmergemax is checked by this program but is undocumented.\nantebuffer set to /home/clavip01/math/cado-nfs-2.1.1/build/opn/utils/antebuffer\ncode BUG() : condition e == 1 failed in insert_rel_into_table at /home/clavip01/math/cado-nfs-2.1.1/filter/filter_matrix.c:100 -- Abort\n'
Traceback (most recent call last):
  File "../../scripts/cadofactor/cadofactor.py", line 72, in <module>
    factors = factorjob.run()
  File "/home/clavip01/math/cado-nfs-2.1.1/scripts/cadofactor/cadotask.py", line 4720, in run
    last_status, last_task = self.run_next_task()
  File "/home/clavip01/math/cado-nfs-2.1.1/scripts/cadofactor/cadotask.py", line 4788, in run_next_task
    return [task.run(), task.title]
  File "/home/clavip01/math/cado-nfs-2.1.1/scripts/cadofactor/cadotask.py", line 3438, in run
    raise Exception("Program failed")
Exception: Program failed

Any idea what happened? Maybe a relation that is not correct?

Thanks for any help.

Christophe