#16638: Random failure in ryser algorithm
---------------------------------+------------------------
Reporter: vbraun | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.9
Component: combinatorics | Resolution:
Keywords: random_fail | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
---------------------------------+------------------------
Changes (by jdemeyer):
* milestone: sage-6.4 => sage-6.9
Old description:
> I got this on my laptop once (with Sage 6.3.beta5)
> {{{
> sage -t --long src/sage/combinat/integer_vector.py
> **********************************************************************
> File "src/sage/combinat/integer_vector.py", line 347, in
> sage.combinat.integer_vector._slider01.range.gale_ryser_theorem
> Failed example:
> for algorithm in ["gale", "ryser"]: # long
> time
> for i in range(50): #
> long time
> test_algorithm(algorithm, 3, 10) #
> long time
> Expected nothing
> Got:
> Algorithm ryser failed with this input:
> [3, 3, 3, 1, 1, 0] [4, 4, 1, 1, 1]
> **********************************************************************
> }}}
New description:
Something like this happens sometimes when testing `integer_vector.py`:
{{{
sage -t --long src/sage/combinat/integer_vector.py
**********************************************************************
File "src/sage/combinat/integer_vector.py", line 347, in
sage.combinat.integer_vector._slider01.range.gale_ryser_theorem
Failed example:
for algorithm in ["gale", "ryser"]: # long
time
for i in range(50): #
long time
test_algorithm(algorithm, 3, 10) #
long time
Expected nothing
Got:
Algorithm ryser failed with this input:
[3, 3, 3, 1, 1, 0] [4, 4, 1, 1, 1]
**********************************************************************
}}}
--
--
Ticket URL: <http://trac.sagemath.org/ticket/16638#comment:14>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
