Random testing has revealed a problem in test_karatsuba_multiplication #35715
Description
Is there an existing issue for this?
- I have searched the existing issues for a bug report that matches the one I want to file, without success.
Did you read the documentation and troubleshoot guide?
- I have read the documentation and troubleshoot guide
Environment
- **OS**: Ubuntu 18.04 32 bit
- **Sage Version**: 10.1.beta1Steps To Reproduce
Random fail when running the tests, just saw it for the first time on a build bot:
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File "src/sage/rings/tests.py", line 449, in sage.rings.tests.?
Failed example:
test_karatsuba_multiplication(QQbar, 3, 3, numtests=2) # long time # optional - sage.rings.number_field
Expected nothing
Got:
Random testing has revealed a problem in test_karatsuba_multiplication
Please report this bug! You may be the first
person in the world to have seen this problem.
Please include this random seed in your bug report:
Random seed: 164480309984640964737929113640888706047
ValueError('Multiplication failed')
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1 item had failures:
1 of 13 in sage.rings.tests.?
[62 tests, 1 failure, 25.59 s]
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sage -t --long --random-seed=0 src/sage/rings/tests.py # 1 doctest failed
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Expected Behavior
Doctest should not fail
Actual Behavior
Doctest fails (randomly, seed is provided above)
Additional Information
probably due to #35443