archive/issues_019879.json:
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"body": "<div id=\"comment:0\"></div>\n\nRandom failure on the buildbot (Ubuntu 14.04 32 bit)\n\n```\nsage -t --long src/sage/calculus/wester.py\n**********************************************************************\nFile \"src/sage/calculus/wester.py\", line 483, in sage.calculus.wester\nFailed example:\n m.eigenspaces_left()\nException raised:\n Traceback (most recent call last):\n File \"/mnt/highperf/buildbot/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py\", line 496, in _run\n self.compile_and_execute(example, compiler, test.globs)\n File \"/mnt/highperf/buildbot/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py\", line 858, in compile_and_execute\n exec(compiled, globs)\n File \"<doctest sage.calculus.wester[161]>\", line 1, in <module>\n m.eigenspaces_left()\n File \"sage/matrix/matrix2.pyx\", line 5474, in sage.matrix.matrix2.Matrix.eigenspaces_left (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix2.c:40098)\n G = self.fcp() # factored characteristic polynomial\n File \"sage/matrix/matrix2.pyx\", line 2431, in sage.matrix.matrix2.Matrix.fcp (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix2.c:20985)\n return self.charpoly(var).factor()\n File \"sage/matrix/matrix_rational_dense.pyx\", line 946, in sage.matrix.matrix_rational_dense.Matrix_rational_dense.charpoly (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_rational_dense.c:11037)\n f = A.charpoly(var, algorithm='linbox')\n File \"sage/matrix/matrix_integer_dense.pyx\", line 1252, in sage.matrix.matrix_integer_dense.Matrix_integer_dense.charpoly (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:12798)\n g = self._charpoly_linbox(var)\n File \"sage/matrix/matrix_integer_dense.pyx\", line 1305, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._charpoly_linbox (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:13598)\n return self._poly_linbox(var=var, typ='charpoly')\n File \"sage/matrix/matrix_integer_dense.pyx\", line 1328, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._poly_linbox (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:13957)\n sig_on()\n File \"src/cysignals/signals.pyx\", line 115, in cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1400)\n SignalError: Segmentation fault\n**********************************************************************\n1 item had failures:\n 1 of 199 in sage.calculus.wester\n [198 tests, 1 failure, 2.79 s]\n```\n\nCC: @malb @jdemeyer @videlec @kiwifb @ClementPernet\n\nComponent: **packages: standard**\n\nKeywords: **random_fail**\n\n_Issue created by migration from https://trac.sagemath.org/ticket/20116_\n\n",
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"repository": "https://github.com/sagemath/sage",
"title": "Random segfault in linbox charpoly",
"type": "issue",
"updated_at": "2022-12-29T01:35:15Z",
"url": "https://github.com/sagemath/sage/issues/20116",
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}Random failure on the buildbot (Ubuntu 14.04 32 bit)
sage -t --long src/sage/calculus/wester.py
**********************************************************************
File "src/sage/calculus/wester.py", line 483, in sage.calculus.wester
Failed example:
m.eigenspaces_left()
Exception raised:
Traceback (most recent call last):
File "/mnt/highperf/buildbot/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 496, in _run
self.compile_and_execute(example, compiler, test.globs)
File "/mnt/highperf/buildbot/slave/sage_git/build/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 858, in compile_and_execute
exec(compiled, globs)
File "<doctest sage.calculus.wester[161]>", line 1, in <module>
m.eigenspaces_left()
File "sage/matrix/matrix2.pyx", line 5474, in sage.matrix.matrix2.Matrix.eigenspaces_left (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix2.c:40098)
G = self.fcp() # factored characteristic polynomial
File "sage/matrix/matrix2.pyx", line 2431, in sage.matrix.matrix2.Matrix.fcp (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix2.c:20985)
return self.charpoly(var).factor()
File "sage/matrix/matrix_rational_dense.pyx", line 946, in sage.matrix.matrix_rational_dense.Matrix_rational_dense.charpoly (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_rational_dense.c:11037)
f = A.charpoly(var, algorithm='linbox')
File "sage/matrix/matrix_integer_dense.pyx", line 1252, in sage.matrix.matrix_integer_dense.Matrix_integer_dense.charpoly (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:12798)
g = self._charpoly_linbox(var)
File "sage/matrix/matrix_integer_dense.pyx", line 1305, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._charpoly_linbox (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:13598)
return self._poly_linbox(var=var, typ='charpoly')
File "sage/matrix/matrix_integer_dense.pyx", line 1328, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._poly_linbox (/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:13957)
sig_on()
File "src/cysignals/signals.pyx", line 115, in cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1400)
SignalError: Segmentation fault
**********************************************************************
1 item had failures:
1 of 199 in sage.calculus.wester
[198 tests, 1 failure, 2.79 s]
CC: @malb @jdemeyer @videlec @kiwifb @ClementPernet
Component: packages: standard
Keywords: random_fail
Issue created by migration from https://trac.sagemath.org/ticket/20116
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"body": "<div id=\"comment:2\" align=\"right\">comment:2</div>\n\nJust to clarify: did this happen while testing #17635?",
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Just to clarify: did this happen while testing #17635?
archive/issue_comments_288678.json:
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"body": "<div id=\"comment:3\" align=\"right\">comment:3</div>\n\nNo, only already-closed tickets are in there.",
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No, only already-closed tickets are in there.
archive/issue_comments_288679.json:
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"body": "<div id=\"comment:4\" align=\"right\">comment:4</div>\n\nI just got this on sage-7.1.beta5, which look related:\n\n```\n**********************************************************************\nFile \"src/sage/schemes/elliptic_curves/ell_rational_field.py\", line 3807, in sage.schemes.elliptic_curves.ell_rational_field.EllipticCurve_rational_field.congruence_number\nFailed example:\n E.congruence_number() # long time (4s on sage.math, 2011)\nException raised:\n Traceback (most recent call last):\n File \"/usr/local/src/sage-git/local/lib/python2.7/site-packages/sage/doctest/forker.py\", line 496, in _run\n self.compile_and_execute(example, compiler, test.globs)\n File \"/usr/local/src/sage-git/local/lib/python2.7/site-packages/sage/doctest/forker.py\", line 858, in compile_and_execute\n exec(compiled, globs)\n File \"<doctest sage.schemes.elliptic_curves.ell_rational_field.EllipticCurve_rational_field.congruence_number[8]>\", line 1, in <module>\n E.congruence_number() # long time (4s on sage.math, 2011)\n File \"/usr/local/src/sage-git/local/lib/python2.7/site-packages/sage/schemes/elliptic_curves/ell_rational_field.py\", line 3847, in congruence_number\n V = W.complement().cuspidal_subspace()\n File \"sage/misc/cachefunc.pyx\", line 1909, in sage.misc.cachefunc.CachedMethodCaller.__call__ (build/cythonized/sage/misc/cachefunc.c:9941)\n w = self._instance_call(*args, **kwds)\n File \"sage/misc/cachefunc.pyx\", line 1785, in sage.misc.cachefunc.CachedMethodCaller._instance_call (build/cythonized/sage/misc/cachefunc.c:9408)\n return self.f(self._instance, *args, **kwds)\n File \"/usr/local/src/sage-git/local/lib/python2.7/site-packages/sage/modular/hecke/submodule.py\", line 370, in complement\n g = T.charpoly('x')\n File \"sage/matrix/matrix_rational_dense.pyx\", line 946, in sage.matrix.matrix_rational_dense.Matrix_rational_dense.charpoly (build/cythonized/sage/matrix/matrix_rational_dense.c:11037)\n f = A.charpoly(var, algorithm='linbox')\n File \"sage/matrix/matrix_integer_dense.pyx\", line 1252, in sage.matrix.matrix_integer_dense.Matrix_integer_dense.charpoly (build/cythonized/sage/matrix/matrix_integer_dense.c:12798)\n g = self._charpoly_linbox(var)\n File \"sage/matrix/matrix_integer_dense.pyx\", line 1305, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._charpoly_linbox (build/cythonized/sage/matrix/matrix_integer_dense.c:13598)\n return self._poly_linbox(var=var, typ='charpoly')\n File \"sage/matrix/matrix_integer_dense.pyx\", line 1328, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._poly_linbox (build/cythonized/sage/matrix/matrix_integer_dense.c:13957)\n sig_on()\n MemoryError: failed to allocate 8589934600 bytes\n**********************************************************************\n```",
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I just got this on sage-7.1.beta5, which look related:
**********************************************************************
File "src/sage/schemes/elliptic_curves/ell_rational_field.py", line 3807, in sage.schemes.elliptic_curves.ell_rational_field.EllipticCurve_rational_field.congruence_number
Failed example:
E.congruence_number() # long time (4s on sage.math, 2011)
Exception raised:
Traceback (most recent call last):
File "/usr/local/src/sage-git/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 496, in _run
self.compile_and_execute(example, compiler, test.globs)
File "/usr/local/src/sage-git/local/lib/python2.7/site-packages/sage/doctest/forker.py", line 858, in compile_and_execute
exec(compiled, globs)
File "<doctest sage.schemes.elliptic_curves.ell_rational_field.EllipticCurve_rational_field.congruence_number[8]>", line 1, in <module>
E.congruence_number() # long time (4s on sage.math, 2011)
File "/usr/local/src/sage-git/local/lib/python2.7/site-packages/sage/schemes/elliptic_curves/ell_rational_field.py", line 3847, in congruence_number
V = W.complement().cuspidal_subspace()
File "sage/misc/cachefunc.pyx", line 1909, in sage.misc.cachefunc.CachedMethodCaller.__call__ (build/cythonized/sage/misc/cachefunc.c:9941)
w = self._instance_call(*args, **kwds)
File "sage/misc/cachefunc.pyx", line 1785, in sage.misc.cachefunc.CachedMethodCaller._instance_call (build/cythonized/sage/misc/cachefunc.c:9408)
return self.f(self._instance, *args, **kwds)
File "/usr/local/src/sage-git/local/lib/python2.7/site-packages/sage/modular/hecke/submodule.py", line 370, in complement
g = T.charpoly('x')
File "sage/matrix/matrix_rational_dense.pyx", line 946, in sage.matrix.matrix_rational_dense.Matrix_rational_dense.charpoly (build/cythonized/sage/matrix/matrix_rational_dense.c:11037)
f = A.charpoly(var, algorithm='linbox')
File "sage/matrix/matrix_integer_dense.pyx", line 1252, in sage.matrix.matrix_integer_dense.Matrix_integer_dense.charpoly (build/cythonized/sage/matrix/matrix_integer_dense.c:12798)
g = self._charpoly_linbox(var)
File "sage/matrix/matrix_integer_dense.pyx", line 1305, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._charpoly_linbox (build/cythonized/sage/matrix/matrix_integer_dense.c:13598)
return self._poly_linbox(var=var, typ='charpoly')
File "sage/matrix/matrix_integer_dense.pyx", line 1328, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._poly_linbox (build/cythonized/sage/matrix/matrix_integer_dense.c:13957)
sig_on()
MemoryError: failed to allocate 8589934600 bytes
**********************************************************************
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"body": "<div id=\"comment:5\" align=\"right\">comment:5</div>\n\nCould #17075 somehow have caused this?",
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Could #17075 somehow have caused this?
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