Trying to determine the kernel of a map between free ZZ-modules of finite rank, I get the following error
File "/home/ubuntu/SageMath/local/lib/python2.7/site-packages/sage/modules/matrix_morphism.py", line 720, in kernel
V = self.matrix().kernel()
File "sage/matrix/matrix2.pyx", line 4337, in sage.matrix.matrix2.Matrix.left_kernel (build/cythonized/sage/matrix/matrix2.c:32211)
File "sage/matrix/matrix2.pyx", line 4178, in sage.matrix.matrix2.Matrix.right_kernel (build/cythonized/sage/matrix/matrix2.c:31652)
File "sage/matrix/matrix2.pyx", line 3782, in sage.matrix.matrix2.Matrix.right_kernel_matrix (build/cythonized/sage/matrix/matrix2.c:30166)
File "sage/matrix/matrix_integer_dense.pyx", line 2558, in sage.matrix.matrix_integer_dense.Matrix_integer_dense._right_kernel_matrix (build/cythonized/sage/matrix/matrix_integer_dense.c:22234)
File "cypari2/gen.pyx", line 4483, in cypari2.gen.Gen.matkerint
File "cypari2/handle_error.pyx", line 196, in cypari2.handle_error._pari_err_handle
cypari2.handle_error.PariError: the PARI stack overflows (current size: 259719168; maximum size: 259719168)
You can use pari.allocatemem() to change the stack size and try again
How do I adjust the maximum PARI stack size from within Sage?
