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Thread 1 (Thread 0x7f0196197720 (LWP 3010)):
#0  0x00007f0193f69ecb in pkgCacheGenerator::NewDepends(pkgCache::PkgIterator&, pkgCache::VerIterator&, std::string const&, unsigned int const&, unsigned int const&, unsigned int*&) () from /usr/lib/libapt-pkg.so.4.11
No symbol table info available.
#1  0x00007f0193f6aa7e in pkgCacheGenerator::FinishCache(OpProgress*) () from /usr/lib/libapt-pkg.so.4.11
No symbol table info available.
#2  0x00007f0193f6cb28 in pkgCacheGenerator::MakeStatusCache(pkgSourceList&, OpProgress*, MMap**, bool) () from /usr/lib/libapt-pkg.so.4.11
No symbol table info available.
#3  0x00007f0193f5f082 in pkgCacheFile::BuildCaches(OpProgress*, bool) () from /usr/lib/libapt-pkg.so.4.11
No symbol table info available.
#4  0x00007f0193f5f4a4 in pkgCacheFile::Open(OpProgress*, bool) () from /usr/lib/libapt-pkg.so.4.11
No symbol table info available.
#5  0x00007f019421cf4a in ?? () from /usr/lib/python2.7/dist-packages/apt_pkg.so
No symbol table info available.
#6  0x000000000047c2e5 in ?? ()
No symbol table info available.
#7  0x000000000041ae4a in PyObject_Call ()
No symbol table info available.
#8  0x00000000004b6e5e in PyEval_EvalFrameEx ()
No symbol table info available.
#9  0x00000000004bcedd in PyEval_EvalCodeEx ()
No symbol table info available.
#10 0x00000000004b6caa in PyEval_EvalFrameEx ()
No symbol table info available.
#11 0x00000000004bcedd in PyEval_EvalCodeEx ()
No symbol table info available.
#12 0x00000000004bd9b2 in PyEval_EvalCode ()
No symbol table info available.
#13 0x00000000004dce62 in ?? ()
No symbol table info available.
#14 0x00000000004dda24 in PyRun_FileExFlags ()
No symbol table info available.
#15 0x00000000004de52e in PyRun_SimpleFileExFlags ()
No symbol table info available.
#16 0x00000000004ee8bd in Py_Main ()
No symbol table info available.
#17 0x00007f0194b5f30d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#18 0x000000000041cd09 in _start ()
No symbol table info available.