Thread 1 (Thread 0x7ffff7fbd9c0 (LWP 17139)):
#0  0x00007ffff7b28994 in pkgRecords::Lookup(pkgCache::VerFileIterator const&) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
No symbol table info available.
#1  0x000000000044d3e2 in ?? ()
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#2  0x00000000004428ec in ?? ()
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#3  0x00000000004349d8 in ?? ()
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#4  0x0000000000434fee in ?? ()
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#5  0x00007ffff657ea17 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#6  0x00007ffff65987f0 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#7  0x00007ffff6598f22 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#8  0x00007ffff7159843 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
No symbol table info available.
#9  0x00007ffff715d432 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
No symbol table info available.
#10 0x00007ffff704649c in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
No symbol table info available.
#11 0x00007ffff657e750 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#12 0x00007ffff659074d in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#13 0x00007ffff659844a in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#14 0x00007ffff6598f22 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#15 0x00007ffff717577e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
No symbol table info available.
#16 0x00007ffff704444e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
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#17 0x00007ffff7046185 in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
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#18 0x00007ffff6c755e2 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#19 0x00007ffff62bae85 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#20 0x00007ffff62bb1c8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#21 0x00007ffff62bb63a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#22 0x00007ffff70454a5 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
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#23 0x00000000004165e8 in ?? ()
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#24 0x00007ffff4ecaea5 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
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#25 0x0000000000418991 in ?? ()
No symbol table info available.