==12543== Invalid read of size 8
==12543==    at 0x746BD80: g_type_check_instance_cast (gtype.c:3997)
==12543==    by 0x58EDA9C: cell_info_free (gtktreeviewaccessible.c:107)
==12543==    by 0x76C1E92: g_hash_table_remove_all_nodes (ghash.c:503)
==12543==    by 0x76C2BD0: g_hash_table_remove_all (ghash.c:1371)
==12543==    by 0x58EF677: gtk_tree_view_accessible_notify_gtk (gtktreeviewaccessible.c:199)
==12543==    by 0x7449017: g_closure_invoke (gclosure.c:768)
==12543==    by 0x745B42C: signal_emit_unlocked_R (gsignal.c:3551)
==12543==    by 0x7463448: g_signal_emit_valist (gsignal.c:3307)
==12543==    by 0x7463701: g_signal_emit (gsignal.c:3363)
==12543==    by 0x744D424: g_object_dispatch_properties_changed (gobject.c:1053)
==12543==    by 0x744FB9A: g_object_notify (gobject.c:1147)
==12543==    by 0x586B0E6: gtk_tree_view_set_model (gtktreeview.c:11429)
==12543==    by 0xC124ADB: ffi_call_unix64 (in /usr/lib/x86_64-linux-gnu/libffi.so.6.0.1)
==12543==    by 0xC12440B: ffi_call (in /usr/lib/x86_64-linux-gnu/libffi.so.6.0.1)
==12543==    by 0x11A42CF1: pygi_callable_info_invoke (pygi-invoke.c:36)
==12543==    by 0x11A3892D: _callable_info_call (pygi-info.c:556)
==12543==    by 0x10EAB207: PyObject_Call (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10E900B8: PyEval_EvalFrameEx (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10E93C14: PyEval_EvalFrameEx (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EC17C5: PyEval_EvalCodeEx (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EC1DF5: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EAB207: PyObject_Call (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10DBE8CC: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EAB207: PyObject_Call (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EAAD16: PyEval_CallObjectWithKeywords (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x11A42267: pygi_signal_closure_marshal (pygi-signal-closure.c:148)
==12543==    by 0x7449017: g_closure_invoke (gclosure.c:768)
==12543==    by 0x745B42C: signal_emit_unlocked_R (gsignal.c:3551)
==12543==    by 0x7463448: g_signal_emit_valist (gsignal.c:3307)
==12543==    by 0x7463701: g_signal_emit (gsignal.c:3363)
==12543==    by 0x565779C: gtk_button_do_release (gtkbutton.c:1987)
==12543==    by 0x56577F5: gtk_real_button_released (gtkbutton.c:2105)
==12543==    by 0x7449246: _g_closure_invoke_va (gclosure.c:831)
==12543==    by 0x7462AA7: g_signal_emit_valist (gsignal.c:3215)
==12543==    by 0x7463701: g_signal_emit (gsignal.c:3363)
==12543==    by 0x5655B8C: gtk_button_button_release (gtkbutton.c:1942)
==12543==    by 0x573E01D: _gtk_marshal_BOOLEAN__BOXEDv (gtkmarshalers.c:130)
==12543==    by 0x7449246: _g_closure_invoke_va (gclosure.c:831)
==12543==    by 0x7462AA7: g_signal_emit_valist (gsignal.c:3215)
==12543==    by 0x7463701: g_signal_emit (gsignal.c:3363)
==12543==  Address 0x12535690 is 96 bytes inside a block of size 208 free'd
==12543==    at 0x4C2B68C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12543==    by 0x746AB79: g_type_free_instance (gtype.c:1932)
==12543==    by 0x58D2CC9: gtk_cell_accessible_object_finalize (gtkcellaccessible.c:82)
==12543==    by 0x744DA59: g_object_unref (gobject.c:3112)
==12543==    by 0x58EDAAE: cell_info_free (gtktreeviewaccessible.c:108)
==12543==    by 0x76C1E92: g_hash_table_remove_all_nodes (ghash.c:503)
==12543==    by 0x76C2BD0: g_hash_table_remove_all (ghash.c:1371)
==12543==    by 0x58EF677: gtk_tree_view_accessible_notify_gtk (gtktreeviewaccessible.c:199)
==12543==    by 0x7449017: g_closure_invoke (gclosure.c:768)
==12543==    by 0x745B42C: signal_emit_unlocked_R (gsignal.c:3551)
==12543==    by 0x7463448: g_signal_emit_valist (gsignal.c:3307)
==12543==    by 0x7463701: g_signal_emit (gsignal.c:3363)
==12543==    by 0x744D424: g_object_dispatch_properties_changed (gobject.c:1053)
==12543==    by 0x744FB9A: g_object_notify (gobject.c:1147)
==12543==    by 0x586B0E6: gtk_tree_view_set_model (gtktreeview.c:11429)
==12543==    by 0xC124ADB: ffi_call_unix64 (in /usr/lib/x86_64-linux-gnu/libffi.so.6.0.1)
==12543==    by 0xC12440B: ffi_call (in /usr/lib/x86_64-linux-gnu/libffi.so.6.0.1)
==12543==    by 0x11A42CF1: pygi_callable_info_invoke (pygi-invoke.c:36)
==12543==    by 0x11A3892D: _callable_info_call (pygi-info.c:556)
==12543==    by 0x10EAB207: PyObject_Call (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10E900B8: PyEval_EvalFrameEx (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10E93C14: PyEval_EvalFrameEx (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EC17C5: PyEval_EvalCodeEx (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EC1DF5: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EAB207: PyObject_Call (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10DBE8CC: ??? (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EAB207: PyObject_Call (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x10EAAD16: PyEval_CallObjectWithKeywords (in /usr/lib/x86_64-linux-gnu/libpython3.4m.so.1.0)
==12543==    by 0x11A42267: pygi_signal_closure_marshal (pygi-signal-closure.c:148)
==12543==    by 0x7449017: g_closure_invoke (gclosure.c:768)
==12543==    by 0x745B42C: signal_emit_unlocked_R (gsignal.c:3551)
==12543==    by 0x7463448: g_signal_emit_valist (gsignal.c:3307)
==12543==    by 0x7463701: g_signal_emit (gsignal.c:3363)
==12543==    by 0x565779C: gtk_button_do_release (gtkbutton.c:1987)
==12543==    by 0x56577F5: gtk_real_button_released (gtkbutton.c:2105)
==12543==    by 0x7449246: _g_closure_invoke_va (gclosure.c:831)
==12543==    by 0x7462AA7: g_signal_emit_valist (gsignal.c:3215)
==12543==    by 0x7463701: g_signal_emit (gsignal.c:3363)
==12543==    by 0x5655B8C: gtk_button_button_release (gtkbutton.c:1942)
==12543==    by 0x573E01D: _gtk_marshal_BOOLEAN__BOXEDv (gtkmarshalers.c:130)
