.
Thread 3 (Thread 0x7f8cacbcb700 (LWP 1774)):
#0  0x00007f8cb826b951 in __GI___poll (fds=0x7f8ca0010030, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007f8cb87ad169 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f8cb87ad502 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f8cb8d96b26 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f8cb87d4645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f8cb854a7fc in start_thread (arg=0x7f8cacbcb700) at pthread_create.c:465
        pd = 0x7f8cacbcb700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140242170197760, 7609218524407201394, 140242178586894, 140242178586895, 140242170197760, 140242170198464, -7602068921453314446, -7602024184950227342}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
        frame = <optimized out>
#6  0x00007f8cb8277b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 2 (Thread 0x7f8cadbcd700 (LWP 1772)):
#0  0x00007f8cb826b951 in __GI___poll (fds=0x55db0d8ebde0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007f8cb87ad169 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f8cb87ad27c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f8cb87ad2c1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f8cb87d4645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f8cb854a7fc in start_thread (arg=0x7f8cadbcd700) at pthread_create.c:465
        pd = 0x7f8cadbcd700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140242186983168, 7609218524407201394, 140727412130046, 140727412130047, 140242186983168, 140242186983872, -7602071123697795470, -7602024184950227342}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
        frame = <optimized out>
#6  0x00007f8cb8277b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
.
Thread 1 (Thread 0x7f8cbaf55f80 (LWP 1759)):
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0, 4, 140727412128112, 140727412127984, 140242370184400, 140242370191261, 0, 136, 2, 140242367133252, 128, 11098256705100783872, 94399313583392, 94399313722432, 64, 11098256705100783872}}
        pid = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
#1  0x00007f8cb819bf5d in __GI_abort () at abort.c:90
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7ffda768f970, sa_sigaction = 0x7ffda768f970}, sa_mask = {__val = {94399313687888, 140727412128208, 140727412128480, 94399313689888, 140242370357328, 140727412128480, 140727412128208, 140727412128608, 140242370303229, 0, 0, 0, 0, 0, 140727412128208, 140727412128816}}, sa_flags = 4096, sa_restorer = 0x14}
        sigs = {__val = {32, 0 <repeats 15 times>}}
        __cnt = <optimized out>
        __set = <optimized out>
        __cnt = <optimized out>
        __set = <optimized out>
#2  0x00007f8cb81e428d in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f8cb830b528 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:181
        ap = {{gp_offset = 40, fp_offset = 21979, overflow_arg_area = 0x7ffda768fc40, reg_save_area = 0x7ffda768fbd0}}
        fd = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
        written = <optimized out>
#3  0x00007f8cb81eb64a in malloc_printerr (action=<optimized out>, str=0x7f8cb830b940 "double free or corruption (fasttop)", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:5426
        buf = "000055db0d876210"
        cp = <optimized out>
        ar_ptr = <optimized out>
        ptr = <optimized out>
        str = 0x7f8cb830b940 "double free or corruption (fasttop)"
        action = <optimized out>
        buf = <optimized out>
        cp = <optimized out>
#4  0x00007f8cb81ed73e in _int_free (av=0x7f8cb853dc20 <main_arena>, p=<optimized out>, have_lock=0) at malloc.c:4175
        size = <optimized out>
        fb = <optimized out>
        nextchunk = <optimized out>
        nextsize = <optimized out>
        nextinuse = <optimized out>
        prevsize = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
        errstr = <optimized out>
        locked = <optimized out>
        ignore = <optimized out>
        tc_idx = <optimized out>
        idx = <optimized out>
        old = <optimized out>
        old2 = <optimized out>
        old_idx = <optimized out>
        ignore1 = <optimized out>
        ignore2 = <optimized out>
        ignore3 = <optimized out>
        ignore = <optimized out>
        __atg1_result = <optimized out>
        ret = <optimized out>
        ret = <optimized out>
        ret = <optimized out>
        ret = <optimized out>
        ignore1 = <optimized out>
        ignore2 = <optimized out>
        ignore3 = <optimized out>
        heap = <optimized out>
        ignore = <optimized out>
#5  0x00007f8cb81f244e in __GI___libc_free (mem=<optimized out>) at malloc.c:3145
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = <optimized out>
        __x = <optimized out>
#6  0x000055db0d1a5950 in ?? ()
No symbol table info available.
#7  0x00007f8cb2813dae in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
No symbol table info available.
#8  0x00007f8cb281371f in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
No symbol table info available.
#9  0x00007f8cb8a86799 in g_cclosure_marshal_generic () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#10 0x00007f8cb8a85f9d in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#11 0x00007f8cb8a98cde in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#12 0x00007f8cb8aa0a20 in g_signal_emitv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#13 0x000055db0d1a3509 in ?? ()
No symbol table info available.
#14 0x00007f8cb8d9f0d7 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#15 0x00007f8cb8d873cc in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#16 0x00007f8cb87ace25 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#17 0x00007f8cb87ad1f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#18 0x00007f8cb87ad502 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#19 0x00007f8cba276455 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
No symbol table info available.
#20 0x000055db0d1a1759 in ?? ()
No symbol table info available.
#21 0x00007f8cb81841c1 in __libc_start_main (main=0x55db0d1a1670, argc=1, argv=0x7ffda7690888, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffda7690878) at ../csu/libc-start.c:308
        self = <optimized out>
        __self = <optimized out>
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -4454264695259595150, 94399306012688, 140727412131968, 0, 0, -7610501467904082318, -7602023539407913358}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffda7690898, 0x7f8cbafa9150}, data = {prev = 0x0, cleanup = 0x0, canceltype = -1486288744}}}
        not_first_call = <optimized out>
#22 0x000055db0d1a183a in ?? ()
No symbol table info available.