#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
        set = {__val = {0 <repeats 15 times>, 15349158066782240512}}
        pid = <optimized out>
        tid = <optimized out>
#1  0x00007f99d0da2f5d in __GI_abort () at abort.c:90
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {3419200191581875311, 7016450337241329012, 140298611303614, 7309449360350081904, 8181, 6, 46674914728, 140736918630048, 140736918629600, 140298614480000, 140736918629975, 94687745335984, 140736918629536, 0, 140736918629568, 140736918630176}}, sa_flags = 4096, sa_restorer = 0x14}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f99d0deb28d in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f99d0f124e8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:181
        ap = {{gp_offset = 40, fp_offset = 50, overflow_arg_area = 0x7fffde0aaf30, reg_save_area = 0x7fffde0aaec0}}
        fd = <optimized out>
        list = <optimized out>
        nlist = <optimized out>
        cp = <optimized out>
        written = <optimized out>
#3  0x00007f99d0df264a in malloc_printerr (action=<optimized out>, str=0x7f99d0f0ee6e "free(): invalid pointer", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:5425
        buf = "0000561e356cc784"
        cp = <optimized out>
        ar_ptr = <optimized out>
        ptr = <optimized out>
        str = 0x7f99d0f0ee6e "free(): invalid pointer"
        action = <optimized out>
#4  0x00007f99d0df473e in _int_free (av=0x7f99d1144c20 <main_arena>, p=<optimized out>, have_lock=0) at malloc.c:4174
        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>
#5  0x00007f99d0df93fe in __GI___libc_free (mem=<optimized out>) at malloc.c:3144
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = <optimized out>
#6  0x0000561e33665f9c in ?? ()
No symbol table info available.
#7  0x0000561e336689d9 in ?? ()
No symbol table info available.
#8  0x0000561e3367101b in ?? ()
No symbol table info available.
#9  0x00007f99d0da5ec0 in __run_exit_handlers (status=1, listp=0x7f99d11446f8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at exit.c:83
        atfct = <optimized out>
        onfct = <optimized out>
        cxafct = <optimized out>
        f = <optimized out>
#10 0x00007f99d0da5f1a in __GI_exit (status=<optimized out>) at exit.c:105
No locals.
#11 0x00007f99d0d8b1c8 in __libc_start_main (main=0x561e33662300, argc=6, argv=0x7fffde0ab1b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffde0ab1a8) at ../csu/libc-start.c:342
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2805769376152750469, 94687711339440, 140736918630832, 0, 0, 8445307838227614085, 8502759949348309381}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7fffde0ab1f0, 0x7f99d245b150}, data = {prev = 0x0, cleanup = 0x0, canceltype = -569724432}}}
        not_first_call = <optimized out>
#12 0x0000561e336623da in ?? ()
No symbol table info available.