StacktraceTop: __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f3650c54358 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175 malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7f3650c54488 "double free or corruption (!prev)", action=3) at malloc.c:5046 _int_free (av=<optimized out>, p=<optimized out>, have_lock=<optimized out>) at malloc.c:3902 __GI___libc_free (mem=<optimized out>) at malloc.c:2982 XDestroyRegion (r=0x56024f13b360) at ../../src/Region.c:287
StacktraceTop: do_abort@ entry=2, fmt=fmt@ entry=0x7f3650c 54358 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/ posix/libc_ fatal.c: 175 <optimized out>) at malloc.c:3902 Region. c:287
__libc_message (do_abort=
malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7f3650c54488 "double free or corruption (!prev)", action=3) at malloc.c:5046
_int_free (av=<optimized out>, p=<optimized out>, have_lock=
__GI___libc_free (mem=<optimized out>) at malloc.c:2982
XDestroyRegion (r=0x56024f13b360) at ../../src/