My traces, created, by the time the game has frozen, using:
LANG=C sudo gdb -q -n -ex 'bt' -batch ./freedroidRPG `pgrep freedroid` >
/tmp/freedroid 2>&1

(1)
[New LWP 18220]
[New LWP 18218]
[New LWP 18217]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__lll_lock_wait_private () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:93
93	../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: No such file or directory.
#0  __lll_lock_wait_private () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:93
#1  0x00007fd650aa2231 in _L_lock_10656 () at malloc.c:5220
#2  0x00007fd650a9ffb7 in __GI___libc_malloc (bytes=140558456411968) at
malloc.c:2921
#3  0x00007fd6522bb910 in _dl_map_object_deps (map=0x3e7b820,
preloads=<optimized out>, npreloads=<optimized out>, trace_mode=0,
open_mode=-2147483648) at dl-deps.c:517
#4  0x00007fd6522c18b9 in dl_open_worker (a=0x7fff812763f0) at dl-open.c:262
#5  0x00007fd6522bd186 in _dl_catch_error (objname=0x7fff81276438,
errstring=0x7fff81276440, mallocedp=0x7fff8127644f, operate=0x7fd6522c1710
<dl_open_worker>, args=0x7fff812763f0) at dl-error.c:178
#6  0x00007fd6522c132a in _dl_open (file=0x7fd650b962b8 "libgcc_s.so.1",
mode=-2147483647, caller_dlopen=0x7fd650b27925 <init+21>, nsid=-2, argc=1,
argv=<optimized out>, env=0x3e4f8c0) at dl-open.c:639
#7  0x00007fd650b4d632 in do_dlopen (ptr=0x7fff812765f0) at dl-libc.c:89
#8  0x00007fd6522bd186 in _dl_catch_error (objname=0x7fff81276620,
errstring=0x7fff81276610, mallocedp=0x7fff8127662f, operate=0x7fd650b4d5f0
<do_dlopen>, args=0x7fff812765f0) at dl-error.c:178
#9  0x00007fd650b4d6f4 in dlerror_run (args=0x7fff812765f0,
operate=0x7fd650b4d5f0 <do_dlopen>) at dl-libc.c:48
#10 __GI___libc_dlopen_mode (name=<optimized out>, mode=<optimized out>) at
dl-libc.c:165
#11 0x00007fd650b27925 in init () at ../sysdeps/x86_64/../ia64/backtrace.c:53
#12 0x00007fd650de9400 in pthread_once () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S:104
#13 0x00007fd650b27a44 in __GI___backtrace (array=<optimized out>, size=64) at
../sysdeps/x86_64/../ia64/backtrace.c:104
#14 0x00007fd650a913af in __libc_message (do_abort=2, fmt=0x7fd650b9b028 "***
glibc detected *** %s: %s: 0x%s ***\n") at
../sysdeps/unix/sysv/linux/libc_fatal.c:180
#15 0x00007fd650a9bb96 in malloc_printerr (action=3, str=0x7fd650b97916
"corrupted double-linked list", ptr=<optimized out>) at malloc.c:5018
#16 0x00007fd650a9e650 in _int_malloc (av=0x7fd650dd5740 <main_arena>,
bytes=1024) at malloc.c:3806
#17 0x00007fd650a9ffc5 in __GI___libc_malloc (bytes=bytes@entry=1024) at
malloc.c:2924
#18 0x00000000004189ba in RunSubMenu (startup=startup@entry=0,
menu_id=menu_id@entry=1) at menu.c:727
#19 0x0000000000419c8e in RunMenu (is_startup=0) at menu.c:764
#20 EscapeMenu () at menu.c:775
#21 0x000000000044c988 in input_key (keynum=keynum@entry=40, value=1) at
keyboard.c:678
#22 0x000000000044c9e7 in input_key_event (mod=KMOD_NONE, key=SDLK_ESCAPE,
value=<optimized out>) at keyboard.c:812
#23 input_key_press (event=event@entry=0x7fff812778e0) at keyboard.c:820
#24 0x000000000044ab08 in input_handle () at input.c:119
#25 0x000000000044d3e9 in Game () at main.c:89
#26 0x000000000041642a in main (argc=1, argv=<optimized out>) at main.c:182

(2)
[New LWP 26944]
[New LWP 26942]
[New LWP 26941]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__lll_lock_wait_private () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:93
93	../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: No such file or directory.
#0  __lll_lock_wait_private () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:93
#1  0x00007f6ed02e2231 in _L_lock_10656 () at malloc.c:5220
#2  0x00007f6ed02dffb7 in __GI___libc_malloc (bytes=140113919170368) at
malloc.c:2921
#3  0x00007f6ed1afb910 in _dl_map_object_deps (map=0x41c1810,
preloads=<optimized out>, npreloads=<optimized out>, trace_mode=0,
open_mode=-2147483648) at dl-deps.c:517
#4  0x00007f6ed1b018b9 in dl_open_worker (a=0x7fff1c1e3a40) at dl-open.c:262
#5  0x00007f6ed1afd186 in _dl_catch_error (objname=0x7fff1c1e3a88,
errstring=0x7fff1c1e3a90, mallocedp=0x7fff1c1e3a9f, operate=0x7f6ed1b01710
<dl_open_worker>, args=0x7fff1c1e3a40) at dl-error.c:178
#6  0x00007f6ed1b0132a in _dl_open (file=0x7f6ed03d62b8 "libgcc_s.so.1",
mode=-2147483647, caller_dlopen=0x7f6ed0367925 <init+21>, nsid=-2, argc=1,
argv=<optimized out>, env=0x41958b0) at dl-open.c:639
#7  0x00007f6ed038d632 in do_dlopen (ptr=0x7fff1c1e3c40) at dl-libc.c:89
#8  0x00007f6ed1afd186 in _dl_catch_error (objname=0x7fff1c1e3c70,
errstring=0x7fff1c1e3c60, mallocedp=0x7fff1c1e3c7f, operate=0x7f6ed038d5f0
<do_dlopen>, args=0x7fff1c1e3c40) at dl-error.c:178
#9  0x00007f6ed038d6f4 in dlerror_run (args=0x7fff1c1e3c40,
operate=0x7f6ed038d5f0 <do_dlopen>) at dl-libc.c:48
#10 __GI___libc_dlopen_mode (name=<optimized out>, mode=<optimized out>) at
dl-libc.c:165
#11 0x00007f6ed0367925 in init () at ../sysdeps/x86_64/../ia64/backtrace.c:53
#12 0x00007f6ed0629400 in pthread_once () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S:104
#13 0x00007f6ed0367a44 in __GI___backtrace (array=<optimized out>, size=64) at
../sysdeps/x86_64/../ia64/backtrace.c:104
#14 0x00007f6ed02d13af in __libc_message (do_abort=2, fmt=0x7f6ed03db028 "***
glibc detected *** %s: %s: 0x%s ***\n") at
../sysdeps/unix/sysv/linux/libc_fatal.c:180
#15 0x00007f6ed02dbb96 in malloc_printerr (action=3, str=0x7f6ed03d7916
"corrupted double-linked list", ptr=<optimized out>) at malloc.c:5018
#16 0x00007f6ed02de650 in _int_malloc (av=0x7f6ed0615740 <main_arena>,
bytes=5120) at malloc.c:3806
#17 0x00007f6ed02dffc5 in __GI___libc_malloc (bytes=5120) at malloc.c:2924
#18 0x0000000000492381 in luaM_realloc_ ()
#19 0x000000000049769e in luaH_resize ()
#20 0x0000000000497a9e in luaH_newkey ()
#21 0x000000000049ef1a in luaX_newstring ()
#22 0x000000000049fcc7 in llex ()
#23 0x000000000049fe19 in luaX_next ()
#24 0x0000000000493853 in str_checkname ()
#25 0x0000000000493943 in singlevar ()
#26 0x0000000000494365 in suffixedexp ()
#27 0x00000000004951c0 in subexpr ()
#28 0x00000000004959b4 in explist ()
#29 0x00000000004940fa in funcargs ()
#30 0x0000000000494359 in suffixedexp ()
#31 0x000000000049440c in statement ()
#32 0x0000000000494e77 in statlist ()
#33 0x0000000000495fbc in test_then_block ()
#34 0x00000000004947ad in statement ()
#35 0x0000000000494e77 in statlist ()
#36 0x0000000000495fbc in test_then_block ()
#37 0x00000000004947ad in statement ()
#38 0x0000000000494e77 in statlist ()
#39 0x0000000000495fbc in test_then_block ()
#40 0x00000000004947ad in statement ()
#41 0x0000000000494e77 in statlist ()
#42 0x000000000049618e in luaY_parser ()
#43 0x000000000048ee53 in f_parser ()
#44 0x000000000048ef4b in luaD_rawrunprotected ()
#45 0x000000000048fb25 in luaD_pcall ()
#46 0x000000000048fc1a in luaD_protectedparser ()
#47 0x000000000048d847 in lua_load ()
#48 0x000000000049c71a in luaL_loadbufferx ()
#49 0x0000000000428a05 in load_lua_coroutine (target=target@entry=LUA_DIALOG,
code=0x6e78e00 "\n\tbranch_to_pendragon = false\n\tshow(90)\n\tif
(Koan_murdered) then\n\t\tnpc_says(_\"You just killed
him!\")\n\t\tnpc_says(_\"How could you?\")\n\t\tnpc_says(_\"You
murderer!\")\n\t\tnpc_faction(\"crazy\", _\"Tania - Avengin"...) at lua.c:1381
#50 0x000000000045aeeb in run_chat () at chat.c:883
#51 ChatWithFriendlyDroid (ChatDroid=<optimized out>) at chat.c:966
#52 0x000000000043ed9c in check_for_droids_to_attack_or_talk_with () at influ.c:1556
#53 0x000000000043f5fb in AnalyzePlayersMouseClick () at influ.c:1647
#54 move_tux () at influ.c:743
#55 0x000000000044d41f in Game () at main.c:106
#56 0x000000000041642a in main (argc=1, argv=<optimized out>) at main.c:182