Thread 17 (Thread 0x7fbaa0ff9700 (LWP 15494)):
#0  0x000000000043c63a in lczero::SearchWorker::PickNodeToExtend() ()
#1  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#2  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
#3  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#4  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007fbad0db36ba in start_thread (arg=0x7fbaa0ff9700)
    at pthread_create.c:333
#6  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fbaa17fa700 (LWP 15493)):
#0  0x00007fbad0db9028 in futex_wake (private=<optimized out>,
    processes_to_wake=1, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:231
#1  __GI___pthread_rwlock_unlock (rwlock=0x180b3c0)
    at pthread_rwlock_unlock.c:58
#2  0x000000000043c5e8 in lczero::SearchWorker::PickNodeToExtend() ()
#3  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#4  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
#5  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::S---Type <return> to continue, or q <return> to quit---
tartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#6  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007fbad0db36ba in start_thread (arg=0x7fbaa17fa700)
    at pthread_create.c:333
#8  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fbaa1ffb700 (LWP 15492)):
#0  0x00007fbad0db9028 in futex_wake (private=<optimized out>,
    processes_to_wake=1, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:231
#1  __GI___pthread_rwlock_unlock (rwlock=0x180b3c0)
    at pthread_rwlock_unlock.c:58
#2  0x000000000043c5e8 in lczero::SearchWorker::PickNodeToExtend() ()
#3  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#4  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
#5  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#6  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007fbad0db36ba in start_thread (arg=0x7fbaa1ffb700)
    at pthread_create.c:333
#8  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
---Type <return> to continue, or q <return> to quit---

Thread 14 (Thread 0x7fbaa27fc700 (LWP 15491)):
#0  0x00007fbad0db80cc in futex_wait (private=<optimized out>, expected=0,
    futex_word=0x180b3c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1  futex_wait_simple (private=<optimized out>, expected=0,
    futex_word=0x180b3c8) at ../sysdeps/nptl/futex-internal.h:135
#2  __pthread_rwlock_rdlock_slow (rwlock=0x180b3c0)
    at pthread_rwlock_rdlock.c:68
#3  0x000000000043c278 in lczero::SearchWorker::MaybePrefetchIntoCache() ()
#4  0x000000000043dfd4 in lczero::SearchWorker::ExecuteOneIteration() ()
#5  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#6  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007fbad0db36ba in start_thread (arg=0x7fbaa27fc700)
    at pthread_create.c:333
#8  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fbaa2ffd700 (LWP 15490)):
#0  0x00007fbad0db8730 in futex_wait (private=<optimized out>,
    expected=262938137, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1  futex_wait_simple (private=<optimized out>, expected=262938137,
---Type <return> to continue, or q <return> to quit---
    futex_word=0x180b3cc) at ../sysdeps/nptl/futex-internal.h:135
#2  __pthread_rwlock_wrlock_slow (rwlock=0x180b3c0)
    at pthread_rwlock_wrlock.c:67
#3  0x000000000043c35f in lczero::SearchWorker::PickNodeToExtend() ()
#4  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#5  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
#6  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#7  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007fbad0db36ba in start_thread (arg=0x7fbaa2ffd700)
    at pthread_create.c:333
#9  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fbaa37fe700 (LWP 15489)):
#0  0x00007fbad0db8730 in futex_wait (private=<optimized out>,
    expected=262938120, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1  futex_wait_simple (private=<optimized out>, expected=262938120,
    futex_word=0x180b3cc) at ../sysdeps/nptl/futex-internal.h:135
#2  __pthread_rwlock_wrlock_slow (rwlock=0x180b3c0)
    at pthread_rwlock_wrlock.c:67
#3  0x000000000043c35f in lczero::SearchWorker::PickNodeToExtend() ()
---Type <return> to continue, or q <return> to quit---
#4  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#5  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
#6  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#7  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007fbad0db36ba in start_thread (arg=0x7fbaa37fe700)
    at pthread_create.c:333
#9  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fbaa3fff700 (LWP 15488)):
#0  0x00007fbad0db8730 in futex_wait (private=<optimized out>,
    expected=262938042, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1  futex_wait_simple (private=<optimized out>, expected=262938042,
    futex_word=0x180b3cc) at ../sysdeps/nptl/futex-internal.h:135
#2  __pthread_rwlock_wrlock_slow (rwlock=0x180b3c0)
    at pthread_rwlock_wrlock.c:67
#3  0x000000000043c35f in lczero::SearchWorker::PickNodeToExtend() ()
#4  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#5  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
#6  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
---Type <return> to continue, or q <return> to quit---
#7  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007fbad0db36ba in start_thread (arg=0x7fbaa3fff700)
    at pthread_create.c:333
#9  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fbac09c4700 (LWP 15487)):
#0  0x00007fbad0db9028 in futex_wake (private=<optimized out>,
    processes_to_wake=1, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:231
#1  __GI___pthread_rwlock_unlock (rwlock=0x180b3c0)
    at pthread_rwlock_unlock.c:58
#2  0x000000000043c5e8 in lczero::SearchWorker::PickNodeToExtend() ()
#3  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#4  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
#5  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#6  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007fbad0db36ba in start_thread (arg=0x7fbac09c4700)
    at pthread_create.c:333
#8  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

---Type <return> to continue, or q <return> to quit---
Thread 9 (Thread 0x7fbac11c5700 (LWP 15486)):
#0  0x00007fbad0db9028 in futex_wake (private=<optimized out>,
    processes_to_wake=1, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:231
#1  __GI___pthread_rwlock_unlock (rwlock=0x180b3c0)
    at pthread_rwlock_unlock.c:58
#2  0x000000000043dc79 in lczero::Search::MaybeTriggerStop() ()
#3  0x000000000043e013 in lczero::SearchWorker::ExecuteOneIteration() ()
#4  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#5  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x00007fbad0db36ba in start_thread (arg=0x7fbac11c5700)
    at pthread_create.c:333
#7  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fbac19c6700 (LWP 15485)):
#0  0x00007fbad0db8730 in futex_wait (private=<optimized out>,
    expected=262938048, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1  futex_wait_simple (private=<optimized out>, expected=262938048,
    futex_word=0x180b3cc) at ../sysdeps/nptl/futex-internal.h:135
#2  __pthread_rwlock_wrlock_slow (rwlock=0x180b3c0)
---Type <return> to continue, or q <return> to quit---
    at pthread_rwlock_wrlock.c:67
#3  0x000000000043c35f in lczero::SearchWorker::PickNodeToExtend() ()
#4  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#5  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
#6  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#7  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007fbad0db36ba in start_thread (arg=0x7fbac19c6700)
    at pthread_create.c:333
#9  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fbac21c7700 (LWP 15484)):
#0  0x00007fbad0db8730 in futex_wait (private=<optimized out>,
    expected=262937962, futex_word=0x180b3cc)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1  futex_wait_simple (private=<optimized out>, expected=262937962,
    futex_word=0x180b3cc) at ../sysdeps/nptl/futex-internal.h:135
#2  __pthread_rwlock_wrlock_slow (rwlock=0x180b3c0)
    at pthread_rwlock_wrlock.c:67
#3  0x000000000043c35f in lczero::SearchWorker::PickNodeToExtend() ()
#4  0x000000000043ca11 in lczero::SearchWorker::GatherMinibatch() ()
#5  0x000000000043dfcc in lczero::SearchWorker::ExecuteOneIteration() ()
---Type <return> to continue, or q <return> to quit---
#6  0x000000000043e7ed in std::thread::_Impl<std::_Bind_simple<lczero::Search::StartThreads(unsigned long)::{lambda()#1} ()> >::_M_run() ()
#7  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007fbad0db36ba in start_thread (arg=0x7fbac21c7700)
    at pthread_create.c:333
#9  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fbac29c8700 (LWP 15483)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fbad046091c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2  0x000000000044ecc7 in std::thread::_Impl<std::_Bind_simple<lczero::(anonymous namespace)::MuxingNetwork::AddBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, lczero::Weights const&, lczero::OptionsDict const&)::{lambda()#1} ()> >::_M_run() ()
#3  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fbad0db36ba in start_thread (arg=0x7fbac29c8700)
    at pthread_create.c:333
#5  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

---Type <return> to continue, or q <return> to quit---
Thread 5 (Thread 0x7fbac31c9700 (LWP 15482)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fbad046091c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2  0x000000000044ecc7 in std::thread::_Impl<std::_Bind_simple<lczero::(anonymous namespace)::MuxingNetwork::AddBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, lczero::Weights const&, lczero::OptionsDict const&)::{lambda()#1} ()> >::_M_run() ()
#3  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fbad0db36ba in start_thread (arg=0x7fbac31c9700)
    at pthread_create.c:333
#5  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fbac39ca700 (LWP 15481)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fbad046091c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2  0x000000000044ecc7 in std::thread::_Impl<std::_Bind_simple<lczero::(anonymous namespace)::MuxingNetwork::AddBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, lczero::Weights const&, lczero::---Type <return> to continue, or q <return> to quit---
OptionsDict const&)::{lambda()#1} ()> >::_M_run() ()
#3  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fbad0db36ba in start_thread (arg=0x7fbac39ca700)
    at pthread_create.c:333
#5  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fbac41cb700 (LWP 15480)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fbad046091c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2  0x000000000044ecc7 in std::thread::_Impl<std::_Bind_simple<lczero::(anonymous namespace)::MuxingNetwork::AddBackend(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, lczero::Weights const&, lczero::OptionsDict const&)::{lambda()#1} ()> >::_M_run() ()
#3  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007fbad0db36ba in start_thread (arg=0x7fbac41cb700)
    at pthread_create.c:333
#5  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fbacf8bf700 (LWP 15478)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007fbad0dbcc1d in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x000000000042a17a in std::thread::_Impl<std::_Bind_simple<lczero::(anonymous namespace)::NodeGarbageCollector::NodeGarbageCollector()::{lambda()#1} ()> >::_M_run() ()
#2  0x00007fbad0465c80 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007fbad0db36ba in start_thread (arg=0x7fbacf8bf700)
    at pthread_create.c:333
#4  0x00007fbacfbcb41d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fbad13de740 (LWP 15477)):
#0  0x00007fbacfbbb27d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fbacfb3e5e8 in _IO_new_file_underflow (
    fp=0x7fbacfe888e0 <_IO_2_1_stdin_>) at fileops.c:592
#2  0x00007fbacfb3f60e in __GI__IO_default_uflow (
    fp=0x7fbacfe888e0 <_IO_2_1_stdin_>) at genops.c:413
#3  0x00007fbacfb3a108 in _IO_getc (fp=0x7fbacfe888e0 <_IO_2_1_stdin_>)
    at getc.c:38
#4  0x00007fbad0496b4d in __gnu_cxx::stdio_sync_filebuf<char, std::char_traits<char> >::underflow() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007fbad0453b7a in std::basic_istream<char, std::char_traits<char> >& std::getline<char, std::char_traits<char>, std::allocator<char> >(std::basic_istream<char, std::char_traits<char> >&, std::__cxx11::basic_string<char, std::char_tr---Type <return> to continue, or q <return> to quit---
aits<char>, std::allocator<char> >&, char) ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x00000000004262d3 in lczero::UciLoop::RunLoop() ()
#7  0x00000000004052fa in main ()