[ 0:01]   | load /var/obj/xrockai-divine-next-staging/semidbg/test/_expand/dios/fairness.pkg.cpp/unfair.cpp unfair.cpp
[ 0:01]   | expect --result error --location unfair.cpp:37
[ 0:01]   | cc -o testcase.bc -std=c++14 unfair.cpp
[ 0:01]   | verify --max-memory 4GiB --max-time 600 --threads 2 --report-filename verify.out --leakcheck exit --dios-config default --liveness -o nofail:malloc testcase.bc
[ 0:01] compiling unfair.cpp
[ 0:01] loading bitcode … DiOS … LART … RR … constants … done
[ 0:08] booting … done
[ 0:08] states per second: 473.684
[ 0:08] state count: 18
[ 0:08] mips: 0.33
[ 0:08] 
[ 0:08] error found: yes
[ 0:08] error trace: |
[ 0:08]   (0) Monitor registered
[ 0:08]   W: pointer-dependent operation with [heap* 65fbc4d5 0 ddp] and [heap* ce719923 0 ddp] in debug mode (abandoned)
[ 0:08]   W: pointer-dependent operation with [heap* ce719923 0 ddp] and [heap* 65fbc4d5 0 ddp] in debug mode (abandoned)
[ 0:08]   W: pointer-dependent operation with [heap* ce719923 0 ddp] and [heap* 65fbc4d5 0 ddp] in debug mode (abandoned)
[ 0:08]   W: pointer-dependent operation with [heap* 65fbc4d5 0 ddp] and [heap* ce719923 0 ddp] in debug mode (abandoned)
[ 0:08]   W: pointer-dependent operation with [heap* 65fbc4d5 0 ddp] and [heap* ce719923 0 ddp] in debug mode (abandoned)
[ 0:08]   W: pointer-dependent operation with [heap* ce719923 0 ddp] and [heap* 65fbc4d5 0 ddp] in debug mode (abandoned)
[ 0:08]   W: pointer-dependent operation with [heap* ce719923 0 ddp] and [heap* 65fbc4d5 0 ddp] in debug mode (abandoned)
[ 0:08] 
[ 0:08] stack 1:
[ 0:09]   - symbol: main
[ 0:09]     location: /dios/libcxx/include/atomic:957
[ 0:09]   - symbol: __dios_start
[ 0:09]     location: /dios/libc/sys/start.cpp:94
[ 0:09] stack 2:
[ 0:09]   - symbol: main::$_0::operator()() const
[ 0:09]     location: unfair.cpp:70
[ 0:09]   - symbol: void* std::__2::__thread_proxy<std::__2::tuple<std::__2::unique_ptr<std::__2::__thread_struct, std::__2::default_delete<std::__2::__thread_struct> >, main::$_0> >(void*)
[ 0:09]     location: /dios/libcxx/include/type_traits:3530
[ 0:09]   - symbol: __pthread_start
[ 0:09]     location: /dios/libc/pthread/pthread-init.cpp:79
[ 0:09]   - symbol: __pthread_entry
[ 0:09]     location: /dios/libc/pthread/pthread-core.cpp:50
[ 0:09] active stack:
[ 0:09]   - symbol: __buchi_accept()
[ 0:10]     location: unfair.cpp:54
[ 0:10]   - symbol: BuchiAutomaton::step()
[ 0:10]     location: unfair.cpp:37
[ 0:10]   - symbol: __dios::MonitorManager<__dios::BaseContext>::runMonitors()
[ 0:10]     location: /dios/include/sys/monitor.h:33
[ 0:10]   - symbol: void __dios::Scheduler<__dios::Clock<__dios::NondetChoose<__dios::Base> > >::run_scheduler<__dios::Context>()
[ 0:10]     location: /dios/sys/sched_base.hpp:442
[ 0:10] + divine sim --batch --skip-init --load-report verify.out
[ 0:10] 
[ 0:14]            ^       —————.   —.—  .     .  —.—  .     .  .—————    .    .
[ 0:14]           ———      |     |   |   |     |   |   |\    |  |         |    |
[ 0:14]          —(o)—     |     |   |   |     |   |   |  \  |  |————     '————|
[ 0:14]         ———————    |     |   |    \   /    |   |    \|  |              |
[ 0:14]        —————————   —————'   —'—     '     —'—  '     '  '—————         '
[ 0:14] 
[ 0:14] Welcome to 'divine sim', an interactive debugger. Type 'help' to get started.
[ 0:14] traced states:
[ 0:15] trace:
[ 0:15] T: (0) Monitor registered
[ 0:15] T: W: pointer-dependent operation with [heap* 65fbc4d5 0 ddp] and [heap* ce719923 0 ddp] in debug mode (abandoned)
[ 0:15] T: W: pointer-dependent operation with [heap* ce719923 0 ddp] and [heap* 65fbc4d5 0 ddp] in debug mode (abandoned)
[ 0:15] T: W: pointer-dependent operation with [heap* ce719923 0 ddp] and [heap* 65fbc4d5 0 ddp] in debug mode (abandoned)
[ 0:15] T: W: pointer-dependent operation with [heap* 65fbc4d5 0 ddp] and [heap* ce719923 0 ddp] in debug mode (abandoned)
[ 0:15] T: W: pointer-dependent operation with [heap* 65fbc4d5 0 ddp] and [heap* ce719923 0 ddp] in debug mode (abandoned)
[ 0:15] T: W: pointer-dependent operation with [heap* ce719923 0 ddp] and [heap* 65fbc4d5 0 ddp] in debug mode (abandoned)
[ 0:15] T: W: pointer-dependent operation with [heap* ce719923 0 ddp] and [heap* 65fbc4d5 0 ddp] in debug mode (abandoned)
[ 0:15] ▶ state   #11 [new] -- active threads: [0:0] 0:1 --
[ 0:15] # executing __buchi_accept() at unfair.cpp:55
[ 0:15] # NOTE: $frame in BuchiAutomaton::step()
[ 0:15] > backtrace
[ 0:15]   __buchi_accept() at unfair.cpp:55
[ 0:15]   BuchiAutomaton::step() at unfair.cpp:37
[ 0:15]   {Monitor}::runMonitors() at /dios/include/sys/monitor.h:33
[ 0:15]   void {Scheduler}::run_scheduler<{Context}>() at /dios/sys/sched_base.hpp:442
[ 0:15] # backtrace 1:
[ 0:15]   main at /dios/libcxx/include/atomic:957
[ 0:15]   __dios_start at /dios/libc/sys/start.cpp:94
[ 0:15] # backtrace 2:
[ 0:15]   main::$_0::operator()() const at unfair.cpp:70
[ 0:15]   void* std::__2::__thread_proxy<std::__2::tuple<std::__2::unique_ptr<std::__2::__thread_struct, std::__2::default_delete<std::__2::__thread_struct> >, main::$_0> >(void*) at /dios/libcxx/include/type_traits:3530
[ 0:15]   __pthread_start at /dios/libc/pthread/pthread-init.cpp:79
[ 0:15]   __pthread_entry at /dios/libc/pthread/pthread-core.cpp:50
[ 0:15] # executing __buchi_accept() at unfair.cpp:55
[ 0:15] # NOTE: $frame in BuchiAutomaton::step()