[ 0:01] --symbolic -o nofail:malloc
[ 0:01] compiling /home/xrockai/src/divine/nightly/test/svcomp/memsafety/test-0232_false-valid-free.c
[ 0:01] states per second: 17.4672
[ 0:43] state count: 4
[ 0:43] mips: 0.095
[ 0:43] symbolic: 1
[ 0:43] 
[ 0:43] error found: yes
[ 0:43] error trace: |
[ 0:43]   ASSUME (not (= var_0 #x00000000))
[ 0:43]   ASSUME (not (not (= var_1 #x00000000)))
[ 0:43]   FAULT: invalid pointer passed to __vm_obj_free
[ 0:43]   [0] FATAL: memory error in userspace
[ 0:43] 
[ 0:43] active stack:
[ 0:43]   - symbol: void __dios::Fault<__dios::Scheduler<__dios::MachineParams<__dios::MonitorManager<__dios::BaseContext> > > >::handler<__dios::fs::VFS<__dios::ProcessManager<__dios::Fault<__dios::Scheduler<__dios::MachineParams<__dios::MonitorManager<__dios::BaseContext> > > > > > >(_VM_Fault, _VM_Frame*, void (*)())
[ 0:43]     location: /dios/include/dios/sys/fault.hpp:193
[ 0:43]   - symbol: free
[ 0:43]     location: /dios/src/libc/_PDCLIB/glue.c:74
[ 0:43]   - symbol: main
[ 0:43]     location: /home/xrockai/src/divine/nightly/test/svcomp/memsafety/test-0232_false-valid-free.c:53
[ 0:43]   - symbol: _start
[ 0:43]     location: /dios/src/libc/sys/start.cpp:82
[ 0:43] a report was written to verify.out
[ 0:43] 
[ 1:18]            ^       —————.   —.—  .     .  —.—  .     .  .—————    .    .
[ 1:18]           ———      |     |   |   |     |   |   |\    |  |         |    |
[ 1:18]          —(o)—     |     |   |   |     |   |   |  \  |  |————     '————|
[ 1:18]         ———————    |     |   |    \   /    |   |    \|  |              |
[ 1:18]        —————————   —————'   —'—     '     —'—  '     '  '—————         '
[ 1:18] 
[ 1:18] Welcome to 'divine sim', an interactive debugger. Type 'help' to get started.
[ 1:18] traced states: #1
[ 1:19] # active threads: [0:0]
[ 1:19] T: FAULT: invalid pointer passed to __vm_obj_free
[ 1:19] T: [0] FATAL: memory error in userspace
[ 1:19] # executing void {Fault}::handler<{Context} >(_VM_Fault, _VM_Frame*, void (*)()) at /dios/include/dios/sys/fault.hpp:193
[ 1:19] # NOTE: $frame in free
[ 1:19] > backtrace
[ 1:19]   void {Fault}::handler<{Context} >(_VM_Fault, _VM_Frame*, void (*)()) at /dios/include/dios/sys/fault.hpp:193
[ 1:19]   free at /dios/src/libc/_PDCLIB/glue.c:74
[ 1:19]   main at /home/xrockai/src/divine/nightly/test/svcomp/memsafety/test-0232_false-valid-free.c:53
[ 1:19]   _start at /dios/src/libc/sys/start.cpp:82
[ 1:19] # executing void {Fault}::handler<{Context} >(_VM_Fault, _VM_Frame*, void (*)()) at /dios/include/dios/sys/fault.hpp:193
[ 1:19] # NOTE: $frame in free