Trace number 252458

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds, and are wall clock time (not CPU time).

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
Mistral 2006-12-04? (problem) 0.224965 0.231652

General information on the benchmark

Namebmc/
bmc-ibm-07-08.xml
MD5SUM7e645d0d3f1cc6d54daea6a43df0fa5a
Bench CategoryN-ARY-INT (n-ary constraints in intension)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark2.6346
SatisfiableNO
(Un)Satisfiability was proved
Number of variables8710
Number of constraints48484
Maximum constraint arity33
Maximum domain size8
Number of constraints which are defined in extension0
Number of constraints which are defined in intension48484
Global constraints used (with number of constraints)

Solver Data (download as text)

0.20	c 
0.20	c Parsing xml file
0.20	c 	domains...............    0
0.20	c 	variables............. 0.19
0.20	c 	predicates............ 0.03
0.22	c 	constraints.this top level constraint is not implemented

Verifier Data (download as text)

ERROR: Unexpected answer ! (SAT/UNSAT expected)
Got answer:

Watcher Data (download as text)

runsolver version 3.1.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node16/watcher-252458-1168407603 -o ROOT/results/node16/solver-252458-1168407603 -C 1800 -M 900 /tmp/evaluation/252458-1168407603/mistral/bin/solver /tmp/evaluation/252458-1168407603/unknown.xml -v 1 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 921600 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 972800 KiB
Current StackSize limit: 10240 KiB

/proc/loadavg: 2.00 2.00 2.00 3/94 12153
/proc/meminfo: memFree=1611360/2055920 swapFree=4191880/4192956
[pid=12152] ppid=12150 vsize=540 CPUtime=0
/proc/12152/stat : 12152 (solver) R 12150 12152 11335 0 -1 4194304 38 0 0 0 0 0 0 0 20 0 1 0 189155230 552960 23 18446744073709551615 134512640 134893201 4294956688 18446744073709551615 7208695 0 0 4096 0 0 0 0 17 1 0 0
/proc/12152/statm: 135 23 18 92 0 18 0

[startup+0.102769 s]
/proc/loadavg: 2.00 2.00 2.00 3/94 12153
/proc/meminfo: memFree=1611360/2055920 swapFree=4191880/4192956
[pid=12152] ppid=12150 vsize=8500 CPUtime=0.09
/proc/12152/stat : 12152 (solver) R 12150 12152 11335 0 -1 4194304 1193 0 0 0 9 0 0 0 18 0 1 0 189155230 8704000 1161 18446744073709551615 134512640 134893201 4294956688 18446744073709551615 7638717 0 0 4096 0 0 0 0 17 1 0 0
/proc/12152/statm: 2125 1161 692 92 0 469 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 8500

Child status: 0
Real time (s): 0.231652
CPU time (s): 0.224965
CPU user time (s): 0.212967
CPU system time (s): 0.011998
CPU usage (%): 97.1134
Max. virtual memory (cumulated for all children) (KiB): 10248

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.212967
system time used= 0.011998
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1664
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 13
involuntary context switches= 26

runsolver used 0.002999 s user time and 0.007998 s system time

The end

Launcher Data (download as text)

Begin job on node16 on Wed Jan 10 05:40:03 UTC 2007


IDJOB= 252458
IDBENCH= 12938
FILE ID= node16/252458-1168407603

PBS_JOBID= 3523159

Free space on /tmp= 66511 MiB

BENCH NAME= HOME/pub/bench/CPAI06/bmc/bmc-ibm-07-08.xml
COMMAND LINE= /tmp/evaluation/252458-1168407603/mistral/bin/solver /tmp/evaluation/252458-1168407603/unknown.xml -v 1
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node16/watcher-252458-1168407603 -o ROOT/results/node16/solver-252458-1168407603 -C 1800 -M 900  /tmp/evaluation/252458-1168407603/mistral/bin/solver /tmp/evaluation/252458-1168407603/unknown.xml -v 1

META MD5SUM SOLVER= cb80ed4ac975bdc0101f830a5b1b8f77
MD5SUM BENCH=  7e645d0d3f1cc6d54daea6a43df0fa5a

RANDOM SEED= 116752282

TIME LIMIT= 1800 seconds

MEMORY LIMIT= 900 MiB


/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.220
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.220
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1612224 kB
Buffers:         44584 kB
Cached:         252740 kB
SwapCached:        448 kB
Active:         269836 kB
Inactive:       118772 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1612224 kB
SwapTotal:     4192956 kB
SwapFree:      4191880 kB
Dirty:            9692 kB
Writeback:           0 kB
Mapped:         118480 kB
Slab:            39624 kB
Committed_AS:  6804236 kB
PageTables:       2556 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66511 MiB



End job on node16 on Wed Jan 10 05:40:04 UTC 2007