Trace number 200498

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
Abscon 109 ACUNSAT 0.97985 1.0529

DiagnosticValue
CHECKS2425436
NODES1058

General information on the benchmark

NamequeensKnights/
queensKnights-12-5-mul.xml
MD5SUM15028e4684706372f6e2dd90569f8262
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.840871
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables17
Number of constraints136
Maximum constraint arity2
Maximum domain size144
Number of constraints which are defined in extension0
Number of constraints which are defined in intension136
Global constraints used (with number of constraints)

Solver Data (download as text)

0.33	   
0.33	Abscon 109 (November, 2006)
0.33	   
0.33	   configuration
0.33	     name=mac.xml
0.36	   
0.36	   instance
0.36	     name=/tmp/evaluation/200498-1168072161/unknown.xml
0.39	   
0.39	   domains being loaded...
0.39	   
0.40	   variables being loaded...
0.43	     nbVariables=17  nbDomainTypes=2  minDomainSize=12  maxDomainSize=144
0.43	       =>  wckTime=0.097  cpuTime=0.08  mem=6M951
0.43	   
0.43	   predicates being loaded...
0.43	   
0.43	   constraints being loaded...
0.60	     nbConstraints=136  nbConvertedConstraints=136  nbConvertConstraintsChecks=63792  nbExtensionStructures=25
0.60	     nbSharedExtensionStructures=111  nbConflictsStructures=25  nbSharedConflictsStructures=111
0.60	     nbSharedBinaryRepresentations=2333  maxDegree=16  maxArity=2
0.60	       =>  wckTime=0.269  cpuTime=0.21  mem=8M902
0.63	   
0.63	   solver IterativeSystematicSolver being built... 
0.78	       =>  wckTime=0.448  cpuTime=0.33  mem=13M526
0.78	   
0.78	   preprocessing
0.78	     nbConstraintChecks=0  nbPropagations=17  nbRevisions=0  nbUselessRevisions=0  nbRemovedValues=0
0.78	     detectedInconsistency=no
0.78	       =>  wckTime=0.0010  cpuTime=0.0  mem=13M526
0.87	   
0.87	   search
0.87	     run=0  nbConstraintChecks=450128  nbPropagations=1429  nbRevisions=3423  nbUselessRevisions=1370  nbAssignments=213
0.87	     nbFailedAssignments=195  nbBacktracks=14  nbVisitedNodes=415  nbRestartNogoods=0  mapSize=8  nbInferences=0
0.87	     nbTooLargeKeys=0
0.87	       =>  wckTime=0.084  cpuTime=0.06  mem=13M526
0.91	   
0.91	   search
0.91	     run=1  nbConstraintChecks=1075382  nbPropagations=4729  nbRevisions=10585  nbUselessRevisions=3994
0.92	     nbAssignments=491  nbFailedAssignments=453  nbBacktracks=30  nbVisitedNodes=956  nbRestartNogoods=4  mapSize=15
0.92	     nbInferences=0  nbTooLargeKeys=0
0.92	       =>  wckTime=0.135  cpuTime=0.11  mem=13M526
0.99	   
0.99	   search
0.99	     run=2  nbConstraintChecks=2041914  nbPropagations=10874  nbRevisions=23927  nbUselessRevisions=8785
0.99	     nbAssignments=918  nbFailedAssignments=847  nbBacktracks=60  nbVisitedNodes=1788  nbRestartNogoods=5  mapSize=32
0.99	     nbInferences=0  nbTooLargeKeys=0
0.99	       =>  wckTime=0.205  cpuTime=0.17  mem=13M526
1.01	   
1.01	   search
1.01	     run=3  nbConstraintChecks=2425436  nbPropagations=18078  nbRevisions=40721  nbUselessRevisions=15681
1.01	     nbAssignments=1058  nbFailedAssignments=987  nbBacktracks=61  nbVisitedNodes=2068  nbRestartNogoods=6  mapSize=32
1.01	     nbInferences=0  nbTooLargeKeys=0
1.01	       =>  wckTime=0.232  cpuTime=0.2  mem=13M526
1.01	   
1.01	   global
1.01	     nbConstraintChecks=2425436  nbPropagations=18095  nbRevisions=40721  nbUselessRevisions=15681  nbRestartNogoods=6
1.01	     solvingWckTime=0.233  solvingCpuTime=0.2  expiredTime=no  totalExploration=yes  nbFoundSolutions=0
1.01	     globalCpuTime=0.58
1.01	       =>  wckTime=0.684  cpuTime=0.53  mem=13M526
1.01	   
1.01	s UNSATISFIABLE
1.02	d NODES 1058
1.02	d CHECKS 2425436
1.02	   
1.02	   totalWckTime=0.76  totalCpuTime=0.58

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node52/watcher-200498-1168072161 -o ROOT/results/node52/solver-200498-1168072161 -C 1800 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar mac.xml 1 XSax /tmp/evaluation/200498-1168072161/unknown.xml 

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 1.91 3/68 27639
/proc/meminfo: memFree=1492696/2055920 swapFree=4192812/4192956
[pid=27638] ppid=27636 vsize=1500 CPUtime=0
/proc/27638/stat : 27638 (java) R 27636 27638 27175 0 -1 0 87 0 0 0 0 0 0 0 20 0 1 0 155614695 1536000 69 18446744073709551615 134512640 134570532 4294956624 18446744073709551615 4280928 0 0 4096 0 0 0 0 17 1 0 0
/proc/27638/statm: 375 69 55 14 0 8 0

[startup+0.107241 s]
/proc/loadavg: 2.00 2.00 1.91 3/68 27639
/proc/meminfo: memFree=1492696/2055920 swapFree=4192812/4192956
[pid=27638] ppid=27636 vsize=911488 CPUtime=0.06
/proc/27638/stat : 27638 (java) R 27636 27638 27175 0 -1 0 2612 0 1 0 5 1 0 0 21 0 8 0 155614695 933363712 2359 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4155518291 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/27638/statm: 227872 2359 1278 14 0 215051 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 911488

[startup+0.515269 s]
/proc/loadavg: 2.00 2.00 1.91 3/68 27639
/proc/meminfo: memFree=1492696/2055920 swapFree=4192812/4192956
[pid=27638] ppid=27636 vsize=915460 CPUtime=0.46
/proc/27638/stat : 27638 (java) R 27636 27638 27175 0 -1 0 6555 0 1 0 43 3 0 0 17 0 8 0 155614695 937431040 6294 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4155586091 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/27638/statm: 228865 6294 2165 14 0 215335 0
Current children cumulated CPU time (s) 0.46
Current children cumulated vsize (KiB) 915460

Child status: 0
Real time (s): 1.0529
CPU time (s): 0.97985
CPU user time (s): 0.909861
CPU system time (s): 0.069989
CPU usage (%): 93.0616
Max. virtual memory (cumulated for all children) (KiB): 915460

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.909861
system time used= 0.069989
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 8424
page faults= 1
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 856
involuntary context switches= 760

runsolver used 0.002999 s user time and 0.005999 s system time

The end

Launcher Data (download as text)

Begin job on node52 on Sat Jan  6 08:29:22 UTC 2007


IDJOB= 200498
IDBENCH= 3711
FILE ID= node52/200498-1168072161

PBS_JOBID= 3475911

Free space on /tmp= 66552 MiB

BENCH NAME= HOME/pub/bench/CPAI06/queensKnights/queensKnights-12-5-mul.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar mac.xml 1 XSax /tmp/evaluation/200498-1168072161/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node52/watcher-200498-1168072161 -o ROOT/results/node52/solver-200498-1168072161 -C 1800 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar mac.xml 1 XSax /tmp/evaluation/200498-1168072161/unknown.xml

META MD5SUM SOLVER= 9b91398c18c9fe54a6c4cfb50dadce08
MD5SUM BENCH=  15028e4684706372f6e2dd90569f8262

RANDOM SEED= 516145345

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		: 3000.232
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		: 3000.232
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:       1493176 kB
Buffers:         35904 kB
Cached:         429012 kB
SwapCached:          0 kB
Active:          56872 kB
Inactive:       429384 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1493176 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1668 kB
Writeback:           0 kB
Mapped:          31496 kB
Slab:            62128 kB
Committed_AS:  3112020 kB
PageTables:       1704 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= 66550 MiB



End job on node52 on Sat Jan  6 08:29:23 UTC 2007