Trace number 198572

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 ESACUNSAT 0.841871 0.88096

DiagnosticValue
CHECKS40940
NODES2996

General information on the benchmark

Namepigeons/
pigeons-8.xml
MD5SUMb39aceb1c33f52b47385119bd97bf2b4
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 benchmark0.026995
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables8
Number of constraints28
Maximum constraint arity2
Maximum domain size7
Number of constraints which are defined in extension0
Number of constraints which are defined in intension28
Global constraints used (with number of constraints)

Solver Data (download as text)

0.31	   
0.31	Abscon 109 (November, 2006)
0.31	   
0.31	   configuration
0.31	     name=esac.xml
0.34	   
0.34	   instance
0.34	     name=/tmp/evaluation/198572-1168129818/unknown.xml
0.37	   
0.37	   domains being loaded...
0.37	   
0.37	   variables being loaded...
0.40	     nbVariables=8  nbDomainTypes=1  minDomainSize=7  maxDomainSize=7
0.40	       =>  wckTime=0.091  cpuTime=0.09  mem=6M951
0.40	   
0.40	   predicates being loaded...
0.40	   
0.40	   constraints being loaded...
0.45	     nbConstraints=28  nbConvertedConstraints=28  nbConvertConstraintsChecks=49  nbExtensionStructures=1
0.45	     nbSharedExtensionStructures=27  nbConflictsStructures=1  nbSharedConflictsStructures=27
0.45	     nbSharedBinaryRepresentations=7  maxDegree=7  maxArity=2
0.45	       =>  wckTime=0.142  cpuTime=0.13  mem=7M927
0.48	   
0.48	   solver IterativeSystematicSolver being built... 
0.64	       =>  wckTime=0.33  cpuTime=0.25  mem=13M265
0.65	   
0.65	   preprocessing
0.65	     nbConstraintChecks=280  nbPropagations=72  nbRevisions=56  nbUselessRevisions=0  nbSingletonTests=12
0.65	     nbEffectiveSingletonTests=0  nbESACBranches=2  nbRemovedValues=0  detectedInconsistency=no
0.65	       =>  wckTime=0.0050  cpuTime=0.01  mem=13M265
0.66	   
0.66	   search
0.67	     run=0  nbConstraintChecks=419  nbPropagations=194  nbRevisions=215  nbUselessRevisions=24  nbAssignments=23
0.67	     nbFailedAssignments=10  nbBacktracks=10  nbVisitedNodes=44  nbRestartNogoods=0  mapSize=10  nbInferences=0
0.67	     nbTooLargeKeys=0
0.67	       =>  wckTime=0.024  cpuTime=0.02  mem=14M306
0.67	   
0.67	   search
0.67	     run=1  nbConstraintChecks=973  nbPropagations=556  nbRevisions=644  nbUselessRevisions=78  nbAssignments=56
0.67	     nbFailedAssignments=24  nbBacktracks=25  nbVisitedNodes=105  nbRestartNogoods=4  mapSize=25  nbInferences=0
0.67	     nbTooLargeKeys=0
0.67	       =>  wckTime=0.032  cpuTime=0.02  mem=14M306
0.68	   
0.68	   search
0.68	     run=2  nbConstraintChecks=1546  nbPropagations=1123  nbRevisions=1284  nbUselessRevisions=139  nbAssignments=100
0.68	     nbFailedAssignments=41  nbBacktracks=48  nbVisitedNodes=184  nbRestartNogoods=7  mapSize=48  nbInferences=1
0.68	     nbTooLargeKeys=0
0.68	       =>  wckTime=0.041  cpuTime=0.03  mem=14M306
0.69	   
0.69	   search
0.69	     run=3  nbConstraintChecks=2254  nbPropagations=1958  nbRevisions=2189  nbUselessRevisions=201  nbAssignments=159
0.69	     nbFailedAssignments=64  nbBacktracks=81  nbVisitedNodes=290  nbRestartNogoods=10  mapSize=81  nbInferences=2
0.69	     nbTooLargeKeys=0
0.69	       =>  wckTime=0.051  cpuTime=0.04  mem=14M306
0.71	   
0.71	   search
0.71	     run=4  nbConstraintChecks=3484  nbPropagations=3269  nbRevisions=3528  nbUselessRevisions=263  nbAssignments=262
0.71	     nbFailedAssignments=94  nbBacktracks=131  nbVisitedNodes=473  nbRestartNogoods=12  mapSize=131  nbInferences=22
0.71	     nbTooLargeKeys=0
0.71	       =>  wckTime=0.067  cpuTime=0.05  mem=14M306
0.73	   
0.73	   search
0.73	     run=5  nbConstraintChecks=5314  nbPropagations=5264  nbRevisions=5514  nbUselessRevisions=326  nbAssignments=409
0.73	     nbFailedAssignments=143  nbBacktracks=206  nbVisitedNodes=729  nbRestartNogoods=18  mapSize=206  nbInferences=37
0.73	     nbTooLargeKeys=0
0.73	       =>  wckTime=0.085  cpuTime=0.06  mem=14M306
0.75	   
0.75	   search
0.75	     run=6  nbConstraintChecks=8277  nbPropagations=8362  nbRevisions=8496  nbUselessRevisions=392  nbAssignments=645
0.75	     nbFailedAssignments=205  nbBacktracks=319  nbVisitedNodes=1130  nbRestartNogoods=23  mapSize=319  nbInferences=86
0.75	     nbTooLargeKeys=0
0.75	       =>  wckTime=0.106  cpuTime=0.07  mem=14M306
0.77	   
0.77	   search
0.77	     run=7  nbConstraintChecks=13559  nbPropagations=13430  nbRevisions=13135  nbUselessRevisions=461
0.77	     nbAssignments=1056  nbFailedAssignments=282  nbBacktracks=491  nbVisitedNodes=1844  nbRestartNogoods=29
0.77	     mapSize=491  nbInferences=241  nbTooLargeKeys=0
0.77	       =>  wckTime=0.127  cpuTime=0.08  mem=14M306
0.80	   
0.80	   search
0.80	     run=8  nbConstraintChecks=21722  nbPropagations=21489  nbRevisions=20373  nbUselessRevisions=582
0.80	     nbAssignments=1677  nbFailedAssignments=402  nbBacktracks=748  nbVisitedNodes=2936  nbRestartNogoods=30
0.80	     mapSize=748  nbInferences=482  nbTooLargeKeys=0
0.80	       =>  wckTime=0.163  cpuTime=0.1  mem=14M306
0.83	   
0.83	   search
0.83	     run=9  nbConstraintChecks=33538  nbPropagations=33822  nbRevisions=31388  nbUselessRevisions=798
0.83	     nbAssignments=2573  nbFailedAssignments=580  nbBacktracks=1132  nbVisitedNodes=4494  nbRestartNogoods=36
0.83	     mapSize=1131  nbInferences=814  nbTooLargeKeys=0
0.83	       =>  wckTime=0.19  cpuTime=0.12  mem=14M306
0.84	   
0.84	   search
0.84	     run=10  nbConstraintChecks=40660  nbPropagations=48388  nbRevisions=44227  nbUselessRevisions=1041
0.84	     nbAssignments=2996  nbFailedAssignments=613  nbBacktracks=1280  nbVisitedNodes=5216  nbRestartNogoods=44
0.84	     mapSize=1277  nbInferences=1057  nbTooLargeKeys=0
0.84	       =>  wckTime=0.199  cpuTime=0.13  mem=14M306
0.84	   
0.84	   global
0.84	     nbConstraintChecks=40940  nbPropagations=48460  nbRevisions=44283  nbUselessRevisions=1041  nbRestartNogoods=44
0.84	     solvingWckTime=0.2  solvingCpuTime=0.13  expiredTime=no  totalExploration=yes  nbFoundSolutions=0
0.84	     globalCpuTime=0.43
0.84	       =>  wckTime=0.532  cpuTime=0.38  mem=14M306
0.84	   
0.84	s UNSATISFIABLE
0.84	d NODES 2996
0.84	d CHECKS 40940
0.84	   
0.84	   totalWckTime=0.612  totalCpuTime=0.43

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/node62/watcher-198572-1168129818 -o ROOT/results/node62/solver-198572-1168129818 -C 1800 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/198572-1168129818/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: 0.72 0.93 0.98 4/68 17886
/proc/meminfo: memFree=1806304/2055920 swapFree=4192812/4192956
[pid=17885] ppid=17881 vsize=172 CPUtime=0
/proc/17885/stat : 17885 (java) R 17881 17885 17742 0 -1 0 217 0 0 0 0 0 0 0 18 0 1 0 161379699 176128 24 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 8106283 0 0 4096 0 0 0 0 17 0 0 0
/proc/17885/statm: 43 24 18 14 0 3 0

[startup+0.105445 s]
/proc/loadavg: 0.72 0.93 0.98 4/68 17886
/proc/meminfo: memFree=1806304/2055920 swapFree=4192812/4192956
[pid=17885] ppid=17881 vsize=914988 CPUtime=0.09
/proc/17885/stat : 17885 (java) R 17881 17885 17742 0 -1 0 3019 0 1 0 8 1 0 0 17 0 8 0 161379699 936947712 2765 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/17885/statm: 228747 2765 1435 14 0 215242 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 914988

[startup+0.513526 s]
/proc/loadavg: 0.72 0.93 0.98 4/68 17886
/proc/meminfo: memFree=1806304/2055920 swapFree=4192812/4192956
[pid=17885] ppid=17881 vsize=915460 CPUtime=0.49
/proc/17885/stat : 17885 (java) R 17881 17885 17742 0 -1 0 6714 0 1 0 46 3 0 0 19 0 8 0 161379699 937431040 6452 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4152156684 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/17885/statm: 228865 6452 2397 14 0 215335 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 915460

Child status: 0
Real time (s): 0.88096
CPU time (s): 0.841871
CPU user time (s): 0.78288
CPU system time (s): 0.058991
CPU usage (%): 95.5629
Max. virtual memory (cumulated for all children) (KiB): 915460

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.78288
system time used= 0.058991
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 8508
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= 870
involuntary context switches= 1055

runsolver used 0.003999 s user time and 0.009998 s system time

The end

Launcher Data (download as text)

Begin job on node62 on Sun Jan  7 00:30:19 UTC 2007


IDJOB= 198572
IDBENCH= 3564
FILE ID= node62/198572-1168129818

PBS_JOBID= 3477956

Free space on /tmp= 66550 MiB

BENCH NAME= HOME/pub/bench/CPAI06/pigeons/pigeons-8.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/198572-1168129818/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node62/watcher-198572-1168129818 -o ROOT/results/node62/solver-198572-1168129818 -C 1800 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/198572-1168129818/unknown.xml

META MD5SUM SOLVER= 9b91398c18c9fe54a6c4cfb50dadce08
MD5SUM BENCH=  b39aceb1c33f52b47385119bd97bf2b4

RANDOM SEED= 302661608

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		: 3000.259
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		: 3000.259
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:       1806904 kB
Buffers:         21856 kB
Cached:         158684 kB
SwapCached:          0 kB
Active:          93020 kB
Inactive:       107516 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1806904 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2252 kB
Writeback:           0 kB
Mapped:          30184 kB
Slab:            34200 kB
Committed_AS:  3096048 kB
PageTables:       1684 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 node62 on Sun Jan  7 00:30:20 UTC 2007