Trace number 2097628

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. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock 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 112v4 ESACUNSAT 0.735887 0.793574

DiagnosticValue
CHECKS3275
NODES36

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-5.xml
MD5SUM42a251b4e5e78e8baab98daca83f50dd
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 benchmark0.006998
Satisfiable
(Un)Satisfiability was proved
Number of variables10
Number of constraints50
Maximum constraint arity2
Maximum domain size10
Number of constraints which are defined in extension0
Number of constraints which are defined in intension50
Global constraints used (with number of constraints)

Solver Data 

0.00/0.09	
0.00/0.09	Abscon 112 (May, 2008)
0.19/0.24	
0.19/0.24	   configuration
0.19/0.24	     name=esac.xml
0.19/0.28	   
0.19/0.28	   instance
0.19/0.28	     name=HOME/instance-2097628-1247413731.xml
0.28/0.31	   
0.28/0.31	   domains being loaded...
0.28/0.32	   
0.28/0.32	   variables being loaded...
0.28/0.34	     nbVariables=10  nbDomainTypes=1  minDomainSize=10  maxDomainSize=10  nbTotalValues=100
0.28/0.34	       =>  wckTime=0.1  cpuTime=0.09  mem=7M892
0.28/0.34	   
0.28/0.34	   predicates being loaded...
0.38/0.40	   
0.38/0.40	   constraints being loaded...
0.47/0.50	     nbConstraints=46  nbGlobalConstraints=1  nbMergedConstraints=5  nbConvertedConstraints=45
0.47/0.50	     nbConvertConstraintsChecks=600  nbExtensionStructures=6  nbSharedExtensionStructures=39  nbConflictsStructures=6
0.47/0.50	     nbSharedConflictsStructures=39  nbSharedBinaryRepresentations=99  minDegree=10  maxDegree=10  minArity=2
0.47/0.50	     avgArity=2.17  maxArity=10  nbGenerators=0  nbFusions=0  symmetryWckTime=0.033  symmetryCpuTime=0.02  nbCliques=1
0.47/0.50	       =>  wckTime=0.252  cpuTime=0.21  mem=13M796
0.47/0.55	   
0.47/0.55	   solver IterativeSystematicSolver being built... 
0.57/0.62	   
0.57/0.62	   INFO : Forward propagation technique limited 
0.57/0.68	       =>  wckTime=0.441  cpuTime=0.32  mem=19M426
0.67/0.71	   
0.67/0.71	   preprocessing
0.67/0.71	     nbConstraintChecks=864  nbPropagations=92  nbRevisions=213  nbUselessRevisions=136  nbSingletonTests=15
0.67/0.71	     nbEffectiveSingletonTests=0  nbACRemovals=40  nbFoundSingletons=0  nbRemovedValues=40  detectedInconsistency=no
0.67/0.71	       =>  wckTime=0.019  cpuTime=0.02  mem=20M401
0.67/0.74	   
0.67/0.74	   search
0.67/0.74	     run=1  nbConstraintChecks=2411  minDepth=1  maxDepth=4  nbPropagations=617  nbRevisions=1790
0.67/0.74	     nbUselessRevisions=1191  nbAssignments=36  nbFailedAssignments=13  nbBacktracks=21  nbVisitedNodes=58
0.67/0.74	     nbRestartNogoods=1  mapSize=12  nbInferences=0  nbTooLargeKeys=0  nbSEliminables=0  nbREliminables=0
0.67/0.74	     nbIEliminables=8.7  nbDEliminables=0  nbPEliminables=0
0.67/0.74	       =>  wckTime=0.05  cpuTime=0.04  mem=21M376
0.67/0.74	   
0.67/0.74	   global
0.67/0.74	     nbConstraintChecks=3275  nbPropagations=709  nbRevisions=2003  nbUselessRevisions=1327  nbRestartNogoods=1
0.67/0.74	     solvingWckTime=0.052  solvingCpuTime=0.04  expiredTime=no  totalExploration=yes  nbFoundSolutions=0
0.67/0.74	     globalCpuTime=0.39
0.67/0.74	       =>  wckTime=0.495  cpuTime=0.36  mem=21M376
0.67/0.74	   
0.67/0.74	s UNSATISFIABLE
0.67/0.74	d NODES 36
0.67/0.74	d CHECKS 3275
0.67/0.74	   
0.67/0.74	   totalWckTime=0.561  totalCpuTime=0.39

Verifier Data 

No possible verification on an UNSAT instance

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2097628-1247413731/watcher-2097628-1247413731 -o /tmp/evaluation-result-2097628-1247413731/solver-2097628-1247413731 -C 1800 -W 2000 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax HOME/instance-2097628-1247413731.xml 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2000 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


[startup+0 s]
/proc/loadavg: 2.07 2.03 2.00 4/80 1342
/proc/meminfo: memFree=1632816/2055920 swapFree=4192812/4192956
[pid=1342] ppid=1340 vsize=1616 CPUtime=0
/proc/1342/stat : 1342 (java) D 1340 1342 31276 0 -1 0 180 0 0 0 0 0 0 0 18 0 1 0 28440036 1654784 148 996147200 134512640 134550932 4294956128 18446744073709551615 4294960144 0 2147483391 4096 0 18446744072099781622 0 0 17 0 0 0
/proc/1342/statm: 404 148 122 9 0 46 0

[startup+0.0990751 s]
/proc/loadavg: 2.07 2.03 2.00 4/80 1342
/proc/meminfo: memFree=1632816/2055920 swapFree=4192812/4192956
[pid=1342] ppid=1340 vsize=865980 CPUtime=0.08
/proc/1342/stat : 1342 (java) S 1340 1342 31276 0 -1 0 3734 0 1 0 6 2 0 0 18 0 9 0 28440036 886763520 3202 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/1342/statm: 216495 3202 1700 9 0 210980 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 865980

[startup+0.102068 s]
/proc/loadavg: 2.07 2.03 2.00 4/80 1342
/proc/meminfo: memFree=1632816/2055920 swapFree=4192812/4192956
[pid=1342] ppid=1340 vsize=865980 CPUtime=0.09
/proc/1342/stat : 1342 (java) S 1340 1342 31276 0 -1 0 3741 0 1 0 7 2 0 0 18 0 9 0 28440036 886763520 3209 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/1342/statm: 216495 3209 1700 9 0 210980 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 865980

[startup+0.301115 s]
/proc/loadavg: 2.07 2.03 2.00 4/80 1342
/proc/meminfo: memFree=1632816/2055920 swapFree=4192812/4192956
[pid=1342] ppid=1340 vsize=866380 CPUtime=0.28
/proc/1342/stat : 1342 (java) S 1340 1342 31276 0 -1 0 5989 0 1 0 25 3 0 0 18 0 9 0 28440036 887173120 5355 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/1342/statm: 216595 5357 1985 9 0 211053 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 866380

[startup+0.701178 s]
/proc/loadavg: 2.07 2.03 2.00 4/80 1342
/proc/meminfo: memFree=1632816/2055920 swapFree=4192812/4192956
[pid=1342] ppid=1340 vsize=867060 CPUtime=0.67
/proc/1342/stat : 1342 (java) S 1340 1342 31276 0 -1 0 15050 264 1 0 59 8 0 0 18 0 9 0 28440036 887869440 9988 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/1342/statm: 216765 9988 2653 9 0 211201 0
Current children cumulated CPU time (s) 0.67
Current children cumulated vsize (KiB) 867060

Solver just ended. Dumping a history of the last processes samples

Child status: 0
Real time (s): 0.793574
CPU time (s): 0.735887
CPU user time (s): 0.640902
CPU system time (s): 0.094985
CPU usage (%): 92.7308
Max. virtual memory (cumulated for all children) (KiB): 867060

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.640902
system time used= 0.094985
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 15696
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= 715
involuntary context switches= 715

runsolver used 0.003999 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node14 at 2009-07-12 17:48:51
IDJOB=2097628
IDBENCH=57579
IDSOLVER=774
FILE ID=node14/2097628-1247413731
PBS_JOBID= 9510616
Free space on /tmp= 66516 MiB

SOLVER NAME= Abscon 112v4 ESAC
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-5.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2097628-1247413731/watcher-2097628-1247413731 -o /tmp/evaluation-result-2097628-1247413731/solver-2097628-1247413731 -C 1800 -W 2000 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution esac.xml 1 XSax HOME/instance-2097628-1247413731.xml

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB
MAX NB THREAD= 0

MD5SUM BENCH= 42a251b4e5e78e8baab98daca83f50dd
RANDOM SEED=763620248

node14.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/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		: 3000.265
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		: 3000.265
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:       1633296 kB
Buffers:         54800 kB
Cached:         140700 kB
SwapCached:          0 kB
Active:         268452 kB
Inactive:        94692 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1633296 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2012 kB
Writeback:           0 kB
Mapped:         188156 kB
Slab:            44380 kB
Committed_AS:  1014364 kB
PageTables:       2156 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= 66516 MiB
End job on node14 at 2009-07-12 17:48:52