Trace number 2098462

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 0.946855 1.0116

DiagnosticValue
CHECKS28437
NODES0

General information on the benchmark

Namecsp/langford4/
normalized-langford-4-6.xml
MD5SUM9c67e5ee3d162a7a5b0bc1b6ab9cde07
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 benchmark0.014997
Satisfiable
(Un)Satisfiability was proved
Number of variables24
Number of constraints294
Maximum constraint arity2
Maximum domain size24
Number of constraints which are defined in extension0
Number of constraints which are defined in intension294
Global constraints used (with number of constraints)

Solver Data 

0.03/0.09	
0.03/0.09	Abscon 112 (May, 2008)
0.18/0.26	
0.18/0.26	   configuration
0.18/0.26	     name=esac.xml
0.27/0.30	   
0.27/0.30	   instance
0.27/0.30	     name=HOME/instance-2098462-1247415649.xml
0.27/0.34	   
0.27/0.34	   domains being loaded...
0.27/0.35	   
0.27/0.35	   variables being loaded...
0.27/0.37	     nbVariables=24  nbDomainTypes=1  minDomainSize=24  maxDomainSize=24  nbTotalValues=576
0.27/0.37	       =>  wckTime=0.108  cpuTime=0.1  mem=7M892
0.27/0.38	   
0.27/0.38	   predicates being loaded...
0.38/0.44	   
0.38/0.44	   constraints being loaded...
0.67/0.70	     nbConstraints=277  nbGlobalConstraints=1  nbMergedConstraints=18  nbConvertedConstraints=276
0.67/0.70	     nbConvertConstraintsChecks=4032  nbExtensionStructures=7  nbSharedExtensionStructures=269  nbConflictsStructures=7
0.67/0.70	     nbSharedConflictsStructures=269  nbSharedBinaryRepresentations=287  minDegree=24  maxDegree=24  minArity=2
0.67/0.70	     avgArity=2.08  maxArity=24  nbGenerators=0  nbFusions=0  symmetryWckTime=0.067  symmetryCpuTime=0.03  nbCliques=1
0.67/0.70	       =>  wckTime=0.435  cpuTime=0.32  mem=15M817
0.67/0.75	   
0.67/0.75	   solver IterativeSystematicSolver being built... 
0.77/0.82	   
0.77/0.82	   INFO : Forward propagation technique limited 
0.77/0.89	       =>  wckTime=0.621  cpuTime=0.43  mem=19M629
0.86/0.95	   
0.86/0.95	   preprocessing
0.86/0.95	     nbConstraintChecks=28437  nbPropagations=512  nbRevisions=3991  nbUselessRevisions=3033  nbSingletonTests=35
0.86/0.95	     nbEffectiveSingletonTests=10  nbACRemovals=324  nbFoundSingletons=0  nbRemovedValues=428  detectedInconsistency=yes
0.86/0.95	       =>  wckTime=0.058  cpuTime=0.04  mem=20M669
0.86/0.95	   
0.86/0.95	   global
0.86/0.95	     nbConstraintChecks=28437  nbPropagations=512  nbRevisions=3991  nbUselessRevisions=3033  nbRestartNogoods=0
0.86/0.95	     solvingWckTime=0.063  solvingCpuTime=0.04  expiredTime=no  totalExploration=yes  nbFoundSolutions=0
0.86/0.95	     globalCpuTime=0.51
0.86/0.95	       =>  wckTime=0.685  cpuTime=0.47  mem=20M669
0.86/0.95	   
0.86/0.95	s UNSATISFIABLE
0.86/0.95	d NODES 0
0.86/0.95	d CHECKS 28437
0.86/0.95	   
0.86/0.95	   totalWckTime=0.755  totalCpuTime=0.51

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-2098462-1247415649/watcher-2098462-1247415649 -o /tmp/evaluation-result-2098462-1247415649/solver-2098462-1247415649 -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-2098462-1247415649.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: 1.85 1.97 1.99 4/81 31440
/proc/meminfo: memFree=1730248/2055920 swapFree=4192812/4192956
[pid=31440] ppid=31438 vsize=18576 CPUtime=0
/proc/31440/stat : 31440 (runsolver) R 31438 31440 31364 0 -1 4194368 16 0 0 0 0 0 0 0 18 0 1 0 28628205 19021824 284 996147200 4194304 4302564 548682068384 18446744073709551615 250968861991 0 2147483391 4096 24578 0 0 0 17 1 0 0
/proc/31440/statm: 4644 284 249 26 0 2626 0

[startup+0.044007 s]
/proc/loadavg: 1.85 1.97 1.99 4/81 31440
/proc/meminfo: memFree=1730248/2055920 swapFree=4192812/4192956
[pid=31440] ppid=31438 vsize=861936 CPUtime=0.03
/proc/31440/stat : 31440 (java) S 31438 31440 31364 0 -1 0 2278 0 1 0 2 1 0 0 18 0 5 0 28628205 882622464 1880 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800971 18446744073709551615 0 0 17 1 0 0
/proc/31440/statm: 215484 1894 867 9 0 210399 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 861936

[startup+0.109551 s]
/proc/loadavg: 1.85 1.97 1.99 4/81 31440
/proc/meminfo: memFree=1730248/2055920 swapFree=4192812/4192956
[pid=31440] ppid=31438 vsize=865984 CPUtime=0.09
/proc/31440/stat : 31440 (java) S 31438 31440 31364 0 -1 0 3854 0 1 0 7 2 0 0 18 0 9 0 28628205 886767616 3297 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0
/proc/31440/statm: 216496 3297 1735 9 0 210981 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 865984

[startup+0.30157 s]
/proc/loadavg: 1.85 1.97 1.99 4/81 31440
/proc/meminfo: memFree=1730248/2055920 swapFree=4192812/4192956
[pid=31440] ppid=31438 vsize=866380 CPUtime=0.27
/proc/31440/stat : 31440 (java) S 31438 31440 31364 0 -1 0 5792 0 1 0 24 3 0 0 18 0 9 0 28628205 887173120 5173 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0
/proc/31440/statm: 216595 5173 1966 9 0 211053 0
Current children cumulated CPU time (s) 0.27
Current children cumulated vsize (KiB) 866380

[startup+0.702206 s]
/proc/loadavg: 1.85 1.97 1.99 4/81 31440
/proc/meminfo: memFree=1730248/2055920 swapFree=4192812/4192956
[pid=31440] ppid=31438 vsize=867792 CPUtime=0.67
/proc/31440/stat : 31440 (java) S 31438 31440 31364 0 -1 0 9237 286 1 0 60 7 0 0 18 0 9 0 28628205 888619008 7705 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0
/proc/31440/statm: 216948 7705 2049 9 0 211384 0
Current children cumulated CPU time (s) 0.67
Current children cumulated vsize (KiB) 867792

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

[startup+0.902663 s]
/proc/loadavg: 1.85 1.97 1.99 4/81 31440
/proc/meminfo: memFree=1730248/2055920 swapFree=4192812/4192956
[pid=31440] ppid=31438 vsize=867932 CPUtime=0.86
/proc/31440/stat : 31440 (java) S 31438 31440 31364 0 -1 0 15671 286 1 0 77 9 0 0 18 0 9 0 28628205 888762368 10244 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0
/proc/31440/statm: 216983 10244 2656 9 0 211419 0
Current children cumulated CPU time (s) 0.86
Current children cumulated vsize (KiB) 867932

[startup+1.00229 s]
/proc/loadavg: 1.85 1.97 1.99 3/83 31453
/proc/meminfo: memFree=1710192/2055920 swapFree=4192812/4192956
[pid=31440] ppid=31438 vsize=0 CPUtime=0.92
/proc/31440/stat : 31440 (java) Z 31438 31440 31364 0 -1 12 15898 286 1 0 83 9 0 0 16 0 2 0 28628205 0 0 996147200 0 0 0 0 0 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0
/proc/31440/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 0.92
Current children cumulated vsize (KiB) 0

Child status: 0
Real time (s): 1.0116
CPU time (s): 0.946855
CPU user time (s): 0.835872
CPU system time (s): 0.110983
CPU usage (%): 93.5996
Max. virtual memory (cumulated for all children) (KiB): 867932

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.835872
system time used= 0.110983
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 16184
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= 987
involuntary context switches= 1056

runsolver used 0.006998 second user time and 0.011998 second system time

The end

Launcher Data 

Begin job on node56 at 2009-07-12 18:20:49
IDJOB=2098462
IDBENCH=58666
IDSOLVER=774
FILE ID=node56/2098462-1247415649
PBS_JOBID= 9510662
Free space on /tmp= 103048 MiB

SOLVER NAME= Abscon 112v4 ESAC
BENCH NAME= CPAI08/csp/langford4/normalized-langford-4-6.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-2098462-1247415649/watcher-2098462-1247415649 -o /tmp/evaluation-result-2098462-1247415649/solver-2098462-1247415649 -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-2098462-1247415649.xml

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

MD5SUM BENCH= 9c67e5ee3d162a7a5b0bc1b6ab9cde07
RANDOM SEED=663910656

node56.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		: 3000.209
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		: 3000.209
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:       1730728 kB
Buffers:         40464 kB
Cached:         129740 kB
SwapCached:          0 kB
Active:         189484 kB
Inactive:        78832 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1730728 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2220 kB
Writeback:           0 kB
Mapped:         117600 kB
Slab:            41928 kB
Committed_AS:  1003664 kB
PageTables:       2040 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= 103048 MiB
End job on node56 at 2009-07-12 18:20:50