Trace number 2097275

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 ACUNSAT 0.787879 0.835804

DiagnosticValue
CHECKS24172
NODES52

General information on the benchmark

Namecsp/queensKnights/
normalized-queensKnights-8-5-add.xml
MD5SUM975c174ddd3fe86ae18e7a03c329b104
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 benchmark0.741886
Satisfiable
(Un)Satisfiability was proved
Number of variables13
Number of constraints38
Maximum constraint arity2
Maximum domain size64
Number of constraints which are defined in extension0
Number of constraints which are defined in intension38
Global constraints used (with number of constraints)

Solver Data 

0.00/0.08	
0.00/0.08	Abscon 112 (May, 2008)
0.19/0.24	
0.19/0.24	   configuration
0.19/0.24	     name=mac.xml
0.19/0.27	   
0.19/0.27	   instance
0.19/0.27	     name=HOME/instance-2097275-1247412018.xml
0.29/0.31	   
0.29/0.31	   domains being loaded...
0.29/0.32	   
0.29/0.32	   variables being loaded...
0.29/0.34	     nbVariables=13  nbDomainTypes=2  minDomainSize=8  maxDomainSize=64  nbTotalValues=384
0.29/0.34	       =>  wckTime=0.1  cpuTime=0.09  mem=7M892
0.29/0.34	   
0.29/0.34	   predicates being loaded...
0.39/0.40	   
0.39/0.40	   constraints being loaded...
0.49/0.54	     nbConstraints=43  nbGlobalConstraints=5  nbConvertedConstraints=38  nbConvertConstraintsChecks=16896
0.49/0.54	     nbExtensionStructures=12  nbSharedExtensionStructures=26  nbConflictsStructures=12  nbSharedConflictsStructures=26
0.49/0.54	     nbSharedBinaryRepresentations=201  minDegree=6  maxDegree=9  minArity=2  avgArity=2.47  maxArity=8  nbGenerators=3
0.49/0.54	     nbFusions=3  symmetryWckTime=0.047  symmetryCpuTime=0.02  nbCliques=2
0.49/0.54	       =>  wckTime=0.294  cpuTime=0.23  mem=14M778
0.49/0.59	   
0.49/0.59	   solver IterativeSystematicSolver being built... 
0.58/0.66	   
0.58/0.66	   INFO : Forward propagation technique limited 
0.67/0.72	       =>  wckTime=0.484  cpuTime=0.34  mem=19M458
0.67/0.73	   
0.67/0.73	   preprocessing
0.67/0.73	     nbConstraintChecks=580  nbPropagations=16  nbRevisions=11  nbUselessRevisions=4  nbRemovedValues=28
0.67/0.73	     nbRemovedTuples=2211  detectedInconsistency=no
0.67/0.73	       =>  wckTime=0.0030  cpuTime=0.01  mem=19M458
0.67/0.78	   
0.67/0.78	   search
0.67/0.78	     run=3  nbConstraintChecks=23592  minDepth=0  maxDepth=0  nbPropagations=978  nbRevisions=1975
0.67/0.78	     nbUselessRevisions=800  nbAssignments=52  nbFailedAssignments=52  nbBacktracks=1  nbVisitedNodes=105
0.67/0.78	     nbRestartNogoods=0  mapSize=0  nbInferences=0  nbTooLargeKeys=0  nbSEliminables=?  nbREliminables=?
0.67/0.78	     nbIEliminables=?  nbDEliminables=?  nbPEliminables=?
0.67/0.78	       =>  wckTime=0.053  cpuTime=0.04  mem=20M449
0.67/0.78	   
0.67/0.78	   global
0.67/0.78	     nbConstraintChecks=24172  nbPropagations=994  nbRevisions=1986  nbUselessRevisions=804  nbRestartNogoods=0
0.67/0.78	     solvingWckTime=0.055  solvingCpuTime=0.04  expiredTime=no  totalExploration=yes  nbFoundSolutions=0
0.67/0.78	     globalCpuTime=0.42
0.67/0.78	       =>  wckTime=0.542  cpuTime=0.38  mem=20M449
0.67/0.78	   
0.67/0.78	s UNSATISFIABLE
0.67/0.78	d NODES 52
0.67/0.78	d CHECKS 24172
0.67/0.79	   
0.67/0.79	   totalWckTime=0.608  totalCpuTime=0.43

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-2097275-1247412018/watcher-2097275-1247412018 -o /tmp/evaluation-result-2097275-1247412018/solver-2097275-1247412018 -C 1800 -W 2000 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution mac.xml 1 XSax HOME/instance-2097275-1247412018.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: 1.93 1.98 1.99 4/80 31552
/proc/meminfo: memFree=1747360/2055920 swapFree=4192812/4192956
[pid=31552] ppid=31550 vsize=272 CPUtime=0
/proc/31552/stat : 31552 (java) R 31550 31552 29832 0 -1 0 213 0 0 0 0 0 0 0 18 0 1 0 28268274 278528 35 996147200 134512640 134550932 4294955968 18446744073709551615 8440461 0 0 4096 0 0 0 0 17 0 0 0
/proc/31552/statm: 68 37 28 9 0 6 0

[startup+0.0171369 s]
/proc/loadavg: 1.93 1.98 1.99 4/80 31552
/proc/meminfo: memFree=1747360/2055920 swapFree=4192812/4192956
[pid=31552] ppid=31550 vsize=860640 CPUtime=0
/proc/31552/stat : 31552 (java) S 31550 31552 29832 0 -1 0 1396 0 1 0 0 0 0 0 18 0 2 0 28268274 881295360 1147 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16784584 18446744073709551615 0 0 17 0 0 0
/proc/31552/statm: 215160 1149 425 9 0 210075 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 860640

[startup+0.101142 s]
/proc/loadavg: 1.93 1.98 1.99 4/80 31552
/proc/meminfo: memFree=1747360/2055920 swapFree=4192812/4192956
[pid=31552] ppid=31550 vsize=865980 CPUtime=0.09
/proc/31552/stat : 31552 (java) S 31550 31552 29832 0 -1 0 3791 0 1 0 7 2 0 0 18 0 9 0 28268274 886763520 3245 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/31552/statm: 216495 3246 1713 9 0 210980 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 865980

[startup+0.301164 s]
/proc/loadavg: 1.93 1.98 1.99 4/80 31552
/proc/meminfo: memFree=1747360/2055920 swapFree=4192812/4192956
[pid=31552] ppid=31550 vsize=866380 CPUtime=0.29
/proc/31552/stat : 31552 (java) S 31550 31552 29832 0 -1 0 6083 0 1 0 25 4 0 0 18 0 9 0 28268274 887173120 5449 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/31552/statm: 216595 5449 1986 9 0 211053 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 866380

[startup+0.70121 s]
/proc/loadavg: 1.93 1.98 1.99 4/80 31552
/proc/meminfo: memFree=1747360/2055920 swapFree=4192812/4192956
[pid=31552] ppid=31550 vsize=867044 CPUtime=0.67
/proc/31552/stat : 31552 (java) S 31550 31552 29832 0 -1 0 13511 274 1 0 61 6 0 0 18 0 9 0 28268274 887853056 8392 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/31552/statm: 216761 8392 2651 9 0 211197 0
Current children cumulated CPU time (s) 0.67
Current children cumulated vsize (KiB) 867044

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

[startup+0.802214 s]
/proc/loadavg: 1.93 1.98 1.99 4/80 31552
/proc/meminfo: memFree=1747360/2055920 swapFree=4192812/4192956
[pid=31552] ppid=31550 vsize=867044 CPUtime=0.77
/proc/31552/stat : 31552 (java) S 31550 31552 29832 0 -1 0 15456 274 1 0 69 8 0 0 18 0 9 0 28268274 887853056 10330 996147200 134512640 134550932 4294955968 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/31552/statm: 216761 10330 2655 9 0 211197 0
Current children cumulated CPU time (s) 0.77
Current children cumulated vsize (KiB) 867044

Child status: 0
Real time (s): 0.835804
CPU time (s): 0.787879
CPU user time (s): 0.694894
CPU system time (s): 0.092985
CPU usage (%): 94.266
Max. virtual memory (cumulated for all children) (KiB): 867044

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.694894
system time used= 0.092985
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 15758
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= 740
involuntary context switches= 795

runsolver used 0.008998 second user time and 0.003999 second system time

The end

Launcher Data 

Begin job on node21 at 2009-07-12 17:20:18
IDJOB=2097275
IDBENCH=57088
IDSOLVER=773
FILE ID=node21/2097275-1247412018
PBS_JOBID= 9510602
Free space on /tmp= 66404 MiB

SOLVER NAME= Abscon 112v4 AC
BENCH NAME= CPAI08/csp/queensKnights/normalized-queensKnights-8-5-add.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution mac.xml 1 XSax BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2097275-1247412018/watcher-2097275-1247412018 -o /tmp/evaluation-result-2097275-1247412018/solver-2097275-1247412018 -C 1800 -W 2000 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -cp abscon112V4.jar abscon.Resolution mac.xml 1 XSax HOME/instance-2097275-1247412018.xml

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

MD5SUM BENCH= 975c174ddd3fe86ae18e7a03c329b104
RANDOM SEED=382733627

node21.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		: 3000.240
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		: 3000.240
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:       1747840 kB
Buffers:         42956 kB
Cached:         110520 kB
SwapCached:          0 kB
Active:         190740 kB
Inactive:        59924 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1747840 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2144 kB
Writeback:           0 kB
Mapped:         117612 kB
Slab:            42556 kB
Committed_AS:   986668 kB
PageTables:       1932 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= 66404 MiB
End job on node21 at 2009-07-12 17:20:19