Trace number 197049

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 ESACSAT 2.80157 2.8598

DiagnosticValue
CHECKS2533552
NODES18183

General information on the benchmark

Namebqwh/bqwh-18-141/
bqwh-18-141-69_ext.xml
MD5SUM2b7370fa48096843ca4d6bc5594f9dd8
Bench Category2-ARY-EXT (binary constraints in extension)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.103983
SatisfiableYES
(Un)Satisfiability was provedYES
Number of variables141
Number of constraints966
Maximum constraint arity2
Maximum domain size6
Number of constraints which are defined in extension966
Number of constraints which are defined in intension0
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/197049-1168125193/unknown.xml
0.37	   
0.37	   domains being loaded...
0.40	   
0.40	   variables being loaded...
0.44	     nbVariables=141  nbDomainTypes=139  minDomainSize=1  maxDomainSize=6
0.44	       =>  wckTime=0.128  cpuTime=0.11  mem=6M886
0.44	   
0.44	   relations being loaded...
0.47	   
0.47	   constraints being loaded...
0.65	     nbConstraints=848  nbRelationTypes=209  nbSingletonDomainVariables=1  nbExtensionStructures=848
0.65	     nbSharedExtensionStructures=0  nbConflictsStructures=848  nbSharedConflictsStructures=0
0.65	     nbSharedBinaryRepresentations=6191  maxDegree=14  maxArity=2
0.65	       =>  wckTime=0.339  cpuTime=0.24  mem=11M762
0.69	   
0.69	   solver IterativeSystematicSolver being built... 
0.85	       =>  wckTime=0.54  cpuTime=0.36  mem=15M83
0.91	   
0.91	   preprocessing
0.91	     nbConstraintChecks=10597  nbPropagations=1347  nbRevisions=3635  nbUselessRevisions=2287  nbSingletonTests=172
0.91	     nbEffectiveSingletonTests=0  nbESACBranches=9  nbRemovedValues=3  detectedInconsistency=no
0.91	       =>  wckTime=0.062  cpuTime=0.04  mem=15M83
0.94	   
0.94	   search
0.94	     run=0  nbConstraintChecks=3243  nbPropagations=1645  nbRevisions=4826  nbUselessRevisions=2956  nbAssignments=50
0.94	     nbFailedAssignments=5  nbBacktracks=15  nbVisitedNodes=63  nbRestartNogoods=0  mapSize=9  nbInferences=0
0.94	     nbTooLargeKeys=0
0.94	       =>  wckTime=0.091  cpuTime=0.06  mem=16M75
0.95	   
0.95	   search
0.95	     run=1  nbConstraintChecks=7484  nbPropagations=3656  nbRevisions=11335  nbUselessRevisions=6952  nbAssignments=97
0.95	     nbFailedAssignments=9  nbBacktracks=34  nbVisitedNodes=119  nbRestartNogoods=3  mapSize=16  nbInferences=0
0.95	     nbTooLargeKeys=0
0.95	       =>  wckTime=0.1  cpuTime=0.06  mem=16M75
0.96	   
0.96	   search
0.96	     run=2  nbConstraintChecks=11001  nbPropagations=5986  nbRevisions=19220  nbUselessRevisions=11779
0.96	     nbAssignments=144  nbFailedAssignments=12  nbBacktracks=57  nbVisitedNodes=174  nbRestartNogoods=5  mapSize=23
0.96	     nbInferences=0  nbTooLargeKeys=0
0.96	       =>  wckTime=0.108  cpuTime=0.07  mem=16M75
0.97	   
0.97	   search
0.97	     run=3  nbConstraintChecks=17005  nbPropagations=8813  nbRevisions=29536  nbUselessRevisions=18116
0.97	     nbAssignments=215  nbFailedAssignments=23  nbBacktracks=96  nbVisitedNodes=265  nbRestartNogoods=6  mapSize=40
0.97	     nbInferences=0  nbTooLargeKeys=0
0.97	       =>  wckTime=0.118  cpuTime=0.08  mem=16M75
0.99	   
0.99	   search
0.99	     run=4  nbConstraintChecks=25273  nbPropagations=12292  nbRevisions=43022  nbUselessRevisions=26310
0.99	     nbAssignments=304  nbFailedAssignments=36  nbBacktracks=146  nbVisitedNodes=380  nbRestartNogoods=9  mapSize=66
0.99	     nbInferences=0  nbTooLargeKeys=0
0.99	       =>  wckTime=0.133  cpuTime=0.09  mem=16M75
1.01	   
1.01	   search
1.01	     run=5  nbConstraintChecks=36842  nbPropagations=16809  nbRevisions=61355  nbUselessRevisions=37653
1.01	     nbAssignments=478  nbFailedAssignments=54  nbBacktracks=230  nbVisitedNodes=560  nbRestartNogoods=12  mapSize=93
1.01	     nbInferences=0  nbTooLargeKeys=0
1.01	       =>  wckTime=0.154  cpuTime=0.11  mem=16M75
1.03	   
1.03	   search
1.03	     run=6  nbConstraintChecks=54236  nbPropagations=22707  nbRevisions=86630  nbUselessRevisions=53253
1.03	     nbAssignments=670  nbFailedAssignments=78  nbBacktracks=363  nbVisitedNodes=780  nbRestartNogoods=16  mapSize=141
1.03	     nbInferences=0  nbTooLargeKeys=0
1.03	       =>  wckTime=0.176  cpuTime=0.13  mem=16M75
1.06	   
1.06	   search
1.06	     run=7  nbConstraintChecks=74598  nbPropagations=30216  nbRevisions=120055  nbUselessRevisions=73861
1.06	     nbAssignments=902  nbFailedAssignments=111  nbBacktracks=544  nbVisitedNodes=1086  nbRestartNogoods=17  mapSize=209
1.06	     nbInferences=0  nbTooLargeKeys=0
1.06	       =>  wckTime=0.203  cpuTime=0.15  mem=16M75
1.10	   
1.10	   search
1.10	     run=8  nbConstraintChecks=115822  nbPropagations=40588  nbRevisions=170061  nbUselessRevisions=104709
1.10	     nbAssignments=1233  nbFailedAssignments=168  nbBacktracks=811  nbVisitedNodes=1534  nbRestartNogoods=20
1.10	     mapSize=319  nbInferences=0  nbTooLargeKeys=0
1.10	       =>  wckTime=0.246  cpuTime=0.19  mem=16M75
1.17	   
1.18	   search
1.18	     run=9  nbConstraintChecks=176458  nbPropagations=55432  nbRevisions=247048  nbUselessRevisions=153479
1.18	     nbAssignments=1734  nbFailedAssignments=255  nbBacktracks=1195  nbVisitedNodes=2195  nbRestartNogoods=22
1.18	     mapSize=468  nbInferences=0  nbTooLargeKeys=0
1.18	       =>  wckTime=0.322  cpuTime=0.27  mem=16M75
1.27	   
1.27	   search
1.27	     run=10  nbConstraintChecks=263256  nbPropagations=77117  nbRevisions=361448  nbUselessRevisions=226454
1.27	     nbAssignments=2460  nbFailedAssignments=368  nbBacktracks=1773  nbVisitedNodes=3164  nbRestartNogoods=28
1.27	     mapSize=723  nbInferences=0  nbTooLargeKeys=0
1.27	       =>  wckTime=0.416  cpuTime=0.34  mem=16M75
1.39	   
1.39	   INFO : Stopping hyperNogood (mapSize=1016, nbTooLargekeys=0, mem=16M75)
1.39	   
1.39	   search
1.39	     run=11  nbConstraintChecks=411159  nbPropagations=109175  nbRevisions=539900  nbUselessRevisions=341537
1.39	     nbAssignments=3495  nbFailedAssignments=520  nbBacktracks=2641  nbVisitedNodes=4526  nbRestartNogoods=31
1.39	       =>  wckTime=0.541  cpuTime=0.47  mem=16M75
1.55	   
1.55	   search
1.55	     run=12  nbConstraintChecks=641919  nbPropagations=158083  nbRevisions=815770  nbUselessRevisions=519669
1.55	     nbAssignments=5156  nbFailedAssignments=856  nbBacktracks=3940  nbVisitedNodes=6837  nbRestartNogoods=36
1.55	       =>  wckTime=0.701  cpuTime=0.63  mem=16M75
1.79	   
1.79	   search
1.79	     run=13  nbConstraintChecks=999178  nbPropagations=232635  nbRevisions=1252046  nbUselessRevisions=806386
1.79	     nbAssignments=7605  nbFailedAssignments=1325  nbBacktracks=5899  nbVisitedNodes=10195  nbRestartNogoods=39
1.79	       =>  wckTime=0.942  cpuTime=0.86  mem=16M75
2.15	   
2.15	   search
2.15	     run=14  nbConstraintChecks=1519973  nbPropagations=343881  nbRevisions=1903365  nbUselessRevisions=1229090
2.15	     nbAssignments=11305  nbFailedAssignments=2084  nbBacktracks=8824  nbVisitedNodes=15384  nbRestartNogoods=44
2.15	       =>  wckTime=1.296  cpuTime=1.22  mem=16M75
2.69	   
2.69	   search
2.69	     run=15  nbConstraintChecks=2337057  nbPropagations=512030  nbRevisions=2904039  nbUselessRevisions=1880868
2.69	     nbAssignments=16687  nbFailedAssignments=3067  nbBacktracks=13207  nbVisitedNodes=22861  nbRestartNogoods=48
2.69	       =>  wckTime=1.837  cpuTime=1.75  mem=16M75
2.82	   
2.82	   search
2.82	     run=16  nbConstraintChecks=2522955  nbPropagations=693689  nbRevisions=3985072  nbUselessRevisions=2585936
2.82	     nbAssignments=18183  nbFailedAssignments=3292  nbBacktracks=14337  nbVisitedNodes=24856  nbRestartNogoods=51
2.82	       =>  wckTime=1.971  cpuTime=1.89  mem=16M75
2.82	   
2.82	   global
2.82	     nbConstraintChecks=2533552  nbPropagations=695036  nbRevisions=3988707  nbUselessRevisions=2588223
2.82	     nbRestartNogoods=51  solvingWckTime=1.973  solvingCpuTime=1.89  expiredTime=no  totalExploration=no
2.82	     nbFoundSolutions=1  globalCpuTime=2.3
2.82	       =>  wckTime=2.515  cpuTime=2.25  mem=16M75
2.83	   
2.83	s SATISFIABLE
2.83	v 1 3 15 12 11 17 14 0 4 7 11 16 8 2 0 6 17 15 7 11 2 3 9 14 10 17 8 16 14 7 15 13 13 3 14 11 9 2 12 16 11 3 2 5 0 8 14 16 11 3 16 9 10 15 2 17 13 7 11 16 12 9 3 6 7 1 13 10 17 12 15 4 15 8 2 13 10 1 9 5 15 11 4 14 7 1 13 2 9 14 6 2 1 0 13 11 9 8 11 4 7 16 5 8 14 7 9 17 4 5 0 5 13 8 2 15 4 10 5 3 10 6 13 15 8 17 2 1 16 5 10 4 6 16 12 6 11 8 5 10 14 
2.83	d NODES 18183
2.83	d CHECKS 2533552
2.83	   
2.83	   totalWckTime=2.592  totalCpuTime=2.3

Verifier Data (download as text)

OK

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node4/watcher-197049-1168125193 -o ROOT/results/node4/solver-197049-1168125193 -C 1800 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/197049-1168125193/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: 1.42 1.68 1.83 4/88 27626
/proc/meminfo: memFree=1780112/2055920 swapFree=4182144/4192956
[pid=27625] ppid=27623 vsize=172 CPUtime=0
/proc/27625/stat : 27625 (java) R 27623 27625 27558 0 -1 0 217 0 0 0 0 0 0 0 18 0 1 0 160915727 176128 24 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 10588964 0 0 4096 0 0 0 0 17 0 0 0
/proc/27625/statm: 43 24 18 14 0 3 0

[startup+0.107592 s]
/proc/loadavg: 1.42 1.68 1.83 4/88 27626
/proc/meminfo: memFree=1780112/2055920 swapFree=4182144/4192956
[pid=27625] ppid=27623 vsize=913228 CPUtime=0.07
/proc/27625/stat : 27625 (java) S 27623 27625 27558 0 -1 0 2903 0 1 0 6 1 0 0 22 0 8 0 160915727 935145472 2649 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/27625/statm: 228307 2650 1396 14 0 215208 0
Current children cumulated CPU time (s) 0.07
Current children cumulated vsize (KiB) 913228

[startup+0.515629 s]
/proc/loadavg: 1.42 1.68 1.83 4/88 27626
/proc/meminfo: memFree=1780112/2055920 swapFree=4182144/4192956
[pid=27625] ppid=27623 vsize=915328 CPUtime=0.47
/proc/27625/stat : 27625 (java) R 27623 27625 27558 0 -1 0 6367 0 1 0 44 3 0 0 25 0 8 0 160915727 937295872 6106 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/27625/statm: 228832 6106 2140 14 0 215302 0
Current children cumulated CPU time (s) 0.47
Current children cumulated vsize (KiB) 915328

[startup+1.33671 s]
/proc/loadavg: 1.42 1.68 1.83 3/95 27633
/proc/meminfo: memFree=1755416/2055920 swapFree=4182144/4192956
[pid=27625] ppid=27623 vsize=915568 CPUtime=1.29
/proc/27625/stat : 27625 (java) R 27623 27625 27558 0 -1 0 8968 0 1 0 123 6 0 0 25 0 8 0 160915727 937541632 8706 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4073871436 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/27625/statm: 228892 8706 2524 14 0 215362 0
[pid=27625/tid=27627] ppid=27623 vsize=915568 CPUtime=0.03
/proc/27625/task/27627/stat : 27627 (java) S 27623 27625 27558 0 -1 64 325 0 0 0 3 0 0 0 16 0 8 0 160915732 937541632 8706 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 0 0 23759 0 0 0 -1 0 0 0
[pid=27625/tid=27628] ppid=27623 vsize=915568 CPUtime=0
/proc/27625/task/27628/stat : 27628 (java) S 27623 27625 27558 0 -1 64 10 0 0 0 0 0 0 0 16 0 8 0 160915732 937541632 8706 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27625/tid=27629] ppid=27623 vsize=915568 CPUtime=0
/proc/27625/task/27629/stat : 27629 (java) S 27623 27625 27558 0 -1 64 5 0 0 0 0 0 0 0 15 0 8 0 160915732 937541632 8706 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27625/tid=27630] ppid=27623 vsize=915568 CPUtime=0
/proc/27625/task/27630/stat : 27630 (java) S 27623 27625 27558 0 -1 64 0 0 0 0 0 0 0 0 22 0 8 0 160915736 937541632 8706 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27625/tid=27631] ppid=27623 vsize=915568 CPUtime=0.25
/proc/27625/task/27631/stat : 27631 (java) S 27623 27625 27558 0 -1 64 414 0 0 0 24 1 0 0 15 0 8 0 160915736 937541632 8706 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27625/tid=27632] ppid=27623 vsize=915568 CPUtime=0
/proc/27625/task/27632/stat : 27632 (java) S 27623 27625 27558 0 -1 64 1 0 0 0 0 0 0 0 23 0 8 0 160915736 937541632 8706 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
[pid=27625/tid=27633] ppid=27623 vsize=915568 CPUtime=0
/proc/27625/task/27633/stat : 27633 (java) S 27623 27625 27558 0 -1 64 1 0 0 0 0 0 0 0 15 0 8 0 160915736 937541632 8706 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 0 0 0 -1 0 0 0
Current children cumulated CPU time (s) 1.29
Current children cumulated vsize (KiB) 915568

Child status: 0
Real time (s): 2.8598
CPU time (s): 2.80157
CPU user time (s): 2.72159
CPU system time (s): 0.079987
CPU usage (%): 97.9639
Max. virtual memory (cumulated for all children) (KiB): 915568

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 2.72159
system time used= 0.079987
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 9095
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= 1425
involuntary context switches= 1620

runsolver used 0.009998 s user time and 0.015997 s system time

The end

Launcher Data (download as text)

Begin job on node4 on Sat Jan  6 23:13:17 UTC 2007


IDJOB= 197049
IDBENCH= 3435
FILE ID= node4/197049-1168125193

PBS_JOBID= 3477565

Free space on /tmp= 66305 MiB

BENCH NAME= HOME/pub/bench/CPAI06/bqwh/bqwh-18-141/bqwh-18-141-69_ext.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/197049-1168125193/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node4/watcher-197049-1168125193 -o ROOT/results/node4/solver-197049-1168125193 -C 1800 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/197049-1168125193/unknown.xml

META MD5SUM SOLVER= 9b91398c18c9fe54a6c4cfb50dadce08
MD5SUM BENCH=  2b7370fa48096843ca4d6bc5594f9dd8

RANDOM SEED= 620086868

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		: 3000.223
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		: 3000.223
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:       1780592 kB
Buffers:         32572 kB
Cached:         113136 kB
SwapCached:       2464 kB
Active:         138060 kB
Inactive:        83116 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1780592 kB
SwapTotal:     4192956 kB
SwapFree:      4182144 kB
Dirty:            1948 kB
Writeback:           0 kB
Mapped:          86268 kB
Slab:            38712 kB
Committed_AS:  4088732 kB
PageTables:       2444 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= 66305 MiB



End job on node4 on Sat Jan  6 23:13:30 UTC 2007