Trace number 200271

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 ACUNSAT 1.22181 1.24494

DiagnosticValue
CHECKS6222966
NODES1298

General information on the benchmark

NamequeensKnights/
queensKnights-15-5-mul.xml
MD5SUMd0c23e5e195ecce2eff3bc99255f875e
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 benchmark1.00285
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables20
Number of constraints190
Maximum constraint arity2
Maximum domain size225
Number of constraints which are defined in extension0
Number of constraints which are defined in intension190
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=mac.xml
0.34	   
0.35	   instance
0.35	     name=/tmp/evaluation/200271-1168072116/unknown.xml
0.37	   
0.37	   domains being loaded...
0.38	   
0.38	   variables being loaded...
0.41	     nbVariables=20  nbDomainTypes=2  minDomainSize=15  maxDomainSize=225
0.41	       =>  wckTime=0.094  cpuTime=0.09  mem=6M951
0.41	   
0.41	   predicates being loaded...
0.42	   
0.42	   constraints being loaded...
0.65	     nbConstraints=190  nbConvertedConstraints=190  nbConvertConstraintsChecks=155025  nbExtensionStructures=31
0.65	     nbSharedExtensionStructures=159  nbConflictsStructures=31  nbSharedConflictsStructures=159
0.65	     nbSharedBinaryRepresentations=4330  maxDegree=19  maxArity=2
0.65	       =>  wckTime=0.337  cpuTime=0.29  mem=9M910
0.69	   
0.69	   solver IterativeSystematicSolver being built... 
0.84	       =>  wckTime=0.523  cpuTime=0.41  mem=13M609
0.84	   
0.84	   preprocessing
0.84	     nbConstraintChecks=0  nbPropagations=20  nbRevisions=0  nbUselessRevisions=0  nbRemovedValues=0
0.84	     detectedInconsistency=no
0.84	       =>  wckTime=0.0020  cpuTime=0.0  mem=13M609
0.89	   
0.89	   search
0.89	     run=0  nbConstraintChecks=144748  nbPropagations=378  nbRevisions=1764  nbUselessRevisions=969  nbAssignments=29
0.89	     nbFailedAssignments=13  nbBacktracks=10  nbVisitedNodes=51  nbRestartNogoods=0  mapSize=10  nbInferences=0
0.89	     nbTooLargeKeys=0
0.89	       =>  wckTime=0.044  cpuTime=0.03  mem=13M609
0.98	   
0.98	   search
0.98	     run=1  nbConstraintChecks=1604583  nbPropagations=2995  nbRevisions=8266  nbUselessRevisions=3712
0.99	     nbAssignments=368  nbFailedAssignments=329  nbBacktracks=25  nbVisitedNodes=712  nbRestartNogoods=6  mapSize=19
0.99	     nbInferences=0  nbTooLargeKeys=0
0.99	       =>  wckTime=0.144  cpuTime=0.12  mem=13M609
1.05	   
1.05	   search
1.05	     run=2  nbConstraintChecks=2779692  nbPropagations=7407  nbRevisions=19158  nbUselessRevisions=8205
1.05	     nbAssignments=615  nbFailedAssignments=547  nbBacktracks=47  nbVisitedNodes=1188  nbRestartNogoods=8  mapSize=35
1.05	     nbInferences=0  nbTooLargeKeys=0
1.05	       =>  wckTime=0.205  cpuTime=0.18  mem=13M609
1.16	   
1.16	   search
1.16	     run=3  nbConstraintChecks=4968023  nbPropagations=15042  nbRevisions=37164  nbUselessRevisions=15299
1.16	     nbAssignments=1077  nbFailedAssignments=970  nbBacktracks=81  nbVisitedNodes=2086  nbRestartNogoods=10  mapSize=55
1.16	     nbInferences=0  nbTooLargeKeys=0
1.16	       =>  wckTime=0.317  cpuTime=0.29  mem=13M609
1.22	   
1.22	   search
1.22	     run=4  nbConstraintChecks=6222966  nbPropagations=24368  nbRevisions=61319  nbUselessRevisions=26379
1.22	     nbAssignments=1298  nbFailedAssignments=1191  nbBacktracks=82  nbVisitedNodes=2528  nbRestartNogoods=11  mapSize=55
1.22	     nbInferences=0  nbTooLargeKeys=0
1.22	       =>  wckTime=0.383  cpuTime=0.35  mem=13M609
1.23	   
1.23	   global
1.23	     nbConstraintChecks=6222966  nbPropagations=24388  nbRevisions=61319  nbUselessRevisions=26379  nbRestartNogoods=11
1.23	     solvingWckTime=0.383  solvingCpuTime=0.35  expiredTime=no  totalExploration=yes  nbFoundSolutions=0
1.23	     globalCpuTime=0.8
1.23	       =>  wckTime=0.909  cpuTime=0.76  mem=13M609
1.23	   
1.23	s UNSATISFIABLE
1.23	d NODES 1298
1.23	d CHECKS 6222966
1.23	   
1.23	   totalWckTime=0.984  totalCpuTime=0.8

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/node33/watcher-200271-1168072116 -o ROOT/results/node33/solver-200271-1168072116 -C 1800 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar mac.xml 1 XSax /tmp/evaluation/200271-1168072116/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: 0.92 0.99 0.99 3/68 10037
/proc/meminfo: memFree=1167888/2055920 swapFree=4192224/4192956
[pid=10036] ppid=10034 vsize=172 CPUtime=0
/proc/10036/stat : 10036 (java) R 10034 10036 9965 0 -1 0 217 0 0 0 0 0 0 0 18 0 1 0 155605419 176128 24 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 10944811 0 0 4096 0 0 0 0 17 0 0 0
/proc/10036/statm: 43 24 18 14 0 3 0

[startup+0.105665 s]
/proc/loadavg: 0.92 0.99 0.99 3/68 10037
/proc/meminfo: memFree=1167888/2055920 swapFree=4192224/4192956
[pid=10036] ppid=10034 vsize=912908 CPUtime=0.08
/proc/10036/stat : 10036 (java) R 10034 10036 9965 0 -1 0 2805 0 1 0 6 2 0 0 24 0 8 0 155605419 934817792 2551 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 0 0 0
/proc/10036/statm: 228227 2551 1390 14 0 215128 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 912908

[startup+0.517746 s]
/proc/loadavg: 0.92 0.99 0.99 3/68 10037
/proc/meminfo: memFree=1167888/2055920 swapFree=4192224/4192956
[pid=10036] ppid=10034 vsize=915464 CPUtime=0.48
/proc/10036/stat : 10036 (java) S 10034 10036 9965 0 -1 0 6647 0 1 0 44 4 0 0 16 0 8 0 155605419 937435136 6386 18446744073709551615 134512640 134570532 4294956480 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/10036/statm: 228866 6386 2165 14 0 215336 0
Current children cumulated CPU time (s) 0.48
Current children cumulated vsize (KiB) 915464

Child status: 0
Real time (s): 1.24494
CPU time (s): 1.22181
CPU user time (s): 1.13583
CPU system time (s): 0.085986
CPU usage (%): 98.142
Max. virtual memory (cumulated for all children) (KiB): 915464

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.13583
system time used= 0.085986
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 8463
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= 733
involuntary context switches= 139

runsolver used 0.001999 s user time and 0.014997 s system time

The end

Launcher Data (download as text)

Begin job on node33 on Sat Jan  6 08:28:36 UTC 2007


IDJOB= 200271
IDBENCH= 3699
FILE ID= node33/200271-1168072116

PBS_JOBID= 3475967

Free space on /tmp= 66555 MiB

BENCH NAME= HOME/pub/bench/CPAI06/queensKnights/queensKnights-15-5-mul.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar mac.xml 1 XSax /tmp/evaluation/200271-1168072116/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node33/watcher-200271-1168072116 -o ROOT/results/node33/solver-200271-1168072116 -C 1800 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar mac.xml 1 XSax /tmp/evaluation/200271-1168072116/unknown.xml

META MD5SUM SOLVER= 9b91398c18c9fe54a6c4cfb50dadce08
MD5SUM BENCH=  d0c23e5e195ecce2eff3bc99255f875e

RANDOM SEED= 196917177

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		: 3000.281
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		: 3000.281
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:       1168368 kB
Buffers:         42572 kB
Cached:         742380 kB
SwapCached:        448 kB
Active:         103688 kB
Inactive:       701068 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1168368 kB
SwapTotal:     4192956 kB
SwapFree:      4192224 kB
Dirty:            1948 kB
Writeback:           0 kB
Mapped:          29304 kB
Slab:            68592 kB
Committed_AS:  2615784 kB
PageTables:       1616 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= 66552 MiB



End job on node33 on Sat Jan  6 08:28:37 UTC 2007