Trace number 199227

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 ESACUNSAT 1.17482 1.23158

DiagnosticValue
CHECKS7312284
NODES0

General information on the benchmark

Nameknights/
knights-20-5.xml
MD5SUM5042df59376f87303bcd262d9d1478d3
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 benchmark0.84787
SatisfiableNO
(Un)Satisfiability was provedNO
Number of variables5
Number of constraints10
Maximum constraint arity2
Maximum domain size400
Number of constraints which are defined in extension0
Number of constraints which are defined in intension10
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
0.35	   
0.35	   instance
0.35	     name=/tmp/evaluation/199227-1168133065/unknown.xml
0.38	   
0.38	   domains being loaded...
0.38	   
0.38	   variables being loaded...
0.41	     nbVariables=5  nbDomainTypes=1  minDomainSize=400  maxDomainSize=400
0.41	       =>  wckTime=0.098  cpuTime=0.08  mem=6M951
0.41	   
0.41	   predicates being loaded...
0.42	   
0.42	   constraints being loaded...
0.69	     nbConstraints=10  nbConvertedConstraints=10  nbConvertConstraintsChecks=320000  nbExtensionStructures=2
0.69	     nbSharedExtensionStructures=8  nbConflictsStructures=2  nbSharedConflictsStructures=8
0.69	     nbSharedBinaryRepresentations=800  maxDegree=4  maxArity=2
0.69	       =>  wckTime=0.373  cpuTime=0.34  mem=7M959
0.72	   
0.72	   solver IterativeSystematicSolver being built... 
0.89	       =>  wckTime=0.571  cpuTime=0.48  mem=13M374
1.18	   
1.18	   preprocessing
1.18	     nbConstraintChecks=7312284  nbPropagations=4039  nbRevisions=7805  nbUselessRevisions=2678  nbSingletonTests=590
1.18	     nbEffectiveSingletonTests=590  nbESACBranches=0  nbRemovedValues=1986  detectedInconsistency=yes
1.18	       =>  wckTime=0.288  cpuTime=0.25  mem=13M374
1.18	   
1.18	   global
1.18	     nbConstraintChecks=7312284  nbPropagations=4039  nbRevisions=7805  nbUselessRevisions=2678  nbRestartNogoods=0
1.18	     solvingWckTime=0.289  solvingCpuTime=0.25  expiredTime=no  totalExploration=yes  nbFoundSolutions=0
1.18	     globalCpuTime=0.78
1.18	       =>  wckTime=0.863  cpuTime=0.73  mem=13M374
1.18	   
1.18	s UNSATISFIABLE
1.18	d NODES 0
1.18	d CHECKS 7312284
1.18	   
1.18	   totalWckTime=0.95  totalCpuTime=0.78

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/node17/watcher-199227-1168133065 -o ROOT/results/node17/solver-199227-1168133065 -C 1800 -M 900 java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/199227-1168133065/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: 2.02 2.10 2.36 4/94 980
/proc/meminfo: memFree=1808088/2055920 swapFree=4192812/4192956
[pid=979] ppid=977 vsize=906644 CPUtime=0.02
/proc/979/stat : 979 (java) S 977 979 32161 0 -1 0 2069 0 1 0 1 1 0 0 18 0 2 0 161701309 928403456 1818 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 4294960144 0 4 0 7368 18446744073709551615 0 0 17 1 0 0
/proc/979/statm: 226661 1818 1036 14 0 214244 0
[pid=979/tid=981] ppid=977 vsize=906644 CPUtime=0
/proc/979/task/981/stat : 981 (java) R 977 979 32161 0 -1 64 4 0 0 0 0 0 0 0 19 0 2 0 161701313 928403456 1818 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 4294960144 0 0 0 7368 0 0 0 -1 1 0 0

[startup+0.105689 s]
/proc/loadavg: 2.02 2.10 2.36 4/94 980
/proc/meminfo: memFree=1808088/2055920 swapFree=4192812/4192956
[pid=979] ppid=977 vsize=914988 CPUtime=0.09
/proc/979/stat : 979 (java) R 977 979 32161 0 -1 0 3017 0 1 0 7 2 0 0 20 0 8 0 161701309 936947712 2763 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 4153609878 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/979/statm: 228747 2763 1435 14 0 215242 0
[pid=979/tid=981] ppid=977 vsize=914988 CPUtime=0
/proc/979/task/981/stat : 981 (java) S 977 979 32161 0 -1 64 7 0 0 0 0 0 0 0 18 0 8 0 161701313 936947712 2763 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 4294960144 0 0 0 23759 0 0 0 -1 1 0 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 914988

[startup+0.514732 s]
/proc/loadavg: 2.02 2.10 2.36 4/94 980
/proc/meminfo: memFree=1808088/2055920 swapFree=4192812/4192956
[pid=979] ppid=977 vsize=915328 CPUtime=0.49
/proc/979/stat : 979 (java) R 977 979 32161 0 -1 0 6424 0 1 0 44 5 0 0 18 0 8 0 161701309 937295872 6163 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 4294960144 0 4 0 23759 18446744073709551615 0 0 17 1 0 0
/proc/979/statm: 228832 6163 2166 14 0 215302 0
[pid=979/tid=981] ppid=977 vsize=915328 CPUtime=0
/proc/979/task/981/stat : 981 (java) S 977 979 32161 0 -1 64 7 0 0 0 0 0 0 0 18 0 8 0 161701313 937295872 6163 18446744073709551615 134512640 134570532 4294956464 18446744073709551615 4294960144 0 0 0 23759 0 0 0 -1 1 0 0
Current children cumulated CPU time (s) 0.49
Current children cumulated vsize (KiB) 915328

Child status: 0
Real time (s): 1.23158
CPU time (s): 1.17482
CPU user time (s): 1.09183
CPU system time (s): 0.082987
CPU usage (%): 95.3911
Max. virtual memory (cumulated for all children) (KiB): 915448

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.09183
system time used= 0.082987
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 8396
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= 776
involuntary context switches= 862

runsolver used 0.004999 s user time and 0.009998 s system time

The end

Launcher Data (download as text)

Begin job on node17 on Sun Jan  7 01:24:25 UTC 2007


IDJOB= 199227
IDBENCH= 3601
FILE ID= node17/199227-1168133065

PBS_JOBID= 3477745

Free space on /tmp= 66320 MiB

BENCH NAME= HOME/pub/bench/CPAI06/knights/knights-20-5.xml
COMMAND LINE= java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/199227-1168133065/unknown.xml
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node17/watcher-199227-1168133065 -o ROOT/results/node17/solver-199227-1168133065 -C 1800 -M 900  java -Xms756M -Xmx756M -XX:PermSize=10m -XX:MaxPermSize=10m -jar abscon109.jar esac.xml 1 XSax /tmp/evaluation/199227-1168133065/unknown.xml

META MD5SUM SOLVER= 9b91398c18c9fe54a6c4cfb50dadce08
MD5SUM BENCH=  5042df59376f87303bcd262d9d1478d3

RANDOM SEED= 837474690

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		: 3000.236
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		: 3000.236
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:       1808504 kB
Buffers:         34508 kB
Cached:          68852 kB
SwapCached:          0 kB
Active:         138964 kB
Inactive:        51064 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1808504 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1888 kB
Writeback:           0 kB
Mapped:         113592 kB
Slab:            42024 kB
Committed_AS:  4200280 kB
PageTables:       2384 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= 66320 MiB



End job on node17 on Sun Jan  7 01:24:27 UTC 2007