Trace number 1084001

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
SAT4J CSP 2008-06-13UNSAT 0.867868 0.920867

General information on the benchmark

Namecsp/super-queens/
normalized-super-queens-11.xml
MD5SUMd024b00d7492160e14e33ed9f6aa64a5
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 benchmark0.005998
Satisfiable
(Un)Satisfiability was proved
Number of variables8
Number of constraints22
Maximum constraint arity2
Maximum domain size4
Number of constraints which are defined in extension0
Number of constraints which are defined in intension22
Global constraints used (with number of constraints)

Solver Data (download as text)

0.19/0.29	c SAT4J: a SATisfiability library for Java (c) 2004-2008 Daniel Le Berre
0.19/0.29	c This is free software under the dual EPL/GNU LGPL licenses.
0.19/0.29	c See www.sat4j.org for details.
0.19/0.29	c That software uses the Rhino library from the Mozilla project.
0.29/0.33	c version 9.9.9.token
0.29/0.33	c sun.arch.data.model	32
0.29/0.33	c java.version	1.6.0_06
0.29/0.33	c os.name	Linux
0.29/0.33	c os.version	2.6.9-22.EL.rootsmp
0.29/0.33	c os.arch	i386
0.29/0.33	c Free memory 669864272
0.29/0.33	c Max memory 672137216
0.29/0.33	c Total memory 672137216
0.29/0.33	c Number of processors 2
0.29/0.37	c c --- Begin Solver configuration ---
0.29/0.37	c Stops conflict analysis at the first Unique Implication Point
0.29/0.37	c org.sat4j.minisat.constraints.MixedDataStructureDaniel@1d2068d
0.29/0.37	c Learn all clauses as in MiniSAT
0.29/0.37	c claDecay=0.999 varDecay=0.95 conflictBoundIncFactor=1.5 initConflictBound=100 
0.29/0.37	c VSIDS like heuristics from MiniSAT using a heap phase appearing in latest learned clause
0.29/0.37	c Expensive reason simplification
0.29/0.37	c MiniSAT restarts strategy
0.29/0.37	c timeout=2147483s
0.29/0.37	c DB Simplification allowed=false
0.29/0.37	c --- End Solver configuration ---
0.29/0.37	c solving HOME/instance-1084001-1215229622.xml
0.29/0.37	c reading problem ... 
0.59/0.61	c reading problem named null
0.59/0.61	c reading domains done.
0.59/0.61	c reading variables done.
0.59/0.64	c reading predicates  done.
0.79/0.81	c reading constraints
0.79/0.86	c done with constraints.
0.79/0.86	c ... done. Wall clock time 0.482s.
0.79/0.86	c #vars     32
0.79/0.86	c #constraints  192
0.79/0.86	c constraints type 
0.79/0.86	c org.sat4j.minisat.constraints.cnf.OriginalWLClause => 184
0.79/0.86	c org.sat4j.minisat.constraints.card.AtLeast => 8
0.79/0.86	c starts		: 1
0.79/0.86	c conflicts		: 5
0.79/0.86	c decisions		: 4
0.79/0.86	c propagations		: 48
0.79/0.86	c inspects		: 385
0.79/0.86	c learnt literals	: 1
0.79/0.86	c learnt binary clauses	: 0
0.79/0.86	c learnt ternary clauses	: 3
0.79/0.86	c learnt clauses	: 3
0.79/0.86	c ignored clauses	: 0
0.79/0.86	c root simplifications	: 0
0.79/0.86	c removed literals (reason simplification)	: 2
0.79/0.86	c reason swapping (by a shorter reason)	: 0
0.79/0.86	c Calls to reduceDB	: 0
0.79/0.86	c speed (assignments/second)	: 6857.142857142857
0.79/0.86	c non guided choices	4
0.79/0.86	s UNSATISFIABLE
0.79/0.87	c Total wall clock time (in seconds) : 0.49

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

runsolver version 3.2.5 (c) roussel@cril.univ-artois.fr

command line: /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1084001-1215229622/watcher-1084001-1215229622 -o /tmp/evaluation-result-1084001-1215229622/solver-1084001-1215229622 -C 1800 -W 2200 -M 900 --output-limit 1,15 java6 -server -Xms650m -Xmx650m -jar HOME/sat4jcsp.jar HOME/instance-1084001-1215229622.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): 2200 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
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.25 2.09 2.02 4/92 23758
/proc/meminfo: memFree=1530624/2055920 swapFree=4122856/4192956
[pid=23758] ppid=23756 vsize=152 CPUtime=0
/proc/23758/stat : 23758 (java) R 23756 23758 23202 0 -1 0 211 0 0 0 0 0 0 0 18 0 1 0 1552637272 155648 26 996147200 134512640 134550740 4294956016 18446744073709551615 9696036 0 0 4096 0 0 0 0 17 0 0 0
/proc/23758/statm: 38 26 19 9 0 4 0

[startup+0.011694 s]
/proc/loadavg: 2.25 2.09 2.02 4/92 23758
/proc/meminfo: memFree=1530624/2055920 swapFree=4122856/4192956
[pid=23758] ppid=23756 vsize=13376 CPUtime=0
/proc/23758/stat : 23758 (java) S 23756 23758 23202 0 -1 0 814 0 0 0 0 0 0 0 18 0 2 0 1552637272 13697024 589 996147200 134512640 134550740 4294956016 18446744073709551615 4294960144 0 0 0 16784584 18446744073709551615 0 0 17 0 0 0
/proc/23758/statm: 3344 589 257 9 0 1244 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 13376

[startup+0.10133 s]
/proc/loadavg: 2.25 2.09 2.02 4/92 23758
/proc/meminfo: memFree=1530624/2055920 swapFree=4122856/4192956
[pid=23758] ppid=23756 vsize=804756 CPUtime=0.08
/proc/23758/stat : 23758 (java) S 23756 23758 23202 0 -1 0 3167 0 1 0 6 2 0 0 18 0 12 0 1552637272 824070144 2898 996147200 134512640 134550740 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/23758/statm: 201189 2898 1165 9 0 198558 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 804756

[startup+0.301348 s]
/proc/loadavg: 2.25 2.09 2.02 4/92 23758
/proc/meminfo: memFree=1530624/2055920 swapFree=4122856/4192956
[pid=23758] ppid=23756 vsize=808212 CPUtime=0.29
/proc/23758/stat : 23758 (java) S 23756 23758 23202 0 -1 0 5051 0 1 0 25 4 0 0 18 0 12 0 1552637272 827609088 4378 996147200 134512640 134550740 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/23758/statm: 202053 4378 1308 9 0 199422 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 808212

[startup+0.701392 s]
/proc/loadavg: 2.25 2.09 2.02 4/92 23758
/proc/meminfo: memFree=1530624/2055920 swapFree=4122856/4192956
[pid=23758] ppid=23756 vsize=808240 CPUtime=0.69
/proc/23758/stat : 23758 (java) S 23756 23758 23202 0 -1 0 6741 0 1 0 63 6 0 0 18 0 12 0 1552637272 827637760 5829 996147200 134512640 134550740 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/23758/statm: 202060 5829 1342 9 0 199422 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 808240

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

[startup+0.901404 s]
/proc/loadavg: 2.25 2.09 2.02 4/92 23758
/proc/meminfo: memFree=1530624/2055920 swapFree=4122856/4192956
[pid=23758] ppid=23756 vsize=808888 CPUtime=0.85
/proc/23758/stat : 23758 (java) S 23756 23758 23202 0 -1 0 7266 0 1 0 79 6 0 0 18 0 12 0 1552637272 828301312 6353 996147200 134512640 134550740 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/23758/statm: 202222 6353 1345 9 0 199584 0
Current children cumulated CPU time (s) 0.85
Current children cumulated vsize (KiB) 808888

Child status: 0
Real time (s): 0.920867
CPU time (s): 0.867868
CPU user time (s): 0.795879
CPU system time (s): 0.071989
CPU usage (%): 94.2447
Max. virtual memory (cumulated for all children) (KiB): 808888

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.795879
system time used= 0.071989
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 7269
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= 150
involuntary context switches= 179

runsolver used 0.003999 second user time and 0.012998 second system time

The end

Launcher Data (download as text)

Begin job on node12 at 2008-07-05 05:47:02
IDJOB=1084001
IDBENCH=57519
IDSOLVER=344
FILE ID=node12/1084001-1215229622
PBS_JOBID= 7881889
Free space on /tmp= 66336 MiB

SOLVER NAME= SAT4J CSP 2008-06-13
BENCH NAME= CPAI08/csp/super-queens/normalized-super-queens-11.xml
COMMAND LINE= java6 -server -Xms650m -Xmx650m -jar HOME/sat4jcsp.jar BENCHNAME
RUNSOLVER COMMAND LINE= /home/evaluation/evaluation/pub/bin/runsolver --timestamp -w /tmp/evaluation-result-1084001-1215229622/watcher-1084001-1215229622 -o /tmp/evaluation-result-1084001-1215229622/solver-1084001-1215229622 -C 1800 -W 2200 -M 900 --output-limit 1,15  java6 -server -Xms650m -Xmx650m -jar HOME/sat4jcsp.jar HOME/instance-1084001-1215229622.xml

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 900 MiB

MD5SUM BENCH= d024b00d7492160e14e33ed9f6aa64a5
RANDOM SEED=560070674

node12.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		: 3000.236
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:       1531104 kB
Buffers:         43196 kB
Cached:         200428 kB
SwapCached:      64552 kB
Active:         392020 kB
Inactive:        78548 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1531104 kB
SwapTotal:     4192956 kB
SwapFree:      4122856 kB
Dirty:            1356 kB
Writeback:           0 kB
Mapped:         243660 kB
Slab:            38796 kB
Committed_AS:  3688728 kB
PageTables:       2396 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= 66336 MiB
End job on node12 at 2008-07-05 05:47:03