Trace number 2086827

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 2.1.1UNSAT 1.58576 1.60753

General information on the benchmark

Namecsp/langford4/
normalized-langford-4-3.xml
MD5SUMaa253ebcb4b244774c05961391955ab9
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 benchmark0.008998
Satisfiable
(Un)Satisfiability was proved
Number of variables12
Number of constraints75
Maximum constraint arity2
Maximum domain size12
Number of constraints which are defined in extension0
Number of constraints which are defined in intension75
Global constraints used (with number of constraints)

Solver Data 

0.09/0.13	c SAT4J: a SATisfiability library for Java (c) 2004-2008 Daniel Le Berre
0.09/0.13	c This is free software under the dual EPL/GNU LGPL licenses.
0.09/0.13	c See www.sat4j.org for details.
0.09/0.13	c That software uses the Rhino library from the Mozilla project.
0.09/0.14	c version 2.1.1.v20090622
0.09/0.14	c sun.arch.data.model	32
0.09/0.14	c java.version	1.6.0_12
0.09/0.14	c os.name	Linux
0.09/0.14	c os.version	2.6.9-22.EL.rootsmp
0.09/0.14	c os.arch	i386
0.09/0.14	c Free memory 671000808
0.09/0.14	c Max memory 672137216
0.09/0.14	c Total memory 672137216
0.09/0.15	c Number of processors 2
0.18/0.23	c c --- Begin Solver configuration ---
0.18/0.23	c Stops conflict analysis at the first Unique Implication Point
0.18/0.23	c org.sat4j.minisat.constraints.MixedDataStructureDanielWL@f0eed6
0.18/0.23	c Learn all clauses as in MiniSAT
0.18/0.23	c claDecay=0.999 varDecay=0.95 conflictBoundIncFactor=1.5 initConflictBound=100 
0.18/0.23	c VSIDS like heuristics from MiniSAT using a heap phase appearing in latest learned clause
0.18/0.23	c Expensive reason simplification
0.18/0.23	c MiniSAT restarts strategy
0.18/0.23	c Memory based learned constraints deletion strategy
0.18/0.23	c timeout=2147483s
0.18/0.23	c DB Simplification allowed=false
0.18/0.23	c --- End Solver configuration ---
0.18/0.23	c solving HOME/instance-2086827-1247384495.xml
0.18/0.23	c reading problem ... 
0.38/0.46	c reading problem named null
0.38/0.46	c reading domains done.
0.38/0.47	c reading variables done.
0.38/0.48	c reading predicates  done.
0.58/0.69	c reading constraints
1.48/1.58	c done with constraints.
1.48/1.58	c ... done. Wall clock time 1.352s.
1.48/1.58	c #vars     144
1.48/1.58	c #constraints  1437
1.48/1.58	c constraints type 
1.48/1.58	c org.sat4j.minisat.constraints.cnf.OriginalWLClause => 1227
1.48/1.58	c org.sat4j.minisat.constraints.card.AtLeast => 12
1.48/1.58	c org.sat4j.minisat.constraints.cnf.OriginalBinaryClause => 108
1.48/1.58	c starts		: 0
1.48/1.58	c conflicts		: 0
1.48/1.58	c decisions		: 0
1.48/1.58	c propagations		: 38
1.48/1.58	c inspects		: 166
1.48/1.58	c learnt literals	: 0
1.48/1.58	c learnt binary clauses	: 0
1.48/1.58	c learnt ternary clauses	: 0
1.48/1.58	c learnt clauses	: 0
1.48/1.58	c ignored clauses	: 0
1.48/1.58	c root simplifications	: 0
1.48/1.58	c removed literals (reason simplification)	: 0
1.48/1.58	c reason swapping (by a shorter reason)	: 0
1.48/1.59	c Calls to reduceDB	: 0
1.48/1.59	c speed (assignments/second)	: 9500.0
1.48/1.59	c non guided choices	0
1.48/1.59	c learnt constraints type 
1.48/1.59	c constraints type 
1.48/1.59	c org.sat4j.minisat.constraints.cnf.OriginalWLClause => 1227
1.48/1.59	c org.sat4j.minisat.constraints.card.AtLeast => 12
1.48/1.59	c org.sat4j.minisat.constraints.cnf.OriginalBinaryClause => 108
1.48/1.59	s UNSATISFIABLE
1.48/1.59	c Total wall clock time (in seconds) : 1.357

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-2086827-1247384495/watcher-2086827-1247384495 -o /tmp/evaluation-result-2086827-1247384495/solver-2086827-1247384495 -C 1800 -W 2000 -M 900 java6 -server -Xms650m -Xmx650m -jar HOME/sat4j-csp.jar HOME/instance-2086827-1247384495.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: 2.00 2.00 2.00 4/80 26817
/proc/meminfo: memFree=1825872/2055920 swapFree=4192812/4192956
[pid=26817] ppid=26815 vsize=152 CPUtime=0
/proc/26817/stat : 26817 (java) R 26815 26817 26571 0 -1 0 204 0 0 0 0 0 0 0 18 0 1 0 25513032 155648 26 996147200 134512640 134550932 4294956016 18446744073709551615 2618148 0 0 4096 0 0 0 0 17 0 0 0
/proc/26817/statm: 38 26 19 9 0 4 0

[startup+0.0443581 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 26817
/proc/meminfo: memFree=1825872/2055920 swapFree=4192812/4192956
[pid=26817] ppid=26815 vsize=802032 CPUtime=0.03
/proc/26817/stat : 26817 (java) S 26815 26817 26571 0 -1 0 2543 0 1 0 2 1 0 0 18 0 7 0 25513032 821280768 2290 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 0 0 16784584 18446744073709551615 0 0 17 0 0 0
/proc/26817/statm: 200508 2291 988 9 0 197859 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 802032

[startup+0.102377 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 26817
/proc/meminfo: memFree=1825872/2055920 swapFree=4192812/4192956
[pid=26817] ppid=26815 vsize=804560 CPUtime=0.09
/proc/26817/stat : 26817 (java) S 26815 26817 26571 0 -1 0 3063 0 1 0 7 2 0 0 18 0 12 0 25513032 823869440 2806 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/26817/statm: 201140 2807 1083 9 0 198474 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 804560

[startup+0.301383 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 26817
/proc/meminfo: memFree=1825872/2055920 swapFree=4192812/4192956
[pid=26817] ppid=26815 vsize=805764 CPUtime=0.28
/proc/26817/stat : 26817 (java) S 26815 26817 26571 0 -1 0 4358 0 1 0 25 3 0 0 18 0 12 0 25513032 825102336 4096 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/26817/statm: 201441 4096 1363 9 0 198768 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 805764

[startup+0.701416 s]
/proc/loadavg: 2.00 2.00 2.00 4/80 26817
/proc/meminfo: memFree=1825872/2055920 swapFree=4192812/4192956
[pid=26817] ppid=26815 vsize=807368 CPUtime=0.68
/proc/26817/stat : 26817 (java) S 26815 26817 26571 0 -1 0 6457 0 1 0 64 4 0 0 18 0 12 0 25513032 826744832 5837 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/26817/statm: 201842 5837 1387 9 0 199169 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 807368

[startup+1.50149 s]
/proc/loadavg: 2.00 2.00 2.00 4/92 26829
/proc/meminfo: memFree=1803824/2055920 swapFree=4192812/4192956
[pid=26817] ppid=26815 vsize=811124 CPUtime=1.48
/proc/26817/stat : 26817 (java) S 26815 26817 26571 0 -1 0 9743 0 1 0 141 7 0 0 18 0 12 0 25513032 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/26817/statm: 202781 7281 1414 9 0 200108 0
[pid=26817/tid=26819] ppid=26815 vsize=811124 CPUtime=0.72
/proc/26817/task/26819/stat : 26819 (java) R 26815 26817 26571 0 -1 64 4974 0 1 0 69 3 0 0 25 0 12 0 25513033 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26820] ppid=26815 vsize=811124 CPUtime=0
/proc/26817/task/26820/stat : 26820 (java) S 26815 26817 26571 0 -1 64 2 0 0 0 0 0 0 0 20 0 12 0 25513034 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26821] ppid=26815 vsize=811124 CPUtime=0
/proc/26817/task/26821/stat : 26821 (java) S 26815 26817 26571 0 -1 64 0 0 0 0 0 0 0 0 21 0 12 0 25513034 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26822] ppid=26815 vsize=811124 CPUtime=0
/proc/26817/task/26822/stat : 26822 (java) S 26815 26817 26571 0 -1 64 3 0 0 0 0 0 0 0 16 0 12 0 25513036 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 0 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26823] ppid=26815 vsize=811124 CPUtime=0
/proc/26817/task/26823/stat : 26823 (java) S 26815 26817 26571 0 -1 64 10 0 0 0 0 0 0 0 23 0 12 0 25513037 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26824] ppid=26815 vsize=811124 CPUtime=0
/proc/26817/task/26824/stat : 26824 (java) S 26815 26817 26571 0 -1 64 4 0 0 0 0 0 0 0 24 0 12 0 25513037 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26825] ppid=26815 vsize=811124 CPUtime=0
/proc/26817/task/26825/stat : 26825 (java) S 26815 26817 26571 0 -1 64 1 0 0 0 0 0 0 0 25 0 12 0 25513041 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26826] ppid=26815 vsize=811124 CPUtime=0.01
/proc/26817/task/26826/stat : 26826 (java) S 26815 26817 26571 0 -1 64 172 0 0 0 1 0 0 0 18 0 12 0 25513041 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26827] ppid=26815 vsize=811124 CPUtime=0.72
/proc/26817/task/26827/stat : 26827 (java) R 26815 26817 26571 0 -1 64 3856 0 0 0 70 2 0 0 17 0 12 0 25513041 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 105872364 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26828] ppid=26815 vsize=811124 CPUtime=0
/proc/26817/task/26828/stat : 26828 (java) S 26815 26817 26571 0 -1 64 0 0 0 0 0 0 0 0 25 0 12 0 25513041 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26829] ppid=26815 vsize=811124 CPUtime=0
/proc/26817/task/26829/stat : 26829 (java) S 26815 26817 26571 0 -1 64 0 0 0 0 0 0 0 0 15 0 12 0 25513041 830590976 7281 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 811124

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

[startup+1.6025 s]
/proc/loadavg: 2.00 2.00 2.00 4/92 26829
/proc/meminfo: memFree=1803824/2055920 swapFree=4192812/4192956
[pid=26817] ppid=26815 vsize=811448 CPUtime=1.57
/proc/26817/stat : 26817 (java) S 26815 26817 26571 0 -1 0 9848 0 1 0 150 7 0 0 18 0 10 0 25513032 830922752 7386 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 0 0 16800975 18446744073709551615 0 0 17 0 0 0
/proc/26817/statm: 202862 7386 1420 9 0 200189 0
[pid=26817/tid=26819] ppid=26815 vsize=811448 CPUtime=0.74
/proc/26817/task/26819/stat : 26819 (java) R 26815 26817 26571 0 -1 64 5057 0 1 0 71 3 0 0 24 0 9 0 25513033 830922752 7386 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 0 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26820] ppid=26815 vsize=811448 CPUtime=0
/proc/26817/task/26820/stat : 26820 (java) S 26815 26817 26571 0 -1 64 2 0 0 0 0 0 0 0 20 0 8 0 25513034 830922752 7386 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 0 4 0 16800975 0 0 0 -1 0 0 0
[pid=26817/tid=26821] ppid=26815 vsize=811448 CPUtime=0
/proc/26817/task/26821/stat : 26821 (java) R 26815 26817 26571 0 -1 64 0 0 0 0 0 0 0 0 16 0 8 0 25513034 830922752 7386 996147200 134512640 134550932 4294956016 18446744073709551615 4294960144 256 4 0 16800975 0 0 0 -1 0 0 0
Current children cumulated CPU time (s) 1.57
Current children cumulated vsize (KiB) 811448

Child status: 0
Real time (s): 1.60753
CPU time (s): 1.58576
CPU user time (s): 1.50877
CPU system time (s): 0.076988
CPU usage (%): 98.6458
Max. virtual memory (cumulated for all children) (KiB): 812764

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.50877
system time used= 0.076988
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 9848
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= 310
involuntary context switches= 275

runsolver used 0.008998 second user time and 0.008998 second system time

The end

Launcher Data 

Begin job on node51 at 2009-07-12 09:41:35
IDJOB=2086827
IDBENCH=58648
IDSOLVER=731
FILE ID=node51/2086827-1247384495
PBS_JOBID= 9507269
Free space on /tmp= 66204 MiB

SOLVER NAME= SAT4J CSP 2.1.1
BENCH NAME= CPAI08/csp/langford4/normalized-langford-4-3.xml
COMMAND LINE= java6 -server -Xms650m -Xmx650m -jar HOME/sat4j-csp.jar BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2086827-1247384495/watcher-2086827-1247384495 -o /tmp/evaluation-result-2086827-1247384495/solver-2086827-1247384495 -C 1800 -W 2000 -M 900  java6 -server -Xms650m -Xmx650m -jar HOME/sat4j-csp.jar HOME/instance-2086827-1247384495.xml

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

MD5SUM BENCH= aa253ebcb4b244774c05961391955ab9
RANDOM SEED=1102608828

node51.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		: 3000.225
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		: 3000.225
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:       1826352 kB
Buffers:         12384 kB
Cached:          69556 kB
SwapCached:          0 kB
Active:         150508 kB
Inactive:        26652 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1826352 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1204 kB
Writeback:           0 kB
Mapped:         113144 kB
Slab:            37560 kB
Committed_AS:   938472 kB
PageTables:       1960 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= 66204 MiB
End job on node51 at 2009-07-12 09:41:37