Trace number 2082362

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
pcs 0.3.2UNSAT 6.97594 7.02929

DiagnosticValue
ASSIGNMENTS8512

General information on the benchmark

Namecsp/langford2/
normalized-langford-2-9.xml
MD5SUMa6e5333bd6daf1b78d27284171344f47
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 benchmark0.199968
Satisfiable
(Un)Satisfiability was proved
Number of variables18
Number of constraints162
Maximum constraint arity2
Maximum domain size18
Number of constraints which are defined in extension0
Number of constraints which are defined in intension162
Global constraints used (with number of constraints)

Solver Data 

0.00/0.01	c has operations which may create big domains
0.00/0.01	c big-domain mode
0.18/0.20	c Seed is 1783017076
0.18/0.20	c Constructing HOME/instance-2082362-1247720986.xml 
0.18/0.20	c deduced all_different(V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15,V16,V17,V0)
0.18/0.20	c  with 163 constraints
0.18/0.20	c Solving 8512 backtracks 13 restarts
6.93/7.02	s UNSATISFIABLE
6.93/7.02	d ASSIGNMENTS 8512

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-2082362-1247720986/watcher-2082362-1247720986 -o /tmp/evaluation-result-2082362-1247720986/solver-2082362-1247720986 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1783017076 HOME/instance-2082362-1247720986.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: 1.93 2.00 1.99 3/72 19887
/proc/meminfo: memFree=1178700/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=5356 CPUtime=0
/proc/19887/stat : 19887 (pcssolve) S 19885 19887 17142 0 -1 4194304 305 151 0 0 0 0 0 0 16 0 1 0 59163290 5484544 242 996147200 4194304 4889804 548682068800 18446744073709551615 256364831556 0 65536 4100 65538 18446744071563356171 0 0 17 1 0 0
/proc/19887/statm: 1339 242 201 169 0 50 0
[pid=19889] ppid=19887 vsize=5356 CPUtime=0
/proc/19889/stat : 19889 (pcssolve) R 19887 19887 17142 0 -1 4194368 22 0 0 0 0 0 0 0 20 0 1 0 59163290 5484544 244 996147200 4194304 4889804 548682068800 18446744073709551615 256364834087 0 0 4096 0 0 0 0 17 0 0 0
/proc/19889/statm: 1339 244 203 169 0 50 0

[startup+0.103505 s]
/proc/loadavg: 1.93 2.00 1.99 3/72 19887
/proc/meminfo: memFree=1178700/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=4756 CPUtime=0.08
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 913 814 0 0 8 0 0 0 18 0 1 0 59163290 4870144 522 996147200 134512640 135215973 4294956304 18446744073709551615 4158960004 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 1189 522 408 171 0 114 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4756

[startup+0.20151 s]
/proc/loadavg: 1.93 2.00 1.99 3/72 19887
/proc/meminfo: memFree=1178700/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=5016 CPUtime=0.18
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 981 814 0 0 18 0 0 0 18 0 1 0 59163290 5136384 590 996147200 134512640 135215973 4294956304 18446744073709551615 4158960012 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 1254 590 408 171 0 179 0
Current children cumulated CPU time (s) 0.18
Current children cumulated vsize (KiB) 5016

[startup+0.30152 s]
/proc/loadavg: 1.93 2.00 1.99 3/72 19887
/proc/meminfo: memFree=1178700/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=5276 CPUtime=0.28
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 1053 814 0 0 28 0 0 0 19 0 1 0 59163290 5402624 662 996147200 134512640 135215973 4294956304 18446744073709551615 134677950 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 1319 662 408 171 0 244 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5276

[startup+0.701563 s]
/proc/loadavg: 1.93 2.00 1.99 3/72 19887
/proc/meminfo: memFree=1178700/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=6488 CPUtime=0.68
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 1331 814 0 0 68 0 0 0 23 0 1 0 59163290 6643712 940 996147200 134512640 135215973 4294956304 18446744073709551615 134739651 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 1622 940 408 171 0 547 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6488

[startup+1.50165 s]
/proc/loadavg: 1.93 2.00 1.99 3/73 19893
/proc/meminfo: memFree=1173508/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=8708 CPUtime=1.48
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 1859 814 0 0 147 1 0 0 25 0 1 0 59163290 8916992 1468 996147200 134512640 135215973 4294956304 18446744073709551615 134587951 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 2177 1468 408 171 0 1102 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 8708

[startup+3.10509 s]
/proc/loadavg: 1.93 2.00 1.99 3/73 19893
/proc/meminfo: memFree=1168132/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=12196 CPUtime=3.07
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 2792 814 0 0 305 2 0 0 25 0 1 0 59163290 12488704 2336 996147200 134512640 135215973 4294956304 18446744073709551615 134532677 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 3049 2336 408 171 0 1974 0
Current children cumulated CPU time (s) 3.07
Current children cumulated vsize (KiB) 12196

[startup+6.30115 s]
/proc/loadavg: 1.93 2.00 1.99 3/73 19893
/proc/meminfo: memFree=1154692/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=20112 CPUtime=6.24
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 4903 814 0 0 621 3 0 0 25 0 1 0 59163290 20594688 4285 996147200 134512640 135215973 4294956304 18446744073709551615 134591344 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 5028 4285 408 171 0 3953 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 20112

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

[startup+6.40115 s]
/proc/loadavg: 1.93 2.00 1.99 3/73 19893
/proc/meminfo: memFree=1154692/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=20372 CPUtime=6.33
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 4964 814 0 0 630 3 0 0 25 0 1 0 59163290 20860928 4346 996147200 134512640 135215973 4294956304 18446744073709551615 134533002 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 5093 4346 408 171 0 4018 0
Current children cumulated CPU time (s) 6.33
Current children cumulated vsize (KiB) 20372

[startup+6.8012 s]
/proc/loadavg: 1.93 2.00 1.99 3/73 19893
/proc/meminfo: memFree=1149124/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=21676 CPUtime=6.73
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 5336 814 0 0 669 4 0 0 25 0 1 0 59163290 22196224 4653 996147200 134512640 135215973 4294956304 18446744073709551615 134600626 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 5419 4653 408 171 0 4344 0
Current children cumulated CPU time (s) 6.73
Current children cumulated vsize (KiB) 21676

[startup+7.00122 s]
/proc/loadavg: 1.93 2.00 1.99 3/73 19893
/proc/meminfo: memFree=1149124/2055920 swapFree=4192812/4192956
[pid=19887] ppid=19885 vsize=22192 CPUtime=6.93
/proc/19887/stat : 19887 (pcs.big) R 19885 19887 17142 0 -1 4194304 5456 814 0 0 689 4 0 0 25 0 1 0 59163290 22724608 4773 996147200 134512640 135215973 4294956304 18446744073709551615 10694140 0 0 4096 0 0 0 0 17 0 0 0
/proc/19887/statm: 5548 4773 408 171 0 4473 0
Current children cumulated CPU time (s) 6.93
Current children cumulated vsize (KiB) 22192

Child status: 0
Real time (s): 7.02929
CPU time (s): 6.97594
CPU user time (s): 6.92495
CPU system time (s): 0.050992
CPU usage (%): 99.241
Max. virtual memory (cumulated for all children) (KiB): 22192

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 6.92495
system time used= 0.050992
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 6273
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 23
involuntary context switches= 114

runsolver used 0.018997 second user time and 0.036994 second system time

The end

Launcher Data 

Begin job on node90 at 2009-07-16 07:09:46
IDJOB=2082362
IDBENCH=57578
IDSOLVER=733
FILE ID=node90/2082362-1247720986
PBS_JOBID= 9521331
Free space on /tmp= 66096 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/langford2/normalized-langford-2-9.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2082362-1247720986/watcher-2082362-1247720986 -o /tmp/evaluation-result-2082362-1247720986/solver-2082362-1247720986 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1783017076 HOME/instance-2082362-1247720986.xml

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

MD5SUM BENCH= a6e5333bd6daf1b78d27284171344f47
RANDOM SEED=1783017076

node90.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		: 3000.212
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		: 3000.212
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	: 5996.54
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1179180 kB
Buffers:         94812 kB
Cached:         319308 kB
SwapCached:          0 kB
Active:         392344 kB
Inactive:       378884 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1179180 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            2160 kB
Writeback:           0 kB
Mapped:         362492 kB
Slab:            90296 kB
Committed_AS:   960856 kB
PageTables:       2456 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= 66096 MiB
End job on node90 at 2009-07-16 07:09:53