Trace number 2080855

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 0.3.2SAT 21.2778 21.4823

DiagnosticValue
ASSIGNMENTS6211

General information on the benchmark

Namecsp/langford3/
normalized-langford-3-17.xml
MD5SUMefdff8831deb934c09d0d62684ee6d4a
Bench Category2-ARY-INT (binary constraints in intension)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.975851
Satisfiable
(Un)Satisfiability was proved
Number of variables51
Number of constraints1309
Maximum constraint arity2
Maximum domain size51
Number of constraints which are defined in extension0
Number of constraints which are defined in intension1309
Global constraints used (with number of constraints)

Solver Data 

0.00/0.01	c has big domains
0.00/0.01	c big-domain mode
0.00/0.02	c Seed is 1273977848
0.00/0.02	c Constructing HOME/instance-2080855-1247718896.xml 
0.00/0.06	c deduced all_different(V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15,V16,V17,V18,V19,V20,V21,V22,V23,V24,V25,V26,V27,V28,V29,V30,V31,V32,V33,V34,V35,V36,V37,V38,V39,V40,V41,V42,V43,V44,V45,V46,V47,V48,V49,V50,V0)
0.00/0.06	c  with 1310 constraints
0.00/0.06	c Solving 6211 backtracks 12 restarts
21.17/21.47	s SATISFIABLE
21.17/21.47	c V0=6, V1=44, V2=41, V3=26, V4=28, V5=7, V6=3, V7=0, V8=23, V9=24, V10=13, V11=4, V12=1, V13=12, V14=16, V15=5, V16=2, V17=8, V18=47, V19=45, V20=31, V21=34, V22=14, V23=11, V24=9, V25=33, V26=35, V27=25, V28=17, V29=15, V30=27, V31=32, V32=22, V33=20, V34=10, V35=50, V36=49, V37=36, V38=40, V39=21, V40=19, V41=18, V42=43, V43=46, V44=37, V45=30, V46=29, V47=42, V48=48, V49=39, V50=38, 
21.17/21.47	v 6 44 41 26 28 7 3 0 23 24 13 4 1 12 16 5 2 8 47 45 31 34 14 11 9 33 35 25 17 15 27 32 22 20 10 50 49 36 40 21 19 18 43 46 37 30 29 42 48 39 38 
21.17/21.47	d ASSIGNMENTS 6211

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:492) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-2080855-1247718896/watcher-2080855-1247718896 -o /tmp/evaluation-result-2080855-1247718896/solver-2080855-1247718896 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1273977848 HOME/instance-2080855-1247718896.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: 1.99 2.00 2.00 4/81 13628
/proc/meminfo: memFree=1118816/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=5356 CPUtime=0
/proc/13628/stat : 13628 (pcssolve) R 13626 13628 12740 0 -1 4194304 290 0 0 0 0 0 0 0 21 0 1 0 58952807 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 218076080799 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/13628/statm: 1339 241 200 169 0 50 0
[pid=13629] ppid=13628 vsize=3676 CPUtime=0
/proc/13629/stat : 13629 (fgrep) R 13628 13628 12740 0 -1 4194304 146 0 0 0 0 0 0 0 22 0 1 0 58952808 3764224 113 996147200 4194304 4274172 548682068976 18446744073709551615 218076250194 0 0 4096 0 0 0 0 17 1 0 0
/proc/13629/statm: 919 113 85 19 0 43 0
[pid=13630] ppid=13628 vsize=5356 CPUtime=0
/proc/13630/stat : 13630 (pcssolve) R 13628 13628 12740 0 -1 4194368 0 0 0 0 0 0 0 0 21 0 1 0 58952808 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 218076080799 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/13630/statm: 1339 241 200 169 0 50 0

[startup+0.0877969 s]
/proc/loadavg: 1.99 2.00 2.00 4/81 13628
/proc/meminfo: memFree=1118816/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=4944 CPUtime=0.06
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 949 656 0 0 6 0 0 0 23 0 1 0 58952807 5062656 580 996147200 134512640 135215973 4294956304 18446744073709551615 134585809 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 1236 580 408 171 0 161 0
Current children cumulated CPU time (s) 0.06
Current children cumulated vsize (KiB) 4944

[startup+0.101799 s]
/proc/loadavg: 1.99 2.00 2.00 4/81 13628
/proc/meminfo: memFree=1118816/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=5300 CPUtime=0.08
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 1000 656 0 0 8 0 0 0 23 0 1 0 58952807 5427200 631 996147200 134512640 135215973 4294956304 18446744073709551615 134599863 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 1325 631 408 171 0 250 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5300

[startup+0.301832 s]
/proc/loadavg: 1.99 2.00 2.00 4/81 13628
/proc/meminfo: memFree=1118816/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=5564 CPUtime=0.28
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 1066 656 0 0 28 0 0 0 25 0 1 0 58952807 5697536 697 996147200 134512640 135215973 4294956304 18446744073709551615 134533005 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 1391 697 408 171 0 316 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5564

[startup+0.701899 s]
/proc/loadavg: 1.99 2.00 2.00 4/81 13628
/proc/meminfo: memFree=1118816/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=6352 CPUtime=0.68
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 1272 656 0 0 68 0 0 0 25 0 1 0 58952807 6504448 903 996147200 134512640 135215973 4294956304 18446744073709551615 4158960683 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 1588 903 408 171 0 513 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6352

[startup+1.50103 s]
/proc/loadavg: 1.99 2.00 2.00 3/82 13633
/proc/meminfo: memFree=1116184/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=7932 CPUtime=1.47
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 1682 656 0 0 147 0 0 0 25 0 1 0 58952807 8122368 1313 996147200 134512640 135215973 4294956304 18446744073709551615 134589885 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 1983 1313 408 171 0 908 0
Current children cumulated CPU time (s) 1.47
Current children cumulated vsize (KiB) 7932

[startup+3.1023 s]
/proc/loadavg: 1.99 2.00 2.00 3/82 13633
/proc/meminfo: memFree=1113496/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=11744 CPUtime=3.05
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 2633 656 0 0 305 0 0 0 25 0 1 0 58952807 12025856 2231 996147200 134512640 135215973 4294956304 18446744073709551615 134591838 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 2936 2231 408 171 0 1861 0
Current children cumulated CPU time (s) 3.05
Current children cumulated vsize (KiB) 11744

[startup+6.30184 s]
/proc/loadavg: 1.99 2.00 2.00 3/82 13633
/proc/meminfo: memFree=1106264/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=18544 CPUtime=6.22
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 4413 656 0 0 621 1 0 0 25 0 1 0 58952807 18989056 3946 996147200 134512640 135215973 4294956304 18446744073709551615 4158960050 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 4636 3946 408 171 0 3561 0
Current children cumulated CPU time (s) 6.22
Current children cumulated vsize (KiB) 18544

[startup+12.7019 s]
/proc/loadavg: 1.99 2.00 2.00 3/82 13633
/proc/meminfo: memFree=1090648/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=33992 CPUtime=12.57
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 8389 656 0 0 1253 4 0 0 25 0 1 0 58952807 34807808 7760 996147200 134512640 135215973 4294956304 18446744073709551615 135098152 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 8498 7760 408 171 0 7423 0
Current children cumulated CPU time (s) 12.57
Current children cumulated vsize (KiB) 33992

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

[startup+15.9014 s]
/proc/loadavg: 2.07 2.02 2.01 3/82 13633
/proc/meminfo: memFree=1083288/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=41700 CPUtime=15.74
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 10374 656 0 0 1569 5 0 0 25 0 1 0 58952807 42700800 9488 996147200 134512640 135215973 4294956304 18446744073709551615 134532930 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 10425 9488 408 171 0 9350 0
Current children cumulated CPU time (s) 15.74
Current children cumulated vsize (KiB) 41700

[startup+19.102 s]
/proc/loadavg: 2.07 2.02 2.01 3/82 13633
/proc/meminfo: memFree=1076248/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=48392 CPUtime=18.9
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 12096 656 0 0 1884 6 0 0 25 0 1 0 58952807 49553408 11210 996147200 134512640 135215973 4294956304 18446744073709551615 7827945 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 12098 11210 408 171 0 11023 0
Current children cumulated CPU time (s) 18.9
Current children cumulated vsize (KiB) 48392

[startup+20.7013 s]
/proc/loadavg: 2.07 2.02 2.00 3/82 13633
/proc/meminfo: memFree=1074008/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=51528 CPUtime=20.49
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 12913 656 0 0 2043 6 0 0 25 0 1 0 58952807 52764672 12027 996147200 134512640 135215973 4294956304 18446744073709551615 134590086 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 12882 12027 408 171 0 11807 0
Current children cumulated CPU time (s) 20.49
Current children cumulated vsize (KiB) 51528

[startup+21.1013 s]
/proc/loadavg: 2.07 2.02 2.00 3/82 13633
/proc/meminfo: memFree=1071768/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=52180 CPUtime=20.88
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 13106 656 0 0 2082 6 0 0 25 0 1 0 58952807 53432320 12220 996147200 134512640 135215973 4294956304 18446744073709551615 7827014 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 13045 12220 408 171 0 11970 0
Current children cumulated CPU time (s) 20.88
Current children cumulated vsize (KiB) 52180

[startup+21.3013 s]
/proc/loadavg: 2.07 2.02 2.00 3/82 13633
/proc/meminfo: memFree=1071768/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=52708 CPUtime=21.08
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 13211 656 0 0 2102 6 0 0 25 0 1 0 58952807 53972992 12325 996147200 134512640 135215973 4294956304 18446744073709551615 134599868 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 13177 12325 408 171 0 12102 0
Current children cumulated CPU time (s) 21.08
Current children cumulated vsize (KiB) 52708

[startup+21.4014 s]
/proc/loadavg: 2.07 2.02 2.00 3/82 13633
/proc/meminfo: memFree=1071768/2055920 swapFree=4192812/4192956
[pid=13628] ppid=13626 vsize=52580 CPUtime=21.17
/proc/13628/stat : 13628 (pcs.big) R 13626 13628 12740 0 -1 4194304 13274 656 0 0 2111 6 0 0 25 0 1 0 58952807 53841920 12329 996147200 134512640 135215973 4294956304 18446744073709551615 134532672 0 0 4096 0 0 0 0 17 1 0 0
/proc/13628/statm: 13145 12329 408 171 0 12070 0
Current children cumulated CPU time (s) 21.17
Current children cumulated vsize (KiB) 52580

Child status: 0
Real time (s): 21.4823
CPU time (s): 21.2778
CPU user time (s): 21.1958
CPU system time (s): 0.081987
CPU usage (%): 99.0478
Max. virtual memory (cumulated for all children) (KiB): 52708

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 21.1958
system time used= 0.081987
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 13933
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= 19
involuntary context switches= 905

runsolver used 0.035994 second user time and 0.069989 second system time

The end

Launcher Data 

Begin job on node57 at 2009-07-16 06:34:56
IDJOB=2080855
IDBENCH=57185
IDSOLVER=733
FILE ID=node57/2080855-1247718896
PBS_JOBID= 9521441
Free space on /tmp= 66356 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/langford3/normalized-langford-3-17.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2080855-1247718896/watcher-2080855-1247718896 -o /tmp/evaluation-result-2080855-1247718896/solver-2080855-1247718896 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1273977848 HOME/instance-2080855-1247718896.xml

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

MD5SUM BENCH= efdff8831deb934c09d0d62684ee6d4a
RANDOM SEED=1273977848

node57.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		: 3000.261
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		: 3000.261
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:       1119296 kB
Buffers:         84368 kB
Cached:         702460 kB
SwapCached:          0 kB
Active:         265864 kB
Inactive:       598416 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1119296 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1876 kB
Writeback:           0 kB
Mapped:          97888 kB
Slab:            57380 kB
Committed_AS:   609276 kB
PageTables:       1968 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= 66356 MiB
End job on node57 at 2009-07-16 06:35:17