Trace number 2086938

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 63.7993 64.4099

DiagnosticValue
ASSIGNMENTS10368

General information on the benchmark

Namecsp/langford4/
normalized-langford-4-13.xml
MD5SUMd1502112199290bf597f7a6ca87f2090
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 benchmark2.28565
Satisfiable
(Un)Satisfiability was proved
Number of variables52
Number of constraints1365
Maximum constraint arity2
Maximum domain size52
Number of constraints which are defined in extension0
Number of constraints which are defined in intension1365
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 1755652173
0.00/0.02	c Constructing HOME/instance-2086938-1247727003.xml 
0.01/0.06	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,V51,V0)
0.01/0.06	c  with 1366 constraints
0.01/0.06	c Solving 10368 backtracks 14 restarts
63.67/64.38	s UNSATISFIABLE
63.67/64.38	d ASSIGNMENTS 10368

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-2086938-1247727003/watcher-2086938-1247727003 -o /tmp/evaluation-result-2086938-1247727003/solver-2086938-1247727003 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1755652173 HOME/instance-2086938-1247727003.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: 2.23 2.11 2.02 4/81 15505
/proc/meminfo: memFree=1566520/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=5356 CPUtime=0
/proc/15505/stat : 15505 (pcssolve) R 15503 15505 15163 0 -1 4194304 290 0 0 0 0 0 0 0 24 0 1 0 59766348 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 210824129183 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/15505/statm: 1339 241 200 169 0 50 0
[pid=15506] ppid=15505 vsize=3676 CPUtime=0
/proc/15506/stat : 15506 (fgrep) R 15505 15505 15163 0 -1 4194304 126 0 0 0 0 0 0 0 25 0 1 0 59766348 3764224 93 996147200 4194304 4274172 548682068976 18446744073709551615 210824253892 0 0 4096 0 0 0 0 17 1 0 0
/proc/15506/statm: 919 93 75 19 0 43 0

[startup+0.0383261 s]
/proc/loadavg: 2.23 2.11 2.02 4/81 15505
/proc/meminfo: memFree=1566520/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=4620 CPUtime=0.01
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 833 656 0 0 1 0 0 0 25 0 1 0 59766348 4730880 464 996147200 134512640 135215973 4294956304 18446744073709551615 11378386 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 1155 464 384 171 0 80 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 4620

[startup+0.101333 s]
/proc/loadavg: 2.23 2.11 2.02 4/81 15505
/proc/meminfo: memFree=1566520/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=5088 CPUtime=0.08
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 962 656 0 0 8 0 0 0 25 0 1 0 59766348 5210112 593 996147200 134512640 135215973 4294956304 18446744073709551615 134523588 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 1272 593 408 171 0 197 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5088

[startup+0.301357 s]
/proc/loadavg: 2.23 2.11 2.02 4/81 15505
/proc/meminfo: memFree=1566520/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=5348 CPUtime=0.28
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 1048 656 0 0 28 0 0 0 25 0 1 0 59766348 5476352 679 996147200 134512640 135215973 4294956304 18446744073709551615 134532657 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 1337 679 408 171 0 262 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5348

[startup+0.701406 s]
/proc/loadavg: 2.23 2.11 2.02 4/81 15505
/proc/meminfo: memFree=1566520/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=6264 CPUtime=0.68
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 1262 656 0 0 67 1 0 0 25 0 1 0 59766348 6414336 893 996147200 134512640 135215973 4294956304 18446744073709551615 4158960330 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 1566 893 408 171 0 491 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6264

[startup+1.5015 s]
/proc/loadavg: 2.23 2.11 2.02 3/82 15510
/proc/meminfo: memFree=1563952/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=7836 CPUtime=1.47
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 1641 656 0 0 146 1 0 0 25 0 1 0 59766348 8024064 1272 996147200 134512640 135215973 4294956304 18446744073709551615 134907926 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 1959 1272 408 171 0 884 0
Current children cumulated CPU time (s) 1.47
Current children cumulated vsize (KiB) 7836

[startup+3.1027 s]
/proc/loadavg: 2.23 2.11 2.02 3/82 15510
/proc/meminfo: memFree=1561584/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=10980 CPUtime=3.05
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 2479 656 0 0 304 1 0 0 25 0 1 0 59766348 11243520 2077 996147200 134512640 135215973 4294956304 18446744073709551615 11378520 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 2745 2077 408 171 0 1670 0
Current children cumulated CPU time (s) 3.05
Current children cumulated vsize (KiB) 10980

[startup+6.30108 s]
/proc/loadavg: 2.21 2.11 2.02 3/82 15510
/proc/meminfo: memFree=1554992/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=17644 CPUtime=6.23
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 4156 656 0 0 621 2 0 0 25 0 1 0 59766348 18067456 3689 996147200 134512640 135215973 4294956304 18446744073709551615 134591126 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 4411 3689 408 171 0 3336 0
Current children cumulated CPU time (s) 6.23
Current children cumulated vsize (KiB) 17644

[startup+12.7018 s]
/proc/loadavg: 2.19 2.11 2.02 3/82 15510
/proc/meminfo: memFree=1542576/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=29572 CPUtime=12.57
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 7240 656 0 0 1253 4 0 0 25 0 1 0 59766348 30281728 6644 996147200 134512640 135215973 4294956304 18446744073709551615 134532930 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 7393 6644 408 171 0 6318 0
Current children cumulated CPU time (s) 12.57
Current children cumulated vsize (KiB) 29572

[startup+25.5014 s]
/proc/loadavg: 2.15 2.10 2.02 3/82 15510
/proc/meminfo: memFree=1517616/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=54040 CPUtime=25.24
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 13575 656 0 0 2518 6 0 0 25 0 1 0 59766348 55336960 12689 996147200 134512640 135215973 4294956304 18446744073709551615 4158960071 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 13510 12689 408 171 0 12435 0
Current children cumulated CPU time (s) 25.24
Current children cumulated vsize (KiB) 54040

[startup+51.1015 s]
/proc/loadavg: 2.10 2.09 2.02 3/82 15510
/proc/meminfo: memFree=1472048/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=100468 CPUtime=50.6
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 25616 656 0 0 5046 14 0 0 25 0 1 0 59766348 102879232 24152 996147200 134512640 135215973 4294956304 18446744073709551615 4158960033 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 25117 24152 408 171 0 24042 0
Current children cumulated CPU time (s) 50.6
Current children cumulated vsize (KiB) 100468

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

[startup+57.5012 s]
/proc/loadavg: 2.09 2.09 2.02 3/82 15510
/proc/meminfo: memFree=1461040/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=110720 CPUtime=56.94
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 28292 656 0 0 5679 15 0 0 25 0 1 0 59766348 113377280 26828 996147200 134512640 135215973 4294956304 18446744073709551615 134584068 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 27680 26828 408 171 0 26605 0
Current children cumulated CPU time (s) 56.94
Current children cumulated vsize (KiB) 110720

[startup+60.7016 s]
/proc/loadavg: 2.08 2.09 2.02 3/82 15510
/proc/meminfo: memFree=1455664/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=115844 CPUtime=60.11
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 29622 656 0 0 5995 16 0 0 25 0 1 0 59766348 118624256 28158 996147200 134512640 135215973 4294956304 18446744073709551615 134590052 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 28961 28158 408 171 0 27886 0
Current children cumulated CPU time (s) 60.11
Current children cumulated vsize (KiB) 115844

[startup+62.3018 s]
/proc/loadavg: 2.08 2.09 2.02 3/82 15510
/proc/meminfo: memFree=1453680/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=118472 CPUtime=61.7
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 30308 656 0 0 6154 16 0 0 25 0 1 0 59766348 121315328 28844 996147200 134512640 135215973 4294956304 18446744073709551615 134603528 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 29618 28844 408 171 0 28543 0
Current children cumulated CPU time (s) 61.7
Current children cumulated vsize (KiB) 118472

[startup+63.1029 s]
/proc/loadavg: 2.08 2.09 2.02 3/82 15510
/proc/meminfo: memFree=1451888/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=119784 CPUtime=62.49
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 30634 656 0 0 6233 16 0 0 25 0 1 0 59766348 122658816 29170 996147200 134512640 135215973 4294956304 18446744073709551615 4158960683 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 29946 29170 408 171 0 28871 0
Current children cumulated CPU time (s) 62.49
Current children cumulated vsize (KiB) 119784

[startup+63.902 s]
/proc/loadavg: 2.08 2.09 2.02 3/82 15510
/proc/meminfo: memFree=1450160/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=120836 CPUtime=63.27
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 30930 656 0 0 6311 16 0 0 25 0 1 0 59766348 123736064 29466 996147200 134512640 135215973 4294956304 18446744073709551615 4158960000 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 30209 29466 408 171 0 29134 0
Current children cumulated CPU time (s) 63.27
Current children cumulated vsize (KiB) 120836

[startup+64.3011 s]
/proc/loadavg: 2.08 2.09 2.02 3/82 15510
/proc/meminfo: memFree=1450160/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=120848 CPUtime=63.67
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194304 31044 656 0 0 6351 16 0 0 25 0 1 0 59766348 123748352 29488 996147200 134512640 135215973 4294956304 18446744073709551615 134626105 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 30212 29488 408 171 0 29137 0
Current children cumulated CPU time (s) 63.67
Current children cumulated vsize (KiB) 120848

[startup+64.4011 s]
/proc/loadavg: 2.08 2.09 2.02 3/82 15510
/proc/meminfo: memFree=1450160/2055920 swapFree=4192812/4192956
[pid=15505] ppid=15503 vsize=0 CPUtime=63.78
/proc/15505/stat : 15505 (pcs.big) R 15503 15505 15163 0 -1 4194308 31047 656 0 0 6360 18 0 0 25 0 1 0 59766348 0 0 996147200 0 0 0 0 0 0 0 4096 0 0 0 0 17 1 0 0
/proc/15505/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 63.78
Current children cumulated vsize (KiB) 0

Child status: 0
Real time (s): 64.4099
CPU time (s): 63.7993
CPU user time (s): 63.6053
CPU system time (s): 0.19397
CPU usage (%): 99.0519
Max. virtual memory (cumulated for all children) (KiB): 121232

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 63.6053
system time used= 0.19397
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 31703
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= 18
involuntary context switches= 2635

runsolver used 0.077988 second user time and 0.219966 second system time

The end

Launcher Data 

Begin job on node33 at 2009-07-16 08:50:03
IDJOB=2086938
IDBENCH=58661
IDSOLVER=733
FILE ID=node33/2086938-1247727003
PBS_JOBID= 9521486
Free space on /tmp= 66424 MiB

SOLVER NAME= pcs 0.2
BENCH NAME= CPAI08/csp/langford4/normalized-langford-4-13.xml
COMMAND LINE= HOME/pcssolve -s RANDOMSEED BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-2086938-1247727003/watcher-2086938-1247727003 -o /tmp/evaluation-result-2086938-1247727003/solver-2086938-1247727003 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1755652173 HOME/instance-2086938-1247727003.xml

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

MD5SUM BENCH= d1502112199290bf597f7a6ca87f2090
RANDOM SEED=1755652173

node33.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		: 3000.229
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		: 3000.229
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:       1567000 kB
Buffers:         81320 kB
Cached:         267112 kB
SwapCached:          0 kB
Active:          92904 kB
Inactive:       309520 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1567000 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1872 kB
Writeback:           0 kB
Mapped:          74484 kB
Slab:            71544 kB
Committed_AS:   620084 kB
PageTables:       1916 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= 66424 MiB
End job on node33 at 2009-07-16 08:51:08