Trace number 2086939

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-restart 0.3.2UNSAT 75.7855 76.1705

DiagnosticValue
ASSIGNMENTS12387

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
0.00/0.01	c Seed is 1571726535
0.00/0.01	c Constructing HOME/instance-2086939-1247727004.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,V51,V0)
0.00/0.06	c  with 1366 constraints
0.00/0.06	c Solving 12387 backtracks 14 restarts
75.70/76.14	s UNSATISFIABLE
75.70/76.14	d ASSIGNMENTS 12387

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-2086939-1247727004/watcher-2086939-1247727004 -o /tmp/evaluation-result-2086939-1247727004/solver-2086939-1247727004 -C 1800 -W 2000 -M 900 HOME/pcssolve -s 1571726535 HOME/instance-2086939-1247727004.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: 1.92 1.95 1.83 4/81 15281
/proc/meminfo: memFree=1564432/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=5356 CPUtime=0
/proc/15281/stat : 15281 (pcssolve) R 15279 15281 15125 0 -1 4194304 290 0 0 0 0 0 0 0 21 0 1 0 59766639 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 233588714143 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/15281/statm: 1339 241 200 169 0 50 0
[pid=15282] ppid=15281 vsize=0 CPUtime=0
/proc/15282/stat : 15282 (fgrep) Z 15281 15281 15125 0 -1 4194316 155 0 0 0 0 0 0 0 18 0 1 0 59766639 0 0 996147200 0 0 0 0 0 0 0 4096 0 18446744071563351923 0 0 17 0 0 0
/proc/15282/statm: 0 0 0 0 0 0 0
[pid=15283] ppid=15281 vsize=5356 CPUtime=0
/proc/15283/stat : 15283 (pcssolve) R 15281 15281 15125 0 -1 4194368 0 0 0 0 0 0 0 0 21 0 1 0 59766639 5484544 241 996147200 4194304 4889804 548682068800 18446744073709551615 233588714143 0 65538 4100 65536 0 0 0 17 1 0 0
/proc/15283/statm: 1339 241 200 169 0 50 0

[startup+0.069896 s]
/proc/loadavg: 1.92 1.95 1.83 4/81 15281
/proc/meminfo: memFree=1564432/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=4812 CPUtime=0.05
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 900 656 0 0 5 0 0 0 24 0 1 0 59766639 4927488 531 996147200 134512640 135215973 4294956304 18446744073709551615 134585720 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 1203 531 406 171 0 128 0
Current children cumulated CPU time (s) 0.05
Current children cumulated vsize (KiB) 4812

[startup+0.101934 s]
/proc/loadavg: 1.92 1.95 1.83 4/81 15281
/proc/meminfo: memFree=1564432/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=5092 CPUtime=0.08
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 961 656 0 0 8 0 0 0 24 0 1 0 59766639 5214208 592 996147200 134512640 135215973 4294956304 18446744073709551615 134983076 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 1273 592 408 171 0 198 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 5092

[startup+0.301938 s]
/proc/loadavg: 1.92 1.95 1.83 4/81 15281
/proc/meminfo: memFree=1564432/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=5352 CPUtime=0.28
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 1045 656 0 0 28 0 0 0 25 0 1 0 59766639 5480448 676 996147200 134512640 135215973 4294956304 18446744073709551615 4158960003 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 1338 676 408 171 0 263 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5352

[startup+0.702012 s]
/proc/loadavg: 1.92 1.95 1.83 4/81 15281
/proc/meminfo: memFree=1564432/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=6140 CPUtime=0.68
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 1229 656 0 0 67 1 0 0 25 0 1 0 59766639 6287360 860 996147200 134512640 135215973 4294956304 18446744073709551615 134588312 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 1535 860 408 171 0 460 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 6140

[startup+1.50116 s]
/proc/loadavg: 1.92 1.95 1.83 3/82 15286
/proc/meminfo: memFree=1561928/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=7716 CPUtime=1.48
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 1620 656 0 0 147 1 0 0 25 0 1 0 59766639 7901184 1251 996147200 134512640 135215973 4294956304 18446744073709551615 134739666 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 1929 1251 408 171 0 854 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 7716

[startup+3.10144 s]
/proc/loadavg: 1.92 1.95 1.83 3/82 15286
/proc/meminfo: memFree=1559688/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=10856 CPUtime=3.07
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 2425 656 0 0 306 1 0 0 25 0 1 0 59766639 11116544 2023 996147200 134512640 135215973 4294956304 18446744073709551615 134599879 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 2714 2023 408 171 0 1639 0
Current children cumulated CPU time (s) 3.07
Current children cumulated vsize (KiB) 10856

[startup+6.30203 s]
/proc/loadavg: 1.93 1.95 1.83 3/82 15286
/proc/meminfo: memFree=1553288/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=16944 CPUtime=6.25
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 3988 656 0 0 623 2 0 0 25 0 1 0 59766639 17350656 3521 996147200 134512640 135215973 4294956304 18446744073709551615 134939371 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 4236 3521 408 171 0 3161 0
Current children cumulated CPU time (s) 6.25
Current children cumulated vsize (KiB) 16944

[startup+12.7012 s]
/proc/loadavg: 1.93 1.95 1.83 3/82 15286
/proc/meminfo: memFree=1541000/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=28876 CPUtime=12.62
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 7091 656 0 0 1258 4 0 0 25 0 1 0 59766639 29569024 6495 996147200 134512640 135215973 4294956304 18446744073709551615 134589845 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 7219 6495 408 171 0 6144 0
Current children cumulated CPU time (s) 12.62
Current children cumulated vsize (KiB) 28876

[startup+25.5015 s]
/proc/loadavg: 1.95 1.96 1.83 3/82 15286
/proc/meminfo: memFree=1515336/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=54156 CPUtime=25.36
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 13628 656 0 0 2527 9 0 0 25 0 1 0 59766639 55455744 12742 996147200 134512640 135215973 4294956304 18446744073709551615 4158960407 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 13539 12742 408 171 0 12464 0
Current children cumulated CPU time (s) 25.36
Current children cumulated vsize (KiB) 54156

[startup+51.1012 s]
/proc/loadavg: 1.96 1.96 1.83 3/82 15286
/proc/meminfo: memFree=1468808/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=101724 CPUtime=50.82
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 25944 656 0 0 5066 16 0 0 25 0 1 0 59766639 104165376 24480 996147200 134512640 135215973 4294956304 18446744073709551615 4158960148 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 25431 24480 408 171 0 24356 0
Current children cumulated CPU time (s) 50.82
Current children cumulated vsize (KiB) 101724

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

[startup+63.9015 s]
/proc/loadavg: 1.97 1.96 1.83 3/82 15286
/proc/meminfo: memFree=1446024/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=122880 CPUtime=63.56
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 31445 656 0 0 6337 19 0 0 25 0 1 0 59766639 125829120 29981 996147200 134512640 135215973 4294956304 18446744073709551615 134742278 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 30720 29981 408 171 0 29645 0
Current children cumulated CPU time (s) 63.56
Current children cumulated vsize (KiB) 122880

[startup+70.3016 s]
/proc/loadavg: 1.97 1.96 1.84 3/82 15286
/proc/meminfo: memFree=1435144/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=137200 CPUtime=69.93
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 35112 656 0 0 6972 21 0 0 25 0 1 0 59766639 140492800 32623 996147200 134512640 135215973 4294956304 18446744073709551615 4158961147 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 34300 32623 408 171 0 33225 0
Current children cumulated CPU time (s) 69.93
Current children cumulated vsize (KiB) 137200

[startup+73.5022 s]
/proc/loadavg: 1.97 1.96 1.84 3/82 15286
/proc/meminfo: memFree=1431432/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=142300 CPUtime=73.12
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 36455 656 0 0 7290 22 0 0 25 0 1 0 59766639 145715200 33966 996147200 134512640 135215973 4294956304 18446744073709551615 135094885 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 35575 33966 408 171 0 34500 0
Current children cumulated CPU time (s) 73.12
Current children cumulated vsize (KiB) 142300

[startup+75.1015 s]
/proc/loadavg: 1.97 1.96 1.84 3/82 15286
/proc/meminfo: memFree=1427976/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=144656 CPUtime=74.7
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 37051 656 0 0 7448 22 0 0 25 0 1 0 59766639 148127744 34562 996147200 134512640 135215973 4294956304 18446744073709551615 11120481 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 36164 34562 408 171 0 35089 0
Current children cumulated CPU time (s) 74.7
Current children cumulated vsize (KiB) 144656

[startup+75.9067 s]
/proc/loadavg: 1.97 1.96 1.84 3/82 15286
/proc/meminfo: memFree=1426248/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=145312 CPUtime=75.51
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 37369 656 0 0 7528 23 0 0 25 0 1 0 59766639 148799488 34772 996147200 134512640 135215973 4294956304 18446744073709551615 134532677 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 36328 34772 408 171 0 35253 0
Current children cumulated CPU time (s) 75.51
Current children cumulated vsize (KiB) 145312

[startup+76.1017 s]
/proc/loadavg: 1.97 1.96 1.84 3/82 15286
/proc/meminfo: memFree=1426248/2055920 swapFree=4192812/4192956
[pid=15281] ppid=15279 vsize=145312 CPUtime=75.7
/proc/15281/stat : 15281 (pcs.big) R 15279 15281 15125 0 -1 4194304 37369 656 0 0 7547 23 0 0 25 0 1 0 59766639 148799488 34772 996147200 134512640 135215973 4294956304 18446744073709551615 134532677 0 0 4096 0 0 0 0 17 0 0 0
/proc/15281/statm: 36328 34772 408 171 0 35253 0
Current children cumulated CPU time (s) 75.7
Current children cumulated vsize (KiB) 145312

Child status: 0
Real time (s): 76.1705
CPU time (s): 75.7855
CPU user time (s): 75.5215
CPU system time (s): 0.263959
CPU usage (%): 99.4945
Max. virtual memory (cumulated for all children) (KiB): 145696

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 75.5215
system time used= 0.263959
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 38028
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= 13
involuntary context switches= 2586

runsolver used 0.077988 second user time and 0.277957 second system time

The end

Launcher Data 

Begin job on node27 at 2009-07-16 08:50:04
IDJOB=2086939
IDBENCH=58661
IDSOLVER=734
FILE ID=node27/2086939-1247727004
PBS_JOBID= 9521563
Free space on /tmp= 66244 MiB

SOLVER NAME= pcs-restart 0.2.restart
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-2086939-1247727004/watcher-2086939-1247727004 -o /tmp/evaluation-result-2086939-1247727004/solver-2086939-1247727004 -C 1800 -W 2000 -M 900  HOME/pcssolve -s 1571726535 HOME/instance-2086939-1247727004.xml

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

MD5SUM BENCH= d1502112199290bf597f7a6ca87f2090
RANDOM SEED=1571726535

node27.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		: 2800.239
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	: 5521.40
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		: 2800.239
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:       1564912 kB
Buffers:         74332 kB
Cached:         261044 kB
SwapCached:          0 kB
Active:         125628 kB
Inactive:       293096 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1564912 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            1956 kB
Writeback:           0 kB
Mapped:         103708 kB
Slab:            57324 kB
Committed_AS:   664948 kB
PageTables:       1944 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264948 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66240 MiB
End job on node27 at 2009-07-16 08:51:20