Trace number 292155

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, and are wall clock time (not CPU 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
SATzilla CRAFTEDSAT 5.01124 5.01443

General information on the benchmark

Namerandom/OnTreshold/5SAT/v70/
unif-k5-r21.3-v70-c1491-S2081149830-10.SAT.shuffled.cnf
MD5SUMd0cf7e3234604bad410cc03581b4891e
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.007997
Satisfiable
(Un)Satisfiability was proved
Number of variables70
Number of clauses1491
Sum of the clauses size7455
Maximum clause length5
Minimum clause length5
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 30
Number of clauses of size 40
Number of clauses of size 51491
Number of clauses of size over 50

Solver Data (download as text)

4.92/5.01	c run March_dl for 5 seconds ... 
4.92/5.01	c Bin: Executing march_dl
4.92/5.01	c child exit by a signal
4.92/5.01	c march_dl returned code 137.
4.92/5.01	c run saps (UBCSAT implementation) for 2 seconds ... 
4.92/5.01	c Bin: Executing ubcsat2006
4.92/5.01	c child exited successfully
4.92/5.01	c ubcsat2006 returned code 10.
4.92/5.01	# 
4.92/5.01	# UBCSAT version 1.1.0pp
4.92/5.01	# 
4.92/5.01	# http://www.satlib.org/ubcsat
4.92/5.01	# 
4.92/5.01	# ubcsat -h for help
4.92/5.01	# 
4.92/5.01	#  -alg saps
4.92/5.01	#  -runs 1 
4.92/5.01	#  -cutoff 4294967295 
4.92/5.01	#  -timeout 2.000000 
4.92/5.01	#  -gtimeout 0.000000 
4.92/5.01	#  -noimprove 0 
4.92/5.01	#  -target 0 
4.92/5.01	#  -wtarget 0.000000 
4.92/5.01	#  -seed 1171750246 
4.92/5.01	#  -solve 0 
4.92/5.01	#  -find,-numsol 0 
4.92/5.01	#  -findunique 0 
4.92/5.01	#  -srestart 0 
4.92/5.01	#  -prestart 0.000000 
4.92/5.01	#  -drestart 0 
4.92/5.01	# 
4.92/5.01	#  -alpha 1.300000 
4.92/5.01	#  -rho 0.100000 
4.92/5.01	#  -ps 0.050000 
4.92/5.01	#  -wp 0.010000 
4.92/5.01	#  -sapsthresh -0.100000 
4.92/5.01	# 
4.92/5.01	# UBCSAT default output: 
4.92/5.01	#    'ubcsat -r out null' to suppress, 'ubcsat -hc' for customization help
4.92/5.01	# 
4.92/5.01	# 
4.92/5.01	# Output Columns: |run|found|best|beststep|steps|
4.92/5.01	# 
4.92/5.01	# run: Run Number
4.92/5.01	# found: Target Solution Quality Found? (1 => yes)
4.92/5.01	# best: Best (Lowest) # of False Clauses Found
4.92/5.01	# beststep: Step of Best (Lowest) # of False Clauses Found
4.92/5.01	# steps: Total Number of Search Steps
4.92/5.01	# 
4.92/5.01	#       F  Best       Step      Total 
4.92/5.01	#   Run N Sol'n         of     Search 
4.92/5.01	#   No. D Found       Best      Steps 
4.92/5.01	# 
4.92/5.01	      1 1     0        921        921 
4.92/5.01	
4.92/5.01	
4.92/5.01	Variables = 70
4.92/5.01	Clauses = 1491
4.92/5.01	TotalLiterals = 7455
4.92/5.01	TotalCPUTimeElapsed = 0.000     
4.92/5.01	FlipsPerSecond = inf    
4.92/5.01	RunsExecuted = 1
4.92/5.01	SuccessfulRuns = 1
4.92/5.01	PercentSuccess = 100.00
4.92/5.01	Steps_Mean = 921
4.92/5.01	Steps_CoeffVariance = 0
4.92/5.01	Steps_Median = 921
4.92/5.01	CPUTime_Mean = 0
4.92/5.01	CPUTime_CoeffVariance = 0
4.92/5.01	CPUTime_Median = 0
4.92/5.01	
4.92/5.01	
4.92/5.01	c 
4.92/5.01	c UBCSAT version 1.1.0pp
4.92/5.01	c 
4.92/5.01	c http://www.satlib.org/ubcsat
4.92/5.01	c 
4.92/5.01	c ubcsat -h for help
4.92/5.01	c 
4.92/5.01	c  -runs 1 
4.92/5.01	c  -cutoff 4294967295 
4.92/5.01	c  -timeout 2.000000 
4.92/5.01	c  -gtimeout 0.000000 
4.92/5.01	c  -noimprove 0 
4.92/5.01	c  -target 0 
4.92/5.01	c  -wtarget 0.000000 
4.92/5.01	c  -seed 1171750246 
4.92/5.01	c  -solve 0 
4.92/5.01	c  -find,-numsol 0 
4.92/5.01	c  -findunique 0 
4.92/5.01	c  -srestart 0 
4.92/5.01	c  -prestart 0.000000 
4.92/5.01	c  -drestart 0 
4.92/5.01	c 
4.92/5.01	c  -alpha 1.300000 
4.92/5.01	c  -rho 0.100000 
4.92/5.01	c  -ps 0.050000 
4.92/5.01	c  -wp 0.010000 
4.92/5.01	c  -sapsthresh -0.100000 
4.92/5.01	c 
4.92/5.01	s SATISFIABLE
4.92/5.01	v  -1 2 3 -4 5 6 7 -8 -9 -10
4.92/5.01	v  11 12 13 -14 15 -16 17 -18 -19 -20
4.92/5.01	v  21 -22 -23 24 25 -26 27 28 29 30
4.92/5.01	v  -31 32 -33 -34 35 36 -37 38 -39 -40
4.92/5.01	v  41 42 43 -44 45 -46 47 48 -49 -50
4.92/5.01	v  51 -52 -53 54 -55 -56 -57 58 -59 -60
4.92/5.01	v  61 62 -63 -64 65 66 67 -68 -69 70
4.92/5.01	v  0
4.92/5.01	c SATZILLA_TIME=5.000000

Verifier Data (download as text)

OK

Watcher Data (download as text)

runsolver version 3.2.0 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node12/watcher-292155-1171750246 -o ROOT/results/node12/solver-292155-1171750246 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/292155-1171750246/SATzilla2007_C /tmp/evaluation/292155-1171750246/instance-292155-1171750246.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.91 1.58 1.20 3/77 9300
/proc/meminfo: memFree=63400/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) R 9298 9300 7711 0 -1 4194304 127 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216547 0 0 4096 0 0 0 0 17 1 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=632 CPUtime=0
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 95 0 0 0 0 0 0 0 18 0 1 0 194979083 647168 89 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134652876 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 159 91 52 118 0 38 0

[startup+0.107481 s]
/proc/loadavg: 1.91 1.58 1.20 3/77 9300
/proc/meminfo: memFree=63400/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) S 9298 9300 7711 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=1816 CPUtime=0.1
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 392 0 0 0 10 0 0 0 20 0 1 0 194979083 1859584 384 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134514087 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 454 384 74 118 0 333 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 3256

[startup+0.515552 s]
/proc/loadavg: 1.91 1.58 1.20 3/77 9300
/proc/meminfo: memFree=63400/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) S 9298 9300 7711 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=1816 CPUtime=0.51
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 392 0 0 0 51 0 0 0 23 0 1 0 194979083 1859584 384 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134514084 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 454 384 74 118 0 333 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 3256

[startup+1.3377 s]
/proc/loadavg: 1.84 1.57 1.20 3/79 9302
/proc/meminfo: memFree=61528/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) S 9298 9300 7711 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=2524 CPUtime=1.33
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 540 0 0 0 133 0 0 0 25 0 1 0 194979083 2584576 532 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134551531 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 631 532 74 118 0 510 0
Current children cumulated CPU time (s) 1.33
Current children cumulated vsize (KiB) 3964

[startup+2.981 s]
/proc/loadavg: 1.84 1.57 1.20 2/79 9302
/proc/meminfo: memFree=61016/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) S 9298 9300 7711 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=2788 CPUtime=2.97
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 628 0 0 0 297 0 0 0 25 0 1 0 194979083 2854912 620 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134526917 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 697 620 74 118 0 576 0
Current children cumulated CPU time (s) 2.97
Current children cumulated vsize (KiB) 4228

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

[startup+3.28705 s]
/proc/loadavg: 1.84 1.57 1.20 2/79 9302
/proc/meminfo: memFree=61016/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) S 9298 9300 7711 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=2788 CPUtime=3.28
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 638 0 0 0 328 0 0 0 25 0 1 0 194979083 2854912 630 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134528181 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 697 630 74 118 0 576 0
Current children cumulated CPU time (s) 3.28
Current children cumulated vsize (KiB) 4228

[startup+4.1072 s]
/proc/loadavg: 1.84 1.57 1.20 2/79 9302
/proc/meminfo: memFree=60888/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) S 9298 9300 7711 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=2920 CPUtime=4.1
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 657 0 0 0 410 0 0 0 25 0 1 0 194979083 2990080 649 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134553208 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 730 649 74 118 0 609 0
Current children cumulated CPU time (s) 4.1
Current children cumulated vsize (KiB) 4360

[startup+4.51527 s]
/proc/loadavg: 1.84 1.57 1.20 2/79 9302
/proc/meminfo: memFree=60696/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) S 9298 9300 7711 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=2920 CPUtime=4.51
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 667 0 0 0 451 0 0 0 25 0 1 0 194979083 2990080 659 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134514060 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 730 659 74 118 0 609 0
Current children cumulated CPU time (s) 4.51
Current children cumulated vsize (KiB) 4360

[startup+4.92735 s]
/proc/loadavg: 1.84 1.57 1.20 2/79 9302
/proc/meminfo: memFree=60696/2055920 swapFree=4154884/4192956
[pid=9300] ppid=9298 vsize=1440 CPUtime=0
/proc/9300/stat : 9300 (SATzilla2007_C) S 9298 9300 7711 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 194979083 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/9300/statm: 360 110 95 260 0 84 0
[pid=9301] ppid=9300 vsize=2920 CPUtime=4.92
/proc/9301/stat : 9301 (march_dl) R 9300 9300 7711 0 -1 4194304 671 0 0 0 492 0 0 0 25 0 1 0 194979083 2990080 663 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134527851 0 0 8392704 0 0 0 0 17 1 0 0
/proc/9301/statm: 730 663 74 118 0 609 0
Current children cumulated CPU time (s) 4.92
Current children cumulated vsize (KiB) 4360

Child status: 10
Real time (s): 5.01443
CPU time (s): 5.01124
CPU user time (s): 5.00524
CPU system time (s): 0.005999
CPU usage (%): 99.9363
Max. virtual memory (cumulated for all children) (KiB): 4360

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 5.00524
system time used= 0.005999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1105
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= 17
involuntary context switches= 103

runsolver used 0.008998 second user time and 0.016997 second system time

The end

Launcher Data (download as text)

Begin job on node12 on Sat Feb 17 22:10:46 UTC 2007

IDJOB= 292155
IDBENCH= 19832
IDSOLVER= 135
FILE ID= node12/292155-1171750246

PBS_JOBID= 3839257

Free space on /tmp= 66545 MiB

SOLVER NAME= SATzilla CRAFTED
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/5SAT/v70/unif-k5-r21.3-v70-c1491-S2081149830-10.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/292155-1171750246/SATzilla2007_C /tmp/evaluation/292155-1171750246/instance-292155-1171750246.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node12/watcher-292155-1171750246 -o ROOT/results/node12/solver-292155-1171750246 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/292155-1171750246/SATzilla2007_C /tmp/evaluation/292155-1171750246/instance-292155-1171750246.cnf            

META MD5SUM SOLVER= a1f00d13cbb558b34a83b365ff80fcc3
MD5SUM BENCH=  d0cf7e3234604bad410cc03581b4891e

RANDOM SEED= 464948130

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node12.alineos.net 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005 x86_64 x86_64 x86_64 GNU/Linux

/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		: 3000.285
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		: 3000.285
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:         63872 kB
Buffers:         47052 kB
Cached:        1848548 kB
SwapCached:      18124 kB
Active:         200736 kB
Inactive:      1721040 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:         63872 kB
SwapTotal:     4192956 kB
SwapFree:      4154884 kB
Dirty:            8572 kB
Writeback:           0 kB
Mapped:          29848 kB
Slab:            55924 kB
Committed_AS:   913816 kB
PageTables:       1692 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= 66545 MiB

End job on node12 on Sat Feb 17 22:10:51 UTC 2007