Trace number 351900

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 NameAnswerObjective functionCPU timeWall clock time
wildcat-rnp 2007-03-21? (MO) 18.8721 114.835

General information on the benchmark

Namenormalized-PB06/OPT-SMALLINT/mps-v2-20-10/plato.asu.edu/
pub/milp/normalized-mps-v2-20-10-neos19.opb
MD5SUM1ef5c8e94b66b7ed63dffc6923ecd901
Bench CategoryOPT-SMALLINT (optimisation, small integers)
Best result obtained on this benchmarkSAT
Best value of the objective obtained on this benchmark-13
Best CPU time to get the best result obtained on this benchmark1800.75
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -3
Optimality of the best value was proved NO
Number of variables1041679
Total number of constraints127860
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)80
Number of constraints which are nor clauses,nor cardinality constraints127780
Minimum length of a constraint2
Maximum length of a constraint275
Number of terms in the objective function 1611
Biggest coefficient in the objective function 1
Number of bits for the biggest coefficient in the objective function 1
Sum of the numbers in the objective function 1611
Number of bits of the sum of numbers in the objective function 11
Biggest number in a constraint 24576
Number of bits of the biggest number in a constraint 15
Biggest sum of numbers in a constraint 98256
Number of bits of the biggest sum of numbers17
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data (download as text)

0.00/0.00	c 
0.00/0.00	c wildcat-rnp (VERSION 0.8.0-lite-rnp-devel)
0.00/0.00	c Developed by L. Liu  and M. Truszczynski 
0.00/0.00	c Last built on Sun 18 Mar 2007 03:03:40 PM EDT
0.00/0.00	c 
0.00/0.00	c /tmp/evaluation/351900-1176616933/wildcat-rnp /tmp/evaluation/351900-1176616933/instance-351900-1176616933.opb 57654022 
0.00/0.00	c =================================== BEGIN ===================================
0.00/0.00	c 
0.00/0.00	c Random Number Seed: 57654022
0.00/0.00	c Noise: 0.7 (70 : 100) 

Verifier Data (download as text)

ERROR: no interpretation found !

Watcher Data (download as text)

runsolver version 3.2.2 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node47/watcher-351900-1176616933 -o ROOT/results/node47/solver-351900-1176616933 -C 1800 -W 3600 -M 1800 --output-limit 1,15 /tmp/evaluation/351900-1176616933/wildcat-rnp /tmp/evaluation/351900-1176616933/instance-351900-1176616933.opb 57654022 

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): 3600 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: 0.92 0.98 0.99 3/64 19409
/proc/meminfo: memFree=1678064/2055920 swapFree=4192956/4192956
[pid=19409] ppid=19407 vsize=11060 CPUtime=0
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 410 0 0 0 0 0 0 0 18 0 1 0 16538744 11325440 394 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 134602311 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 2765 397 100 226 0 2536 0

[startup+0.042743 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19409
/proc/meminfo: memFree=1678064/2055920 swapFree=4192956/4192956
[pid=19409] ppid=19407 vsize=13744 CPUtime=0.03
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 1717 0 0 0 3 0 0 0 18 0 1 0 16538744 14073856 1701 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 134770594 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 3436 1704 110 226 0 3207 0
Current children cumulated CPU time (s) 0.03
Current children cumulated vsize (KiB) 13744

[startup+0.101749 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19409
/proc/meminfo: memFree=1678064/2055920 swapFree=4192956/4192956
[pid=19409] ppid=19407 vsize=33728 CPUtime=0.09
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 6549 0 0 0 7 2 0 0 18 0 1 0 16538744 34537472 6533 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 134770594 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 8432 6536 110 226 0 8203 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 33728

[startup+0.30177 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19409
/proc/meminfo: memFree=1678064/2055920 swapFree=4192956/4192956
[pid=19409] ppid=19407 vsize=100840 CPUtime=0.29
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 23017 0 0 0 20 9 0 0 20 0 1 0 16538744 103260160 23001 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135002146 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 25210 23005 110 226 0 24981 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 100840

[startup+0.701815 s]
/proc/loadavg: 0.92 0.98 0.99 3/64 19409
/proc/meminfo: memFree=1678064/2055920 swapFree=4192956/4192956
[pid=19409] ppid=19407 vsize=233412 CPUtime=0.69
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 55870 0 0 0 47 22 0 0 23 0 1 0 16538744 239013888 55854 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 134770594 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 58353 55858 111 226 0 58124 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 233412

[startup+1.5019 s]
/proc/loadavg: 0.92 0.98 0.99 2/65 19410
/proc/meminfo: memFree=1355560/2055920 swapFree=4192956/4192956
[pid=19409] ppid=19407 vsize=498492 CPUtime=1.49
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 121079 0 0 0 101 48 0 0 25 0 1 0 16538744 510455808 121063 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135002146 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 124623 121067 110 226 0 124394 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 498492

[startup+3.10107 s]
/proc/loadavg: 1.01 1.00 1.00 2/65 19410
/proc/meminfo: memFree=996392/2055920 swapFree=4192956/4192956
[pid=19409] ppid=19407 vsize=1023716 CPUtime=3.09
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 252582 0 0 0 207 102 0 0 25 0 1 0 16538744 1048285184 252533 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 134770594 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 255929 252536 110 226 0 255700 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 1023716

[startup+6.30143 s]
/proc/loadavg: 1.01 1.00 1.00 3/65 19410
/proc/meminfo: memFree=15272/2055920 swapFree=4184604/4192956
[pid=19409] ppid=19407 vsize=1842288 CPUtime=6.26
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 453890 0 0 0 433 193 0 0 25 0 1 0 16538744 1886502912 453776 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135002146 0 0 4096 16386 0 0 0 17 0 0 0
/proc/19409/statm: 460572 453776 110 226 0 460343 0
Current children cumulated CPU time (s) 6.26
Current children cumulated vsize (KiB) 1842288



Maximum VSize exceeded: sending SIGTERM then SIGKILL

[startup+6.40144 s]
/proc/loadavg: 1.09 1.02 1.01 4/65 19410
/proc/meminfo: memFree=16360/2055920 swapFree=4184604/4192956
[pid=19409] ppid=19407 vsize=1844268 CPUtime=6.36
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4194304 455373 0 0 0 443 193 0 0 25 0 1 0 16538744 1888530432 455259 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135014985 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 461067 455259 110 226 0 460838 0
Current children cumulated CPU time (s) 6.36
Current children cumulated vsize (KiB) 1844268

Sending SIGTERM to process tree (bottom up)
Sleeping 2 seconds

Sending SIGKILL to process tree (bottom up)

[startup+12.7013 s]
/proc/loadavg: 1.16 1.03 1.01 1/66 19412
/proc/meminfo: memFree=16424/2055920 swapFree=4093480/4192956
[pid=19409] ppid=19407 vsize=1860208 CPUtime=8.63
/proc/19409/stat : 19409 (wildcat-rnp) D 19407 19409 18230 0 -1 4195840 463535 0 0 0 559 304 0 0 18 0 1 0 16538744 1904852992 442477 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135106337 0 0 4096 16386 18446744071563608069 0 0 17 0 0 0
/proc/19409/statm: 465052 442477 73 226 0 464823 0
Current children cumulated CPU time (s) 8.63
Current children cumulated vsize (KiB) 1860208

[startup+25.5017 s]
/proc/loadavg: 1.66 1.15 1.05 1/67 19413
/proc/meminfo: memFree=16480/2055920 swapFree=3767168/4192956
[pid=19409] ppid=19407 vsize=1860208 CPUtime=9.87
/proc/19409/stat : 19409 (wildcat-rnp) D 19407 19409 18230 0 -1 4195840 463535 0 0 0 559 428 0 0 18 0 1 0 16538744 1904852992 360947 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135106337 0 0 4096 16386 18446744071564464661 0 0 17 0 0 0
/proc/19409/statm: 465052 360947 73 226 0 464823 0
Current children cumulated CPU time (s) 9.87
Current children cumulated vsize (KiB) 1860208

[startup+51.1055 s]
/proc/loadavg: 2.21 1.32 1.11 1/65 19414
/proc/meminfo: memFree=16240/2055920 swapFree=3466216/4192956
[pid=19409] ppid=19407 vsize=1860208 CPUtime=12.82
/proc/19409/stat : 19409 (wildcat-rnp) D 19407 19409 18230 0 -1 4195840 463587 0 0 0 559 723 0 0 18 0 1 0 16538744 1904852992 285709 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135106337 0 0 4096 16386 18446744071563608240 0 0 17 1 0 0
/proc/19409/statm: 465052 285709 73 226 0 464823 0
Current children cumulated CPU time (s) 12.82
Current children cumulated vsize (KiB) 1860208

[startup+102.302 s]
/proc/loadavg: 2.33 1.50 1.18 1/65 19414
/proc/meminfo: memFree=16752/2055920 swapFree=3466216/4192956
[pid=19409] ppid=19407 vsize=1860208 CPUtime=17.62
/proc/19409/stat : 19409 (wildcat-rnp) D 19407 19409 18230 0 -1 4195840 596633 0 18444 0 559 1203 0 0 18 0 1 0 16538744 1904852992 437176 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135106337 0 0 4096 16386 18446744071563479169 0 0 17 0 0 0
/proc/19409/statm: 465052 437176 73 226 0 464823 0
Current children cumulated CPU time (s) 17.62
Current children cumulated vsize (KiB) 1860208

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

[startup+103.802 s]
/proc/loadavg: 2.33 1.50 1.18 1/65 19414
/proc/meminfo: memFree=18864/2055920 swapFree=3466216/4192956
[pid=19409] ppid=19407 vsize=1860208 CPUtime=17.62
/proc/19409/stat : 19409 (wildcat-rnp) D 19407 19409 18230 0 -1 4195840 596633 0 18444 0 559 1203 0 0 18 0 1 0 16538744 1904852992 437176 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135106337 0 0 4096 16386 18446744071563479169 0 0 17 0 0 0
/proc/19409/statm: 465052 437176 73 226 0 464823 0
Current children cumulated CPU time (s) 17.62
Current children cumulated vsize (KiB) 1860208

[startup+110.202 s]
/proc/loadavg: 2.30 1.51 1.18 1/65 19414
/proc/meminfo: memFree=15920/2055920 swapFree=3466216/4192956
[pid=19409] ppid=19407 vsize=1860208 CPUtime=18.4
/proc/19409/stat : 19409 (wildcat-rnp) D 19407 19409 18230 0 -1 4195840 618701 0 21599 0 559 1281 0 0 18 0 1 0 16538744 1904852992 462397 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135106337 0 0 4096 16386 18446744071563479169 0 0 17 1 0 0
/proc/19409/statm: 465052 462397 73 226 0 464823 0
Current children cumulated CPU time (s) 18.4
Current children cumulated vsize (KiB) 1860208

[startup+113.402 s]
/proc/loadavg: 2.19 1.50 1.18 1/65 19414
/proc/meminfo: memFree=16496/2055920 swapFree=3466216/4192956
[pid=19409] ppid=19407 vsize=1860208 CPUtime=18.42
/proc/19409/stat : 19409 (wildcat-rnp) D 19407 19409 18230 0 -1 4195840 619139 0 21684 0 559 1283 0 0 18 0 1 0 16538744 1904852992 462901 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135106337 0 0 4096 16386 18446744071563479169 0 0 17 0 0 0
/proc/19409/statm: 465052 462901 73 226 0 464823 0
Current children cumulated CPU time (s) 18.42
Current children cumulated vsize (KiB) 1860208

[startup+114.201 s]
/proc/loadavg: 2.19 1.50 1.18 1/65 19414
/proc/meminfo: memFree=16368/2055920 swapFree=3466216/4192956
[pid=19409] ppid=19407 vsize=1860208 CPUtime=18.42
/proc/19409/stat : 19409 (wildcat-rnp) D 19407 19409 18230 0 -1 4195840 619139 0 21730 0 559 1283 0 0 18 0 1 0 16538744 1904852992 462947 18446744073709551615 134512640 135438881 4294956656 18446744073709551615 135106337 0 0 4096 16386 18446744071563479169 0 0 17 0 0 0
/proc/19409/statm: 465052 462947 73 226 0 464823 0
Current children cumulated CPU time (s) 18.42
Current children cumulated vsize (KiB) 1860208

[startup+114.603 s]
/proc/loadavg: 2.19 1.50 1.18 1/65 19414
/proc/meminfo: memFree=16368/2055920 swapFree=3466216/4192956
[pid=19409] ppid=19407 vsize=0 CPUtime=18.63
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4195844 620164 0 21822 0 559 1304 0 0 18 0 1 0 16538744 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 16386 0 0 0 17 0 0 0
/proc/19409/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 18.63
Current children cumulated vsize (KiB) 0

[startup+114.803 s]
/proc/loadavg: 2.19 1.50 1.18 2/65 19414
/proc/meminfo: memFree=1798512/2055920 swapFree=4110548/4192956
[pid=19409] ppid=19407 vsize=0 CPUtime=18.83
/proc/19409/stat : 19409 (wildcat-rnp) R 19407 19409 18230 0 -1 4195844 620164 0 21822 0 559 1324 0 0 20 0 1 0 16538744 0 0 18446744073709551615 0 0 0 0 0 0 0 4096 16386 0 0 0 17 1 0 0
/proc/19409/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 18.83
Current children cumulated vsize (KiB) 0

Child ended because it received signal 6 (SIGABRT)
Real time (s): 114.835
CPU time (s): 18.8721
CPU user time (s): 5.59615
CPU system time (s): 13.276
CPU usage (%): 16.4341
Max. virtual memory (cumulated for all children) (KiB): 1860208

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 5.59615
system time used= 13.276
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 620164
page faults= 21822
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 22119
involuntary context switches= 620

runsolver used 0.115982 second user time and 0.342947 second system time

The end

Launcher Data (download as text)

Begin job on node47 on Sun Apr 15 06:02:14 UTC 2007

IDJOB= 351900
IDBENCH= 1845
IDSOLVER= 161
FILE ID= node47/351900-1176616933

PBS_JOBID= 4557029

Free space on /tmp= 66527 MiB

SOLVER NAME= wildcat-rnp 2007-03-21
BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-SMALLINT/mps-v2-20-10/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos19.opb
COMMAND LINE= /tmp/evaluation/351900-1176616933/wildcat-rnp /tmp/evaluation/351900-1176616933/instance-351900-1176616933.opb 57654022
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node47/watcher-351900-1176616933 -o ROOT/results/node47/solver-351900-1176616933 -C 1800 -W 3600 -M 1800 --output-limit 1,15  /tmp/evaluation/351900-1176616933/wildcat-rnp /tmp/evaluation/351900-1176616933/instance-351900-1176616933.opb 57654022

META MD5SUM SOLVER= 05d21ee76b90579709a9929b8e99937a
MD5SUM BENCH=  1ef5c8e94b66b7ed63dffc6923ecd901

RANDOM SEED= 57654022

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB

Linux node47.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		: 3000.221
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		: 3000.221
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:       1678472 kB
Buffers:         56164 kB
Cached:         210736 kB
SwapCached:          0 kB
Active:         131544 kB
Inactive:       160252 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1678472 kB
SwapTotal:     4192956 kB
SwapFree:      4192956 kB
Dirty:           38072 kB
Writeback:           0 kB
Mapped:          26844 kB
Slab:            71640 kB
Committed_AS:  2076200 kB
PageTables:       1456 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= 64716 MiB

End job on node47 on Sun Apr 15 06:04:10 UTC 2007