Trace number 293877

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 5.16621 5.17221

General information on the benchmark

Namerandom/OnTreshold/5SAT/v110/
unif-k5-r21.3-v110-c2343-S1019153514-04.SAT.shuffled.cnf
MD5SUM45b9d25ea20b930c4376024c10f0fe19
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.406938
Satisfiable
(Un)Satisfiability was proved
Number of variables110
Number of clauses2343
Sum of the clauses size11715
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 52343
Number of clauses of size over 50

Solver Data (download as text)

4.99/5.17	c run March_dl for 5 seconds ... 
4.99/5.17	c Bin: Executing march_dl
4.99/5.17	c child exit by a signal
4.99/5.17	c march_dl returned code 137.
4.99/5.17	c run saps (UBCSAT implementation) for 2 seconds ... 
4.99/5.17	c Bin: Executing ubcsat2006
4.99/5.17	c child exited successfully
4.99/5.17	c ubcsat2006 returned code 10.
4.99/5.17	# 
4.99/5.17	# UBCSAT version 1.1.0pp
4.99/5.17	# 
4.99/5.17	# http://www.satlib.org/ubcsat
4.99/5.17	# 
4.99/5.17	# ubcsat -h for help
4.99/5.17	# 
4.99/5.17	#  -alg saps
4.99/5.17	#  -runs 1 
4.99/5.17	#  -cutoff 4294967295 
4.99/5.17	#  -timeout 2.000000 
4.99/5.17	#  -gtimeout 0.000000 
4.99/5.17	#  -noimprove 0 
4.99/5.17	#  -target 0 
4.99/5.17	#  -wtarget 0.000000 
4.99/5.17	#  -seed 1171778834 
4.99/5.17	#  -solve 0 
4.99/5.17	#  -find,-numsol 0 
4.99/5.17	#  -findunique 0 
4.99/5.17	#  -srestart 0 
4.99/5.17	#  -prestart 0.000000 
4.99/5.17	#  -drestart 0 
4.99/5.17	# 
4.99/5.17	#  -alpha 1.300000 
4.99/5.17	#  -rho 0.100000 
4.99/5.17	#  -ps 0.050000 
4.99/5.17	#  -wp 0.010000 
4.99/5.17	#  -sapsthresh -0.100000 
4.99/5.17	# 
4.99/5.17	# UBCSAT default output: 
4.99/5.17	#    'ubcsat -r out null' to suppress, 'ubcsat -hc' for customization help
4.99/5.17	# 
4.99/5.17	# 
4.99/5.17	# Output Columns: |run|found|best|beststep|steps|
4.99/5.17	# 
4.99/5.17	# run: Run Number
4.99/5.17	# found: Target Solution Quality Found? (1 => yes)
4.99/5.17	# best: Best (Lowest) # of False Clauses Found
4.99/5.17	# beststep: Step of Best (Lowest) # of False Clauses Found
4.99/5.17	# steps: Total Number of Search Steps
4.99/5.17	# 
4.99/5.17	#       F  Best       Step      Total 
4.99/5.17	#   Run N Sol'n         of     Search 
4.99/5.17	#   No. D Found       Best      Steps 
4.99/5.17	# 
4.99/5.17	      1 1     0      36174      36174 
4.99/5.17	
4.99/5.17	
4.99/5.17	Variables = 110
4.99/5.17	Clauses = 2343
4.99/5.17	TotalLiterals = 11715
4.99/5.17	TotalCPUTimeElapsed = 0.150     
4.99/5.17	FlipsPerSecond = 241160 
4.99/5.17	RunsExecuted = 1
4.99/5.17	SuccessfulRuns = 1
4.99/5.17	PercentSuccess = 100.00
4.99/5.17	Steps_Mean = 36174
4.99/5.17	Steps_CoeffVariance = 0
4.99/5.17	Steps_Median = 36174
4.99/5.17	CPUTime_Mean = 0.15
4.99/5.17	CPUTime_CoeffVariance = 0
4.99/5.17	CPUTime_Median = 0.15
4.99/5.17	
4.99/5.17	
4.99/5.17	c 
4.99/5.17	c UBCSAT version 1.1.0pp
4.99/5.17	c 
4.99/5.17	c http://www.satlib.org/ubcsat
4.99/5.17	c 
4.99/5.17	c ubcsat -h for help
4.99/5.17	c 
4.99/5.17	c  -runs 1 
4.99/5.17	c  -cutoff 4294967295 
4.99/5.17	c  -timeout 2.000000 
4.99/5.17	c  -gtimeout 0.000000 
4.99/5.17	c  -noimprove 0 
4.99/5.17	c  -target 0 
4.99/5.17	c  -wtarget 0.000000 
4.99/5.17	c  -seed 1171778834 
4.99/5.17	c  -solve 0 
4.99/5.17	c  -find,-numsol 0 
4.99/5.17	c  -findunique 0 
4.99/5.17	c  -srestart 0 
4.99/5.17	c  -prestart 0.000000 
4.99/5.17	c  -drestart 0 
4.99/5.17	c 
4.99/5.17	c  -alpha 1.300000 
4.99/5.17	c  -rho 0.100000 
4.99/5.17	c  -ps 0.050000 
4.99/5.17	c  -wp 0.010000 
4.99/5.17	c  -sapsthresh -0.100000 
4.99/5.17	c 
4.99/5.17	s SATISFIABLE
4.99/5.17	v  -1 2 3 -4 -5 6 -7 -8 9 10
4.99/5.17	v  -11 -12 -13 14 15 -16 17 -18 -19 -20
4.99/5.17	v  21 -22 -23 -24 25 -26 27 28 -29 30
4.99/5.17	v  31 32 33 34 -35 36 -37 38 39 -40
4.99/5.17	v  41 42 43 44 45 -46 47 -48 -49 50
4.99/5.17	v  51 52 53 54 55 -56 57 -58 -59 -60
4.99/5.17	v  61 62 -63 -64 -65 -66 -67 68 -69 -70
4.99/5.17	v  71 72 73 -74 -75 -76 77 -78 -79 -80
4.99/5.17	v  81 82 -83 -84 -85 -86 87 -88 -89 90
4.99/5.17	v  91 -92 -93 94 95 -96 -97 98 99 100
4.99/5.17	v  -101 102 103 104 105 106 -107 -108 109 -110
4.99/5.17	v  0
4.99/5.17	c SATZILLA_TIME=5.160000

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/node3/watcher-293877-1171778834 -o ROOT/results/node3/solver-293877-1171778834 -C 1200 -M 1800 --output-limit 1,15 /tmp/evaluation/293877-1171778834/SATzilla2007_C /tmp/evaluation/293877-1171778834/instance-293877-1171778834.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: 0.92 0.98 0.99 2/77 21382
/proc/meminfo: memFree=786344/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=0
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 197838280 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21382/statm: 360 110 95 260 0 84 0
[pid=21383] ppid=21382 vsize=636 CPUtime=0
/proc/21383/stat : 21383 (march_dl) R 21382 21382 20288 0 -1 4194304 80 0 0 0 0 0 0 0 20 0 1 0 197838280 651264 75 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134652876 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21383/statm: 159 75 50 118 0 38 0

[startup+0.107071 s]
/proc/loadavg: 0.92 0.98 0.99 2/77 21382
/proc/meminfo: memFree=786344/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=0
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 197838280 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21382/statm: 360 110 95 260 0 84 0
[pid=21383] ppid=21382 vsize=2660 CPUtime=0.1
/proc/21383/stat : 21383 (march_dl) R 21382 21382 20288 0 -1 4194304 585 0 0 0 10 0 0 0 20 0 1 0 197838280 2723840 577 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134541091 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21383/statm: 665 577 72 118 0 544 0
Current children cumulated CPU time (s) 0.1
Current children cumulated vsize (KiB) 4100

[startup+0.515104 s]
/proc/loadavg: 0.92 0.98 0.99 2/77 21382
/proc/meminfo: memFree=786344/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=0
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 197838280 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21382/statm: 360 110 95 260 0 84 0
[pid=21383] ppid=21382 vsize=2900 CPUtime=0.51
/proc/21383/stat : 21383 (march_dl) R 21382 21382 20288 0 -1 4194304 629 0 0 0 51 0 0 0 23 0 1 0 197838280 2969600 621 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134514015 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21383/statm: 725 621 74 118 0 604 0
Current children cumulated CPU time (s) 0.51
Current children cumulated vsize (KiB) 4340

[startup+1.33517 s]
/proc/loadavg: 0.92 0.98 0.99 2/79 21384
/proc/meminfo: memFree=783960/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=0
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 197838280 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21382/statm: 360 110 95 260 0 84 0
[pid=21383] ppid=21382 vsize=3228 CPUtime=1.32
/proc/21383/stat : 21383 (march_dl) R 21382 21382 20288 0 -1 4194304 703 0 0 0 132 0 0 0 25 0 1 0 197838280 3305472 695 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134537011 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21383/statm: 807 695 74 118 0 686 0
Current children cumulated CPU time (s) 1.32
Current children cumulated vsize (KiB) 4668

[startup+2.97131 s]
/proc/loadavg: 0.92 0.98 0.99 2/79 21384
/proc/meminfo: memFree=782616/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=0
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 197838280 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21382/statm: 360 110 95 260 0 84 0
[pid=21383] ppid=21382 vsize=4284 CPUtime=2.96
/proc/21383/stat : 21383 (march_dl) R 21382 21382 20288 0 -1 4194304 980 0 0 0 296 0 0 0 25 0 1 0 197838280 4386816 972 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134514071 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21383/statm: 1071 972 74 118 0 950 0
Current children cumulated CPU time (s) 2.96
Current children cumulated vsize (KiB) 5724

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

[startup+3.27733 s]
/proc/loadavg: 0.92 0.98 0.99 2/79 21384
/proc/meminfo: memFree=782616/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=0
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 197838280 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21382/statm: 360 110 95 260 0 84 0
[pid=21383] ppid=21382 vsize=4416 CPUtime=3.26
/proc/21383/stat : 21383 (march_dl) R 21382 21382 20288 0 -1 4194304 1000 0 0 0 326 0 0 0 25 0 1 0 197838280 4521984 992 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134526932 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21383/statm: 1104 992 74 118 0 983 0
Current children cumulated CPU time (s) 3.26
Current children cumulated vsize (KiB) 5856

[startup+4.0974 s]
/proc/loadavg: 0.93 0.98 0.99 2/79 21384
/proc/meminfo: memFree=782360/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=0
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 197838280 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21382/statm: 360 110 95 260 0 84 0
[pid=21383] ppid=21382 vsize=4548 CPUtime=4.08
/proc/21383/stat : 21383 (march_dl) R 21382 21382 20288 0 -1 4194304 1038 0 0 0 408 0 0 0 25 0 1 0 197838280 4657152 1030 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134526923 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21383/statm: 1137 1030 74 118 0 1016 0
Current children cumulated CPU time (s) 4.08
Current children cumulated vsize (KiB) 5988

[startup+4.91846 s]
/proc/loadavg: 0.93 0.98 0.99 2/79 21384
/proc/meminfo: memFree=781912/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=0
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 197838280 1474560 110 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21382/statm: 360 110 95 260 0 84 0
[pid=21383] ppid=21382 vsize=4680 CPUtime=4.9
/proc/21383/stat : 21383 (march_dl) R 21382 21382 20288 0 -1 4194304 1073 0 0 0 490 0 0 0 25 0 1 0 197838280 4792320 1065 18446744073709551615 134512640 134996440 4294956640 18446744073709551615 134526962 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21383/statm: 1170 1065 74 118 0 1049 0
Current children cumulated CPU time (s) 4.9
Current children cumulated vsize (KiB) 6120

[startup+5.12248 s]
/proc/loadavg: 0.93 0.98 0.99 2/79 21384
/proc/meminfo: memFree=781912/2055920 swapFree=4192812/4192956
[pid=21382] ppid=21380 vsize=1440 CPUtime=4.99
/proc/21382/stat : 21382 (SATzilla2007_C) S 21380 21382 20288 0 -1 4194304 135 1078 0 0 0 0 499 0 16 0 1 0 197838280 1474560 111 18446744073709551615 134512640 135579813 4294956608 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/21382/statm: 360 111 96 260 0 84 0
Current children cumulated CPU time (s) 4.99
Current children cumulated vsize (KiB) 1440

Child status: 10
Real time (s): 5.17221
CPU time (s): 5.16621
CPU user time (s): 5.14122
CPU system time (s): 0.024996
CPU usage (%): 99.884
Max. virtual memory (cumulated for all children) (KiB): 6120

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 5.14122
system time used= 0.024996
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1523
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= 13

runsolver used 0.003999 second user time and 0.021996 second system time

The end

Launcher Data (download as text)

Begin job on node3 on Sun Feb 18 06:07:14 UTC 2007

IDJOB= 293877
IDBENCH= 19874
IDSOLVER= 135
FILE ID= node3/293877-1171778834

PBS_JOBID= 3839295

Free space on /tmp= 66545 MiB

SOLVER NAME= SATzilla CRAFTED
BENCH NAME= HOME/pub/bench/SAT07/random/OnTreshold/5SAT/v110/unif-k5-r21.3-v110-c2343-S1019153514-04.SAT.shuffled.cnf
COMMAND LINE= /tmp/evaluation/293877-1171778834/SATzilla2007_C /tmp/evaluation/293877-1171778834/instance-293877-1171778834.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node3/watcher-293877-1171778834 -o ROOT/results/node3/solver-293877-1171778834 -C 1200 -M 1800 --output-limit 1,15  /tmp/evaluation/293877-1171778834/SATzilla2007_C /tmp/evaluation/293877-1171778834/instance-293877-1171778834.cnf            

META MD5SUM SOLVER= a1f00d13cbb558b34a83b365ff80fcc3
MD5SUM BENCH=  45b9d25ea20b930c4376024c10f0fe19

RANDOM SEED= 910759512

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node3.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		: 3000.241
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		: 3000.241
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:        786752 kB
Buffers:         57576 kB
Cached:        1079452 kB
SwapCached:          0 kB
Active:         544728 kB
Inactive:       646828 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:        786752 kB
SwapTotal:     4192956 kB
SwapFree:      4192812 kB
Dirty:            8420 kB
Writeback:           0 kB
Mapped:          73444 kB
Slab:            63268 kB
Committed_AS:   933812 kB
PageTables:       1656 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 node3 on Sun Feb 18 06:07:20 UTC 2007