Trace number 329916

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
KCNFS SMP? (MO) 6.96 4.35652

General information on the benchmark

Nameindustrial/IBM_FV_2002_31_1_rule_1/
SAT_dat.k65.cnf
MD5SUM5e5ff9a8f4e99a8a5a1ebc8850b3b06a
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Satisfiable
(Un)Satisfiability was proved
Number of variables96565
Number of clauses432288
Sum of the clauses size1112454
Maximum clause length20
Minimum clause length1
Number of clauses of size 1623
Number of clauses of size 2336666
Number of clauses of size 347487
Number of clauses of size 419400
Number of clauses of size 58424
Number of clauses of size over 519688

Solver Data (download as text)

0.00/0.00	
0.00/0.00	c Computed by /tmp/evaluation/329916-1173152306/kcnfs-smp   V. 1.2
0.00/0.00	c reading file ... done
0.89/0.90	c Input file : '/tmp/evaluation/329916-1173152306/instance-329916-1173152306.cnf'
0.89/0.90	c [#vars: 96565, #clauses: 432288 , (1-18)-CNF]
1.19/1.26	c unit clauses propagate before processing (#clause: 347210)
1.19/1.26	c estimated distribution: 8 tasks
1.49/1.55	c [PID]: 24192 24193 24194 24195 24196 24197 24198

Verifier Data (download as text)

ERROR: Unexpected answer ! (SATISFIABLE/UNSATISFIABLE expected)
Got answer:

Watcher Data (download as text)

runsolver version 3.2.1 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node10/watcher-329916-1173152306 -o ROOT/results/node10/solver-329916-1173152306 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/329916-1173152306/kcnfs-smp /tmp/evaluation/329916-1173152306/instance-329916-1173152306.cnf 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 2400 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 3/77 24190
/proc/meminfo: memFree=1491200/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=180784 CPUtime=0
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 66 0 0 0 0 0 0 0 18 0 1 0 335185714 185122816 51 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134956289 0 0 4096 0 0 0 0 17 1 0 0
/proc/24190/statm: 45196 51 43 160 0 45034 0

[startup+0.016484 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 24190
/proc/meminfo: memFree=1491200/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=180784 CPUtime=0.01
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 66 0 0 0 1 0 0 0 18 0 1 0 335185714 185122816 51 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134841789 0 0 4096 0 0 0 0 17 1 0 0
/proc/24190/statm: 45196 51 43 160 0 45034 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 180784

[startup+0.101496 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 24190
/proc/meminfo: memFree=1491200/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=180784 CPUtime=0.09
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 66 0 0 0 9 0 0 0 18 0 1 0 335185714 185122816 51 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134841789 0 0 4096 0 0 0 0 17 1 0 0
/proc/24190/statm: 45196 51 43 160 0 45034 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 180784

[startup+0.301523 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 24190
/proc/meminfo: memFree=1491200/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=188308 CPUtime=0.29
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 1961 0 0 0 28 1 0 0 19 0 1 0 335185714 192827392 1946 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134820679 0 0 4096 0 0 0 0 17 1 0 0
/proc/24190/statm: 47077 1947 48 160 0 46915 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 188308

[startup+0.701577 s]
/proc/loadavg: 0.92 0.98 0.99 3/77 24190
/proc/meminfo: memFree=1491200/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=209428 CPUtime=0.69
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 7254 0 0 0 66 3 0 0 23 0 1 0 335185714 214454272 7239 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134841789 0 0 4096 0 0 0 0 17 1 0 0
/proc/24190/statm: 52357 7239 48 160 0 52195 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 209428

[startup+1.50168 s]
/proc/loadavg: 0.92 0.98 0.99 2/78 24191
/proc/meminfo: memFree=1416696/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=239124 CPUtime=1.49
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 34600 0 0 0 135 14 0 0 25 0 1 0 335185714 244862976 34394 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720502 0 0 4096 0 0 0 0 17 1 0 0
/proc/24190/statm: 59781 34394 66 160 0 59619 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 239124

[startup+3.10291 s]
/proc/loadavg: 0.92 0.98 0.99 5/81 24194
/proc/meminfo: memFree=1290720/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=239124 CPUtime=2.08
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 54364 0 0 0 178 30 0 0 25 0 1 0 335185714 244862976 34415 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720338 0 0 4096 0 0 0 0 17 0 0 0
/proc/24190/statm: 59781 34415 66 160 0 59619 0
[pid=24192] ppid=24190 vsize=239124 CPUtime=1.02
/proc/24192/stat : 24192 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5250 0 0 0 99 3 0 0 25 0 1 0 335185869 244862976 34433 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720673 0 0 4096 2 0 0 0 17 1 0 0
/proc/24192/statm: 59781 34433 66 160 0 59619 0
[pid=24193] ppid=24190 vsize=239124 CPUtime=0.73
/proc/24193/stat : 24193 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5212 0 0 0 71 2 0 0 25 0 1 0 335185876 244862976 34420 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720673 0 0 4096 0 0 0 0 17 1 0 0
/proc/24193/statm: 59781 34420 66 160 0 59619 0
[pid=24194] ppid=24190 vsize=239124 CPUtime=0.42
/proc/24194/stat : 24194 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5180 0 0 0 40 2 0 0 25 0 1 0 335185914 244862976 34409 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720673 0 0 4096 2 0 0 0 17 1 0 0
/proc/24194/statm: 59781 34409 66 160 0 59619 0
Current children cumulated CPU time (s) 4.25
Current children cumulated vsize (KiB) 956496



Maximum VSize exceeded: sending SIGTERM then SIGKILL

[startup+4.30108 s]
/proc/loadavg: 1.25 1.05 1.02 9/85 24198
/proc/meminfo: memFree=1205504/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=239124 CPUtime=2.32
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 67385 0 0 0 194 38 0 0 25 0 1 0 335185714 244862976 34415 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720302 0 0 4096 0 0 0 0 17 0 0 0
/proc/24190/statm: 59781 34415 66 160 0 59619 0
[pid=24192] ppid=24190 vsize=239124 CPUtime=1.42
/proc/24192/stat : 24192 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5285 0 0 0 139 3 0 0 25 0 1 0 335185869 244862976 34434 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720519 0 0 4096 2 0 0 0 17 1 0 0
/proc/24192/statm: 59781 34434 66 160 0 59619 0
[pid=24193] ppid=24190 vsize=239124 CPUtime=1.14
/proc/24193/stat : 24193 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5266 0 0 0 112 2 0 0 25 0 1 0 335185876 244862976 34434 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720348 0 0 4096 0 0 0 0 17 1 0 0
/proc/24193/statm: 59781 34434 66 160 0 59619 0
[pid=24194] ppid=24190 vsize=239124 CPUtime=0.83
/proc/24194/stat : 24194 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5230 0 0 0 80 3 0 0 25 0 1 0 335185914 244862976 34422 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720519 0 0 4096 2 0 0 0 17 1 0 0
/proc/24194/statm: 59781 34422 66 160 0 59619 0
[pid=24195] ppid=24190 vsize=239124 CPUtime=0.62
/proc/24195/stat : 24195 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5211 0 0 0 59 3 0 0 25 0 1 0 335185936 244862976 34414 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720238 0 0 4096 0 0 0 0 17 1 0 0
/proc/24195/statm: 59781 34414 66 160 0 59619 0
[pid=24196] ppid=24190 vsize=239124 CPUtime=0.39
/proc/24196/stat : 24196 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5155 0 0 0 35 4 0 0 25 0 1 0 335186001 244862976 34426 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720398 0 0 4096 2 0 0 0 17 0 0 0
/proc/24196/statm: 59781 34426 66 160 0 59619 0
[pid=24197] ppid=24190 vsize=239124 CPUtime=0.22
/proc/24197/stat : 24197 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5133 0 0 0 19 3 0 0 25 0 1 0 335186039 244862976 34419 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720673 0 0 4096 0 0 0 0 17 0 0 0
/proc/24197/statm: 59781 34419 66 160 0 59619 0
[pid=24198] ppid=24190 vsize=239124 CPUtime=0.02
/proc/24198/stat : 24198 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 1230 0 0 0 2 0 0 0 25 0 1 0 335186115 244862976 34415 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720338 0 0 4096 2 0 0 0 17 0 0 0
/proc/24198/statm: 59781 34415 66 160 0 59619 0
Current children cumulated CPU time (s) 6.96
Current children cumulated vsize (KiB) 1912992

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

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

[startup+4.30108 s]
/proc/loadavg: 1.25 1.05 1.02 9/85 24198
/proc/meminfo: memFree=1205504/2055920 swapFree=4168812/4192956
[pid=24190] ppid=24188 vsize=239124 CPUtime=2.32
/proc/24190/stat : 24190 (kcnfs-smp) R 24188 24190 23026 0 -1 4194304 67385 0 0 0 194 38 0 0 25 0 1 0 335185714 244862976 34415 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720302 0 0 4096 0 0 0 0 17 0 0 0
/proc/24190/statm: 59781 34415 66 160 0 59619 0
[pid=24192] ppid=24190 vsize=239124 CPUtime=1.42
/proc/24192/stat : 24192 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5285 0 0 0 139 3 0 0 25 0 1 0 335185869 244862976 34434 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720519 0 0 4096 2 0 0 0 17 1 0 0
/proc/24192/statm: 59781 34434 66 160 0 59619 0
[pid=24193] ppid=24190 vsize=239124 CPUtime=1.14
/proc/24193/stat : 24193 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5266 0 0 0 112 2 0 0 25 0 1 0 335185876 244862976 34434 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720348 0 0 4096 0 0 0 0 17 1 0 0
/proc/24193/statm: 59781 34434 66 160 0 59619 0
[pid=24194] ppid=24190 vsize=239124 CPUtime=0.83
/proc/24194/stat : 24194 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5230 0 0 0 80 3 0 0 25 0 1 0 335185914 244862976 34422 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720519 0 0 4096 2 0 0 0 17 1 0 0
/proc/24194/statm: 59781 34422 66 160 0 59619 0
[pid=24195] ppid=24190 vsize=239124 CPUtime=0.62
/proc/24195/stat : 24195 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5211 0 0 0 59 3 0 0 25 0 1 0 335185936 244862976 34414 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720238 0 0 4096 0 0 0 0 17 1 0 0
/proc/24195/statm: 59781 34414 66 160 0 59619 0
[pid=24196] ppid=24190 vsize=239124 CPUtime=0.39
/proc/24196/stat : 24196 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5155 0 0 0 35 4 0 0 25 0 1 0 335186001 244862976 34426 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720398 0 0 4096 2 0 0 0 17 0 0 0
/proc/24196/statm: 59781 34426 66 160 0 59619 0
[pid=24197] ppid=24190 vsize=239124 CPUtime=0.22
/proc/24197/stat : 24197 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 5133 0 0 0 19 3 0 0 25 0 1 0 335186039 244862976 34419 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720673 0 0 4096 0 0 0 0 17 0 0 0
/proc/24197/statm: 59781 34419 66 160 0 59619 0
[pid=24198] ppid=24190 vsize=239124 CPUtime=0.02
/proc/24198/stat : 24198 (kcnfs-smp) R 24190 24190 23026 0 -1 4194368 1230 0 0 0 2 0 0 0 25 0 1 0 335186115 244862976 34415 18446744073709551615 134512640 135172044 4294956704 18446744073709551615 134720338 0 0 4096 2 0 0 0 17 0 0 0
/proc/24198/statm: 59781 34415 66 160 0 59619 0
Current children cumulated CPU time (s) 6.96
Current children cumulated vsize (KiB) 1912992

Child ended because it received signal 15 (SIGTERM)

!!! problem with CPU time !!!
wait4(...,&childrusage) returns 24190 and gives childrusage.ru_utime.tv_sec=1 childrusage.ru_utime.tv_usec=944704 childrusage.ru_stime.tv_sec=0 childrusage.ru_stime.tv_usec=393940
CPU time returned by wait4() is 2.33864
while last known CPU time is 6.96

Solver probably didn't/couldn't wait for its children
Using last known CPU time as value...

Real time (s): 4.35652
CPU time (s): 6.96
CPU user time (s): 6.4
CPU system time (s): 0.56
CPU usage (%): 159.76
Max. virtual memory (cumulated for all children) (KiB): 1912992

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 1.9447
system time used= 0.39394
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 67385
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= 5
involuntary context switches= 58

runsolver used 0.009998 second user time and 0.024996 second system time

The end

Launcher Data (download as text)

Begin job on node10 on Tue Mar  6 03:38:27 UTC 2007

IDJOB= 329916
IDBENCH= 20551
IDSOLVER= 112
FILE ID= node10/329916-1173152306

PBS_JOBID= 4014984

Free space on /tmp= 66492 MiB

SOLVER NAME= KCNFS SMP
BENCH NAME= HOME/pub/bench/SAT07/industrial/IBM_FV_2002_31_1_rule_1/SAT_dat.k65.cnf
COMMAND LINE= /tmp/evaluation/329916-1173152306/kcnfs-smp /tmp/evaluation/329916-1173152306/instance-329916-1173152306.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node10/watcher-329916-1173152306 -o ROOT/results/node10/solver-329916-1173152306 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/329916-1173152306/kcnfs-smp /tmp/evaluation/329916-1173152306/instance-329916-1173152306.cnf            

META MD5SUM SOLVER= 23f87ccf1c743ff5b6146b444e216cd3
MD5SUM BENCH=  5e5ff9a8f4e99a8a5a1ebc8850b3b06a

RANDOM SEED= 907466011

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node10.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		: 3000.232
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		: 3000.232
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:       1491608 kB
Buffers:         47532 kB
Cached:         424596 kB
SwapCached:       2784 kB
Active:         178660 kB
Inactive:       319912 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1491608 kB
SwapTotal:     4192956 kB
SwapFree:      4168812 kB
Dirty:           12992 kB
Writeback:           0 kB
Mapped:          33876 kB
Slab:            51188 kB
Committed_AS:  1618376 kB
PageTables:       1840 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= 66492 MiB

End job on node10 on Tue Mar  6 03:38:33 UTC 2007