Trace number 332940

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
picosat 535UNSAT 321.864 321.963

General information on the benchmark

Namecrafted/Medium/contest05/others/
gensys-ukn002.sat05-2744.reshuffled-07.cnf
MD5SUMa2019e53d39465096d989c5106a4e0ef
Bench CategoryCRAFTED (crafted instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark99.1819
Satisfiable
(Un)Satisfiability was proved
Number of variables1697
Number of clauses8961
Sum of the clauses size79749
Maximum clause length16
Minimum clause length1
Number of clauses of size 127
Number of clauses of size 2259
Number of clauses of size 31190
Number of clauses of size 4136
Number of clauses of size 5906
Number of clauses of size over 56443

Solver Data (download as text)

321.80/321.96	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node17/watcher-332940-1173497059 -o ROOT/results/node17/solver-332940-1173497059 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/332940-1173497059/picosat /tmp/evaluation/332940-1173497059/instance-332940-1173497059.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 1.06 1.92 3/77 20636
/proc/meminfo: memFree=1387016/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=884 CPUtime=0
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 124 0 0 0 0 0 0 0 18 0 1 0 369660191 905216 109 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 221 109 40 102 0 116 0

[startup+0.0153741 s]
/proc/loadavg: 0.92 1.06 1.92 3/77 20636
/proc/meminfo: memFree=1387016/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=884 CPUtime=0
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 125 0 0 0 0 0 0 0 18 0 1 0 369660191 905216 110 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 221 110 40 102 0 116 0
Current children cumulated CPU time (s) 0
Current children cumulated vsize (KiB) 884

[startup+0.101381 s]
/proc/loadavg: 0.92 1.06 1.92 3/77 20636
/proc/meminfo: memFree=1387016/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=1016 CPUtime=0.09
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 173 0 0 0 4 5 0 0 18 0 1 0 369660191 1040384 158 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134605937 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 254 158 40 102 0 149 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 1016

[startup+0.301402 s]
/proc/loadavg: 0.92 1.06 1.92 3/77 20636
/proc/meminfo: memFree=1387016/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=1552 CPUtime=0.29
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 315 0 0 0 18 11 0 0 19 0 1 0 369660191 1589248 298 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134544922 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 388 298 48 102 0 283 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 1552

[startup+0.701444 s]
/proc/loadavg: 0.92 1.06 1.92 3/77 20636
/proc/meminfo: memFree=1387016/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=1684 CPUtime=0.69
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 335 0 0 0 58 11 0 0 23 0 1 0 369660191 1724416 318 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134583827 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 421 318 48 102 0 316 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 1684

[startup+1.50253 s]
/proc/loadavg: 0.92 1.06 1.92 2/78 20637
/proc/meminfo: memFree=1385856/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=1804 CPUtime=1.49
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 377 0 0 0 138 11 0 0 25 0 1 0 369660191 1847296 360 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134549427 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 451 360 48 102 0 346 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 1804

[startup+3.10169 s]
/proc/loadavg: 0.92 1.06 1.92 2/78 20637
/proc/meminfo: memFree=1385600/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=2040 CPUtime=3.09
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 433 0 0 0 298 11 0 0 25 0 1 0 369660191 2088960 416 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134522880 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 510 416 48 102 0 405 0
Current children cumulated CPU time (s) 3.09
Current children cumulated vsize (KiB) 2040

[startup+6.30102 s]
/proc/loadavg: 0.93 1.06 1.91 2/78 20637
/proc/meminfo: memFree=1385152/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=2264 CPUtime=6.29
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 485 0 0 0 618 11 0 0 25 0 1 0 369660191 2318336 468 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134529919 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 566 468 48 102 0 461 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 2264

[startup+12.7017 s]
/proc/loadavg: 0.93 1.06 1.91 2/78 20637
/proc/meminfo: memFree=1384704/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=2676 CPUtime=12.69
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 560 0 0 0 1258 11 0 0 25 0 1 0 369660191 2740224 543 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525791 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 669 543 48 102 0 564 0
Current children cumulated CPU time (s) 12.69
Current children cumulated vsize (KiB) 2676

[startup+25.502 s]
/proc/loadavg: 0.95 1.05 1.89 2/78 20637
/proc/meminfo: memFree=1384320/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=3264 CPUtime=25.48
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 722 0 0 0 2537 11 0 0 25 0 1 0 369660191 3342336 705 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134531145 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 816 705 48 102 0 711 0
Current children cumulated CPU time (s) 25.48
Current children cumulated vsize (KiB) 3264

[startup+51.1017 s]
/proc/loadavg: 0.96 1.05 1.87 2/78 20637
/proc/meminfo: memFree=1383552/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=3732 CPUtime=51.08
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 856 0 0 0 5096 12 0 0 25 0 1 0 369660191 3821568 839 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 933 839 48 102 0 828 0
Current children cumulated CPU time (s) 51.08
Current children cumulated vsize (KiB) 3732

[startup+102.306 s]
/proc/loadavg: 0.98 1.04 1.82 2/78 20637
/proc/meminfo: memFree=1382784/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=4176 CPUtime=102.27
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1094 0 0 0 10214 13 0 0 25 0 1 0 369660191 4276224 967 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134530174 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1044 967 48 102 0 939 0
Current children cumulated CPU time (s) 102.27
Current children cumulated vsize (KiB) 4176

[startup+162.301 s]
/proc/loadavg: 0.99 1.03 1.77 2/78 20637
/proc/meminfo: memFree=1382208/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=4952 CPUtime=162.24
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1289 0 0 0 16211 13 0 0 25 0 1 0 369660191 5070848 1162 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134529882 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1238 1162 48 102 0 1133 0
Current children cumulated CPU time (s) 162.24
Current children cumulated vsize (KiB) 4952

[startup+222.301 s]
/proc/loadavg: 0.99 1.02 1.72 2/78 20637
/proc/meminfo: memFree=1381952/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5200 CPUtime=222.23
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1347 0 0 0 22209 14 0 0 25 0 1 0 369660191 5324800 1220 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134529719 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1300 1220 48 102 0 1195 0
Current children cumulated CPU time (s) 222.23
Current children cumulated vsize (KiB) 5200

[startup+282.302 s]
/proc/loadavg: 0.99 1.02 1.67 2/78 20637
/proc/meminfo: memFree=1381888/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5324 CPUtime=282.2
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1348 0 0 0 28206 14 0 0 25 0 1 0 369660191 5451776 1221 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1331 1221 48 102 0 1226 0
Current children cumulated CPU time (s) 282.2
Current children cumulated vsize (KiB) 5324

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

[startup+307.101 s]
/proc/loadavg: 0.99 1.01 1.65 2/78 20637
/proc/meminfo: memFree=1381824/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5324 CPUtime=306.99
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1348 0 0 0 30685 14 0 0 25 0 1 0 369660191 5451776 1221 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134529993 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1331 1221 48 102 0 1226 0
Current children cumulated CPU time (s) 306.99
Current children cumulated vsize (KiB) 5324

[startup+313.506 s]
/proc/loadavg: 0.99 1.01 1.64 2/78 20637
/proc/meminfo: memFree=1381824/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5324 CPUtime=313.4
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1348 0 0 0 31326 14 0 0 25 0 1 0 369660191 5451776 1221 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134597664 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1331 1221 48 102 0 1226 0
Current children cumulated CPU time (s) 313.4
Current children cumulated vsize (KiB) 5324

[startup+316.701 s]
/proc/loadavg: 0.99 1.01 1.64 2/78 20637
/proc/meminfo: memFree=1381824/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5324 CPUtime=316.6
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1348 0 0 0 31645 15 0 0 25 0 1 0 369660191 5451776 1221 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525785 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1331 1221 48 102 0 1226 0
Current children cumulated CPU time (s) 316.6
Current children cumulated vsize (KiB) 5324

[startup+319.902 s]
/proc/loadavg: 0.99 1.01 1.64 2/78 20637
/proc/meminfo: memFree=1381824/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5324 CPUtime=319.8
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1348 0 0 0 31965 15 0 0 25 0 1 0 369660191 5451776 1221 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1331 1221 48 102 0 1226 0
Current children cumulated CPU time (s) 319.8
Current children cumulated vsize (KiB) 5324

[startup+320.702 s]
/proc/loadavg: 0.99 1.01 1.64 2/78 20637
/proc/meminfo: memFree=1381824/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5324 CPUtime=320.6
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1348 0 0 0 32045 15 0 0 25 0 1 0 369660191 5451776 1221 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525788 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1331 1221 48 102 0 1226 0
Current children cumulated CPU time (s) 320.6
Current children cumulated vsize (KiB) 5324

[startup+321.502 s]
/proc/loadavg: 0.99 1.01 1.64 2/78 20637
/proc/meminfo: memFree=1381824/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5324 CPUtime=321.4
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1348 0 0 0 32125 15 0 0 25 0 1 0 369660191 5451776 1221 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525814 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1331 1221 48 102 0 1226 0
Current children cumulated CPU time (s) 321.4
Current children cumulated vsize (KiB) 5324

[startup+321.902 s]
/proc/loadavg: 0.99 1.01 1.64 2/78 20637
/proc/meminfo: memFree=1381824/2055920 swapFree=4168576/4192956
[pid=20636] ppid=20634 vsize=5324 CPUtime=321.8
/proc/20636/stat : 20636 (picosat) R 20634 20636 19199 0 -1 4194304 1348 0 0 0 32165 15 0 0 25 0 1 0 369660191 5451776 1221 18446744073709551615 134512640 134931368 4294956704 18446744073709551615 134525754 0 0 4096 0 0 0 0 17 1 0 0
/proc/20636/statm: 1331 1221 48 102 0 1226 0
Current children cumulated CPU time (s) 321.8
Current children cumulated vsize (KiB) 5324

Child status: 20
Real time (s): 321.963
CPU time (s): 321.864
CPU user time (s): 321.712
CPU system time (s): 0.151976
CPU usage (%): 99.9693
Max. virtual memory (cumulated for all children) (KiB): 5324

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 321.712
system time used= 0.151976
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1350
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= 7
involuntary context switches= 6810

runsolver used 0.403938 second user time and 0.742887 second system time

The end

Launcher Data (download as text)

Begin job on node17 on Sat Mar 10 03:24:19 UTC 2007

IDJOB= 332940
IDBENCH= 24592
IDSOLVER= 106
FILE ID= node17/332940-1173497059

PBS_JOBID= 4101107

Free space on /tmp= 66533 MiB

SOLVER NAME= picosat 535
BENCH NAME= HOME/pub/bench/SAT07/crafted/Medium/contest05/others/gensys-ukn002.sat05-2744.reshuffled-07.cnf
COMMAND LINE= /tmp/evaluation/332940-1173497059/picosat /tmp/evaluation/332940-1173497059/instance-332940-1173497059.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node17/watcher-332940-1173497059 -o ROOT/results/node17/solver-332940-1173497059 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/332940-1173497059/picosat /tmp/evaluation/332940-1173497059/instance-332940-1173497059.cnf            

META MD5SUM SOLVER= 1cb12d44dc66ecc4d20a168f5cfd1323
MD5SUM BENCH=  a2019e53d39465096d989c5106a4e0ef

RANDOM SEED= 713470615

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node17.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		: 3000.229
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		: 3000.229
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:       1387488 kB
Buffers:         50920 kB
Cached:         523140 kB
SwapCached:       2172 kB
Active:         289656 kB
Inactive:       307180 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1387488 kB
SwapTotal:     4192956 kB
SwapFree:      4168576 kB
Dirty:             892 kB
Writeback:           0 kB
Mapped:          30544 kB
Slab:            57168 kB
Committed_AS:  1437364 kB
PageTables:       1748 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= 66533 MiB

End job on node17 on Sat Mar 10 03:29:42 UTC 2007