Trace number 312583

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
MXC 2007-02-08UNSAT 171.211 171.298

General information on the benchmark

Nameindustrial/anbulagan/
medium-unsat/total-10-11-u.cnf
MD5SUM72bf29e65f8337564b4a44baea32f1cb
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark75.1746
Satisfiable
(Un)Satisfiability was proved
Number of variables192890
Number of clauses855991
Sum of the clauses size1944492
Maximum clause length10
Minimum clause length1
Number of clauses of size 116350
Number of clauses of size 2701001
Number of clauses of size 3101900
Number of clauses of size 44080
Number of clauses of size 516320
Number of clauses of size over 516340

Solver Data (download as text)

171.12/171.28	c MXC attempting /tmp/evaluation/312583-1176856993/instance-312583-1176856993.cnf
171.12/171.28	c 48756 assignments made, starting to guess now
171.12/171.28	c ===================================[MXC]=====================================
171.12/171.28	c | Conflicts |     ORIGINAL     |             LEARNT              | Progress |
171.12/171.28	c |           | Clauses Literals |  Limit Clauses Literals  Lit/Cl |          |
171.12/171.28	c =============================================================================
171.12/171.28	c |         0 |  108448   406254 |   36149       0       0     nan | 25.277 % |
171.12/171.28	c |       100 |  104483   389639 |   39763      87    2798    32.2 | 28.113 % |
171.12/171.28	c |       250 |   99662   369445 |   43740     223    8797    39.4 | 31.583 % |
171.12/171.28	c |       483 |   98420   363786 |   48114     447   34808    77.9 | 32.642 % |
171.12/171.28	c |       821 |   98141   362790 |   52925     765   78849   103.1 | 32.796 % |
171.12/171.28	c |      1328 |   93473   341429 |   58218    1226  103307    84.3 | 36.759 % |
171.12/171.28	c |      2088 |   90404   327575 |   64040    1480  112398    75.9 | 39.408 % |
171.12/171.28	c |      3228 |   79497   273828 |   70444    2261  207978    92.0 | 49.880 % |
171.12/171.28	c |      4936 |   70476   241555 |   77488    3915  456300   116.6 | 52.991 % |
171.12/171.28	c |      7499 |   70250   240783 |   85237    6469 1499688   231.8 | 53.115 % |
171.12/171.28	c |     11344 |   68386   232832 |   93761   10262 1914860   186.6 | 54.593 % |
171.12/171.28	c |     17110 |   61947   212926 |  103137   15918 2794437   175.6 | 55.353 % |
171.12/171.28	c |     25759 |   61274   210520 |  113451   24520 3808686   155.3 | 55.779 % |
171.12/171.28	c 171.220s elapsed
171.12/171.28	c restarts: 12
171.12/171.28	c decisions: 79803
171.12/171.28	c propagations: 184532381
171.12/171.28	c conflicts: 31672
171.12/171.28	s UNSATISFIABLE

Verifier Data (download as text)

No possible verification on an UNSAT instance

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node25/watcher-312583-1176856993 -o ROOT/results/node25/solver-312583-1176856993 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/312583-1176856993/mxc /tmp/evaluation/312583-1176856993/instance-312583-1176856993.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: 0.98 0.99 0.99 3/64 16767
/proc/meminfo: memFree=1724928/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=15904 CPUtime=0
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 732 0 0 0 0 0 0 0 18 0 1 0 133616423 16285696 716 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134550509 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 3976 722 42 122 0 3850 0

[startup+0.015712 s]
/proc/loadavg: 0.98 0.99 0.99 3/64 16767
/proc/meminfo: memFree=1724928/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=15904 CPUtime=0.01
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 2563 0 0 0 0 1 0 0 18 0 1 0 133616423 16285696 2548 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134550509 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 3976 2555 42 122 0 3850 0
Current children cumulated CPU time (s) 0.01
Current children cumulated vsize (KiB) 15904

[startup+0.101725 s]
/proc/loadavg: 0.98 0.99 0.99 3/64 16767
/proc/meminfo: memFree=1724928/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=38768 CPUtime=0.09
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 8600 0 0 0 5 4 0 0 18 0 1 0 133616423 39698432 8584 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134688363 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 9692 8584 46 122 0 9566 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 38768

[startup+0.301759 s]
/proc/loadavg: 0.98 0.99 0.99 3/64 16767
/proc/meminfo: memFree=1724928/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=45760 CPUtime=0.29
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 10344 0 0 0 24 5 0 0 19 0 1 0 133616423 46858240 10328 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134522506 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 11440 10328 46 122 0 11314 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 45760

[startup+0.701828 s]
/proc/loadavg: 0.98 0.99 0.99 3/64 16767
/proc/meminfo: memFree=1724928/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=37892 CPUtime=0.69
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 12089 0 0 0 64 5 0 0 22 0 1 0 133616423 38801408 8330 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519105 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 9473 8330 59 122 0 9347 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 37892

[startup+1.50196 s]
/proc/loadavg: 0.98 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1691640/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=37892 CPUtime=1.49
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 12101 0 0 0 144 5 0 0 25 0 1 0 133616423 38801408 8342 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 9473 8342 59 122 0 9347 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 37892

[startup+3.10125 s]
/proc/loadavg: 0.98 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1691448/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=37892 CPUtime=3.08
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 12111 0 0 0 303 5 0 0 25 0 1 0 133616423 38801408 8352 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134528104 0 0 4096 0 0 0 0 17 0 0 0
/proc/16767/statm: 9473 8352 59 122 0 9347 0
Current children cumulated CPU time (s) 3.08
Current children cumulated vsize (KiB) 37892

[startup+6.30178 s]
/proc/loadavg: 0.98 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1691320/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=38156 CPUtime=6.29
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 12157 0 0 0 623 6 0 0 25 0 1 0 133616423 39071744 8398 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134531560 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 9539 8398 59 122 0 9413 0
Current children cumulated CPU time (s) 6.29
Current children cumulated vsize (KiB) 38156

[startup+12.7019 s]
/proc/loadavg: 0.98 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1690808/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=38684 CPUtime=12.68
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 12310 0 0 0 1262 6 0 0 25 0 1 0 133616423 39612416 8551 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 9671 8551 59 122 0 9545 0
Current children cumulated CPU time (s) 12.68
Current children cumulated vsize (KiB) 38684

[startup+25.5011 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1689016/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=40400 CPUtime=25.47
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 12760 0 0 0 2541 6 0 0 25 0 1 0 133616423 41369600 9001 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134531106 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 10100 9001 59 122 0 9974 0
Current children cumulated CPU time (s) 25.47
Current children cumulated vsize (KiB) 40400

[startup+51.1014 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1683000/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=46344 CPUtime=51.06
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 14250 0 0 0 5099 7 0 0 25 0 1 0 133616423 47456256 10491 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134531167 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 11586 10491 59 122 0 11460 0
Current children cumulated CPU time (s) 51.06
Current children cumulated vsize (KiB) 46344

[startup+102.305 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1676408/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=53076 CPUtime=102.24
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 15922 0 0 0 10215 9 0 0 25 0 1 0 133616423 54349824 12163 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519653 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 13269 12163 59 122 0 13143 0
Current children cumulated CPU time (s) 102.24
Current children cumulated vsize (KiB) 53076

[startup+162.301 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1670968/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=58496 CPUtime=162.21
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 17285 0 0 0 16210 11 0 0 25 0 1 0 133616423 59899904 13526 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519890 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 14624 13526 59 122 0 14498 0
Current children cumulated CPU time (s) 162.21
Current children cumulated vsize (KiB) 58496

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

[startup+166.301 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1670712/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=58628 CPUtime=166.21
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 17332 0 0 0 16610 11 0 0 25 0 1 0 133616423 60035072 13573 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519150 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 14657 13573 59 122 0 14531 0
Current children cumulated CPU time (s) 166.21
Current children cumulated vsize (KiB) 58628

[startup+169.503 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1670520/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=58760 CPUtime=169.42
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 17382 0 0 0 16930 12 0 0 25 0 1 0 133616423 60170240 13623 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519605 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 14690 13623 59 122 0 14564 0
Current children cumulated CPU time (s) 169.42
Current children cumulated vsize (KiB) 58760

[startup+170.302 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1670520/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=58892 CPUtime=170.22
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 17394 0 0 0 17010 12 0 0 25 0 1 0 133616423 60305408 13635 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134531142 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 14723 13635 59 122 0 14597 0
Current children cumulated CPU time (s) 170.22
Current children cumulated vsize (KiB) 58892

[startup+170.702 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1670456/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=58892 CPUtime=170.62
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 17396 0 0 0 17050 12 0 0 25 0 1 0 133616423 60305408 13637 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134535083 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 14723 13637 59 122 0 14597 0
Current children cumulated CPU time (s) 170.62
Current children cumulated vsize (KiB) 58892

[startup+171.102 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1670456/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=58892 CPUtime=171.02
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 17398 0 0 0 17090 12 0 0 25 0 1 0 133616423 60305408 13639 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134519215 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 14723 13639 59 122 0 14597 0
Current children cumulated CPU time (s) 171.02
Current children cumulated vsize (KiB) 58892

[startup+171.202 s]
/proc/loadavg: 0.99 0.99 0.99 2/65 16768
/proc/meminfo: memFree=1670456/2055920 swapFree=4166424/4192956
[pid=16767] ppid=16765 vsize=58892 CPUtime=171.12
/proc/16767/stat : 16767 (mxc) R 16765 16767 15798 0 -1 4194304 17398 0 0 0 17100 12 0 0 25 0 1 0 133616423 60305408 13639 18446744073709551615 134512640 135013041 4294956640 18446744073709551615 134531065 0 0 4096 0 0 0 0 17 1 0 0
/proc/16767/statm: 14723 13639 59 122 0 14597 0
Current children cumulated CPU time (s) 171.12
Current children cumulated vsize (KiB) 58892

Child status: 20
Real time (s): 171.298
CPU time (s): 171.211
CPU user time (s): 171.08
CPU system time (s): 0.13098
CPU usage (%): 99.949
Max. virtual memory (cumulated for all children) (KiB): 58892

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 171.08
system time used= 0.13098
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 17405
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= 8
involuntary context switches= 497

runsolver used 0.122981 second user time and 0.355945 second system time

The end

Launcher Data (download as text)

Begin job on node25 on Wed Apr 18 00:43:13 UTC 2007

IDJOB= 312583
IDBENCH= 20345
IDSOLVER= 107
FILE ID= node25/312583-1176856993

PBS_JOBID= 4590194

Free space on /tmp= 66466 MiB

SOLVER NAME= MXC 2007-02-08
BENCH NAME= HOME/pub/bench/SAT07/industrial/anbulagan/medium-unsat/total-10-11-u.cnf
COMMAND LINE= /tmp/evaluation/312583-1176856993/mxc /tmp/evaluation/312583-1176856993/instance-312583-1176856993.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node25/watcher-312583-1176856993 -o ROOT/results/node25/solver-312583-1176856993 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/312583-1176856993/mxc /tmp/evaluation/312583-1176856993/instance-312583-1176856993.cnf            

META MD5SUM SOLVER= fd459248d3e92e664505cc2f0f683bf4
MD5SUM BENCH=  72bf29e65f8337564b4a44baea32f1cb

RANDOM SEED= 670493059

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node25.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		: 3000.261
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		: 3000.261
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:       1725336 kB
Buffers:         24400 kB
Cached:         237148 kB
SwapCached:      20788 kB
Active:          65392 kB
Inactive:       222660 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1725336 kB
SwapTotal:     4192956 kB
SwapFree:      4166424 kB
Dirty:           15552 kB
Writeback:           0 kB
Mapped:          15420 kB
Slab:            28628 kB
Committed_AS:  2111908 kB
PageTables:       1472 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= 66466 MiB

End job on node25 on Wed Apr 18 00:46:05 UTC 2007