Trace number 452858

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
bsolo 3.0.17OPT3 8.05477 8.0664

General information on the benchmark

Namenormalized-PB07/OPT-SMALLINT-NLC/submittedPB07/roussel/factor-mod-B/
factor-mod-size=7-P0=97-P1=37-P2=107-P3=53-P4=53-B.opb
MD5SUM3c1c5627c2ecb7d046a74fd6c2fb2be3
Bench CategoryOPT-SMALLINT-NLC (optimisation, small integers, non linear constraints)
Best result obtained on this benchmarkOPT
Best value of the objective obtained on this benchmark3
Best CPU time to get the best result obtained on this benchmark0.071988
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 3
Optimality of the best value was proved YES
Number of variables84
Total number of constraints9
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints9
Minimum length of a constraint7
Maximum length of a constraint63
Number of terms in the objective function 7
Biggest coefficient in the objective function 64
Number of bits for the biggest coefficient in the objective function 7
Sum of the numbers in the objective function 127
Number of bits of the sum of numbers in the objective function 7
Biggest number in a constraint 8192
Number of bits of the biggest number in a constraint 14
Biggest sum of numbers in a constraint 32512
Number of bits of the biggest sum of numbers15
Number of products (including duplicates)196
Sum of products size (including duplicates)392
Number of different products196
Sum of products size392

Quality of the solution as a function of time


Download the above graph as a PDF file / as an EPS file

Solver Data (download as text)

0.00/0.01	c bsolo beta version 3.0.17 - 27/04/2007 : 1600 GMT
0.00/0.01	c Developed by Vasco Manquinho IST/UTL - INESC-ID
0.00/0.01	c type "bsolo -h" for help
0.00/0.01	c Time Limit set via environment variable PBTIMEOUT to 1800
0.00/0.01	c Memory Limit set to 1800 MB
0.00/0.01	c Instance file /tmp/evaluation/452858-1177987190/instance-452858-1177987190.opb
0.00/0.01	c File size is 3651 bytes.
0.00/0.01	c Highest Coefficient sum: 32512
0.00/0.01	c Parsing was ok!!
0.00/0.01	c Total parsing time: 0.002 s
0.00/0.01	c Var: 280 Constr: 405 196/0/209 Lit: 1701 Watch. Lit: 1054
0.00/0.01	c Obj. Vars: 7 (2.5 % of total variables)
0.00/0.01	c Pre-processing Time: 0.005 s
0.00/0.01	c    Confl   Vars     Ctrs     Lits  LPC   W.Lits     Max Learnt Conf/s Time
0.00/0.01	c        0    280      405     1701    4     1459    2291      0      0 0.01
0.00/0.01	c Switching off LPR mode.
2.88/2.92	c      103    280      508     6772   13     1645    2521    103   9363 0.01
2.88/2.92	c      254    280      659    14021   21     1909    2774    254  12700 0.02
2.88/2.92	c      479    280      884    24414   27     2338    3052    479  14088 0.03
2.88/2.92	c      818    280     1223    40098   32     2999    3358    818  12781 0.06
2.88/2.92	c     1327    280     1732    62626   36     4012    3694   1327  10788 0.12
2.88/2.92	c     2091    280     2496    99095   39     5548    4064   2091  10004 0.21
2.88/2.92	c     3237    280     3642   150331   41     7824    4471   3237   8072 0.40
2.88/2.92	c     4958    280     3083   116828   37     6713    4919   2678   5930 0.84
2.88/2.92	c     7543    280     3015   120185   39     6625    5411   2610   5824 1.29
2.88/2.92	c    11423    279     4085   180366   44     8769    5953   3680   5373 2.13
2.88/2.92	o 67	2.911
3.39/3.45	c    Confl   Vars     Ctrs     Lits  LPC   W.Lits     Max Learnt Conf/s Time
3.39/3.45	c    15542    279     5066   233080   46    10702    2305   4661   5339 2.91
3.39/3.45	c    15643    279     1662    66208   39     3955    2536   1257   5333 2.93
3.39/3.45	c    15893    279     1912    78915   41     4449    2790   1507   5385 2.95
3.39/3.45	c    16368    279     2387   104304   43     5377    3070   1982   5461 3.00
3.39/3.45	c    17181    279     3200   145905   45     7025    3378   2795   5560 3.09
3.39/3.45	c    18502    279     2787   118951   42     6156    3716   2382   5482 3.38
3.39/3.45	o 19	3.44
5.88/5.97	c    Confl   Vars     Ctrs     Lits  LPC   W.Lits     Max Learnt Conf/s Time
5.88/5.97	c    19282    279     3568   160072   44     7700    2305   3163   5605 3.44
5.88/5.97	c    19383    279     1661    66708   40     3936    2536   1256   5597 3.46
5.88/5.97	c    19633    279     1911    79320   41     4425    2790   1506   5625 3.49
5.88/5.97	c    20109    279     2387   102447   42     5384    3070   1982   5653 3.56
5.88/5.97	c    20923    279     3201   142938   44     7001    3378   2796   5659 3.70
5.88/5.97	c    22244    279     2786   119127   42     6180    3716   2381   5603 3.97
5.88/5.97	c    24326    279     2984   127919   42     6547    4088   2579   5450 4.46
5.88/5.97	c    27550    270     4073   177509   43     8775    4497   3668   5236 5.26
5.88/5.97	o 5	5.964
5.98/6.03	c    Confl   Vars     Ctrs     Lits  LPC   W.Lits     Max Learnt Conf/s Time
5.98/6.03	c    30299    267     4512   188769   41     9665    2303   4107   5080 5.96
5.98/6.03	c    30401    267     1662    58977   35     3901    2534   1257   5070 6.00
5.98/6.03	o 3	6.02
7.98/8.06	c    Confl   Vars     Ctrs     Lits  LPC   W.Lits     Max Learnt Conf/s Time
7.98/8.06	c    30612    240     1874    69870   37     4382    2297   1469   5085 6.02
7.98/8.06	c    30714    221     1976    75169   38     4570    2527   1571   5094 6.03
7.98/8.06	c    30964    221     2226    87113   39     5064    2780   1821   5100 6.07
7.98/8.06	c    31440    221     2702   110245   40     6039    3059   2297   5106 6.16
7.98/8.06	c    32254    221     3516   147989   42     7662    3365   3111   5093 6.33
7.98/8.06	c    33575    221     3055   128928   42     6718    3702   2650   5079 6.61
7.98/8.06	c    35656    221     3184   138166   43     6949    4073   2779   5006 7.12
7.98/8.06	c    38880    220     4279   182918   42     9175    4481   3874   4884 7.96
7.98/8.06	v x1 x2 -x3 -x4 -x5 -x6 -x7 x8 x9 -x10 x11 -x12 x13 -x14 x15 x16 -x17 -x18 -x19 -x20 -x21 x22 x23 -x24 x25 -x26 x27 -x28 x29 x30 x31 x32
7.98/8.06	v x33 -x34 x35 x36 -x37 -x38 -x39 -x40 -x41 -x42 x57 -x58 -x59 -x60 -x61 -x62 -x63 x43 x44 -x45 -x46 -x47 -x48 -x49 -x64 -x65 -x66
7.98/8.06	v -x67 -x68 -x69 -x70 x50 -x51 -x52 -x53 -x54 -x55 -x56 x71 -x72 -x73 -x74 -x75 -x76 -x77 -x78 -x79 -x80 -x81 -x82 -x83 -x84
7.98/8.06	c  Rst    Confl    NCB      Dec     Ctrs     Lits Learnt Conf/s Time
7.98/8.06	c   34    39182    327    42042     4581   196412   4176   4867 8.05
7.98/8.06	c Objective: 3
7.98/8.06	s OPTIMUM FOUND
7.98/8.06	c Total time: 8.05 s

Verifier Data (download as text)

OK	3

Watcher Data (download as text)

runsolver version 3.2.3 (c) roussel@cril.univ-artois.fr

command line: runsolver --timestamp -w ROOT/results/node40/watcher-452858-1177987190 -o ROOT/results/node40/solver-452858-1177987190 -C 1800 -W 3600 -M 1800 --output-limit 1,15 bsolo3.0.17 -m1800 /tmp/evaluation/452858-1177987190/instance-452858-1177987190.opb 

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: 0.93 0.99 0.99 3/77 17235
/proc/meminfo: memFree=1818912/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=19552 CPUtime=0
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 341 0 3 0 0 0 0 0 18 0 1 0 127598647 20021248 314 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134536096 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 4888 323 278 324 0 3957 0

[startup+0.037468 s]
/proc/loadavg: 0.93 0.99 0.99 3/77 17235
/proc/meminfo: memFree=1818912/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=4316 CPUtime=0.02
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 482 0 3 0 2 0 0 0 18 0 1 0 127598647 4419584 454 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 7345787 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 1079 454 310 324 0 149 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 4316

[startup+0.101481 s]
/proc/loadavg: 0.93 0.99 0.99 3/77 17235
/proc/meminfo: memFree=1818912/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=4836 CPUtime=0.08
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 605 0 3 0 8 0 0 0 18 0 1 0 127598647 4952064 577 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 7345787 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 1209 577 310 324 0 279 0
Current children cumulated CPU time (s) 0.08
Current children cumulated vsize (KiB) 4836

[startup+0.301522 s]
/proc/loadavg: 0.93 0.99 0.99 3/77 17235
/proc/meminfo: memFree=1818912/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=5880 CPUtime=0.28
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 889 0 3 0 28 0 0 0 19 0 1 0 127598647 6021120 861 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134551365 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 1470 861 310 324 0 540 0
Current children cumulated CPU time (s) 0.28
Current children cumulated vsize (KiB) 5880

[startup+0.701606 s]
/proc/loadavg: 0.93 0.99 0.99 3/77 17235
/proc/meminfo: memFree=1818912/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=7052 CPUtime=0.68
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 1160 0 3 0 68 0 0 0 22 0 1 0 127598647 7221248 1132 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134551428 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 1763 1132 310 324 0 833 0
Current children cumulated CPU time (s) 0.68
Current children cumulated vsize (KiB) 7052

[startup+1.50177 s]
/proc/loadavg: 0.93 0.99 0.99 2/78 17236
/proc/meminfo: memFree=1814424/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=7576 CPUtime=1.48
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 1292 0 3 0 148 0 0 0 25 0 1 0 127598647 7757824 1264 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 7352071 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 1894 1264 310 324 0 964 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 7576

[startup+3.10111 s]
/proc/loadavg: 0.93 0.99 0.99 2/78 17236
/proc/meminfo: memFree=1813528/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=8612 CPUtime=3.08
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 1563 0 3 0 307 1 0 0 25 0 1 0 127598647 8818688 1535 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 4294960144 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 2153 1535 311 324 0 1223 0
Current children cumulated CPU time (s) 3.08
Current children cumulated vsize (KiB) 8612

[startup+6.30178 s]
/proc/loadavg: 0.93 0.99 0.99 2/78 17236
/proc/meminfo: memFree=1812968/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=8612 CPUtime=6.28
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 1563 0 3 0 627 1 0 0 25 0 1 0 127598647 8818688 1535 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134550804 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 2153 1535 311 324 0 1223 0
Current children cumulated CPU time (s) 6.28
Current children cumulated vsize (KiB) 8612

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

[startup+7.10195 s]
/proc/loadavg: 0.93 0.99 0.99 2/78 17236
/proc/meminfo: memFree=1812968/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=8612 CPUtime=7.08
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 1563 0 3 0 707 1 0 0 25 0 1 0 127598647 8818688 1535 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134586558 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 2153 1535 311 324 0 1223 0
Current children cumulated CPU time (s) 7.08
Current children cumulated vsize (KiB) 8612

[startup+7.50203 s]
/proc/loadavg: 0.93 0.99 0.99 2/78 17236
/proc/meminfo: memFree=1812968/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=8612 CPUtime=7.48
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 1563 0 3 0 747 1 0 0 25 0 1 0 127598647 8818688 1535 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134551100 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 2153 1535 311 324 0 1223 0
Current children cumulated CPU time (s) 7.48
Current children cumulated vsize (KiB) 8612

[startup+7.90111 s]
/proc/loadavg: 0.93 0.99 0.99 2/78 17236
/proc/meminfo: memFree=1812968/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=8612 CPUtime=7.88
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 1563 0 3 0 787 1 0 0 25 0 1 0 127598647 8818688 1535 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 4160521828 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 2153 1535 311 324 0 1223 0
Current children cumulated CPU time (s) 7.88
Current children cumulated vsize (KiB) 8612

[startup+8.00113 s]
/proc/loadavg: 0.93 0.99 0.99 2/78 17236
/proc/meminfo: memFree=1812968/2055920 swapFree=4157412/4192956
[pid=17235] ppid=17233 vsize=8612 CPUtime=7.98
/proc/17235/stat : 17235 (bsolo3.0.17) R 17233 17235 12852 0 -1 4194304 1563 0 3 0 797 1 0 0 25 0 1 0 127598647 8818688 1535 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134550779 0 0 4096 16384 0 0 0 17 1 0 0
/proc/17235/statm: 2153 1535 311 324 0 1223 0
Current children cumulated CPU time (s) 7.98
Current children cumulated vsize (KiB) 8612

Child status: 0
Real time (s): 8.0664
CPU time (s): 8.05477
CPU user time (s): 8.04078
CPU system time (s): 0.013997
CPU usage (%): 99.8559
Max. virtual memory (cumulated for all children) (KiB): 8612

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 8.04078
system time used= 0.013997
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 1567
page faults= 3
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 15
involuntary context switches= 20

runsolver used 0.008998 second user time and 0.024996 second system time

The end

Launcher Data (download as text)

Begin job on node40 on Tue May  1 02:39:51 UTC 2007

IDJOB= 452858
IDBENCH= 47925
IDSOLVER= 199
FILE ID= node40/452858-1177987190

PBS_JOBID= 4728180

Free space on /tmp= 66538 MiB

SOLVER NAME= bsolo 3.0.17
BENCH NAME= HOME/pub/bench/PB07/normalized-PB07/OPT-SMALLINT-NLC/submittedPB07/roussel/factor-mod-B/factor-mod-size=7-P0=97-P1=37-P2=107-P3=53-P4=53-B.opb
COMMAND LINE= bsolo3.0.17 -m1800 /tmp/evaluation/452858-1177987190/instance-452858-1177987190.opb            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node40/watcher-452858-1177987190 -o ROOT/results/node40/solver-452858-1177987190 -C 1800 -W 3600 -M 1800 --output-limit 1,15  bsolo3.0.17 -m1800 /tmp/evaluation/452858-1177987190/instance-452858-1177987190.opb            

META MD5SUM SOLVER= c9b15312c639dd71a11a1e3ca1b27020
MD5SUM BENCH=  3c1c5627c2ecb7d046a74fd6c2fb2be3

RANDOM SEED= 253454629

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB

Linux node40.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		: 3000.283
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		: 3000.283
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:       1819256 kB
Buffers:         17644 kB
Cached:         130792 kB
SwapCached:      14968 kB
Active:          18096 kB
Inactive:       153912 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1819256 kB
SwapTotal:     4192956 kB
SwapFree:      4157412 kB
Dirty:            6600 kB
Writeback:           0 kB
Mapped:          30552 kB
Slab:            49976 kB
Committed_AS:  1160548 kB
PageTables:       1936 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= 66538 MiB

End job on node40 on Tue May  1 02:39:59 UTC 2007