Trace number 318565

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 CRAFTEDUNSAT 102.791 102.857

General information on the benchmark

Nameindustrial/babic/
dspam/dspam_dump_vc1080.cnf
MD5SUM4648b50fdaaf9e2a2c3c691f7cb02f96
Bench CategoryINDUST (industrial instances)
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.20881
Satisfiable
(Un)Satisfiability was proved
Number of variables118226
Number of clauses375379
Sum of the clauses size994145
Maximum clause length3
Minimum clause length1
Number of clauses of size 13289
Number of clauses of size 2125414
Number of clauses of size 3246676
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data (download as text)

67.23/67.37	c run March_dl for 5 seconds ... 
67.23/67.37	c Bin: Executing march_dl
67.23/67.37	c child exit by a signal
67.23/67.37	c march_dl returned code 137.
67.23/67.37	c run saps (UBCSAT implementation) for 2 seconds ... 
67.23/67.37	c Bin: Executing ubcsat2006
67.23/67.37	c child exited successfully
67.23/67.37	c ubcsat2006 returned code 0.
67.23/67.37	c satzilla computing base features
67.23/67.37	c satzilla doing unit-prop probe
67.23/67.37	c satzilla doing local search probe
67.23/67.37	c satzilla doing lobjois search-space size estimate
67.23/67.37	c satzilla's ranking:
67.23/67.37	c 1) minisat20+P: -5.256155
67.23/67.37	c 2) minisat20: 0.934848
67.23/67.37	c 3) vallst+P: 2.572948
67.23/67.37	c 4) march_dl: 4.139545
67.23/67.37	c 5) zchaff_rand+P: 4.780930
67.23/67.37	c 6) march_dl+P: 42.795983
67.23/67.37	c 7) kcnfs+P: 999.000000
67.23/67.37	c 8) kcnfs: 999.000000
67.23/67.37	c 9) vallst: 999.000000
67.23/67.37	c 10) zchaff_rand: 999.000000
67.23/67.37	c satzilla running minisat20 with preprocessing ... 
102.72/102.83	c Preprocessing...
102.72/102.83	c Inital problem has 118298 variables, 249965 nary clauses (125414 binary clauses).
102.72/102.83	c Num non-binary clauses 246676, Average non-binary clause length 3.000
102.72/102.83	c CONTRADICTION found(2)!
102.72/102.83	c CONTRADICTION found(2)!
102.72/102.83	c Preprocessor runtime was 34.890 seconds.
102.72/102.83	c 
102.72/102.83	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/node67/watcher-318565-1176320002 -o ROOT/results/node67/solver-318565-1176320002 -C 1200 -W 2400 -M 1800 --output-limit 1,15 /tmp/evaluation/318565-1176320002/SATzilla2007_C /tmp/evaluation/318565-1176320002/instance-318565-1176320002.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: 0.91 0.97 0.99 3/64 21270
/proc/meminfo: memFree=1409776/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=1440 CPUtime=0
/proc/21270/stat : 21270 (SATzilla2007_C) S 21268 21270 20850 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 107989774 1474560 110 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21270/statm: 360 110 95 260 0 84 0
[pid=21271] ppid=21270 vsize=6156 CPUtime=0
/proc/21271/stat : 21271 (march_dl) R 21270 21270 20850 0 -1 4194304 569 0 0 0 0 0 0 0 19 0 1 0 107989774 6303744 564 18446744073709551615 134512640 134996440 4294956624 18446744073709551615 134652876 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21271/statm: 1539 567 49 118 0 1418 0

[startup+0.0368459 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 21270
/proc/meminfo: memFree=1409776/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=1440 CPUtime=0
/proc/21270/stat : 21270 (SATzilla2007_C) S 21268 21270 20850 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 107989774 1474560 110 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21270/statm: 360 110 95 260 0 84 0
[pid=21271] ppid=21270 vsize=11112 CPUtime=0.02
/proc/21271/stat : 21271 (march_dl) R 21270 21270 20850 0 -1 4194304 2225 0 0 0 2 0 0 0 19 0 1 0 107989774 11378688 2220 18446744073709551615 134512640 134996440 4294956624 18446744073709551615 134669245 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21271/statm: 2778 2221 50 118 0 2657 0
Current children cumulated CPU time (s) 0.02
Current children cumulated vsize (KiB) 12552

[startup+0.101858 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 21270
/proc/meminfo: memFree=1409776/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=1440 CPUtime=0
/proc/21270/stat : 21270 (SATzilla2007_C) S 21268 21270 20850 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 107989774 1474560 110 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21270/statm: 360 110 95 260 0 84 0
[pid=21271] ppid=21270 vsize=11904 CPUtime=0.09
/proc/21271/stat : 21271 (march_dl) R 21270 21270 20850 0 -1 4194304 2458 0 0 0 9 0 0 0 19 0 1 0 107989774 12189696 2453 18446744073709551615 134512640 134996440 4294956624 18446744073709551615 134549887 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21271/statm: 2976 2453 50 118 0 2855 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 13344

[startup+0.301894 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 21270
/proc/meminfo: memFree=1409776/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=1440 CPUtime=0
/proc/21270/stat : 21270 (SATzilla2007_C) S 21268 21270 20850 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 107989774 1474560 110 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21270/statm: 360 110 95 260 0 84 0
[pid=21271] ppid=21270 vsize=14016 CPUtime=0.29
/proc/21271/stat : 21271 (march_dl) R 21270 21270 20850 0 -1 4194304 3131 0 0 0 28 1 0 0 20 0 1 0 107989774 14352384 3126 18446744073709551615 134512640 134996440 4294956624 18446744073709551615 134669245 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21271/statm: 3504 3126 50 118 0 3383 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 15456

[startup+0.701968 s]
/proc/loadavg: 0.91 0.97 0.99 3/64 21270
/proc/meminfo: memFree=1409776/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=1440 CPUtime=0
/proc/21270/stat : 21270 (SATzilla2007_C) S 21268 21270 20850 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 107989774 1474560 110 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21270/statm: 360 110 95 260 0 84 0
[pid=21271] ppid=21270 vsize=33612 CPUtime=0.69
/proc/21271/stat : 21271 (march_dl) R 21270 21270 20850 0 -1 4194304 7721 0 0 0 66 3 0 0 25 0 1 0 107989774 34418688 6873 18446744073709551615 134512640 134996440 4294956624 18446744073709551615 134644005 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21271/statm: 8403 6873 53 118 0 8282 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 35052

[startup+1.50112 s]
/proc/loadavg: 0.91 0.97 0.99 2/66 21272
/proc/meminfo: memFree=1379744/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=1440 CPUtime=0
/proc/21270/stat : 21270 (SATzilla2007_C) S 21268 21270 20850 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 107989774 1474560 110 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21270/statm: 360 110 95 260 0 84 0
[pid=21271] ppid=21270 vsize=40768 CPUtime=1.48
/proc/21271/stat : 21271 (march_dl) R 21270 21270 20850 0 -1 4194304 11623 0 0 0 144 4 0 0 25 0 1 0 107989774 41746432 8704 18446744073709551615 134512640 134996440 4294956624 18446744073709551615 134544567 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21271/statm: 10192 8704 55 118 0 10071 0
Current children cumulated CPU time (s) 1.48
Current children cumulated vsize (KiB) 42208

[startup+3.10141 s]
/proc/loadavg: 0.91 0.97 0.99 2/66 21272
/proc/meminfo: memFree=1374624/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=1440 CPUtime=0
/proc/21270/stat : 21270 (SATzilla2007_C) S 21268 21270 20850 0 -1 4194304 128 0 0 0 0 0 0 0 18 0 1 0 107989774 1474560 110 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 1 0 0
/proc/21270/statm: 360 110 95 260 0 84 0
[pid=21271] ppid=21270 vsize=41560 CPUtime=3.08
/proc/21271/stat : 21271 (march_dl) R 21270 21270 20850 0 -1 4194304 15502 0 0 0 301 7 0 0 25 0 1 0 107989774 42557440 9035 18446744073709551615 134512640 134996440 4294956624 18446744073709551615 134649656 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21271/statm: 10390 9035 57 118 0 10269 0
Current children cumulated CPU time (s) 3.08
Current children cumulated vsize (KiB) 43000

[startup+6.30199 s]
/proc/loadavg: 0.92 0.97 0.99 2/66 21273
/proc/meminfo: memFree=1404264/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=1440 CPUtime=4.99
/proc/21270/stat : 21270 (SATzilla2007_C) S 21268 21270 20850 0 -1 4194304 135 15881 0 0 0 0 491 8 16 0 1 0 107989774 1474560 111 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216413 0 0 4096 0 18446744071563356171 0 0 17 0 0 0
/proc/21270/statm: 360 111 96 260 0 84 0
[pid=21273] ppid=21270 vsize=34888 CPUtime=1.25
/proc/21273/stat : 21273 (ubcsat2006) R 21270 21270 20850 0 -1 4194304 6402 0 4 0 123 2 0 0 25 0 1 0 107990275 35725312 6389 18446744073709551615 134512640 134777720 4294956464 18446744073709551615 4294960144 0 0 8392704 0 0 0 0 17 1 0 0
/proc/21273/statm: 8722 6389 156 64 0 8303 0
Current children cumulated CPU time (s) 6.24
Current children cumulated vsize (KiB) 36328

[startup+12.7012 s]
/proc/loadavg: 0.93 0.97 0.99 2/65 21273
/proc/meminfo: memFree=1371184/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=42272 CPUtime=12.65
/proc/21270/stat : 21270 (SATzilla2007_C) R 21268 21270 20850 0 -1 4194304 9726 22289 0 4 505 3 745 12 25 0 1 0 107989774 43286528 9695 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 135216365 0 0 4096 0 0 0 0 17 1 0 0
/proc/21270/statm: 10568 9695 121 260 0 10292 0
Current children cumulated CPU time (s) 12.65
Current children cumulated vsize (KiB) 42272

[startup+25.5015 s]
/proc/loadavg: 0.94 0.97 0.99 2/65 21273
/proc/meminfo: memFree=1370736/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=42272 CPUtime=25.44
/proc/21270/stat : 21270 (SATzilla2007_C) R 21268 21270 20850 0 -1 4194304 9869 22289 0 4 1782 5 745 12 25 0 1 0 107989774 43286528 9838 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 134537941 0 0 4096 0 0 0 0 17 1 0 0
/proc/21270/statm: 10568 9838 121 260 0 10292 0
Current children cumulated CPU time (s) 25.44
Current children cumulated vsize (KiB) 42272

[startup+51.1012 s]
/proc/loadavg: 0.96 0.97 0.99 2/65 21273
/proc/meminfo: memFree=1369776/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=42272 CPUtime=51.04
/proc/21270/stat : 21270 (SATzilla2007_C) R 21268 21270 20850 0 -1 4194304 10134 22289 0 4 4339 8 745 12 25 0 1 0 107989774 43286528 10103 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 134537941 0 0 4096 0 0 0 0 17 1 0 0
/proc/21270/statm: 10568 10103 121 260 0 10292 0
Current children cumulated CPU time (s) 51.04
Current children cumulated vsize (KiB) 42272

[startup+102.306 s]
/proc/loadavg: 0.98 0.97 0.99 2/65 21273
/proc/meminfo: memFree=1306672/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=162480 CPUtime=102.22
/proc/21270/stat : 21270 (SATzilla2007_C) R 21268 21270 20850 0 -1 4194304 53321 22289 0 4 9424 41 745 12 25 0 1 0 107989774 166379520 26530 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 134595170 0 0 4096 0 0 0 0 17 1 0 0
/proc/21270/statm: 40620 26534 165 260 0 40344 0
Current children cumulated CPU time (s) 102.22
Current children cumulated vsize (KiB) 162480

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

[startup+102.702 s]
/proc/loadavg: 0.98 0.97 0.99 2/65 21273
/proc/meminfo: memFree=1306672/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=202736 CPUtime=102.62
/proc/21270/stat : 21270 (SATzilla2007_C) R 21268 21270 20850 0 -1 4194304 55835 22289 0 4 9463 42 745 12 25 0 1 0 107989774 207601664 29043 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 134597830 0 0 4096 0 0 0 0 17 1 0 0
/proc/21270/statm: 50684 29043 165 260 0 50408 0
Current children cumulated CPU time (s) 102.62
Current children cumulated vsize (KiB) 202736

[startup+102.802 s]
/proc/loadavg: 0.98 0.97 0.99 2/65 21273
/proc/meminfo: memFree=1306672/2055920 swapFree=4183884/4192956
[pid=21270] ppid=21268 vsize=202736 CPUtime=102.72
/proc/21270/stat : 21270 (SATzilla2007_C) R 21268 21270 20850 0 -1 4194304 55885 22289 0 4 9473 42 745 12 25 0 1 0 107989774 207601664 29093 18446744073709551615 134512640 135579813 4294956592 18446744073709551615 134597830 0 0 4096 0 0 0 0 17 1 0 0
/proc/21270/statm: 50684 29093 165 260 0 50408 0
Current children cumulated CPU time (s) 102.72
Current children cumulated vsize (KiB) 202736

Child status: 20
Real time (s): 102.857
CPU time (s): 102.791
CPU user time (s): 102.225
CPU system time (s): 0.565913
CPU usage (%): 99.9367
Max. virtual memory (cumulated for all children) (KiB): 361484

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 102.225
system time used= 0.565913
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 78192
page faults= 4
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 25
involuntary context switches= 123

runsolver used 0.06499 second user time and 0.228965 second system time

The end

Launcher Data (download as text)

Begin job on node67 on Wed Apr 11 19:33:23 UTC 2007

IDJOB= 318565
IDBENCH= 20457
IDSOLVER= 135
FILE ID= node67/318565-1176320002

PBS_JOBID= 4516712

Free space on /tmp= 66550 MiB

SOLVER NAME= SATzilla CRAFTED
BENCH NAME= HOME/pub/bench/SAT07/industrial/babic/dspam/dspam_dump_vc1080.cnf
COMMAND LINE= /tmp/evaluation/318565-1176320002/SATzilla2007_C /tmp/evaluation/318565-1176320002/instance-318565-1176320002.cnf            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node67/watcher-318565-1176320002 -o ROOT/results/node67/solver-318565-1176320002 -C 1200 -W 2400 -M 1800 --output-limit 1,15  /tmp/evaluation/318565-1176320002/SATzilla2007_C /tmp/evaluation/318565-1176320002/instance-318565-1176320002.cnf            

META MD5SUM SOLVER= a1f00d13cbb558b34a83b365ff80fcc3
MD5SUM BENCH=  4648b50fdaaf9e2a2c3c691f7cb02f96

RANDOM SEED= 43827632

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB

Linux node67.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		: 3000.263
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		: 3000.263
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:       1410184 kB
Buffers:         37428 kB
Cached:         447864 kB
SwapCached:       3152 kB
Active:         191696 kB
Inactive:       303760 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1410184 kB
SwapTotal:     4192956 kB
SwapFree:      4183884 kB
Dirty:           15464 kB
Writeback:           0 kB
Mapped:          16200 kB
Slab:           136264 kB
Committed_AS:   106456 kB
PageTables:       1456 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= 66550 MiB

End job on node67 on Wed Apr 11 19:35:06 UTC 2007