Solver Name | Answer | CPU time | Wall clock time |
---|---|---|---|
PBS4 2007-03-23 | UNSAT | 355.544 | 355.635 |
Name | normalized-PB06/SATUNSAT-SMALLINT/submitted-PB06/ namasivayam/tsp/normalized-t3002.11tsp11.1900567135.opb |
MD5SUM | ae752929c20bdaef808bd42af6910473 |
Bench Category | SATUNSAT-SMALLINT-LIN (no optimisation, small integers, linear constraints) |
Best result obtained on this benchmark | UNSAT |
Best value of the objective obtained on this benchmark | |
Best CPU time to get the best result obtained on this benchmark | 30.4434 |
Has Objective Function | NO |
Satisfiable | NO |
(Un)Satisfiability was proved | YES |
Best value of the objective function | |
Optimality of the best value was proved | |
Number of variables | 231 |
Total number of constraints | 2707 |
Number of constraints which are clauses | 2684 |
Number of constraints which are cardinality constraints (but not clauses) | 22 |
Number of constraints which are nor clauses,nor cardinality constraints | 1 |
Minimum length of a constraint | 2 |
Maximum length of a constraint | 110 |
Number of terms in the objective function | 0 |
Biggest coefficient in the objective function | 0 |
Number of bits for the biggest coefficient in the objective function | 0 |
Sum of the numbers in the objective function | 0 |
Number of bits of the sum of numbers in the objective function | 0 |
Biggest number in a constraint | 25 |
Number of bits of the biggest number in a constraint | 5 |
Biggest sum of numbers in a constraint | 761 |
Number of bits of the biggest sum of numbers | 10 |
Number of products (including duplicates) | 0 |
Sum of products size (including duplicates) | 0 |
Number of different products | 0 |
Sum of products size | 0 |
0.00/0.00 c PBS v4 by Bashar Al-Rawi & Fadi Aloul 0.00/0.00 c Solving /tmp/evaluation/359203-1176923047/instance-359203-1176923047.opb ...... 355.50/355.62 c done parsing opb. 355.50/355.62 s UNSATISFIABLE 355.50/355.62 c Total Run Time 355.51
ERROR: no interpretation found !
/tmp/evaluation/359203-1176923047/instance-359203-1176923047.opb is already a linear file
runsolver version 3.2.2 (c) roussel@cril.univ-artois.fr command line: runsolver --timestamp -w ROOT/results/node4/watcher-359203-1176923047 -o ROOT/results/node4/solver-359203-1176923047 -C 1800 -W 3600 -M 1800 --output-limit 1,15 /tmp/evaluation/359203-1176923047/PBS4 /tmp/evaluation/359203-1176923047/instance-359203-1176923047.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: 0.99 0.98 0.99 3/77 2836 /proc/meminfo: memFree=1829528/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=1324 CPUtime=0 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 139 0 0 0 0 0 0 0 18 0 1 0 168342425 1355776 121 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134568565 0 0 4096 0 0 0 0 17 1 0 0 /proc/2836/statm: 331 121 87 219 0 108 0 [startup+0.078452 s] /proc/loadavg: 0.99 0.98 0.99 3/77 2836 /proc/meminfo: memFree=1829528/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=1472 CPUtime=0.07 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 241 0 0 0 7 0 0 0 18 0 1 0 168342425 1507328 223 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547259 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 368 223 92 219 0 145 0 Current children cumulated CPU time (s) 0.07 Current children cumulated vsize (KiB) 1472 [startup+0.101452 s] /proc/loadavg: 0.99 0.98 0.99 3/77 2836 /proc/meminfo: memFree=1829528/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=1728 CPUtime=0.09 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 257 0 0 0 9 0 0 0 18 0 1 0 168342425 1769472 239 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135059249 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 432 239 93 219 0 209 0 Current children cumulated CPU time (s) 0.09 Current children cumulated vsize (KiB) 1728 [startup+0.301472 s] /proc/loadavg: 0.99 0.98 0.99 3/77 2836 /proc/meminfo: memFree=1829528/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=2564 CPUtime=0.29 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 395 0 0 0 29 0 0 0 19 0 1 0 168342425 2625536 377 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134590670 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 641 377 93 219 0 418 0 Current children cumulated CPU time (s) 0.29 Current children cumulated vsize (KiB) 2564 [startup+0.701509 s] /proc/loadavg: 0.99 0.98 0.99 3/77 2836 /proc/meminfo: memFree=1829528/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=3780 CPUtime=0.69 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 646 0 0 0 69 0 0 0 23 0 1 0 168342425 3870720 579 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135059249 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 945 579 94 219 0 722 0 Current children cumulated CPU time (s) 0.69 Current children cumulated vsize (KiB) 3780 [startup+1.50159 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1826896/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=6252 CPUtime=1.49 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 999 0 0 0 148 1 0 0 25 0 1 0 168342425 6402048 932 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135059249 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 1563 932 94 219 0 1340 0 Current children cumulated CPU time (s) 1.49 Current children cumulated vsize (KiB) 6252 [startup+3.10174 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1825232/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=7188 CPUtime=3.09 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 1578 0 0 0 307 2 0 0 25 0 1 0 168342425 7360512 1414 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135059249 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 1797 1414 94 219 0 1574 0 Current children cumulated CPU time (s) 3.09 Current children cumulated vsize (KiB) 7188 [startup+6.30104 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1821584/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=12728 CPUtime=6.28 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 2554 0 0 0 625 3 0 0 25 0 1 0 168342425 13033472 2197 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135059249 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 3182 2197 94 219 0 2959 0 Current children cumulated CPU time (s) 6.28 Current children cumulated vsize (KiB) 12728 [startup+12.7017 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1816656/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=22200 CPUtime=12.68 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 3707 0 0 0 1262 6 0 0 25 0 1 0 168342425 22732800 3350 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134549626 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 5550 3350 94 219 0 5327 0 Current children cumulated CPU time (s) 12.68 Current children cumulated vsize (KiB) 22200 [startup+25.5019 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1809168/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=25712 CPUtime=25.48 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 5875 0 0 0 2538 10 0 0 25 0 1 0 168342425 26329088 5133 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547142 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 6428 5133 94 219 0 6205 0 Current children cumulated CPU time (s) 25.48 Current children cumulated vsize (KiB) 25712 [startup+51.1013 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1798288/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=47612 CPUtime=51.08 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 9366 0 0 0 5089 19 0 0 25 0 1 0 168342425 48754688 7855 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135059249 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 11903 7855 94 219 0 11680 0 Current children cumulated CPU time (s) 51.08 Current children cumulated vsize (KiB) 47612 [startup+102.306 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1783632/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=51544 CPUtime=102.26 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 12977 0 0 0 10195 31 0 0 25 0 1 0 168342425 52781056 11466 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547071 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 12886 11466 94 219 0 12663 0 Current children cumulated CPU time (s) 102.26 Current children cumulated vsize (KiB) 51544 [startup+162.302 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1774800/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=88464 CPUtime=162.25 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 15434 0 0 0 16183 42 0 0 25 0 1 0 168342425 90587136 13791 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 135059249 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 22116 13791 94 219 0 21893 0 Current children cumulated CPU time (s) 162.25 Current children cumulated vsize (KiB) 88464 [startup+222.302 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1770576/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=97588 CPUtime=222.24 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 18085 0 0 0 22174 50 0 0 25 0 1 0 168342425 99930112 14707 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547215 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 24397 14707 94 219 0 24174 0 Current children cumulated CPU time (s) 222.24 Current children cumulated vsize (KiB) 97588 [startup+282.301 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1767248/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=99360 CPUtime=282.22 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 18971 0 0 0 28162 60 0 0 25 0 1 0 168342425 101744640 15560 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547071 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 24840 15560 94 219 0 24617 0 Current children cumulated CPU time (s) 282.22 Current children cumulated vsize (KiB) 99360 [startup+342.301 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1763984/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=101844 CPUtime=342.21 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 19748 0 0 0 34152 69 0 0 25 0 1 0 168342425 104288256 16337 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547071 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 25461 16337 94 219 0 25238 0 Current children cumulated CPU time (s) 342.21 Current children cumulated vsize (KiB) 101844 Solver just ended. Dumping a history of the last processes samples [startup+345.501 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1763792/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=101844 CPUtime=345.4 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 19793 0 0 0 34471 69 0 0 25 0 1 0 168342425 104288256 16382 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547089 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 25461 16382 94 219 0 25238 0 Current children cumulated CPU time (s) 345.4 Current children cumulated vsize (KiB) 101844 [startup+351.901 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1763344/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=102260 CPUtime=351.81 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 19912 0 0 0 35111 70 0 0 25 0 1 0 168342425 104714240 16501 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547089 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 25565 16501 94 219 0 25342 0 Current children cumulated CPU time (s) 351.81 Current children cumulated vsize (KiB) 102260 [startup+353.501 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1763280/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=102260 CPUtime=353.41 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 19917 0 0 0 35271 70 0 0 25 0 1 0 168342425 104714240 16506 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134552887 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 25565 16506 94 219 0 25342 0 Current children cumulated CPU time (s) 353.41 Current children cumulated vsize (KiB) 102260 [startup+354.301 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1763152/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=102260 CPUtime=354.2 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 19946 0 0 0 35350 70 0 0 25 0 1 0 168342425 104714240 16535 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547145 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 25565 16535 94 219 0 25342 0 Current children cumulated CPU time (s) 354.2 Current children cumulated vsize (KiB) 102260 [startup+355.101 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1763152/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=102260 CPUtime=355 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 19949 0 0 0 35430 70 0 0 25 0 1 0 168342425 104714240 16538 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547089 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 25565 16538 94 219 0 25342 0 Current children cumulated CPU time (s) 355 Current children cumulated vsize (KiB) 102260 [startup+355.501 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1763152/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=102260 CPUtime=355.4 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 19950 0 0 0 35470 70 0 0 25 0 1 0 168342425 104714240 16539 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547071 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 25565 16539 94 219 0 25342 0 Current children cumulated CPU time (s) 355.4 Current children cumulated vsize (KiB) 102260 [startup+355.601 s] /proc/loadavg: 0.99 0.98 0.99 2/78 2837 /proc/meminfo: memFree=1763152/2055920 swapFree=4153812/4192956 [pid=2836] ppid=2834 vsize=102260 CPUtime=355.5 /proc/2836/stat : 2836 (PBS4) R 2834 2836 994 0 -1 4194304 19950 0 0 0 35480 70 0 0 25 0 1 0 168342425 104714240 16539 18446744073709551615 134512640 135410514 4294956672 18446744073709551615 134547089 0 0 4096 16384 0 0 0 17 1 0 0 /proc/2836/statm: 25565 16539 94 219 0 25342 0 Current children cumulated CPU time (s) 355.5 Current children cumulated vsize (KiB) 102260 Child status: 0 Real time (s): 355.635 CPU time (s): 355.544 CPU user time (s): 354.829 CPU system time (s): 0.714891 CPU usage (%): 99.9745 Max. virtual memory (cumulated for all children) (KiB): 102260 getrusage(RUSAGE_CHILDREN,...) data: user time used= 354.829 system time used= 0.714891 maximum resident set size= 0 integral shared memory size= 0 integral unshared data size= 0 integral unshared stack size= 0 page reclaims= 19965 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= 2471 runsolver used 0.428934 second user time and 0.863868 second system time The end
Begin job on node4 on Wed Apr 18 19:04:07 UTC 2007 IDJOB= 359203 IDBENCH= 1269 IDSOLVER= 157 FILE ID= node4/359203-1176923047 PBS_JOBID= 4595253 Free space on /tmp= 66473 MiB SOLVER NAME= PBS4 2007-03-23 BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/SATUNSAT-SMALLINT/submitted-PB06/namasivayam/tsp/normalized-t3002.11tsp11.1900567135.opb COMMAND LINE= /tmp/evaluation/359203-1176923047/PBS4 /tmp/evaluation/359203-1176923047/instance-359203-1176923047.opb CONVERSION COMMAND LINE= runsolver -w ROOT/results/node4/convwatcher-359203-1176923047 -o ROOT/results/node4/conversion-359203-1176923047 -C 600 -M 1800 PBconversionToLinear /tmp/evaluation/359203-1176923047/instance-359203-1176923047.opb CONVERSION RUNSOLVER STATUS CODE= 0 CONVERSION STATUS CODE= 0 RUNSOLVER COMMAND LINE= runsolver --timestamp -w ROOT/results/node4/watcher-359203-1176923047 -o ROOT/results/node4/solver-359203-1176923047 -C 1800 -W 3600 -M 1800 --output-limit 1,15 /tmp/evaluation/359203-1176923047/PBS4 /tmp/evaluation/359203-1176923047/instance-359203-1176923047.opb META MD5SUM SOLVER= b6c24e28fef9e1efa7891be58ea9e46f MD5SUM BENCH= ae752929c20bdaef808bd42af6910473 RANDOM SEED= 301108858 TIME LIMIT= 1800 seconds MEMORY LIMIT= 1800 MiB Linux node4.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 : 3000.218 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 : 5931.00 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 : 3000.218 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: 1830000 kB Buffers: 26884 kB Cached: 118852 kB SwapCached: 2300 kB Active: 77252 kB Inactive: 92272 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 2055920 kB LowFree: 1830000 kB SwapTotal: 4192956 kB SwapFree: 4153812 kB Dirty: 1232 kB Writeback: 0 kB Mapped: 31288 kB Slab: 41864 kB Committed_AS: 5262688 kB PageTables: 1820 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= 66473 MiB End job on node4 on Wed Apr 18 19:10:03 UTC 2007