Trace number 432518

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 3.0.17? (MO) 288.423 288.608

General information on the benchmark

Namenormalized-PB06/OPT-MEDINT/mps-v2-20-10/plato.asu.edu/
pub/milp/normalized-mps-v2-20-10-neos9.opb
MD5SUM9b565ffd2f62b11d1859d685ea38235b
Bench CategoryOPT-MEDINT (optimisation, medium integers)
Best result obtained on this benchmark
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of variables874498
Total number of constraints110909
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)87
Number of constraints which are nor clauses,nor cardinality constraints110822
Minimum length of a constraint11
Maximum length of a constraint14080
Number of terms in the objective function 198658
Biggest coefficient in the objective function 1024
Number of bits for the biggest coefficient in the objective function 11
Sum of the numbers in the objective function 38727219
Number of bits of the sum of numbers in the objective function 26
Biggest number in a constraint 30720
Number of bits of the biggest number in a constraint 15
Biggest sum of numbers in a constraint 38727219
Number of bits of the biggest sum of numbers26
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data (download as text)

0.00/0.00	c bsolo beta version 3.0.17 - 27/04/2007 : 1600 GMT
0.00/0.00	c Developed by Vasco Manquinho IST/UTL - INESC-ID
0.00/0.00	c type "bsolo -h" for help
0.00/0.00	c Time Limit set via environment variable PBTIMEOUT to 1800
0.00/0.00	c Memory Limit set to 1800 MB
0.00/0.00	c Instance file /tmp/evaluation/432518-1177944467/instance-432518-1177944467.opb
0.00/0.00	c File size is 45310295 bytes.
0.39/0.43	c Coefficients are big enough for not using lower bounding.
11.57/11.67	c Highest Coefficient sum: 3.87272e+07
11.57/11.67	c Parsing was ok!!
11.57/11.67	c Total parsing time: 11.651 s
12.28/12.39	c Var: 874498 Constr: 118637 0/87/118550 Lit: 5244889 Watch. Lit: 2573983
12.28/12.39	c Obj. Vars: 198658 (22.7168 % of total variables)
191.72/191.89	c Pre-processing Time: 191.816 s
288.12/288.30	c    Confl   Vars     Ctrs     Lits  LPC   W.Lits     Max Learnt Conf/s Time
288.12/288.30	c        0 874498   118637  5244889   44  2631069  500000      0      0 191.82
288.12/288.30	c      100 874498   118737  6635565   55  2631921  550001    100      0 193.14
288.12/288.30	c      250 874498   118887  8720940   73  2632223  605002    250      1 194.43
288.12/288.30	c      475 874498   119112 11764961   98  2632658  665503    475      2 196.25
288.12/288.30	c      814 874498   119451 16478017  137  2633336  732054    814      4 199.40
288.12/288.30	c     1323 874498   119960 23534723  196  2634350  805260   1323      6 204.52
288.12/288.30	c     2087 874498   120724 34114696  282  2635887  885787   2087      9 212.38
288.12/288.30	c     3233 874498   121870 49936676  409  2638191  974366   3233     14 223.83
288.12/288.30	c     4955 874498   123592 73806375  597  2641649  500000   4955     20 241.58
288.12/288.30	c     7540 874498   126177 109546896  868  2646820  550001   7540     27 271.96
288.12/288.30	c Caught signal: 15
288.12/288.30	c  Rst    Confl    NCB      Dec     Ctrs     Lits Learnt Conf/s Time
288.12/288.30	c    9     8832     29   147653   127469 127209586   8832     30 288.12
288.12/288.30	s UNKNOWN
288.12/288.30	c Total time: 288.119 s

Verifier Data (download as text)

ERROR: no interpretation found !

Watcher Data (download as text)

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

command line: runsolver --timestamp -w ROOT/results/node70/watcher-432518-1177944467 -o ROOT/results/node70/solver-432518-1177944467 -C 1800 -W 3600 -M 1800 --output-limit 1,15 bsolo3.0.17 -m1800 /tmp/evaluation/432518-1177944467/instance-432518-1177944467.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: 1.31 1.05 0.83 3/64 16311
/proc/meminfo: memFree=1573376/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=55988 CPUtime=0
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 363 0 0 0 0 0 0 0 18 0 1 0 233984542 57331712 333 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 8849019 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 13997 333 279 324 0 2004 0

[startup+0.0493489 s]
/proc/loadavg: 1.31 1.05 0.83 3/64 16311
/proc/meminfo: memFree=1573376/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=57728 CPUtime=0.04
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 870 0 0 0 4 0 0 0 18 0 1 0 233984542 59113472 800 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 4294960144 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 14432 800 351 324 0 2439 0
Current children cumulated CPU time (s) 0.04
Current children cumulated vsize (KiB) 57728

[startup+0.101353 s]
/proc/loadavg: 1.31 1.05 0.83 3/64 16311
/proc/meminfo: memFree=1573376/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=59712 CPUtime=0.09
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 1550 0 0 0 9 0 0 0 18 0 1 0 233984542 61145088 1352 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134535879 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 14928 1356 426 324 0 2935 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 59712

[startup+0.301374 s]
/proc/loadavg: 1.31 1.05 0.83 3/64 16311
/proc/meminfo: memFree=1573376/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=65984 CPUtime=0.29
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 3684 0 0 0 28 1 0 0 19 0 1 0 233984542 67567616 3232 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 4294960144 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 16496 3233 697 324 0 4503 0
Current children cumulated CPU time (s) 0.29
Current children cumulated vsize (KiB) 65984

[startup+0.701413 s]
/proc/loadavg: 1.31 1.05 0.83 3/64 16311
/proc/meminfo: memFree=1573376/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=68660 CPUtime=0.69
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 7121 0 0 0 67 2 0 0 22 0 1 0 233984542 70307840 6163 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 8849019 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 17165 6163 1244 324 0 5172 0
Current children cumulated CPU time (s) 0.69
Current children cumulated vsize (KiB) 68660

[startup+1.50149 s]
/proc/loadavg: 1.28 1.05 0.83 2/65 16312
/proc/meminfo: memFree=1547832/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=89296 CPUtime=1.49
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 14044 0 0 0 144 5 0 0 25 0 1 0 233984542 91439104 12075 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 4294960144 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 22324 12075 2151 324 0 10331 0
Current children cumulated CPU time (s) 1.49
Current children cumulated vsize (KiB) 89296

[startup+3.10266 s]
/proc/loadavg: 1.28 1.05 0.83 2/65 16312
/proc/meminfo: memFree=1515192/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=130984 CPUtime=3.08
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 27940 0 0 0 296 12 0 0 25 0 1 0 233984542 134127616 23818 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134524167 0 0 4096 16384 0 0 0 17 0 0 0
/proc/16311/statm: 32746 23818 3835 324 0 20753 0
Current children cumulated CPU time (s) 3.08
Current children cumulated vsize (KiB) 130984

[startup+6.30197 s]
/proc/loadavg: 1.26 1.05 0.83 2/65 16312
/proc/meminfo: memFree=1477304/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=151472 CPUtime=6.28
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 37202 0 0 0 611 17 0 0 25 0 1 0 233984542 155107328 31730 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 8849019 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 37868 31730 6625 324 0 25875 0
Current children cumulated CPU time (s) 6.28
Current children cumulated vsize (KiB) 151472

[startup+12.7016 s]
/proc/loadavg: 1.24 1.05 0.83 2/65 16312
/proc/meminfo: memFree=1366712/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=280672 CPUtime=12.67
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 82844 0 0 0 1231 36 0 0 25 0 1 0 233984542 287408128 65920 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 4294960144 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 70168 65920 303 324 0 69238 0
Current children cumulated CPU time (s) 12.67
Current children cumulated vsize (KiB) 280672

[startup+25.5019 s]
/proc/loadavg: 1.20 1.05 0.83 2/65 16312
/proc/meminfo: memFree=1214520/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=377188 CPUtime=25.47
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 108681 0 0 0 2443 104 0 0 25 0 1 0 233984542 386240512 90048 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 4294960144 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 94297 90048 305 324 0 93367 0
Current children cumulated CPU time (s) 25.47
Current children cumulated vsize (KiB) 377188

[startup+51.1014 s]
/proc/loadavg: 1.12 1.04 0.84 2/65 16312
/proc/meminfo: memFree=1227512/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=364260 CPUtime=51.05
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 129186 0 0 0 4972 133 0 0 25 0 1 0 233984542 373002240 86816 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134540677 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 91065 86816 305 324 0 90135 0
Current children cumulated CPU time (s) 51.05
Current children cumulated vsize (KiB) 364260

[startup+102.306 s]
/proc/loadavg: 1.05 1.03 0.84 2/65 16312
/proc/meminfo: memFree=1227576/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=364260 CPUtime=102.24
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 129186 0 0 0 10091 133 0 0 25 0 1 0 233984542 373002240 86816 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134540690 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 91065 86816 305 324 0 90135 0
Current children cumulated CPU time (s) 102.24
Current children cumulated vsize (KiB) 364260

[startup+162.301 s]
/proc/loadavg: 1.02 1.02 0.85 2/65 16312
/proc/meminfo: memFree=1227512/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=364260 CPUtime=162.23
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 129186 0 0 0 16089 134 0 0 25 0 1 0 233984542 373002240 86816 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134540690 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 91065 86816 305 324 0 90135 0
Current children cumulated CPU time (s) 162.23
Current children cumulated vsize (KiB) 364260

[startup+222.301 s]
/proc/loadavg: 1.00 1.02 0.85 2/65 16312
/proc/meminfo: memFree=762424/2055920 swapFree=4183812/4192956
[pid=16311] ppid=16309 vsize=831628 CPUtime=222.21
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 274826 0 0 0 22030 191 0 0 25 0 1 0 233984542 851587072 203711 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134547395 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 207907 203711 309 324 0 206977 0
Current children cumulated CPU time (s) 222.21
Current children cumulated vsize (KiB) 831628

[startup+282.301 s]
/proc/loadavg: 1.07 1.03 0.87 2/65 16312
/proc/meminfo: memFree=15288/2055920 swapFree=4183764/4192956
[pid=16311] ppid=16309 vsize=1762360 CPUtime=282.13
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 552703 0 0 0 27917 296 0 0 25 0 1 0 233984542 1804656640 436394 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 8531060 0 0 4096 16384 0 0 0 17 0 0 0
/proc/16311/statm: 440590 436394 309 324 0 439660 0
Current children cumulated CPU time (s) 282.13
Current children cumulated vsize (KiB) 1762360



Maximum VSize exceeded: sending SIGTERM then SIGKILL

[startup+288.302 s]
/proc/loadavg: 1.07 1.03 0.87 2/65 16312
/proc/meminfo: memFree=14904/2055920 swapFree=4183764/4192956
[pid=16311] ppid=16309 vsize=1844208 CPUtime=288.12
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194304 577143 0 0 0 28506 306 0 0 25 0 1 0 233984542 1888468992 456856 18446744073709551615 134512640 135840783 4294956688 18446744073709551615 134550919 0 0 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 461052 456856 309 324 0 460122 0
Current children cumulated CPU time (s) 288.12
Current children cumulated vsize (KiB) 1844208

Sending SIGTERM to process tree (bottom up)
Sleeping 2 seconds

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

[startup+288.602 s]
/proc/loadavg: 1.07 1.03 0.87 2/65 16312
/proc/meminfo: memFree=14904/2055920 swapFree=4183764/4192956
[pid=16311] ppid=16309 vsize=0 CPUtime=288.41
/proc/16311/stat : 16311 (bsolo3.0.17) R 16309 16311 16104 0 -1 4194308 577147 0 0 0 28507 334 0 0 25 0 1 0 233984542 0 0 18446744073709551615 0 0 0 0 0 0 16384 4096 16384 0 0 0 17 1 0 0
/proc/16311/statm: 0 0 0 0 0 0 0
Current children cumulated CPU time (s) 288.41
Current children cumulated vsize (KiB) 0

Child status: 15
Real time (s): 288.608
CPU time (s): 288.423
CPU user time (s): 285.074
CPU system time (s): 3.34949
CPU usage (%): 99.936
Max. virtual memory (cumulated for all children) (KiB): 1844208

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 285.074
system time used= 3.34949
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 577147
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= 13
involuntary context switches= 886

runsolver used 0.205968 second user time and 0.608907 second system time

The end

Launcher Data (download as text)

Begin job on node70 on Mon Apr 30 14:47:52 UTC 2007

IDJOB= 432518
IDBENCH= 1505
IDSOLVER= 199
FILE ID= node70/432518-1177944467

PBS_JOBID= 4727807

Free space on /tmp= 66515 MiB

SOLVER NAME= bsolo 3.0.17
BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/OPT-MEDINT/mps-v2-20-10/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos9.opb
COMMAND LINE= bsolo3.0.17 -m1800 /tmp/evaluation/432518-1177944467/instance-432518-1177944467.opb            
RUNSOLVER COMMAND LINE= runsolver  --timestamp  -w ROOT/results/node70/watcher-432518-1177944467 -o ROOT/results/node70/solver-432518-1177944467 -C 1800 -W 3600 -M 1800 --output-limit 1,15  bsolo3.0.17 -m1800 /tmp/evaluation/432518-1177944467/instance-432518-1177944467.opb            

META MD5SUM SOLVER= c9b15312c639dd71a11a1e3ca1b27020
MD5SUM BENCH=  9b565ffd2f62b11d1859d685ea38235b

RANDOM SEED= 938537949

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 1800 MiB

Linux node70.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	: 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		: 3000.218
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:       1573912 kB
Buffers:         32916 kB
Cached:         371552 kB
SwapCached:       3192 kB
Active:         101612 kB
Inactive:       312988 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1573912 kB
SwapTotal:     4192956 kB
SwapFree:      4183812 kB
Dirty:           50976 kB
Writeback:           0 kB
Mapped:          16080 kB
Slab:            53468 kB
Committed_AS:  3569408 kB
PageTables:       1400 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= 66515 MiB

End job on node70 on Mon Apr 30 14:52:43 UTC 2007