Solver Name | Answer | CPU time | Wall clock time |
---|---|---|---|
Pueblo 1.4 | UNSAT | 309.717 | 309.792 |
Name | normalized-PB06/SATUNSAT-SMALLINT/submitted-PB06/ namasivayam/tsp/normalized-t3002.11tsp11.1900565534.opb |
MD5SUM | 0fea7c185f4d6e2091fba763db8ccbcc |
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 | 42.7635 |
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 | 685 |
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 Pueblo version 1.4 (September 2005) 0.00/0.00 c Developed @ University of Michigan, Ann Arbor, MI 0.00/0.00 c by Hossein Sheini 0.00/0.03 c starting to Solve 0.00/0.03 c #variables read: 231 - #constraints read: 2707 309.62/309.79 c total time : 309.75 s 309.62/309.79 s UNSATISFIABLE
ERROR: no interpretation found !
/tmp/evaluation/359407-1176928691/instance-359407-1176928691.opb is already a linear file
runsolver version 3.2.2 (c) roussel@cril.univ-artois.fr command line: runsolver --timestamp -w ROOT/results/node34/watcher-359407-1176928691 -o ROOT/results/node34/solver-359407-1176928691 -C 1800 -W 3600 -M 1800 --output-limit 1,15 Pueblo /tmp/evaluation/359407-1176928691/instance-359407-1176928691.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 0.99 0.99 3/77 13195 /proc/meminfo: memFree=1762040/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=2552 CPUtime=0 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 266 0 0 0 0 0 0 0 18 0 1 0 140784590 2613248 236 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 8187607 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 638 236 199 16 0 77 0 [startup+0.102486 s] /proc/loadavg: 0.99 0.99 0.99 3/77 13195 /proc/meminfo: memFree=1762040/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=2952 CPUtime=0.09 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 394 0 0 0 9 0 0 0 18 0 1 0 140784590 3022848 364 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134557367 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 738 364 205 16 0 177 0 Current children cumulated CPU time (s) 0.09 Current children cumulated vsize (KiB) 2952 [startup+0.201494 s] /proc/loadavg: 0.99 0.99 0.99 3/77 13195 /proc/meminfo: memFree=1762040/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=3216 CPUtime=0.19 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 438 0 0 0 19 0 0 0 18 0 1 0 140784590 3293184 408 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134532125 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 804 408 205 16 0 243 0 Current children cumulated CPU time (s) 0.19 Current children cumulated vsize (KiB) 3216 [startup+0.301501 s] /proc/loadavg: 0.99 0.99 0.99 3/77 13195 /proc/meminfo: memFree=1762040/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=3344 CPUtime=0.29 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 477 0 0 0 29 0 0 0 19 0 1 0 140784590 3424256 447 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134559548 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 836 447 205 16 0 275 0 Current children cumulated CPU time (s) 0.29 Current children cumulated vsize (KiB) 3344 [startup+0.701533 s] /proc/loadavg: 0.99 0.99 0.99 3/77 13195 /proc/meminfo: memFree=1762040/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=3608 CPUtime=0.69 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 531 0 0 0 69 0 0 0 22 0 1 0 140784590 3694592 501 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134556215 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 902 501 205 16 0 341 0 Current children cumulated CPU time (s) 0.69 Current children cumulated vsize (KiB) 3608 [startup+1.5016 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1760752/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=3740 CPUtime=1.49 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 573 0 0 0 149 0 0 0 25 0 1 0 140784590 3829760 543 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134527833 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 935 543 205 16 0 374 0 Current children cumulated CPU time (s) 1.49 Current children cumulated vsize (KiB) 3740 [startup+3.10172 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1760304/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=4100 CPUtime=3.09 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 664 0 0 0 309 0 0 0 25 0 1 0 140784590 4198400 634 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134558934 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1025 634 205 16 0 464 0 Current children cumulated CPU time (s) 3.09 Current children cumulated vsize (KiB) 4100 [startup+6.30198 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1759856/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=4344 CPUtime=6.29 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 722 0 0 0 629 0 0 0 25 0 1 0 140784590 4448256 692 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134522733 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1086 692 205 16 0 525 0 Current children cumulated CPU time (s) 6.29 Current children cumulated vsize (KiB) 4344 [startup+12.7015 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1759480/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=4600 CPUtime=12.69 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 797 0 0 0 1269 0 0 0 25 0 1 0 140784590 4710400 767 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134527726 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1150 767 205 16 0 589 0 Current children cumulated CPU time (s) 12.69 Current children cumulated vsize (KiB) 4600 [startup+25.5015 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1759160/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=4912 CPUtime=25.48 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 876 0 0 0 2548 0 0 0 25 0 1 0 140784590 5029888 846 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134527824 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1228 846 205 16 0 667 0 Current children cumulated CPU time (s) 25.48 Current children cumulated vsize (KiB) 4912 [startup+51.1015 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1758584/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=5488 CPUtime=51.08 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1015 0 0 0 5107 1 0 0 25 0 1 0 140784590 5619712 985 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134557371 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1372 985 205 16 0 811 0 Current children cumulated CPU time (s) 51.08 Current children cumulated vsize (KiB) 5488 [startup+102.302 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1758200/2055920 swapFree=4157432/4192956 [pid=13195] ppid=13193 vsize=5808 CPUtime=102.27 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1104 0 0 0 10226 1 0 0 25 0 1 0 140784590 5947392 1074 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134527715 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1452 1074 205 16 0 891 0 Current children cumulated CPU time (s) 102.27 Current children cumulated vsize (KiB) 5808 [startup+162.301 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1757688/2055920 swapFree=4157496/4192956 [pid=13195] ppid=13193 vsize=6348 CPUtime=162.25 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1237 0 0 0 16223 2 0 0 25 0 1 0 140784590 6500352 1207 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134527812 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1587 1207 205 16 0 1026 0 Current children cumulated CPU time (s) 162.25 Current children cumulated vsize (KiB) 6348 [startup+222.305 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1757240/2055920 swapFree=4157496/4192956 [pid=13195] ppid=13193 vsize=6876 CPUtime=222.24 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1358 0 0 0 22222 2 0 0 25 0 1 0 140784590 7041024 1325 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134522755 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1719 1325 205 16 0 1158 0 Current children cumulated CPU time (s) 222.24 Current children cumulated vsize (KiB) 6876 [startup+282.302 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756920/2055920 swapFree=4157496/4192956 [pid=13195] ppid=13193 vsize=7148 CPUtime=282.23 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1446 0 0 0 28220 3 0 0 25 0 1 0 140784590 7319552 1411 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134528096 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1787 1411 205 16 0 1226 0 Current children cumulated CPU time (s) 282.23 Current children cumulated vsize (KiB) 7148 Solver just ended. Dumping a history of the last processes samples [startup+294.402 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756856/2055920 swapFree=4157560/4192956 [pid=13195] ppid=13193 vsize=7220 CPUtime=294.32 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1450 0 0 0 29429 3 0 0 25 0 1 0 140784590 7393280 1415 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134528346 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1805 1415 205 16 0 1244 0 Current children cumulated CPU time (s) 294.32 Current children cumulated vsize (KiB) 7220 [startup+300.801 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756792/2055920 swapFree=4157560/4192956 [pid=13195] ppid=13193 vsize=7272 CPUtime=300.72 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1474 0 0 0 30069 3 0 0 25 0 1 0 140784590 7446528 1439 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134519889 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1818 1439 205 16 0 1257 0 Current children cumulated CPU time (s) 300.72 Current children cumulated vsize (KiB) 7272 [startup+304.002 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756792/2055920 swapFree=4157560/4192956 [pid=13195] ppid=13193 vsize=7272 CPUtime=303.92 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1474 0 0 0 30389 3 0 0 25 0 1 0 140784590 7446528 1439 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134527441 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1818 1439 205 16 0 1257 0 Current children cumulated CPU time (s) 303.92 Current children cumulated vsize (KiB) 7272 [startup+307.202 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756792/2055920 swapFree=4157560/4192956 [pid=13195] ppid=13193 vsize=7260 CPUtime=307.12 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1474 0 0 0 30709 3 0 0 25 0 1 0 140784590 7434240 1439 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134528589 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1815 1439 205 16 0 1254 0 Current children cumulated CPU time (s) 307.12 Current children cumulated vsize (KiB) 7260 [startup+308.802 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756792/2055920 swapFree=4157560/4192956 [pid=13195] ppid=13193 vsize=7232 CPUtime=308.72 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1474 0 0 0 30869 3 0 0 25 0 1 0 140784590 7405568 1435 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134527726 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1808 1435 205 16 0 1247 0 Current children cumulated CPU time (s) 308.72 Current children cumulated vsize (KiB) 7232 [startup+309.206 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756792/2055920 swapFree=4157560/4192956 [pid=13195] ppid=13193 vsize=7232 CPUtime=309.12 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1474 0 0 0 30909 3 0 0 25 0 1 0 140784590 7405568 1435 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134527740 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1808 1435 205 16 0 1247 0 Current children cumulated CPU time (s) 309.12 Current children cumulated vsize (KiB) 7232 [startup+309.601 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756792/2055920 swapFree=4157560/4192956 [pid=13195] ppid=13193 vsize=7232 CPUtime=309.52 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1474 0 0 0 30949 3 0 0 25 0 1 0 140784590 7405568 1435 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134532856 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1808 1435 205 16 0 1247 0 Current children cumulated CPU time (s) 309.52 Current children cumulated vsize (KiB) 7232 [startup+309.701 s] /proc/loadavg: 0.99 0.99 0.99 2/78 13196 /proc/meminfo: memFree=1756792/2055920 swapFree=4157560/4192956 [pid=13195] ppid=13193 vsize=7232 CPUtime=309.62 /proc/13195/stat : 13195 (Pueblo) R 13193 13195 11604 0 -1 4194304 1474 0 0 0 30959 3 0 0 25 0 1 0 140784590 7405568 1435 18446744073709551615 134512640 134579096 4294956672 18446744073709551615 134528392 0 0 4096 0 0 0 0 17 1 0 0 /proc/13195/statm: 1808 1435 205 16 0 1247 0 Current children cumulated CPU time (s) 309.62 Current children cumulated vsize (KiB) 7232 Child status: 20 Real time (s): 309.792 CPU time (s): 309.717 CPU user time (s): 309.68 CPU system time (s): 0.036994 CPU usage (%): 99.9757 Max. virtual memory (cumulated for all children) (KiB): 7348 getrusage(RUSAGE_CHILDREN,...) data: user time used= 309.68 system time used= 0.036994 maximum resident set size= 0 integral shared memory size= 0 integral unshared data size= 0 integral unshared stack size= 0 page reclaims= 1481 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= 610 runsolver used 0.379942 second user time and 0.704892 second system time The end
Begin job on node34 on Wed Apr 18 20:38:11 UTC 2007 IDJOB= 359407 IDBENCH= 1289 IDSOLVER= 165 FILE ID= node34/359407-1176928691 PBS_JOBID= 4605641 Free space on /tmp= 66411 MiB SOLVER NAME= Pueblo 1.4 BENCH NAME= HOME/pub/bench/PB06//final/normalized-PB06/SATUNSAT-SMALLINT/submitted-PB06/namasivayam/tsp/normalized-t3002.11tsp11.1900565534.opb COMMAND LINE= Pueblo /tmp/evaluation/359407-1176928691/instance-359407-1176928691.opb CONVERSION COMMAND LINE= runsolver -w ROOT/results/node34/convwatcher-359407-1176928691 -o ROOT/results/node34/conversion-359407-1176928691 -C 600 -M 1800 PBconversionToLinear /tmp/evaluation/359407-1176928691/instance-359407-1176928691.opb CONVERSION RUNSOLVER STATUS CODE= 0 CONVERSION STATUS CODE= 0 RUNSOLVER COMMAND LINE= runsolver --timestamp -w ROOT/results/node34/watcher-359407-1176928691 -o ROOT/results/node34/solver-359407-1176928691 -C 1800 -W 3600 -M 1800 --output-limit 1,15 Pueblo /tmp/evaluation/359407-1176928691/instance-359407-1176928691.opb META MD5SUM SOLVER= 9ebec3e8d890fdeefad01654ad9b68b7 MD5SUM BENCH= 0fea7c185f4d6e2091fba763db8ccbcc RANDOM SEED= 760651997 TIME LIMIT= 1800 seconds MEMORY LIMIT= 1800 MiB Linux node34.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 : 3000.236 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 : 3000.236 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: 1762512 kB Buffers: 29408 kB Cached: 189648 kB SwapCached: 2896 kB Active: 69260 kB Inactive: 173900 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 2055920 kB LowFree: 1762512 kB SwapTotal: 4192956 kB SwapFree: 4157432 kB Dirty: 2352 kB Writeback: 0 kB Mapped: 31068 kB Slab: 35580 kB Committed_AS: 423856 kB PageTables: 1976 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= 66411 MiB End job on node34 on Wed Apr 18 20:43:21 UTC 2007