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 in four parts:
  1. 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 provide some useful information on the computer.
  2. 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 !
  3. 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 1200 seconds. 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 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    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.
  4. 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.

General information on the benchmark

Namemps-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-mod013.opb
MD5SUMf118194cabf88b58b64a9e7aec087bc0
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 46012422
Optimality of the best value was proved NO
Number of terms in the objective function 1488
Biggest coefficient in the objective function 375272767488
Number of bits for the biggest coefficient in the objective function 39
Sum of the numbers in the objective function 12937590079727
Number of bits of the sum of numbers in the objective function 44
Biggest number in a constraint 375272767488
Number of bits of the biggest number in a constraint 39
Biggest sum of numbers in a constraint 12937590079727
Number of bits of the biggest sum of numbers44
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.05
Number of variables1488
Total number of constraints110
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)48
Number of constraints which are nor clauses,nor cardinality constraints62
Minimum length of a constraint1
Maximum length of a constraint240

Trace number 9975

Launcher Data

LAUNCH ON wulflinc27 THE 2005-09-23 16:19:46 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8730 boxname=wulflinc27 idbench=526 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  f118194cabf88b58b64a9e7aec087bc0  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-mod013.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-mod013.opb
IDLAUNCH: 8730
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.039
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.039
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        941180 kB
Buffers:         11536 kB
Cached:          65032 kB
SwapCached:          0 kB
Active:          45136 kB
Inactive:        34396 kB
HighTotal:      131008 kB
HighFree:        61544 kB
LowTotal:       903652 kB
LowFree:        879636 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8452 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:21:39 (client local time) WITH STATUS 1 IN 111.949 SECONDS
stats: 8730 7 111.949 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 96589201
c big objective detected
c trying from 0 to 511
c CONFLICT during preprocess 
c trying from 512 to 1023

	Unexpected exception :
	St9bad_alloc

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21539915 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 373 2 364 364 0 9 0
[pid=9000] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-mod013.opb

[startup+10.0016 s]
Raw data (loadavg): 0.93 0.95 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 29019 0 0 0 921 68 0 0 25 0 1 0 21539915 95567872 17829 4294967295 134512640 135987407 3221224560 3221064368 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9000/statm): 23332 17830 364 364 0 22968 0
[pid=9000] vsize: 93328
Current children cumulated CPU time (s) 9.89
Current children cumulated vsize (Kb) 93328

[startup+20.0014 s]
Raw data (loadavg): 0.94 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 58705 0 0 0 1856 130 0 0 25 0 1 0 21539915 191258624 36289 4294967295 134512640 135987407 3221224560 3221086012 135480633 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9000/statm): 46694 36289 364 364 0 46330 0
[pid=9000] vsize: 186776
Current children cumulated CPU time (s) 19.86
Current children cumulated vsize (Kb) 186776

[startup+30.0023 s]
Raw data (loadavg): 0.95 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 89380 0 0 0 2792 190 0 0 25 0 1 0 21539915 274558976 57027 4294967295 134512640 135987407 3221224560 3221159564 135499900 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9000/statm): 67031 57027 364 364 0 66667 0
[pid=9000] vsize: 268124
Current children cumulated CPU time (s) 29.82
Current children cumulated vsize (Kb) 268124

[startup+40.0021 s]
Raw data (loadavg): 0.95 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 115327 0 0 0 3735 245 0 0 25 0 1 0 21539915 346796032 68951 4294967295 134512640 135987407 3221224560 3221223248 134788493 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 84667 68951 364 364 0 84303 0
[pid=9000] vsize: 338668
Current children cumulated CPU time (s) 39.8
Current children cumulated vsize (Kb) 338668

[startup+50.002 s]
Raw data (loadavg): 0.96 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 142293 0 0 0 4661 312 0 0 25 0 1 0 21539915 439926784 95812 4294967295 134512640 135987407 3221224560 3220815144 134887257 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 107404 95812 364 364 0 107040 0
[pid=9000] vsize: 429616
Current children cumulated CPU time (s) 49.73
Current children cumulated vsize (Kb) 429616

[startup+60.0028 s]
Raw data (loadavg): 0.97 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 177549 0 0 0 5585 386 0 0 25 0 1 0 21539915 552595456 111428 4294967295 134512640 135987407 3221224560 3220811116 135499903 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 134911 111428 364 364 0 134547 0
[pid=9000] vsize: 539644
Current children cumulated CPU time (s) 59.71
Current children cumulated vsize (Kb) 539644

[startup+70.0036 s]
Raw data (loadavg): 0.97 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 187775 0 0 0 6564 407 0 0 25 0 1 0 21539915 556380160 121405 4294967295 134512640 135987407 3221224560 3221122636 135480487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 135835 121405 364 364 0 135471 0
[pid=9000] vsize: 543340
Current children cumulated CPU time (s) 69.71
Current children cumulated vsize (Kb) 543340

[startup+80.0044 s]
Raw data (loadavg): 0.98 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 222075 0 0 0 7491 480 0 0 25 0 1 0 21539915 664883200 130918 4294967295 134512640 135987407 3221224560 3220743152 134560572 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 162325 130918 364 364 0 161961 0
[pid=9000] vsize: 649300
Current children cumulated CPU time (s) 79.71
Current children cumulated vsize (Kb) 649300

[startup+90.0042 s]
Raw data (loadavg): 0.98 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 237223 0 0 0 8457 511 0 0 25 0 1 0 21539915 704233472 145857 4294967295 134512640 135987407 3221224560 3220720252 134669184 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 171932 145857 364 364 0 171568 0
[pid=9000] vsize: 687728
Current children cumulated CPU time (s) 89.68
Current children cumulated vsize (Kb) 687728

[startup+100.004 s]
Raw data (loadavg): 0.98 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 254596 0 0 0 9415 551 0 0 25 0 1 0 21539915 757166080 163009 4294967295 134512640 135987407 3221224560 3221190800 134877628 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 184855 163009 364 364 0 184491 0
[pid=9000] vsize: 739420
Current children cumulated CPU time (s) 99.66
Current children cumulated vsize (Kb) 739420

[startup+110.005 s]
Raw data (loadavg): 0.98 0.96 0.97 2/55 9000
Raw data (/proc/9000/stat): 9000 (pb2sat) R 8999 9000 4005 0 -1 0 262486 0 0 0 10394 570 0 0 25 0 1 0 21539915 680185856 153862 4294967295 134512640 135987407 3221224560 3221222832 134882858 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9000/statm): 166061 153862 364 364 0 165697 0
[pid=9000] vsize: 664244
Current children cumulated CPU time (s) 109.64
Current children cumulated vsize (Kb) 664244
One traced child (pid=9000) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 112.305
CPU time (s): 111.949
CPU user time (s): 105.935
CPU system time (s): 6.01408
CPU usage (%): 99.6826
Max. virtual memory (cumulated for all children) (Kb): 739420

Verifier Data

ERROR: no interpretation found !