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-v2-13-7/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-neos2.opb
MD5SUMb7400535246fc2c2b54a52ae77322df5
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 84
Biggest coefficient in the objective function 1048576
Number of bits for the biggest coefficient in the objective function 21
Sum of the numbers in the objective function 8388604
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 2396687647113216000
Number of bits of the biggest number in a constraint 62
Biggest sum of numbers in a constraint 282492798299765243904
Number of bits of the biggest sum of numbers68
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables21894
Total number of constraints2173
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)1053
Number of constraints which are nor clauses,nor cardinality constraints1120
Minimum length of a constraint1
Maximum length of a constraint3188

Trace number 10558

Launcher Data

LAUNCH ON wulflinc2 THE 2005-09-23 19:00:01 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9317 boxname=wulflinc2 idbench=1113 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  b7400535246fc2c2b54a52ae77322df5  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-neos2.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-neos2.opb
IDLAUNCH: 9317
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.261
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	: 2
cpu MHz		: 451.261
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	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        891260 kB
Buffers:         17644 kB
Cached:         105912 kB
SwapCached:          0 kB
Active:          47844 kB
Inactive:        78604 kB
HighTotal:      131008 kB
HighFree:        29008 kB
LowTotal:       903652 kB
LowFree:        862252 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11348 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 19:01:40 (client local time) WITH STATUS 1 IN 98.1621 SECONDS
stats: 9317 7 98.1621 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified

	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/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 22558393 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/11404/statm): 373 2 364 364 0 9 0
[pid=11404] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-13-7-neos2.opb

[startup+10.002 s]
Raw data (loadavg): 0.93 0.97 0.97 2/55 11459
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 30795 0 0 0 925 70 0 0 25 0 1 0 22558393 99307520 19602 4294967295 134512640 135987407 3221224560 3220685788 135482121 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 24245 19602 364 364 0 23881 0
[pid=11404] vsize: 96980
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 96980

[startup+20.0027 s]
Raw data (loadavg): 0.94 0.97 0.97 2/55 11459
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 61916 0 0 0 1862 130 0 0 25 0 1 0 22558393 196636672 39154 4294967295 134512640 135987407 3221224560 3220686112 134537562 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 48007 39154 364 364 0 47643 0
[pid=11404] vsize: 192028
Current children cumulated CPU time (s) 19.92
Current children cumulated vsize (Kb) 192028

[startup+30.0034 s]
Raw data (loadavg): 0.95 0.97 0.97 2/55 11459
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 95334 0 0 0 2799 188 0 0 25 0 1 0 22558393 382291968 61536 4294967295 134512640 135987407 3221224560 3220686832 134887487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 93333 61540 364 364 0 92969 0
[pid=11404] vsize: 373332
Current children cumulated CPU time (s) 29.87
Current children cumulated vsize (Kb) 373332

[startup+40.0031 s]
Raw data (loadavg): 0.95 0.97 0.97 2/55 11459
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 123601 0 0 0 3744 242 0 0 25 0 1 0 22558393 389840896 77288 4294967295 134512640 135987407 3221224560 3220686556 134892452 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 95176 77288 364 364 0 94812 0
[pid=11404] vsize: 380704
Current children cumulated CPU time (s) 39.86
Current children cumulated vsize (Kb) 380704

[startup+50.0038 s]
Raw data (loadavg): 0.96 0.97 0.97 2/55 11459
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 168833 0 0 0 4657 324 0 0 25 0 1 0 22558393 530849792 100535 4294967295 134512640 135987407 3221224560 3220687168 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 129602 100536 364 364 0 129238 0
[pid=11404] vsize: 518408
Current children cumulated CPU time (s) 49.81
Current children cumulated vsize (Kb) 518408

[startup+60.0035 s]
Raw data (loadavg): 0.97 0.97 0.97 2/55 11461
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 188275 0 0 0 5616 363 0 0 20 0 1 0 22558393 558829568 119716 4294967295 134512640 135987407 3221224560 3220690864 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 136433 119717 364 364 0 136069 0
[pid=11404] vsize: 545732
Current children cumulated CPU time (s) 59.79
Current children cumulated vsize (Kb) 545732

[startup+70.0043 s]
Raw data (loadavg): 0.97 0.97 0.97 2/55 11461
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 229396 0 0 0 6531 447 0 0 25 0 1 0 22558393 683417600 136038 4294967295 134512640 135987407 3221224560 3220686780 135482121 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 166850 136038 364 364 0 166486 0
[pid=11404] vsize: 667400
Current children cumulated CPU time (s) 69.78
Current children cumulated vsize (Kb) 667400

[startup+80.005 s]
Raw data (loadavg): 0.98 0.97 0.97 2/55 11463
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 245588 0 0 0 7497 480 0 0 25 0 1 0 22558393 740356096 152013 4294967295 134512640 135987407 3221224560 3220686496 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 180751 152013 364 364 0 180387 0
[pid=11404] vsize: 723004
Current children cumulated CPU time (s) 79.77
Current children cumulated vsize (Kb) 723004

[startup+90.0046 s]
Raw data (loadavg): 0.98 0.97 0.97 2/55 11465
Raw data (/proc/11404/stat): 11404 (pb2sat) R 11403 11404 4070 0 -1 0 265204 0 0 0 8457 518 0 0 25 0 1 0 22558393 770048000 170934 4294967295 134512640 135987407 3221224560 3220688460 135482121 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/11404/statm): 188000 170934 364 364 0 187636 0
[pid=11404] vsize: 752000
Current children cumulated CPU time (s) 89.75
Current children cumulated vsize (Kb) 752000
One traced child (pid=11404) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 98.4232
CPU time (s): 98.1621
CPU user time (s): 92.5859
CPU system time (s): 5.57615
CPU usage (%): 99.7347
Max. virtual memory (cumulated for all children) (Kb): 752000

Verifier Data

ERROR: no interpretation found !