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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos11.opb
MD5SUM61549d48f99a5af6fe87bd8bf474bfaf
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 39191576541
Optimality of the best value was proved NO
Number of terms in the objective function 5400
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 193273528140
Number of bits of the sum of numbers in the objective function 38
Biggest number in a constraint 536870912
Number of bits of the biggest number in a constraint 30
Biggest sum of numbers in a constraint 193273528140
Number of bits of the biggest sum of numbers38
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1251.59
Number of variables8600
Total number of constraints3706
Number of constraints which are clauses600
Number of constraints which are cardinality constraints (but not clauses)1020
Number of constraints which are nor clauses,nor cardinality constraints2086
Minimum length of a constraint1
Maximum length of a constraint450

Trace number 10168

Launcher Data

LAUNCH ON wulflinc12 THE 2005-09-23 17:22:12 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8922 boxname=wulflinc12 idbench=718 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  61549d48f99a5af6fe87bd8bf474bfaf  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-neos11.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-neos11.opb
IDLAUNCH: 8922
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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		: 451.191
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:        946308 kB
Buffers:          6060 kB
Cached:          62688 kB
SwapCached:          0 kB
Active:          19196 kB
Inactive:        52468 kB
HighTotal:      131008 kB
HighFree:        86240 kB
LowTotal:       903652 kB
LowFree:        860068 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11080 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 17:24:02 (client local time) WITH STATUS 1 IN 109.416 SECONDS
stats: 8922 7 109.416 1

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 186831089484
c big objective detected
c trying from 0 to 511

	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/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21952302 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9318/statm): 373 2 364 364 0 9 0
[pid=9318] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-neos11.opb

[startup+10.0025 s]
Raw data (loadavg): 0.86 0.94 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 14300 0 0 0 960 35 0 0 25 0 1 0 21952302 44650496 8510 4294967295 134512640 135987407 3221224560 3221223248 134811972 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9318/statm): 10901 8510 364 364 0 10537 0
[pid=9318] vsize: 43604
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 43604

[startup+20.0033 s]
Raw data (loadavg): 0.88 0.94 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 43720 0 0 0 1876 107 0 0 25 0 1 0 21952302 134463488 27366 4294967295 134512640 135987407 3221224560 3220609904 134856461 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 32828 27366 364 364 0 32464 0
[pid=9318] vsize: 131312
Current children cumulated CPU time (s) 19.83
Current children cumulated vsize (Kb) 131312

[startup+30.0032 s]
Raw data (loadavg): 0.90 0.94 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 78527 0 0 0 2802 178 0 0 25 0 1 0 21952302 291508224 55391 4294967295 134512640 135987407 3221224560 3220300892 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 71169 55393 364 364 0 70805 0
[pid=9318] vsize: 284676
Current children cumulated CPU time (s) 29.8
Current children cumulated vsize (Kb) 284676

[startup+40.004 s]
Raw data (loadavg): 0.91 0.94 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 109887 0 0 0 3735 243 0 0 25 0 1 0 21952302 334503936 64943 4294967295 134512640 135987407 3221224560 3220921712 134856714 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 81666 64943 364 364 0 81302 0
[pid=9318] vsize: 326664
Current children cumulated CPU time (s) 39.78
Current children cumulated vsize (Kb) 326664

[startup+50.0049 s]
Raw data (loadavg): 0.93 0.94 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 127745 0 0 0 4695 281 0 0 25 0 1 0 21952302 395362304 82575 4294967295 134512640 135987407 3221224560 3220693296 134863098 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 96524 82575 364 364 0 96160 0
[pid=9318] vsize: 386096
Current children cumulated CPU time (s) 49.76
Current children cumulated vsize (Kb) 386096

[startup+60.0057 s]
Raw data (loadavg): 0.94 0.95 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 170209 0 0 0 5608 362 0 0 25 0 1 0 21952302 532766720 105420 4294967295 134512640 135987407 3221224560 3219774716 134636973 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 130070 105421 364 364 0 129706 0
[pid=9318] vsize: 520280
Current children cumulated CPU time (s) 59.7
Current children cumulated vsize (Kb) 520280

[startup+70.0065 s]
Raw data (loadavg): 0.95 0.95 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 210478 0 0 0 6521 447 0 0 25 0 1 0 21952302 655867904 120906 4294967295 134512640 135987407 3221224560 3220643840 134856702 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 160124 120906 364 364 0 159760 0
[pid=9318] vsize: 640496
Current children cumulated CPU time (s) 69.68
Current children cumulated vsize (Kb) 640496

[startup+80.0064 s]
Raw data (loadavg): 0.95 0.95 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 225945 0 0 0 7487 480 0 0 25 0 1 0 21952302 711725056 136171 4294967295 134512640 135987407 3221224560 3220862912 134856505 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 173761 136171 364 364 0 173397 0
[pid=9318] vsize: 695044
Current children cumulated CPU time (s) 79.67
Current children cumulated vsize (Kb) 695044

[startup+90.0072 s]
Raw data (loadavg): 0.96 0.95 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 244142 0 0 0 8450 515 0 0 25 0 1 0 21952302 737947648 154131 4294967295 134512640 135987407 3221224560 3220725292 135482121 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 180163 154131 364 364 0 179799 0
[pid=9318] vsize: 720652
Current children cumulated CPU time (s) 89.65
Current children cumulated vsize (Kb) 720652

[startup+100.007 s]
Raw data (loadavg): 0.97 0.95 0.97 2/55 9318
Raw data (/proc/9318/stat): 9318 (pb2sat) R 9317 9318 4060 0 -1 0 263414 0 0 0 9405 558 0 0 25 0 1 0 21952302 769036288 173167 4294967295 134512640 135987407 3221224560 3220910960 134856473 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9318/statm): 187753 173167 364 364 0 187389 0
[pid=9318] vsize: 751012
Current children cumulated CPU time (s) 99.63
Current children cumulated vsize (Kb) 751012
One traced child (pid=9318) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 109.804
CPU time (s): 109.416
CPU user time (s): 103.387
CPU system time (s): 6.02908
CPU usage (%): 99.6471
Max. virtual memory (cumulated for all children) (Kb): 751012

Verifier Data

ERROR: no interpretation found !