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-mod008.opb
MD5SUMfbdb3cf321a85412feefcaac30780520
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 361
Optimality of the best value was proved NO
Number of terms in the objective function 319
Biggest coefficient in the objective function 87
Number of bits for the biggest coefficient in the objective function 7
Sum of the numbers in the objective function 23554
Number of bits of the sum of numbers in the objective function 15
Biggest number in a constraint 22000
Number of bits of the biggest number in a constraint 15
Biggest sum of numbers in a constraint 1027256
Number of bits of the biggest sum of numbers20
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.06
Number of variables319
Total number of constraints325
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)319
Number of constraints which are nor clauses,nor cardinality constraints6
Minimum length of a constraint1
Maximum length of a constraint231

Trace number 9971

Launcher Data

LAUNCH ON wulflinc19 THE 2005-09-23 16:19:03 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8728 boxname=wulflinc19 idbench=524 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  fbdb3cf321a85412feefcaac30780520  /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-mod008.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-mod008.opb
IDLAUNCH: 8728
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.169
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		: 451.169
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:        924768 kB
Buffers:         15520 kB
Cached:          74988 kB
SwapCached:          0 kB
Active:          45752 kB
Inactive:        47620 kB
HighTotal:      131008 kB
HighFree:        52556 kB
LowTotal:       903652 kB
LowFree:        872212 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10956 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:20:52 (client local time) WITH STATUS 1 IN 108.425 SECONDS
stats: 8728 7 108.425 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/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21572071 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 373 2 364 364 0 9 0
[pid=8463] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc19/normalized-mps-v2-20-10-mod008.opb

[startup+10.0019 s]
Raw data (loadavg): 0.92 0.94 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 32356 0 0 0 925 71 0 0 25 0 1 0 21572071 100126720 21205 4294967295 134512640 135987407 3221224560 3221146108 134636980 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 24445 21205 364 364 0 24081 0
[pid=8463] vsize: 97780
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 97780

[startup+20.0027 s]
Raw data (loadavg): 0.93 0.94 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 63414 0 0 0 1865 128 0 0 25 0 1 0 21572071 197599232 41051 4294967295 134512640 135987407 3221224560 3221153488 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 48242 41051 364 364 0 47878 0
[pid=8463] vsize: 192968
Current children cumulated CPU time (s) 19.93
Current children cumulated vsize (Kb) 192968

[startup+30.0035 s]
Raw data (loadavg): 0.94 0.94 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 105768 0 0 0 2776 214 0 0 25 0 1 0 21572071 328675328 61209 4294967295 134512640 135987407 3221224560 3221157036 135480553 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 80243 61209 364 364 0 79879 0
[pid=8463] vsize: 320972
Current children cumulated CPU time (s) 29.9
Current children cumulated vsize (Kb) 320972

[startup+40.0043 s]
Raw data (loadavg): 0.95 0.94 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 123729 0 0 0 3741 246 0 0 25 0 1 0 21572071 386715648 78951 4294967295 134512640 135987407 3221224560 3221168284 134635332 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 94413 78951 364 364 0 94049 0
[pid=8463] vsize: 377652
Current children cumulated CPU time (s) 39.87
Current children cumulated vsize (Kb) 377652

[startup+50.0051 s]
Raw data (loadavg): 0.96 0.94 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 154311 0 0 0 4684 302 0 0 25 0 1 0 21572071 574881792 108871 4294967295 134512640 135987407 3221224560 3221170108 135499874 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 140352 108871 364 364 0 139988 0
[pid=8463] vsize: 561408
Current children cumulated CPU time (s) 49.86
Current children cumulated vsize (Kb) 561408

[startup+60.0059 s]
Raw data (loadavg): 0.96 0.95 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 208234 0 0 0 5573 409 0 0 25 0 1 0 21572071 651030528 119073 4294967295 134512640 135987407 3221224560 3221170288 134537491 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 158943 119073 364 364 0 158579 0
[pid=8463] vsize: 635772
Current children cumulated CPU time (s) 59.82
Current children cumulated vsize (Kb) 635772

[startup+70.0067 s]
Raw data (loadavg): 0.97 0.95 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 224516 0 0 0 6538 442 0 0 25 0 1 0 21572071 707338240 135155 4294967295 134512640 135987407 3221224560 3221174472 134893009 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 172690 135155 364 364 0 172326 0
[pid=8463] vsize: 690760
Current children cumulated CPU time (s) 69.8
Current children cumulated vsize (Kb) 690760

[startup+80.0085 s]
Raw data (loadavg): 0.97 0.95 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 243084 0 0 0 7504 475 0 0 25 0 1 0 21572071 733175808 153496 4294967295 134512640 135987407 3221224560 3221183392 134537371 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 178998 153496 364 364 0 178634 0
[pid=8463] vsize: 715992
Current children cumulated CPU time (s) 79.79
Current children cumulated vsize (Kb) 715992

[startup+90.0093 s]
Raw data (loadavg): 0.98 0.95 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 261821 0 0 0 8468 508 0 0 25 0 1 0 21572071 759181312 171999 4294967295 134512640 135987407 3221224560 3221173308 134669184 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 185347 171999 364 364 0 184983 0
[pid=8463] vsize: 741388
Current children cumulated CPU time (s) 89.76
Current children cumulated vsize (Kb) 741388

[startup+100.009 s]
Raw data (loadavg): 0.98 0.95 0.91 2/55 8463
Raw data (/proc/8463/stat): 8463 (pb2sat) R 8462 8463 4060 0 -1 0 276735 0 0 0 9437 537 0 0 25 0 1 0 21572071 830648320 186727 4294967295 134512640 135987407 3221224560 3221207772 135480487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8463/statm): 202795 186727 364 364 0 202431 0
[pid=8463] vsize: 811180
Current children cumulated CPU time (s) 99.74
Current children cumulated vsize (Kb) 811180
One traced child (pid=8463) exited with status: 1
All traced children have exited ! Game is over.

Child status: 1
Real time (s): 108.69
CPU time (s): 108.425
CPU user time (s): 102.609
CPU system time (s): 5.81512
CPU usage (%): 99.7555
Max. virtual memory (cumulated for all children) (Kb): 811180

Verifier Data

ERROR: no interpretation found !