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/miplib3/normalized-mps-v2-20-10-mitre.opb
MD5SUMcb52c3dd346b4d656b5e715b686fba39
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 8562
Optimality of the best value was proved NO
Number of terms in the objective function 9324
Biggest coefficient in the objective function 213
Number of bits for the biggest coefficient in the objective function 8
Sum of the numbers in the objective function 909647
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 1069
Number of bits of the biggest number in a constraint 11
Biggest sum of numbers in a constraint 909647
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 benchmark1197.66
Number of variables10724
Total number of constraints12778
Number of constraints which are clauses140
Number of constraints which are cardinality constraints (but not clauses)12255
Number of constraints which are nor clauses,nor cardinality constraints383
Minimum length of a constraint1
Maximum length of a constraint98

Trace number 10088

Launcher Data

LAUNCH ON wulflinc20 THE 2005-09-23 16:56:27 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8849 boxname=wulflinc20 idbench=645 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  cb52c3dd346b4d656b5e715b686fba39  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-mitre.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-mitre.opb
IDLAUNCH: 8849
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.012
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		: 451.012
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:        933468 kB
Buffers:         11940 kB
Cached:          71972 kB
SwapCached:          0 kB
Active:          47316 kB
Inactive:        39516 kB
HighTotal:      131008 kB
HighFree:        54600 kB
LowTotal:       903652 kB
LowFree:        878868 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:             8740 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:58:10 (client local time) WITH STATUS 0 IN 101.093 SECONDS
stats: 8849 7 101.093 0

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
s UNKNOWN

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/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21796723 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 373 2 364 364 0 9 0
[pid=8409] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-mitre.opb

[startup+10.0019 s]
Raw data (loadavg): 0.93 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 23616 0 0 0 944 52 0 0 25 0 1 0 21796723 73678848 12508 4294967295 134512640 135987407 3221224560 3221207584 134637890 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 17988 12508 364 364 0 17624 0
[pid=8409] vsize: 71952
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 71952

[startup+20.0026 s]
Raw data (loadavg): 0.94 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 50160 0 0 0 1886 109 0 0 25 0 1 0 21796723 159105024 27835 4294967295 134512640 135987407 3221224560 3221221232 134636930 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 38844 27835 364 364 0 38480 0
[pid=8409] vsize: 155376
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 155376

[startup+30.0034 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 90878 0 0 0 2800 193 0 0 25 0 1 0 21796723 280707072 46346 4294967295 134512640 135987407 3221224560 3221211184 134878011 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 68532 46346 364 364 0 68168 0
[pid=8409] vsize: 274128
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 274128

[startup+40.0041 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 104266 0 0 0 3770 223 0 0 25 0 1 0 21796723 317775872 59510 4294967295 134512640 135987407 3221224560 3221210848 134878514 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 77582 59510 364 364 0 77218 0
[pid=8409] vsize: 310328
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 310328

[startup+50.0048 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 118987 0 0 0 4736 256 0 0 25 0 1 0 21796723 321425408 73985 4294967295 134512640 135987407 3221224560 3221208776 135488013 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 78473 73985 364 364 0 78109 0
[pid=8409] vsize: 313892
Current children cumulated CPU time (s) 49.92
Current children cumulated vsize (Kb) 313892

[startup+60.0045 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 182821 0 0 0 5596 392 0 0 25 0 1 0 21796723 550031360 93659 4294967295 134512640 135987407 3221224560 3221210236 134636950 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 134285 93659 364 364 0 133921 0
[pid=8409] vsize: 537140
Current children cumulated CPU time (s) 59.88
Current children cumulated vsize (Kb) 537140

[startup+70.0053 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 195761 0 0 0 6568 421 0 0 25 0 1 0 21796723 587235328 106384 4294967295 134512640 135987407 3221224560 3221207548 134637002 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 143368 106384 364 364 0 143004 0
[pid=8409] vsize: 573472
Current children cumulated CPU time (s) 69.89
Current children cumulated vsize (Kb) 573472

[startup+80.006 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 210760 0 0 0 7535 454 0 0 25 0 1 0 21796723 592506880 121139 4294967295 134512640 135987407 3221224560 3221208284 134557772 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 144655 121139 364 364 0 144291 0
[pid=8409] vsize: 578620
Current children cumulated CPU time (s) 79.89
Current children cumulated vsize (Kb) 578620

[startup+90.0067 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 224012 0 0 0 8504 485 0 0 25 0 1 0 21796723 646352896 134169 4294967295 134512640 135987407 3221224560 3221210752 134877726 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 157801 134169 364 364 0 157437 0
[pid=8409] vsize: 631204
Current children cumulated CPU time (s) 89.89
Current children cumulated vsize (Kb) 631204

[startup+100.007 s]
Raw data (loadavg): 0.98 0.96 0.91 2/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) R 8408 8409 4059 0 -1 0 237305 0 0 0 9473 516 0 0 25 0 1 0 21796723 649596928 147239 4294967295 134512640 135987407 3221224560 3221216496 134866006 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8409/statm): 158593 147239 364 364 0 158229 0
[pid=8409] vsize: 634372
Current children cumulated CPU time (s) 99.89
Current children cumulated vsize (Kb) 634372



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+100.885 s]
Raw data (loadavg): 0.98 0.96 0.91 1/55 8409
Raw data (/proc/8409/stat): 8409 (pb2sat) T 8408 8409 4059 0 -1 0 242915 0 0 0 9549 526 0 0 25 0 1 0 21796723 943734784 152680 4294967295 134512640 135987407 3221224560 3221208844 135635874 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8409/statm): 230404 152680 364 364 0 230040 0
[pid=8409] vsize: 921616
Current children cumulated CPU time (s) 100.75
Current children cumulated vsize (Kb) 921616

Sending SIGTERM to -8409
Sleeping 2 seconds
Sending SIGKILL to -8409
One traced child (pid=8409) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 103.204
CPU time (s): 101.093
CPU user time (s): 95.5135
CPU system time (s): 5.57915
CPU usage (%): 97.9537
Max. virtual memory (cumulated for all children) (Kb): 921616

Verifier Data

ERROR: no interpretation found !