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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-bandm.opb
MD5SUM91d5c8ee9bf634f10149ce0f1ab46e94
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 4710
Biggest coefficient in the objective function 53687091200000
Number of bits for the biggest coefficient in the objective function 46
Sum of the numbers in the objective function 4557677556349764
Number of bits of the sum of numbers in the objective function 53
Biggest number in a constraint 111669149696000
Number of bits of the biggest number in a constraint 47
Biggest sum of numbers in a constraint 4557677556349764
Number of bits of the biggest sum of numbers53
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark7.68083
Number of variables14160
Total number of constraints305
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints305
Minimum length of a constraint30
Maximum length of a constraint2100

Trace number 9857

Launcher Data

LAUNCH ON wulflinc11 THE 2005-09-23 16:00:59 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8613 boxname=wulflinc11 idbench=409 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  91d5c8ee9bf634f10149ce0f1ab46e94  /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-bandm.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-bandm.opb
IDLAUNCH: 8613
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.045
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		: 451.045
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:        913188 kB
Buffers:          8612 kB
Cached:          87608 kB
SwapCached:          0 kB
Active:          57748 kB
Inactive:        47996 kB
HighTotal:      131008 kB
HighFree:        41216 kB
LowTotal:       903652 kB
LowFree:        871972 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10144 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:02:41 (client local time) WITH STATUS 0 IN 99.7008 SECONDS
stats: 8613 7 99.7008 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/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21464959 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8701/statm): 373 2 364 364 0 9 0
[pid=8701] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-bandm.opb

[startup+10.0022 s]
Raw data (loadavg): 1.14 1.01 0.93 2/55 8703
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 29289 0 0 0 928 67 0 0 25 0 1 0 21464959 89669632 18144 4294967295 134512640 135987407 3221224560 3221204800 134878060 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8701/statm): 21892 18144 364 364 0 21528 0
[pid=8701] vsize: 87568
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 87568

[startup+20.002 s]
Raw data (loadavg): 1.11 1.01 0.93 2/55 8705
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 57910 0 0 0 1868 126 0 0 25 0 1 0 21464959 175362048 35543 4294967295 134512640 135987407 3221224560 3221188592 134856581 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8701/statm): 42813 35543 364 364 0 42449 0
[pid=8701] vsize: 171252
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 171252

[startup+30.0027 s]
Raw data (loadavg): 1.10 1.01 0.93 2/55 8707
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 101551 0 0 0 2774 214 0 0 25 0 1 0 21464959 309129216 56974 4294967295 134512640 135987407 3221224560 3221204912 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8701/statm): 75471 56974 364 364 0 75107 0
[pid=8701] vsize: 301884
Current children cumulated CPU time (s) 29.88
Current children cumulated vsize (Kb) 301884

[startup+40.0025 s]
Raw data (loadavg): 1.08 1.01 0.93 2/55 8707
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 115986 0 0 0 3745 243 0 0 25 0 1 0 21464959 354172928 71197 4294967295 134512640 135987407 3221224560 3221182012 134636994 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8701/statm): 86468 71198 364 364 0 86104 0
[pid=8701] vsize: 345872
Current children cumulated CPU time (s) 39.88
Current children cumulated vsize (Kb) 345872

[startup+50.0033 s]
Raw data (loadavg): 1.07 1.01 0.93 2/55 8707
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 150629 0 0 0 4678 307 0 0 25 0 1 0 21464959 537743360 104869 4294967295 134512640 135987407 3221224560 3221197696 134856702 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8701/statm): 131285 104872 364 364 0 130921 0
[pid=8701] vsize: 525140
Current children cumulated CPU time (s) 49.85
Current children cumulated vsize (Kb) 525140

[startup+60.0031 s]
Raw data (loadavg): 1.06 1.00 0.93 2/55 8707
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 194384 0 0 0 5587 396 0 0 25 0 1 0 21464959 588324864 105191 4294967295 134512640 135987407 3221224560 3221213344 134887887 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8701/statm): 143634 105191 364 364 0 143270 0
[pid=8701] vsize: 574536
Current children cumulated CPU time (s) 59.83
Current children cumulated vsize (Kb) 574536

[startup+70.0029 s]
Raw data (loadavg): 1.05 1.00 0.93 2/55 8707
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 205555 0 0 0 6560 423 0 0 25 0 1 0 21464959 622989312 116162 4294967295 134512640 135987407 3221224560 3221179468 135499903 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8701/statm): 152097 116162 364 364 0 151733 0
[pid=8701] vsize: 608388
Current children cumulated CPU time (s) 69.83
Current children cumulated vsize (Kb) 608388

[startup+80.0037 s]
Raw data (loadavg): 1.04 1.00 0.93 2/55 8707
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 219856 0 0 0 7529 453 0 0 25 0 1 0 21464959 627183616 130221 4294967295 134512640 135987407 3221224560 3221200012 135480526 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8701/statm): 153121 130221 364 364 0 152757 0
[pid=8701] vsize: 612484
Current children cumulated CPU time (s) 79.82
Current children cumulated vsize (Kb) 612484

[startup+90.0035 s]
Raw data (loadavg): 1.03 1.00 0.93 2/55 8707
Raw data (/proc/8701/stat): 8701 (pb2sat) R 8700 8701 4060 0 -1 0 233497 0 0 0 8500 482 0 0 25 0 1 0 21464959 631922688 143634 4294967295 134512640 135987407 3221224560 3221180732 134637039 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8701/statm): 154278 143634 364 364 0 153914 0
[pid=8701] vsize: 617112
Current children cumulated CPU time (s) 89.82
Current children cumulated vsize (Kb) 617112



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+99.5533 s]
Raw data (loadavg): 1.03 1.00 0.93 1/55 8707
Raw data (/proc/8701/stat): 8701 (pb2sat) T 8700 8701 4060 0 -1 0 243868 0 0 0 9436 501 0 0 25 0 1 0 21464959 969662464 153825 4294967295 134512640 135987407 3221224560 3221197200 135544035 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8701/statm): 236734 153825 364 364 0 236370 0
[pid=8701] vsize: 946936
Current children cumulated CPU time (s) 99.37
Current children cumulated vsize (Kb) 946936

Sending SIGTERM to -8701
Sleeping 2 seconds

[startup+100.004 s]
Raw data (loadavg): 1.03 1.00 0.93 1/56 8708
Raw data (/proc/8701/stat): 8701 (pb2sat) S 8700 8701 4060 0 -1 0 243869 0 0 0 9437 501 0 0 25 0 1 0 21464959 969662464 153826 4294967295 134512640 135987407 3221224560 3221195512 135549753 0 16384 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8701/statm): 236734 153826 364 364 0 236370 0
[pid=8701] vsize: 946936
Current children cumulated CPU time (s) 99.38
Current children cumulated vsize (Kb) 946936
Sending SIGKILL to -8701
One traced child (pid=8701) 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): 101.876
CPU time (s): 99.7008
CPU user time (s): 94.3727
CPU system time (s): 5.32819
CPU usage (%): 97.8645
Max. virtual memory (cumulated for all children) (Kb): 946936

Verifier Data

ERROR: no interpretation found !