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/MIPLIB/miplib3/normalized-mps-v2-13-7-qnet1.opb
MD5SUM67a03e26dfeeecb274c72e4a32ff53e9
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 2480
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 130023300
Number of bits of the sum of numbers in the objective function 27
Biggest number in a constraint 20945120000
Number of bits of the biggest number in a constraint 35
Biggest sum of numbers in a constraint 59755435295
Number of bits of the biggest sum of numbers36
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.903861
Number of variables4140
Total number of constraints632
Number of constraints which are clauses40
Number of constraints which are cardinality constraints (but not clauses)48
Number of constraints which are nor clauses,nor cardinality constraints544
Minimum length of a constraint2
Maximum length of a constraint77

Trace number 10486

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-23 18:37:54 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9247 boxname=wulflinc18 idbench=1043 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  67a03e26dfeeecb274c72e4a32ff53e9  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-qnet1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-qnet1.opb
IDLAUNCH: 9247
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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:        922152 kB
Buffers:         15724 kB
Cached:          77028 kB
SwapCached:          0 kB
Active:          45700 kB
Inactive:        49948 kB
HighTotal:      131008 kB
HighFree:        49700 kB
LowTotal:       903652 kB
LowFree:        872452 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            11312 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 18:38:43 (client local time) WITH STATUS 20 IN 47.9457 SECONDS
stats: 9247 7 47.9457 20

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
s UNSATISFIABLE

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/9476/stat): 9476 (pb2sat) R 9475 9476 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 22406810 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9476/statm): 373 2 364 364 0 9 0
[pid=9476] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-qnet1.opb

[startup+10.0023 s]
Raw data (loadavg): 0.93 0.98 0.94 2/55 9476
Raw data (/proc/9476/stat): 9476 (pb2sat) R 9475 9476 4060 0 -1 0 15429 0 0 0 932 47 0 0 25 0 1 0 22406810 45600768 9623 4294967295 134512640 135987407 3221224560 3221223248 134811839 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9476/statm): 11133 9623 364 364 0 10769 0
[pid=9476] vsize: 44532
Current children cumulated CPU time (s) 9.79
Current children cumulated vsize (Kb) 44532

[startup+20.0032 s]
Raw data (loadavg): 0.94 0.98 0.94 2/55 9476
Raw data (/proc/9476/stat): 9476 (pb2sat) R 9475 9476 4060 0 -1 0 15699 0 0 0 1886 62 0 0 25 0 1 0 22406810 46555136 9893 4294967295 134512640 135987407 3221224560 3221223248 134812056 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9476/statm): 11366 9893 364 364 0 11002 0
[pid=9476] vsize: 45464
Current children cumulated CPU time (s) 19.48
Current children cumulated vsize (Kb) 45464

[startup+30.0042 s]
Raw data (loadavg): 0.95 0.98 0.94 2/55 9476
Raw data (/proc/9476/stat): 9476 (pb2sat) R 9475 9476 4060 0 -1 0 15972 0 0 0 2845 76 0 0 25 0 1 0 22406810 47550464 10133 4294967295 134512640 135987407 3221224560 3221223120 134788496 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9476/statm): 11609 10133 364 364 0 11245 0
[pid=9476] vsize: 46436
Current children cumulated CPU time (s) 29.21
Current children cumulated vsize (Kb) 46436

[startup+40.0041 s]
Raw data (loadavg): 0.96 0.98 0.94 2/55 9476
Raw data (/proc/9476/stat): 9476 (pb2sat) R 9475 9476 4060 0 -1 0 16080 0 0 0 3792 94 0 0 25 0 1 0 22406810 47972352 10241 4294967295 134512640 135987407 3221224560 3221223248 134811729 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9476/statm): 11712 10241 364 364 0 11348 0
[pid=9476] vsize: 46848
Current children cumulated CPU time (s) 38.86
Current children cumulated vsize (Kb) 46848
One traced child (pid=9476) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 49.3557
CPU time (s): 47.9457
CPU user time (s): 46.8279
CPU system time (s): 1.11783
CPU usage (%): 97.1431
Max. virtual memory (cumulated for all children) (Kb): 46848

Verifier Data

ERROR: no interpretation found !