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-vtp.base.opb
MD5SUM62492fa5ef4f36caec6c1eec4eeb566a
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 181
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 7516192762
Number of bits of the sum of numbers in the objective function 33
Biggest number in a constraint 198568686125056
Number of bits of the biggest number in a constraint 48
Biggest sum of numbers in a constraint 12817928787879752
Number of bits of the biggest sum of numbers54
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables4524
Total number of constraints262
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 constraints262
Minimum length of a constraint11
Maximum length of a constraint1080

Trace number 9935

Launcher Data

LAUNCH ON wulflinc14 THE 2005-09-23 16:13:41 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8687 boxname=wulflinc14 idbench=483 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  62492fa5ef4f36caec6c1eec4eeb566a  /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-20-10-vtp.base.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-20-10-vtp.base.opb
IDLAUNCH: 8687
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.058
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		: 451.058
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:        989704 kB
Buffers:          1972 kB
Cached:          25704 kB
SwapCached:          0 kB
Active:          17360 kB
Inactive:        13184 kB
HighTotal:      131008 kB
HighFree:       101080 kB
LowTotal:       903652 kB
LowFree:        888624 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8716 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:15:16 (client local time) WITH STATUS 0 IN 92.222 SECONDS
stats: 8687 7 92.222 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/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21539774 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8001/statm): 373 2 364 364 0 9 0
[pid=8001] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc14/normalized-mps-v2-20-10-vtp.base.opb

[startup+10.0017 s]
Raw data (loadavg): 0.93 0.94 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 28608 0 0 0 932 65 0 0 25 0 1 0 21539774 81010688 17440 4294967295 134512640 135987407 3221224560 3221188768 134537517 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8001/statm): 19778 17440 364 364 0 19414 0
[pid=8001] vsize: 79112
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 79112

[startup+20.0024 s]
Raw data (loadavg): 0.94 0.94 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 57313 0 0 0 1866 129 0 0 25 0 1 0 21539774 163860480 34908 4294967295 134512640 135987407 3221224560 3221162508 135486712 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8001/statm): 40005 34908 364 364 0 39641 0
[pid=8001] vsize: 160020
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 160020

[startup+30.0041 s]
Raw data (loadavg): 0.95 0.94 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 96531 0 0 0 2781 212 0 0 25 0 1 0 21539774 315097088 51925 4294967295 134512640 135987407 3221224560 3221163548 135480487 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8001/statm): 76928 51925 364 364 0 76564 0
[pid=8001] vsize: 307712
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 307712

[startup+40.0047 s]
Raw data (loadavg): 0.95 0.94 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 112459 0 0 0 3749 244 0 0 25 0 1 0 21539774 319827968 67585 4294967295 134512640 135987407 3221224560 3221214848 134878092 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8001/statm): 78083 67585 364 364 0 77719 0
[pid=8001] vsize: 312332
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 312332

[startup+50.0054 s]
Raw data (loadavg): 0.96 0.94 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 154128 0 0 0 4665 324 0 0 25 0 1 0 21539774 448176128 89627 4294967295 134512640 135987407 3221224560 3221168944 134537371 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8001/statm): 109418 89627 364 364 0 109054 0
[pid=8001] vsize: 437672
Current children cumulated CPU time (s) 49.89
Current children cumulated vsize (Kb) 437672

[startup+60.0061 s]
Raw data (loadavg): 0.97 0.94 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 189983 0 0 0 5589 400 0 0 25 0 1 0 21539774 585637888 100714 4294967295 134512640 135987407 3221224560 3221176172 134669201 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8001/statm): 142978 100714 364 364 0 142614 0
[pid=8001] vsize: 571912
Current children cumulated CPU time (s) 59.89
Current children cumulated vsize (Kb) 571912

[startup+70.0067 s]
Raw data (loadavg): 0.97 0.95 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 205529 0 0 0 6556 432 0 0 25 0 1 0 21539774 589828096 115994 4294967295 134512640 135987407 3221224560 3221180300 134637011 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8001/statm): 144001 115995 364 364 0 143637 0
[pid=8001] vsize: 576004
Current children cumulated CPU time (s) 69.88
Current children cumulated vsize (Kb) 576004

[startup+80.0074 s]
Raw data (loadavg): 0.97 0.95 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 221326 0 0 0 7519 470 0 0 25 0 1 0 21539774 595505152 131530 4294967295 134512640 135987407 3221224560 3221174512 134856487 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8001/statm): 145387 131530 364 364 0 145023 0
[pid=8001] vsize: 581548
Current children cumulated CPU time (s) 79.89
Current children cumulated vsize (Kb) 581548

[startup+90.0081 s]
Raw data (loadavg): 0.98 0.95 0.97 2/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) R 8000 8001 4060 0 -1 0 233526 0 0 0 8491 497 0 0 25 0 1 0 21539774 649216000 143523 4294967295 134512640 135987407 3221224560 3221195448 134864165 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8001/statm): 158500 143523 364 364 0 158136 0
[pid=8001] vsize: 634000
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 634000



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+92.0389 s]
Raw data (loadavg): 0.98 0.95 0.97 1/55 8001
Raw data (/proc/8001/stat): 8001 (pb2sat) T 8000 8001 4060 0 -1 0 240727 0 0 0 8679 511 0 0 25 0 1 0 21539774 943759360 150533 4294967295 134512640 135987407 3221224560 3221179244 135635874 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8001/statm): 230410 150533 364 364 0 230046 0
[pid=8001] vsize: 921640
Current children cumulated CPU time (s) 91.9
Current children cumulated vsize (Kb) 921640

Sending SIGTERM to -8001
Sleeping 2 seconds
Sending SIGKILL to -8001
One traced child (pid=8001) 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): 94.3516
CPU time (s): 92.222
CPU user time (s): 86.8028
CPU system time (s): 5.41918
CPU usage (%): 97.7429
Max. virtual memory (cumulated for all children) (Kb): 921640

Verifier Data

ERROR: no interpretation found !