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-v2-20-10-25fv47.opb
MD5SUM5984c30bfc33b34af2fab73888f86cf2
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 19170
Biggest coefficient in the objective function 536870912000000
Number of bits for the biggest coefficient in the objective function 49
Sum of the numbers in the objective function 10623608039212938
Number of bits of the sum of numbers in the objective function 54
Biggest number in a constraint 128285302811787264
Number of bits of the biggest number in a constraint 57
Biggest sum of numbers in a constraint 812950436219668362
Number of bits of the biggest sum of numbers60
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark34.4848
Number of variables47130
Total number of constraints820
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 constraints820
Minimum length of a constraint30
Maximum length of a constraint10200

Trace number 9941

Launcher Data

LAUNCH ON wulflinc17 THE 2005-09-23 16:14:34 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8690 boxname=wulflinc17 idbench=486 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  5984c30bfc33b34af2fab73888f86cf2  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-25fv47.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-25fv47.opb
IDLAUNCH: 8690
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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		: 451.161
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:        923376 kB
Buffers:         15880 kB
Cached:          76464 kB
SwapCached:          0 kB
Active:          50708 kB
Inactive:        44584 kB
HighTotal:      131008 kB
HighFree:        50204 kB
LowTotal:       903652 kB
LowFree:        873172 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6980 kB
Slab:            10336 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:16:19 (client local time) WITH STATUS 0 IN 102.123 SECONDS
stats: 8690 7 102.123 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/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21547493 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 373 2 364 364 0 9 0
[pid=8746] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-25fv47.opb

[startup+10.002 s]
Raw data (loadavg): 0.87 0.92 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 16144 0 0 0 958 39 0 0 25 0 1 0 21547493 52916224 10508 4294967295 134512640 135987407 3221224560 3221210624 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 12919 10508 364 364 0 12555 0
[pid=8746] vsize: 51676
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 51676

[startup+20.0026 s]
Raw data (loadavg): 0.89 0.92 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 49149 0 0 0 1888 107 0 0 25 0 1 0 21547493 151040000 26792 4294967295 134512640 135987407 3221224560 3221177312 134537491 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 36875 26792 364 364 0 36511 0
[pid=8746] vsize: 147500
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 147500

[startup+30.0032 s]
Raw data (loadavg): 0.90 0.92 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 79766 0 0 0 2826 165 0 0 25 0 1 0 21547493 246251520 47478 4294967295 134512640 135987407 3221224560 3221202872 134802665 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 60120 47478 364 364 0 59756 0
[pid=8746] vsize: 240480
Current children cumulated CPU time (s) 29.91
Current children cumulated vsize (Kb) 240480

[startup+40.0038 s]
Raw data (loadavg): 0.92 0.93 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 106537 0 0 0 3767 224 0 0 25 0 1 0 21547493 344608768 61757 4294967295 134512640 135987407 3221224560 3221181760 134887889 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 84133 61757 364 364 0 83769 0
[pid=8746] vsize: 336532
Current children cumulated CPU time (s) 39.91
Current children cumulated vsize (Kb) 336532

[startup+50.0044 s]
Raw data (loadavg): 0.93 0.93 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 121331 0 0 0 4734 256 0 0 25 0 1 0 21547493 349343744 76300 4294967295 134512640 135987407 3221224560 3221206960 134887887 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 85289 76300 364 364 0 84925 0
[pid=8746] vsize: 341156
Current children cumulated CPU time (s) 49.9
Current children cumulated vsize (Kb) 341156

[startup+60.005 s]
Raw data (loadavg): 0.94 0.93 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 161830 0 0 0 5645 341 0 0 25 0 1 0 21547493 477831168 97188 4294967295 134512640 135987407 3221224560 3221191920 135499907 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 116658 97188 364 364 0 116294 0
[pid=8746] vsize: 466632
Current children cumulated CPU time (s) 59.86
Current children cumulated vsize (Kb) 466632

[startup+70.0046 s]
Raw data (loadavg): 0.95 0.93 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 196401 0 0 0 6573 413 0 0 25 0 1 0 21547493 612048896 106996 4294967295 134512640 135987407 3221224560 3221197952 134877726 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 149426 106996 364 364 0 149062 0
[pid=8746] vsize: 597704
Current children cumulated CPU time (s) 69.86
Current children cumulated vsize (Kb) 597704

[startup+80.0052 s]
Raw data (loadavg): 0.96 0.93 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 210330 0 0 0 7543 443 0 0 25 0 1 0 21547493 615968768 120685 4294967295 134512640 135987407 3221224560 3221192988 135480425 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 150383 120685 364 364 0 150019 0
[pid=8746] vsize: 601532
Current children cumulated CPU time (s) 79.86
Current children cumulated vsize (Kb) 601532

[startup+90.0048 s]
Raw data (loadavg): 0.96 0.94 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 225066 0 0 0 8513 472 0 0 25 0 1 0 21547493 620429312 135167 4294967295 134512640 135987407 3221224560 3221178652 134669188 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 151472 135167 364 364 0 151108 0
[pid=8746] vsize: 605888
Current children cumulated CPU time (s) 89.85
Current children cumulated vsize (Kb) 605888

[startup+100.005 s]
Raw data (loadavg): 0.97 0.94 0.91 2/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) R 8745 8746 4060 0 -1 0 236723 0 0 0 9486 498 0 0 25 0 1 0 21547493 675627008 146632 4294967295 134512640 135987407 3221224560 3221175796 134887260 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/8746/statm): 164948 146632 364 364 0 164584 0
[pid=8746] vsize: 659792
Current children cumulated CPU time (s) 99.84
Current children cumulated vsize (Kb) 659792



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+101.941 s]
Raw data (loadavg): 0.97 0.94 0.91 1/55 8746
Raw data (/proc/8746/stat): 8746 (pb2sat) T 8745 8746 4060 0 -1 0 239699 0 0 0 9674 504 0 0 25 0 1 0 21547493 962060288 149558 4294967295 134512640 135987407 3221224560 3221186448 135544035 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/8746/statm): 234878 149558 364 364 0 234514 0
[pid=8746] vsize: 939512
Current children cumulated CPU time (s) 101.78
Current children cumulated vsize (Kb) 939512

Sending SIGTERM to -8746
Sleeping 2 seconds
Sending SIGKILL to -8746
One traced child (pid=8746) 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): 104.254
CPU time (s): 102.123
CPU user time (s): 96.7683
CPU system time (s): 5.35519
CPU usage (%): 97.9563
Max. virtual memory (cumulated for all children) (Kb): 939512

Verifier Data

ERROR: no interpretation found !