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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos17.opb
MD5SUM510c7f71a2644dcf876297008b35f617
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 19526518
Optimality of the best value was proved NO
Number of terms in the objective function 2126
Biggest coefficient in the objective function 27663360
Number of bits for the biggest coefficient in the objective function 25
Sum of the numbers in the objective function 110500348
Number of bits of the sum of numbers in the objective function 27
Biggest number in a constraint 1677721600000000
Number of bits of the biggest number in a constraint 51
Biggest sum of numbers in a constraint 40265324766820451
Number of bits of the biggest sum of numbers56
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1195.06
Number of variables3115
Total number of constraints971
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)300
Number of constraints which are nor clauses,nor cardinality constraints671
Minimum length of a constraint1
Maximum length of a constraint780

Trace number 10170

Launcher Data

LAUNCH ON wulflinc28 THE 2005-09-23 17:22:32 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8927 boxname=wulflinc28 idbench=723 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  510c7f71a2644dcf876297008b35f617  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-neos17.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-neos17.opb
IDLAUNCH: 8927
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.188
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		: 451.188
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:        935044 kB
Buffers:         11980 kB
Cached:          70504 kB
SwapCached:          0 kB
Active:          45700 kB
Inactive:        39664 kB
HighTotal:      131008 kB
HighFree:        56280 kB
LowTotal:       903652 kB
LowFree:        878764 kB
SwapTotal:     2097640 kB
SwapFree:      2097640 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:             8600 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 17:24:11 (client local time) WITH STATUS 0 IN 96.3264 SECONDS
stats: 8927 7 96.3264 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/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21916844 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 373 2 364 364 0 9 0
[pid=9039] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-neos17.opb

[startup+10.0019 s]
Raw data (loadavg): 0.94 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 27488 0 0 0 928 69 0 0 25 0 1 0 21916844 80142336 16332 4294967295 134512640 135987407 3221224560 3221125240 134802688 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 19566 16332 364 364 0 19202 0
[pid=9039] vsize: 78264
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 78264

[startup+20.0026 s]
Raw data (loadavg): 0.95 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 55405 0 0 0 1862 133 0 0 25 0 1 0 21916844 157990912 33004 4294967295 134512640 135987407 3221224560 3221200832 135486762 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 38572 33004 364 364 0 38208 0
[pid=9039] vsize: 154288
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 154288

[startup+30.0032 s]
Raw data (loadavg): 0.95 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 95982 0 0 0 2775 218 0 0 25 0 1 0 21916844 316125184 51383 4294967295 134512640 135987407 3221224560 3221159008 134877726 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 77179 51383 364 364 0 76815 0
[pid=9039] vsize: 308716
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 308716

[startup+40.004 s]
Raw data (loadavg): 0.96 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 110493 0 0 0 3745 248 0 0 25 0 1 0 21916844 321593344 65645 4294967295 134512640 135987407 3221224560 3221180668 134637002 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9039/statm): 78514 65646 364 364 0 78150 0
[pid=9039] vsize: 314056
Current children cumulated CPU time (s) 39.93
Current children cumulated vsize (Kb) 314056

[startup+50.0046 s]
Raw data (loadavg): 0.97 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 151739 0 0 0 4658 331 0 0 25 0 1 0 21916844 450527232 87268 4294967295 134512640 135987407 3221224560 3221157356 135480617 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 109992 87268 364 364 0 109628 0
[pid=9039] vsize: 439968
Current children cumulated CPU time (s) 49.89
Current children cumulated vsize (Kb) 439968

[startup+60.0043 s]
Raw data (loadavg): 0.97 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 188776 0 0 0 5573 416 0 0 25 0 1 0 21916844 554975232 99514 4294967295 134512640 135987407 3221224560 3221159872 134537491 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 135492 99514 364 364 0 135128 0
[pid=9039] vsize: 541968
Current children cumulated CPU time (s) 59.89
Current children cumulated vsize (Kb) 541968

[startup+70.005 s]
Raw data (loadavg): 0.97 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 201570 0 0 0 6543 445 0 0 25 0 1 0 21916844 595177472 112100 4294967295 134512640 135987407 3221224560 3221221220 135479922 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 145307 112100 364 364 0 144943 0
[pid=9039] vsize: 581228
Current children cumulated CPU time (s) 69.88
Current children cumulated vsize (Kb) 581228

[startup+80.0057 s]
Raw data (loadavg): 0.98 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 215913 0 0 0 7508 480 0 0 25 0 1 0 21916844 599736320 126196 4294967295 134512640 135987407 3221224560 3221143312 134878384 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 146420 126196 364 364 0 146056 0
[pid=9039] vsize: 585680
Current children cumulated CPU time (s) 79.88
Current children cumulated vsize (Kb) 585680

[startup+90.0064 s]
Raw data (loadavg): 0.98 0.98 0.98 2/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) R 9038 9039 4005 0 -1 0 229290 0 0 0 8474 514 0 0 25 0 1 0 21916844 657952768 139361 4294967295 134512640 135987407 3221224560 3221144560 134877708 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9039/statm): 160633 139361 364 364 0 160269 0
[pid=9039] vsize: 642532
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 642532



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+96.1481 s]
Raw data (loadavg): 0.98 0.98 0.98 1/55 9039
Raw data (/proc/9039/stat): 9039 (pb2sat) T 9038 9039 4005 0 -1 0 236646 0 0 0 9070 531 0 0 25 0 1 0 21916844 946954240 146600 4294967295 134512640 135987407 3221224560 3221132352 135544035 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/9039/statm): 231190 146600 364 364 0 230826 0
[pid=9039] vsize: 924760
Current children cumulated CPU time (s) 96.01
Current children cumulated vsize (Kb) 924760

Sending SIGTERM to -9039
Sleeping 2 seconds
Sending SIGKILL to -9039
One traced child (pid=9039) 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): 98.4551
CPU time (s): 96.3264
CPU user time (s): 90.7092
CPU system time (s): 5.61715
CPU usage (%): 97.8378
Max. virtual memory (cumulated for all children) (Kb): 924760

Verifier Data

ERROR: no interpretation found !