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/MIPLIB/miplib2003/normalized-mps-v2-20-10-net12.opb
MD5SUMa4be7674b1644074aec8018258f898aa
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 214
Optimality of the best value was proved YES
Number of terms in the objective function 39
Biggest coefficient in the objective function 20
Number of bits for the biggest coefficient in the objective function 5
Sum of the numbers in the objective function 337
Number of bits of the sum of numbers in the objective function 9
Biggest number in a constraint 12288
Number of bits of the biggest number in a constraint 14
Biggest sum of numbers in a constraint 137193
Number of bits of the biggest sum of numbers18
Best result obtained on this benchmarkOPTIMUM FOUND
Best CPU time to get the best result obtained on this benchmark333.516
Number of variables147395
Total number of constraints28136
Number of constraints which are clauses12
Number of constraints which are cardinality constraints (but not clauses)1994
Number of constraints which are nor clauses,nor cardinality constraints26130
Minimum length of a constraint1
Maximum length of a constraint292

Trace number 10034

Launcher Data

LAUNCH ON wulflinc26 THE 2005-09-23 16:37:51 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8789 boxname=wulflinc26 idbench=585 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  a4be7674b1644074aec8018258f898aa  /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-net12.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-net12.opb
IDLAUNCH: 8789
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.055
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		: 451.055
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:        915716 kB
Buffers:         11336 kB
Cached:          90188 kB
SwapCached:          0 kB
Active:          53036 kB
Inactive:        51388 kB
HighTotal:      131008 kB
HighFree:        37912 kB
LowTotal:       903652 kB
LowFree:        877804 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:             8912 kB
Committed_AS:    63624 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 16:39:25 (client local time) WITH STATUS 0 IN 91.819 SECONDS
stats: 8789 7 91.819 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/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 21650162 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 373 2 364 364 0 9 0
[pid=8114] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-net12.opb

[startup+10.0026 s]
Raw data (loadavg): 0.86 0.94 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 19725 0 0 0 947 49 0 0 25 0 1 0 21650162 61030400 11688 4294967295 134512640 135987407 3221224560 3221221744 134536160 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 14900 11688 364 364 0 14536 0
[pid=8114] vsize: 59600
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 59600

[startup+20.0033 s]
Raw data (loadavg): 0.88 0.94 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 38910 0 0 0 1901 93 0 0 25 0 1 0 21650162 124764160 22772 4294967295 134512640 135987407 3221224560 3221173804 135499901 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 30460 22772 364 364 0 30096 0
[pid=8114] vsize: 121840
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 121840

[startup+30.004 s]
Raw data (loadavg): 0.90 0.94 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 73801 0 0 0 2825 168 0 0 25 0 1 0 21650162 232165376 41571 4294967295 134512640 135987407 3221224560 3221165244 135479970 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 56681 41571 364 364 0 56317 0
[pid=8114] vsize: 226724
Current children cumulated CPU time (s) 29.93
Current children cumulated vsize (Kb) 226724

[startup+40.0136 s]
Raw data (loadavg): 0.91 0.94 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 101303 0 0 0 3761 231 0 0 25 0 1 0 21650162 321187840 56536 4294967295 134512640 135987407 3221224560 3221143712 134640490 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 78415 56536 364 364 0 78051 0
[pid=8114] vsize: 313660
Current children cumulated CPU time (s) 39.92
Current children cumulated vsize (Kb) 313660

[startup+50.0153 s]
Raw data (loadavg): 0.93 0.94 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 142265 0 0 0 4671 317 0 0 25 0 1 0 21650162 512593920 96346 4294967295 134512640 135987407 3221224560 3221152972 135500006 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 125145 96346 364 364 0 124781 0
[pid=8114] vsize: 500580
Current children cumulated CPU time (s) 49.88
Current children cumulated vsize (Kb) 500580

[startup+60.016 s]
Raw data (loadavg): 0.94 0.95 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 183761 0 0 0 5577 411 0 0 25 0 1 0 21650162 554254336 94523 4294967295 134512640 135987407 3221224560 3221188392 134864165 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 135316 94523 364 364 0 134952 0
[pid=8114] vsize: 541264
Current children cumulated CPU time (s) 59.88
Current children cumulated vsize (Kb) 541264

[startup+70.0157 s]
Raw data (loadavg): 0.95 0.95 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 198831 0 0 0 6540 448 0 0 25 0 1 0 21650162 591863808 109343 4294967295 134512640 135987407 3221224560 3221191168 134887796 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 144498 109343 364 364 0 144134 0
[pid=8114] vsize: 577992
Current children cumulated CPU time (s) 69.88
Current children cumulated vsize (Kb) 577992

[startup+80.0164 s]
Raw data (loadavg): 0.95 0.95 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 216353 0 0 0 7495 493 0 0 25 0 1 0 21650162 596594688 126574 4294967295 134512640 135987407 3221224560 3221151396 135478476 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 145653 126574 364 364 0 145289 0
[pid=8114] vsize: 582612
Current children cumulated CPU time (s) 79.88
Current children cumulated vsize (Kb) 582612

[startup+90.0171 s]
Raw data (loadavg): 0.96 0.95 0.93 2/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) R 8113 8114 4005 0 -1 0 232196 0 0 0 8452 534 0 0 25 0 1 0 21650162 660307968 142194 4294967295 134512640 135987407 3221224560 3221166940 134635332 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/8114/statm): 161208 142194 364 364 0 160844 0
[pid=8114] vsize: 644832
Current children cumulated CPU time (s) 89.86
Current children cumulated vsize (Kb) 644832



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+91.4789 s]
Raw data (loadavg): 0.96 0.95 0.93 1/55 8114
Raw data (/proc/8114/stat): 8114 (pb2sat) T 8113 8114 4005 0 -1 0 235149 0 0 0 8591 541 0 0 25 0 1 0 21650162 948228096 145106 4294967295 134512640 135987407 3221224560 3221125632 135544035 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/8114/statm): 231501 145106 364 364 0 231137 0
[pid=8114] vsize: 926004
Current children cumulated CPU time (s) 91.32
Current children cumulated vsize (Kb) 926004

Sending SIGTERM to -8114
Sleeping 2 seconds
Sending SIGKILL to -8114
One traced child (pid=8114) 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): 93.7822
CPU time (s): 91.819
CPU user time (s): 86.1099
CPU system time (s): 5.70913
CPU usage (%): 97.9067
Max. virtual memory (cumulated for all children) (Kb): 926004

Verifier Data

ERROR: no interpretation found !