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/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-pilot87.opb
MD5SUM9658bbaea81a963c53a05a25fe9ca956
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 7860
Biggest coefficient in the objective function 1728189562880
Number of bits for the biggest coefficient in the objective function 41
Sum of the numbers in the objective function 73714762784766
Number of bits of the sum of numbers in the objective function 47
Biggest number in a constraint 524288000000000
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 1292497795394025
Number of bits of the biggest sum of numbers51
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark4.37433
Number of variables78247
Total number of constraints3645
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 constraints3645
Minimum length of a constraint7
Maximum length of a constraint5778

Trace number 6502

Launcher Data

LAUNCH ON wulflinc11 THE 2005-09-20 07:19:24 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4391 boxname=wulflinc11 idbench=875 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  9658bbaea81a963c53a05a25fe9ca956  /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-13-7-pilot87.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-13-7-pilot87.opb
IDLAUNCH: 4391
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.028
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		: 451.028
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:        832436 kB
Buffers:         32788 kB
Cached:         142484 kB
SwapCached:        916 kB
Active:          71392 kB
Inactive:       106476 kB
HighTotal:      131008 kB
HighFree:         3808 kB
LowTotal:       903652 kB
LowFree:        828628 kB
SwapTotal:     2097136 kB
SwapFree:      2095640 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5664 kB
Slab:            18728 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-20 07:20:57 (client local time) WITH STATUS 20 IN 92.243 SECONDS
stats: 4391 7 92.243 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-13-7-pilot87.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.631904

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/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 18 0 0 0 0 0 0 0 21 0 1 0 1798452725 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/1416/statm): 239 2 232 232 0 7 0
[pid=1416] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-13-7-pilot87.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-13-7-pilot87.opb

[startup+10.0035 s]
Raw data (loadavg): 0.94 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 4027 0 0 0 986 11 0 0 25 0 1 0 1798452725 17223680 3912 4294967295 134512640 135450776 3221224560 3221223072 134600392 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/1416/statm): 4205 3912 232 232 0 3973 0
[pid=1416] vsize: 16820
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 16820

[startup+20.0043 s]
Raw data (loadavg): 0.95 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 4298 0 0 0 1984 13 0 0 25 0 1 0 1798452725 18317312 4183 4294967295 134512640 135450776 3221224560 3221223072 134600507 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/1416/statm): 4472 4183 232 232 0 4240 0
[pid=1416] vsize: 17888
Current children cumulated CPU time (s) 19.97
Current children cumulated vsize (Kb) 17888

[startup+30.0051 s]
Raw data (loadavg): 0.96 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 5921 0 0 0 2975 20 0 0 25 0 1 0 1798452725 25001984 5806 4294967295 134512640 135450776 3221224560 3221223072 134600376 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/1416/statm): 6104 5806 232 232 0 5872 0
[pid=1416] vsize: 24416
Current children cumulated CPU time (s) 29.95
Current children cumulated vsize (Kb) 24416

[startup+40.0059 s]
Raw data (loadavg): 0.96 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 6095 0 0 0 3972 22 0 0 25 0 1 0 1798452725 26017792 5980 4294967295 134512640 135450776 3221224560 3221223064 134853105 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/1416/statm): 6352 5980 232 232 0 6120 0
[pid=1416] vsize: 25408
Current children cumulated CPU time (s) 39.94
Current children cumulated vsize (Kb) 25408

[startup+50.0066 s]
Raw data (loadavg): 0.97 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 6617 0 0 0 4968 24 0 0 25 0 1 0 1798452725 27856896 6502 4294967295 134512640 135450776 3221224560 3221223040 134854957 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/1416/statm): 6801 6502 232 232 0 6569 0
[pid=1416] vsize: 27204
Current children cumulated CPU time (s) 49.92
Current children cumulated vsize (Kb) 27204

[startup+60.0074 s]
Raw data (loadavg): 0.97 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 7433 0 0 0 5960 31 0 0 25 0 1 0 1798452725 31682560 7318 4294967295 134512640 135450776 3221224560 3221223072 134600401 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/1416/statm): 7735 7318 232 232 0 7503 0
[pid=1416] vsize: 30940
Current children cumulated CPU time (s) 59.91
Current children cumulated vsize (Kb) 30940

[startup+70.0082 s]
Raw data (loadavg): 0.98 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 7881 0 0 0 6957 33 0 0 25 0 1 0 1798452725 33193984 7766 4294967295 134512640 135450776 3221224560 3221223072 134600423 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/1416/statm): 8104 7766 232 232 0 7872 0
[pid=1416] vsize: 32416
Current children cumulated CPU time (s) 69.9
Current children cumulated vsize (Kb) 32416

[startup+80.008 s]
Raw data (loadavg): 0.98 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 8231 0 0 0 7955 35 0 0 25 0 1 0 1798452725 34574336 8116 4294967295 134512640 135450776 3221224560 3221223072 134600412 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/1416/statm): 8441 8116 232 232 0 8209 0
[pid=1416] vsize: 33764
Current children cumulated CPU time (s) 79.9
Current children cumulated vsize (Kb) 33764

[startup+90.0088 s]
Raw data (loadavg): 0.98 0.96 0.95 2/56 1416
Raw data (/proc/1416/stat): 1416 (PBS4) R 1415 1416 9854 0 -1 0 9137 0 0 0 8948 40 0 0 25 0 1 0 1798452725 38031360 9022 4294967295 134512640 135450776 3221224560 3221223072 134599257 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/1416/statm): 9285 9022 232 232 0 9053 0
[pid=1416] vsize: 37140
Current children cumulated CPU time (s) 89.88
Current children cumulated vsize (Kb) 37140
One traced child (pid=1416) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 92.3643
CPU time (s): 92.243
CPU user time (s): 91.7531
CPU system time (s): 0.489925
CPU usage (%): 99.8687
Max. virtual memory (cumulated for all children) (Kb): 37140

Verifier Data

ERROR: no interpretation found !