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-momentum3.opb
MD5SUMfd20bcfe4a71405dc1e0ef3cb894b630
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 87370
Biggest coefficient in the objective function 1310720000
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 13573186735
Number of bits of the sum of numbers in the objective function 34
Biggest number in a constraint 10240000000000000927712935936
Number of bits of the biggest number in a constraint 94
Biggest sum of numbers in a constraint 29801266744107043904416645120
Number of bits of the biggest sum of numbers95
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables93400
Total number of constraints70153
Number of constraints which are clauses6081
Number of constraints which are cardinality constraints (but not clauses)7185
Number of constraints which are nor clauses,nor cardinality constraints56887
Minimum length of a constraint1
Maximum length of a constraint1018

Trace number 594

Launcher Data

LAUNCH ON wulflinc13 THE 2005-09-18 11:46:08 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=581 boxname=wulflinc13 idbench=581 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  fd20bcfe4a71405dc1e0ef3cb894b630  /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-momentum3.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-momentum3.opb
IDLAUNCH: 581
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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		: 451.242
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:        601856 kB
Buffers:         33516 kB
Cached:         372008 kB
SwapCached:        708 kB
Active:         355896 kB
Inactive:        52272 kB
HighTotal:      131008 kB
HighFree:         3668 kB
LowTotal:       903652 kB
LowFree:        598188 kB
SwapTotal:     2097136 kB
SwapFree:      2095936 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5740 kB
Slab:            18708 kB
Committed_AS:    64164 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 11:46:42 (client local time) WITH STATUS 0 IN 26.6449 SECONDS
stats: 581 7 26.6449 0

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Integer values too big to handle...
c Parse Error 8
c Problem opening input file name: /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-momentum3.opb
s UNKNOWN
c Exit Code: 0

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/3411/stat): 3411 (bsolo) R 3410 3411 1333 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1782794824 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/3411/statm): 107 3 90 68 0 39 0
[pid=3411] vsize: 428
open syscall for file /etc/ld.so.preload
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[startup+10.0037 s]
Raw data (loadavg): 1.04 0.98 0.91 2/56 3411
Raw data (/proc/3411/stat): 3411 (bsolo) R 3410 3411 1333 0 -1 0 93047 0 0 0 761 200 0 0 25 0 1 0 1782794824 383737856 92643 4294967295 134512640 134736556 3221224560 3221223104 134573621 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/3411/statm): 93686 92647 1116 68 0 93618 0
[pid=3411] vsize: 374744
Current children cumulated CPU time (s) 9.61
Current children cumulated vsize (Kb) 374744

[startup+20.0043 s]
Raw data (loadavg): 1.03 0.98 0.91 2/56 3411
Raw data (/proc/3411/stat): 3411 (bsolo) R 3410 3411 1333 0 -1 0 129774 0 0 0 1670 277 0 0 25 0 1 0 1782794824 531984384 128856 4294967295 134512640 134736556 3221224560 3221223028 1077313968 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/3411/statm): 129879 128856 1116 68 0 129811 0
[pid=3411] vsize: 519516
Current children cumulated CPU time (s) 19.47
Current children cumulated vsize (Kb) 519516
One traced child (pid=3411) exited with status: 0
All traced children have exited ! Game is over.

Child status: 0
Real time (s): 27.2237
CPU time (s): 26.6449
CPU user time (s): 23.5744
CPU system time (s): 3.07053
CPU usage (%): 97.874
Max. virtual memory (cumulated for all children) (Kb): 519516

Verifier Data

ERROR: no interpretation found !