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 3808

Launcher Data

LAUNCH ON wulflinc26 THE 2005-09-19 03:04:43 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1757 boxname=wulflinc26 idbench=585 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  a4be7674b1644074aec8018258f898aa  /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-net12.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-net12.opb
IDLAUNCH: 1757
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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		: 451.061
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:        881100 kB
Buffers:         37912 kB
Cached:          86612 kB
SwapCached:        868 kB
Active:          78000 kB
Inactive:        49136 kB
HighTotal:      131008 kB
HighFree:        41692 kB
LowTotal:       903652 kB
LowFree:        839408 kB
SwapTotal:     2097892 kB
SwapFree:      2096540 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5700 kB
Slab:            20772 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 03:05:00 (client local time) WITH STATUS 0 IN 15.7636 SECONDS
stats: 1757 7 15.7636 0

Solver Data

c Decisions:	0
c Implications:	0
c RUNTIME:	15.1297s
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/8697/stat): 8697 (galena) R 8696 8697 16528 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1846525409 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/8697/statm): 248 2 241 241 0 7 0
[pid=8697] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-20-10-net12.opb

[startup+10.0027 s]
Raw data (loadavg): 0.88 0.95 0.73 2/56 8697
Raw data (/proc/8697/stat): 8697 (galena) R 8696 8697 16528 0 -1 0 3557 0 0 0 984 13 0 0 25 0 1 0 1846525409 14221312 3043 4294967295 134512640 135412752 3221224560 3221221920 134726601 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/8697/statm): 3472 3043 241 241 0 3231 0
[pid=8697] vsize: 13888
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 13888
One traced child (pid=8697) exited with status: 0
All traced children have exited ! Game is over.

Child status: 0
Real time (s): 15.8183
CPU time (s): 15.7636
CPU user time (s): 15.4307
CPU system time (s): 0.332949
CPU usage (%): 99.6541
Max. virtual memory (cumulated for all children) (Kb): 13888

Verifier Data

ERROR: no interpretation found !