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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-fit2d.opb
MD5SUMe4d850251a185eefeba808334bb200f5
Bench Categoryoptimization, medium integers (OPTMEDINT)
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 102000
Biggest coefficient in the objective function 166502400
Number of bits for the biggest coefficient in the objective function 28
Sum of the numbers in the objective function 44079267426
Number of bits of the sum of numbers in the objective function 36
Biggest number in a constraint 166502400
Number of bits of the biggest number in a constraint 28
Biggest sum of numbers in a constraint 44079267426
Number of bits of the biggest sum of numbers36
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark54.3867
Number of variables118500
Total number of constraints10525
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 constraints10525
Minimum length of a constraint10
Maximum length of a constraint118500

Trace number 2528

Launcher Data

LAUNCH ON wulflinc28 THE 2005-09-18 20:07:23 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1602 boxname=wulflinc28 idbench=430 idsolver=2 numberseed=0
MD5SUM SOLVER: 1540ae3c74fe6bb56fea7dc39e0baf99  /oldhome/oroussel/solvers/galena
MD5SUM BENCH:  e4d850251a185eefeba808334bb200f5  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-fit2d.opb
REAL COMMAND:  galena /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-fit2d.opb
IDLAUNCH: 1602
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.077
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		: 451.077
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:        878348 kB
Buffers:         34116 kB
Cached:          93232 kB
SwapCached:        696 kB
Active:          95588 kB
Inactive:        34316 kB
HighTotal:      131008 kB
HighFree:        34216 kB
LowTotal:       903652 kB
LowFree:        844132 kB
SwapTotal:     2097640 kB
SwapFree:      2096372 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5812 kB
Slab:            20672 kB
Committed_AS:    64164 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 20:08:19 (client local time) WITH STATUS 20 IN 54.3867 SECONDS
stats: 1602 7 54.3867 20

Solver Data

c Decisions:	0
c Implications:	17
c RUNTIME:	53.0889s
s UNSATISFIABLE

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/4405/stat): 4405 (galena) R 4404 4405 20115 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 1844020841 1015808 2 4294967295 134512640 135412752 3221224560 3221224560 134512896 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/4405/statm): 248 2 241 241 0 7 0
[pid=4405] vsize: 992
open syscall for file /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-fit2d.opb

[startup+10.0035 s]
Raw data (loadavg): 0.75 0.80 0.90 2/56 4405
Raw data (/proc/4405/stat): 4405 (galena) R 4404 4405 20115 0 -1 0 3565 0 0 0 982 13 0 0 25 0 1 0 1844020841 12156928 2640 4294967295 134512640 135412752 3221224560 3221222316 134851952 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/4405/statm): 2968 2640 241 241 0 2727 0
[pid=4405] vsize: 11872
Current children cumulated CPU time (s) 9.95
Current children cumulated vsize (Kb) 11872

[startup+20.0042 s]
Raw data (loadavg): 0.79 0.80 0.90 2/56 4405
Raw data (/proc/4405/stat): 4405 (galena) R 4404 4405 20115 0 -1 0 5880 0 0 0 1968 24 0 0 25 0 1 0 1844020841 15568896 3575 4294967295 134512640 135412752 3221224560 3221222316 134851928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/4405/statm): 3801 3575 241 241 0 3560 0
[pid=4405] vsize: 15204
Current children cumulated CPU time (s) 19.92
Current children cumulated vsize (Kb) 15204

[startup+30.0049 s]
Raw data (loadavg): 0.82 0.81 0.90 2/56 4405
Raw data (/proc/4405/stat): 4405 (galena) R 4404 4405 20115 0 -1 0 8069 0 0 0 2955 33 0 0 25 0 1 0 1844020841 18399232 4261 4294967295 134512640 135412752 3221224560 3221222112 134729317 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/4405/statm): 4492 4261 241 241 0 4251 0
[pid=4405] vsize: 17968
Current children cumulated CPU time (s) 29.88
Current children cumulated vsize (Kb) 17968

[startup+40.0056 s]
Raw data (loadavg): 0.85 0.81 0.90 2/56 4405
Raw data (/proc/4405/stat): 4405 (galena) R 4404 4405 20115 0 -1 0 10400 0 0 0 3941 43 0 0 25 0 1 0 1844020841 21368832 4988 4294967295 134512640 135412752 3221224560 3221221648 134832649 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/4405/statm): 5217 4988 241 241 0 4976 0
[pid=4405] vsize: 20868
Current children cumulated CPU time (s) 39.84
Current children cumulated vsize (Kb) 20868

[startup+50.0063 s]
Raw data (loadavg): 0.87 0.82 0.90 2/56 4405
Raw data (/proc/4405/stat): 4405 (galena) R 4404 4405 20115 0 -1 0 15481 0 0 0 4923 58 0 0 25 0 1 0 1844020841 33148928 7361 4294967295 134512640 135412752 3221224560 3221222656 134621657 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/4405/statm): 8093 7361 241 241 0 7852 0
[pid=4405] vsize: 32372
Current children cumulated CPU time (s) 49.81
Current children cumulated vsize (Kb) 32372
One traced child (pid=4405) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 54.5988
CPU time (s): 54.3867
CPU user time (s): 53.4199
CPU system time (s): 0.966853
CPU usage (%): 99.6116
Max. virtual memory (cumulated for all children) (Kb): 32372

Verifier Data

ERROR: no interpretation found !