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 7941

Launcher Data

LAUNCH ON wulflinc24 THE 2005-09-20 15:24:04 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=5118 boxname=wulflinc24 idbench=430 idsolver=5 numberseed=0
MD5SUM SOLVER: 104a539e9cf344a86ca96d2c957e7d7f  /oldhome/oroussel/solvers/Pueblo
MD5SUM BENCH:  e4d850251a185eefeba808334bb200f5  /oldhome/oroussel/tmp/wulflinc24/normalized-mps-v2-20-10-fit2d.opb
REAL COMMAND:  Pueblo
IDLAUNCH: 5118
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.080
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.080
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:        804996 kB
Buffers:         31068 kB
Cached:         169936 kB
SwapCached:        820 kB
Active:          85696 kB
Inactive:       118040 kB
HighTotal:      131008 kB
HighFree:         3808 kB
LowTotal:       903652 kB
LowFree:        801188 kB
SwapTotal:     2097892 kB
SwapFree:      2096616 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5752 kB
Slab:            20196 kB
Committed_AS:    64172 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 15:24:32 (client local time) WITH STATUS 0 IN 26.247 SECONDS
stats: 5118 7 26.247 0

Solver Data

c Pueblo version 1.3 (July 2005)
c Developed @ University of Michigan, Ann Arbor, MI
c  by Hossein Sheini
c sum of numeric constants out of range [1]
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/18886/stat): 18886 (Pueblo) R 18885 18886 20728 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1859593089 167936 3 4294967295 134512640 134578447 3221224624 3221224624 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18886/statm): 41 3 40 18 0 23 0
[pid=18886] vsize: 164
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libstdc++.so.5
open syscall for file tls/i686/libstdc++.so.5
open syscall for file tls/mmx/libstdc++.so.5
open syscall for file tls/libstdc++.so.5
open syscall for file i686/mmx/libstdc++.so.5
open syscall for file i686/libstdc++.so.5
open syscall for file mmx/libstdc++.so.5
open syscall for file libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/tls/i686/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/tls/mmx/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/tls/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/i686/mmx/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/i686/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/mmx/libstdc++.so.5
open syscall for file /oldhome/oroussel/lib/libstdc++.so.5
open syscall for file /etc/ld.so.cache
open syscall for file /usr/lib/libstdc++.so.5
open syscall for file tls/i686/mmx/libm.so.6
open syscall for file tls/i686/libm.so.6
open syscall for file tls/mmx/libm.so.6
open syscall for file tls/libm.so.6
open syscall for file i686/mmx/libm.so.6
open syscall for file i686/libm.so.6
open syscall for file mmx/libm.so.6
open syscall for file libm.so.6
open syscall for file /oldhome/oroussel/lib/libm.so.6
open syscall for file /lib/tls/libm.so.6
open syscall for file tls/i686/mmx/libgcc_s.so.1
open syscall for file tls/i686/libgcc_s.so.1
open syscall for file tls/mmx/libgcc_s.so.1
open syscall for file tls/libgcc_s.so.1
open syscall for file i686/mmx/libgcc_s.so.1
open syscall for file i686/libgcc_s.so.1
open syscall for file mmx/libgcc_s.so.1
open syscall for file libgcc_s.so.1
open syscall for file /oldhome/oroussel/lib/libgcc_s.so.1
open syscall for file /lib/libgcc_s.so.1
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /lib/tls/libc.so.6

[startup+10.0042 s]
Raw data (loadavg): 0.75 0.89 0.89 2/56 18886
Raw data (/proc/18886/stat): 18886 (Pueblo) R 18885 18886 20728 0 -1 0 5645 0 0 0 956 27 0 0 25 0 1 0 1859593089 24731648 5611 4294967295 134512640 134578447 3221224624 3221092096 134534335 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18886/statm): 6038 5611 566 18 0 6020 0
[pid=18886] vsize: 24152
Current children cumulated CPU time (s) 9.83
Current children cumulated vsize (Kb) 24152

[startup+20.0049 s]
Raw data (loadavg): 0.79 0.89 0.89 2/56 18886
Raw data (/proc/18886/stat): 18886 (Pueblo) R 18885 18886 20728 0 -1 0 8178 0 0 0 1923 46 0 0 25 0 1 0 1859593089 35098624 8144 4294967295 134512640 134578447 3221224624 3221092092 1075310604 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/18886/statm): 8569 8144 566 18 0 8551 0
[pid=18886] vsize: 34276
Current children cumulated CPU time (s) 19.69
Current children cumulated vsize (Kb) 34276
One traced child (pid=18886) exited with status: 0
All traced children have exited ! Game is over.

Child status: 0
Real time (s): 26.6182
CPU time (s): 26.247
CPU user time (s): 25.5731
CPU system time (s): 0.673897
CPU usage (%): 98.6053
Max. virtual memory (cumulated for all children) (Kb): 34276

Verifier Data

ERROR: no interpretation found !