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/plato.asu.edu/pub/milp/normalized-mps-v2-13-7-neos3.opb
MD5SUM640a68756f6bc046860dd4d0fa3890ca
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 105
Biggest coefficient in the objective function 1048576
Number of bits for the biggest coefficient in the objective function 21
Sum of the numbers in the objective function 10485755
Number of bits of the sum of numbers in the objective function 24
Biggest number in a constraint 2396687647113216000
Number of bits of the biggest number in a constraint 62
Biggest sum of numbers in a constraint 282492798299765243904
Number of bits of the biggest sum of numbers68
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables28623
Total number of constraints2841
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)1377
Number of constraints which are nor clauses,nor cardinality constraints1464
Minimum length of a constraint1
Maximum length of a constraint3188

Trace number 5316

Launcher Data

LAUNCH ON wulflinc17 THE 2005-09-20 00:40:21 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1114 boxname=wulflinc17 idbench=1114 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  640a68756f6bc046860dd4d0fa3890ca  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-13-7-neos3.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-13-7-neos3.opb
IDLAUNCH: 1114
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        882244 kB
Buffers:         41248 kB
Cached:          81152 kB
SwapCached:        544 kB
Active:          63132 kB
Inactive:        61760 kB
HighTotal:      131008 kB
HighFree:        47292 kB
LowTotal:       903652 kB
LowFree:        834952 kB
SwapTotal:     2097892 kB
SwapFree:      2096672 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5688 kB
Slab:            21932 kB
Committed_AS:    64280 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 00:40:22 (client local time) WITH STATUS 0 IN 0.176972 SECONDS
stats: 1114 7 0.176972 0

Solver Data

c INFO: OSL Context initialized.
c Parse Error 8
c Problem opening input file name: /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-13-7-neos3.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/4440/stat): 4440 (bsolo) R 4439 4440 19316 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1854314341 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/4440/statm): 107 3 90 68 0 39 0
[pid=4440] vsize: 428
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libosl.so
open syscall for file tls/i686/libosl.so
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open syscall for file libosl.so
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libosl.so
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open syscall for file mmx/libstdc++-libc6.2-2.so.3
open syscall for file libstdc++-libc6.2-2.so.3
open syscall for file /oldhome/oroussel/lib/libstdc++-libc6.2-2.so.3
open syscall for file /etc/ld.so.cache
open syscall for file /usr/lib/libstdc++-libc6.2-2.so.3
open syscall for file tls/i686/mmx/libm.so.6
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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/libpthread.so.0
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open syscall for file i686/mmx/libpthread.so.0
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open syscall for file mmx/libpthread.so.0
open syscall for file libpthread.so.0
open syscall for file /oldhome/oroussel/lib/libpthread.so.0
open syscall for file /lib/tls/libpthread.so.0
open syscall for file tls/i686/mmx/libc.so.6
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open syscall for file i686/mmx/libc.so.6
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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
open syscall for file tls/i686/mmx/libgcc_s.so.1
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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
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open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-13-7-neos3.opb
One traced child (pid=4440) exited with status: 0
All traced children have exited ! Game is over.

Child status: 0
Real time (s): 0.24243
CPU time (s): 0.176972
CPU user time (s): 0.135979
CPU system time (s): 0.040993
CPU usage (%): 72.9992
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

ERROR: no interpretation found !