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/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-80bau3b.opb
MD5SUM16a606cf9ab6b9dba681e237f3d29f84
Bench Categoryoptimization, big integers (OPTBIGINT)
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 126788
Biggest coefficient in the objective function 175552593920000
Number of bits for the biggest coefficient in the objective function 48
Sum of the numbers in the objective function 8868947507751438
Number of bits of the sum of numbers in the objective function 53
Biggest number in a constraint 175552593920000
Number of bits of the biggest number in a constraint 48
Biggest sum of numbers in a constraint 8868947507751438
Number of bits of the biggest sum of numbers53
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark32.618
Number of variables157082
Total number of constraints5220
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 constraints5220
Minimum length of a constraint7
Maximum length of a constraint2220

Trace number 5077

Launcher Data

LAUNCH ON wulflinc22 THE 2005-09-19 22:34:37 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=871 boxname=wulflinc22 idbench=871 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  16a606cf9ab6b9dba681e237f3d29f84  /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-80bau3b.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-80bau3b.opb
IDLAUNCH: 871
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.031
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		: 451.031
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:        900468 kB
Buffers:          1920 kB
Cached:         104576 kB
SwapCached:        536 kB
Active:          44976 kB
Inactive:        64128 kB
HighTotal:      131008 kB
HighFree:        25312 kB
LowTotal:       903652 kB
LowFree:        875156 kB
SwapTotal:     2097892 kB
SwapFree:      2096832 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5868 kB
Slab:            19292 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 22:35:21 (client local time) WITH STATUS 20 IN 42.7865 SECONDS
stats: 871 7 42.7865 20

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 157462 variables and 5189 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 42.517 s

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/9788/stat): 9788 (bsolo) R 9787 9788 21452 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1853535476 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9788/statm): 107 3 90 68 0 39 0
[pid=9788] 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 i686/libosl.so
open syscall for file mmx/libosl.so
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 i686/mmx/libstdc++-libc6.2-2.so.3
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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 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/libpthread.so.0
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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
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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
open syscall for file /lib/libgcc_s.so.1
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open syscall for file /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-80bau3b.opb

[startup+10.0026 s]
Raw data (loadavg): 0.94 0.98 0.99 2/56 9788
Raw data (/proc/9788/stat): 9788 (bsolo) R 9787 9788 21452 0 -1 0 89214 0 0 0 744 213 0 0 25 0 1 0 1853535476 367480832 88810 4294967295 134512640 134736556 3221224560 3221222836 1077374598 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9788/statm): 89717 88811 1116 68 0 89649 0
[pid=9788] vsize: 358868
Current children cumulated CPU time (s) 9.57
Current children cumulated vsize (Kb) 358868

[startup+20.0033 s]
Raw data (loadavg): 0.95 0.98 0.99 2/56 9788
Raw data (/proc/9788/stat): 9788 (bsolo) R 9787 9788 21452 0 -1 0 105834 0 0 0 1698 250 0 0 25 0 1 0 1853535476 432291840 104183 4294967295 134512640 134736556 3221224560 3221221260 1077191463 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9788/statm): 105540 104183 1116 68 0 105472 0
[pid=9788] vsize: 422160
Current children cumulated CPU time (s) 19.48
Current children cumulated vsize (Kb) 422160

[startup+30.004 s]
Raw data (loadavg): 0.95 0.98 0.99 2/56 9788
Raw data (/proc/9788/stat): 9788 (bsolo) R 9787 9788 21452 0 -1 0 112497 0 0 0 2672 270 0 0 25 0 1 0 1853535476 459517952 110846 4294967295 134512640 134736556 3221224560 3221222792 1077364312 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9788/statm): 112187 110846 1116 68 0 112119 0
[pid=9788] vsize: 448748
Current children cumulated CPU time (s) 29.42
Current children cumulated vsize (Kb) 448748

[startup+40.0038 s]
Raw data (loadavg): 0.96 0.98 0.99 2/56 9788
Raw data (/proc/9788/stat): 9788 (bsolo) R 9787 9788 21452 0 -1 0 123538 0 0 0 3636 298 0 0 25 0 1 0 1853535476 504426496 121887 4294967295 134512640 134736556 3221224560 3221223136 134539910 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9788/statm): 123151 121887 1116 68 0 123083 0
[pid=9788] vsize: 492604
Current children cumulated CPU time (s) 39.34
Current children cumulated vsize (Kb) 492604
One traced child (pid=9788) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 43.4868
CPU time (s): 42.7865
CPU user time (s): 39.1211
CPU system time (s): 3.66544
CPU usage (%): 98.3896
Max. virtual memory (cumulated for all children) (Kb): 492604

Verifier Data

ERROR: no interpretation found !