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-pilot87.opb
MD5SUM9658bbaea81a963c53a05a25fe9ca956
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 7860
Biggest coefficient in the objective function 1728189562880
Number of bits for the biggest coefficient in the objective function 41
Sum of the numbers in the objective function 73714762784766
Number of bits of the sum of numbers in the objective function 47
Biggest number in a constraint 524288000000000
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 1292497795394025
Number of bits of the biggest sum of numbers51
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark4.37433
Number of variables78247
Total number of constraints3645
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 constraints3645
Minimum length of a constraint7
Maximum length of a constraint5778

Trace number 5082

Launcher Data

LAUNCH ON wulflinc28 THE 2005-09-19 22:35:29 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=875 boxname=wulflinc28 idbench=875 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  9658bbaea81a963c53a05a25fe9ca956  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-13-7-pilot87.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-13-7-pilot87.opb
IDLAUNCH: 875
/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:        807216 kB
Buffers:         36068 kB
Cached:         162272 kB
SwapCached:        696 kB
Active:          97724 kB
Inactive:       103184 kB
HighTotal:      131008 kB
HighFree:         3780 kB
LowTotal:       903652 kB
LowFree:        803436 kB
SwapTotal:     2097640 kB
SwapFree:      2096372 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5816 kB
Slab:            20824 kB
Committed_AS:    64136 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 22:36:50 (client local time) WITH STATUS 20 IN 79.4069 SECONDS
stats: 875 7 79.4069 20

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 78267 variables and 3808 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 79.24 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/13603/stat): 13603 (bsolo) R 13602 13603 20115 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1853550768 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/13603/statm): 107 3 90 68 0 39 0
[pid=13603] vsize: 428
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libosl.so
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open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libosl.so
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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
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open syscall for file /lib/tls/libm.so.6
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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 /lib/tls/libc.so.6
open syscall for file tls/i686/mmx/libgcc_s.so.1
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open syscall for file /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-13-7-pilot87.opb

[startup+10.0028 s]
Raw data (loadavg): 0.95 0.98 0.99 2/56 13603
Raw data (/proc/13603/stat): 13603 (bsolo) R 13602 13603 20115 0 -1 0 41110 0 0 0 880 97 0 0 25 0 1 0 1853550768 171139072 40829 4294967295 134512640 134736556 3221224560 3221223136 134539937 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/13603/statm): 41782 40829 1116 68 0 41714 0
[pid=13603] vsize: 167128
Current children cumulated CPU time (s) 9.77
Current children cumulated vsize (Kb) 167128

[startup+20.0025 s]
Raw data (loadavg): 0.95 0.98 0.99 2/56 13603
Raw data (/proc/13603/stat): 13603 (bsolo) R 13602 13603 20115 0 -1 0 48447 0 0 0 1857 114 0 0 25 0 1 0 1853550768 201175040 48162 4294967295 134512640 134736556 3221224560 3221223364 134569616 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/13603/statm): 49115 48162 1116 68 0 49047 0
[pid=13603] vsize: 196460
Current children cumulated CPU time (s) 19.71
Current children cumulated vsize (Kb) 196460

[startup+30.0032 s]
Raw data (loadavg): 0.96 0.98 0.99 2/56 13603
Raw data (/proc/13603/stat): 13603 (bsolo) R 13602 13603 20115 0 -1 0 56430 0 0 0 2832 133 0 0 25 0 1 0 1853550768 232370176 55773 4294967295 134512640 134736556 3221224560 3221223072 134572994 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/13603/statm): 56731 55773 1116 68 0 56663 0
[pid=13603] vsize: 226924
Current children cumulated CPU time (s) 29.65
Current children cumulated vsize (Kb) 226924

[startup+40.0039 s]
Raw data (loadavg): 0.97 0.98 0.99 2/56 13603
Raw data (/proc/13603/stat): 13603 (bsolo) R 13602 13603 20115 0 -1 0 61219 0 0 0 3813 147 0 0 25 0 1 0 1853550768 252162048 60562 4294967295 134512640 134736556 3221224560 3221223056 134572843 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/13603/statm): 61563 60562 1116 68 0 61495 0
[pid=13603] vsize: 246252
Current children cumulated CPU time (s) 39.6
Current children cumulated vsize (Kb) 246252

[startup+50.0046 s]
Raw data (loadavg): 0.97 0.98 0.99 2/56 13603
Raw data (/proc/13603/stat): 13603 (bsolo) R 13602 13603 20115 0 -1 0 68744 0 0 0 4788 166 0 0 25 0 1 0 1853550768 282886144 67835 4294967295 134512640 134736556 3221224560 3221221260 1077195825 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/13603/statm): 69064 67835 1116 68 0 68996 0
[pid=13603] vsize: 276256
Current children cumulated CPU time (s) 49.54
Current children cumulated vsize (Kb) 276256

[startup+60.0052 s]
Raw data (loadavg): 0.97 0.98 0.99 2/56 13603
Raw data (/proc/13603/stat): 13603 (bsolo) R 13602 13603 20115 0 -1 0 73149 0 0 0 5772 178 0 0 25 0 1 0 1853550768 301166592 72234 4294967295 134512640 134736556 3221224560 3221222792 1077364285 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/13603/statm): 73527 72234 1116 68 0 73459 0
[pid=13603] vsize: 294108
Current children cumulated CPU time (s) 59.5
Current children cumulated vsize (Kb) 294108

[startup+70.0049 s]
Raw data (loadavg): 0.98 0.98 0.99 2/56 13603
Raw data (/proc/13603/stat): 13603 (bsolo) R 13602 13603 20115 0 -1 0 75369 0 0 0 6761 186 0 0 25 0 1 0 1853550768 310501376 74449 4294967295 134512640 134736556 3221224560 3221221228 1077359235 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/13603/statm): 75806 74449 1116 68 0 75738 0
[pid=13603] vsize: 303224
Current children cumulated CPU time (s) 69.47
Current children cumulated vsize (Kb) 303224
One traced child (pid=13603) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 79.9783
CPU time (s): 79.4069
CPU user time (s): 77.0883
CPU system time (s): 2.31865
CPU usage (%): 99.2856
Max. virtual memory (cumulated for all children) (Kb): 303224

Verifier Data

ERROR: no interpretation found !