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-v2-13-7-25fv47.opb
MD5SUMc9f866c0690dc1af70eb2575fc6ba22f
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 12780
Biggest coefficient in the objective function 524288000000
Number of bits for the biggest coefficient in the objective function 39
Sum of the numbers in the objective function 10374607341450
Number of bits of the sum of numbers in the objective function 44
Biggest number in a constraint 125278616027136
Number of bits of the biggest number in a constraint 47
Biggest sum of numbers in a constraint 793896153991050
Number of bits of the biggest sum of numbers50
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark21.1138
Number of variables31420
Total number of constraints820
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 constraints820
Minimum length of a constraint20
Maximum length of a constraint6800

Trace number 5073

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-19 22:34:29 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=870 boxname=wulflinc18 idbench=870 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  c9f866c0690dc1af70eb2575fc6ba22f  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-25fv47.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-25fv47.opb
IDLAUNCH: 870
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.177
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		: 451.177
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:        869536 kB
Buffers:         40600 kB
Cached:          89320 kB
SwapCached:        844 kB
Active:          72208 kB
Inactive:        60288 kB
HighTotal:      131008 kB
HighFree:        39200 kB
LowTotal:       903652 kB
LowFree:        830336 kB
SwapTotal:     2097892 kB
SwapFree:      2096548 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5768 kB
Slab:            26872 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 22:34:51 (client local time) WITH STATUS 20 IN 21.1138 SECONDS
stats: 870 7 21.1138 20

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 31420 variables and 1331 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 21.047 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/22075/stat): 22075 (bsolo) R 22074 22075 31027 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1853500149 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/22075/statm): 107 3 90 68 0 39 0
[pid=22075] 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 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
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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
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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/wulflinc18/normalized-mps-v2-13-7-25fv47.opb

[startup+10.0041 s]
Raw data (loadavg): 0.93 0.97 0.99 2/56 22075
Raw data (/proc/22075/stat): 22075 (bsolo) R 22074 22075 31027 0 -1 0 22624 0 0 0 924 58 0 0 25 0 1 0 1853500149 95383552 22433 4294967295 134512640 134736556 3221224560 3221221260 1077195880 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/22075/statm): 23287 22433 1116 68 0 23219 0
[pid=22075] vsize: 93148
Current children cumulated CPU time (s) 9.82
Current children cumulated vsize (Kb) 93148

[startup+20.005 s]
Raw data (loadavg): 0.94 0.97 0.99 2/56 22075
Raw data (/proc/22075/stat): 22075 (bsolo) R 22074 22075 31027 0 -1 0 27109 0 0 0 1909 71 0 0 25 0 1 0 1853500149 113901568 26914 4294967295 134512640 134736556 3221224560 3221223068 1077399560 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/22075/statm): 27808 26914 1116 68 0 27740 0
[pid=22075] vsize: 111232
Current children cumulated CPU time (s) 19.8
Current children cumulated vsize (Kb) 111232
One traced child (pid=22075) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 21.3278
CPU time (s): 21.1138
CPU user time (s): 20.2689
CPU system time (s): 0.844871
CPU usage (%): 98.9965
Max. virtual memory (cumulated for all children) (Kb): 111232

Verifier Data

ERROR: no interpretation found !