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-ship12s.opb
MD5SUM8b36f38cb0ceb42bd2113a818ef52485
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 82890
Biggest coefficient in the objective function 1511023181824000
Number of bits for the biggest coefficient in the objective function 51
Sum of the numbers in the objective function 204819735955723812
Number of bits of the sum of numbers in the objective function 58
Biggest number in a constraint 1511023181824000
Number of bits of the biggest number in a constraint 51
Biggest sum of numbers in a constraint 204819735955723812
Number of bits of the biggest sum of numbers58
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark18.0513
Number of variables82890
Total number of constraints1042
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 constraints1042
Minimum length of a constraint30
Maximum length of a constraint1470

Trace number 491

Launcher Data

LAUNCH ON wulflinc29 THE 2005-09-18 10:54:55 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=477 boxname=wulflinc29 idbench=477 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  8b36f38cb0ceb42bd2113a818ef52485  /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-ship12s.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-ship12s.opb
IDLAUNCH: 477
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.020
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		: 451.020
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:        944360 kB
Buffers:         29540 kB
Cached:          30800 kB
SwapCached:        792 kB
Active:          18180 kB
Inactive:        44860 kB
HighTotal:      131008 kB
HighFree:        98924 kB
LowTotal:       903652 kB
LowFree:        845436 kB
SwapTotal:     2097892 kB
SwapFree:      2096664 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5736 kB
Slab:            21464 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 10:55:40 (client local time) WITH STATUS 20 IN 44.2653 SECONDS
stats: 477 7 44.2653 20

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 82890 variables and 1693 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 44.151 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/21406/stat): 21406 (bsolo) R 21405 21406 19818 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1840684512 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/21406/statm): 107 3 90 68 0 39 0
[pid=21406] 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
open syscall for file tls/mmx/libosl.so
open syscall for file tls/libosl.so
open syscall for file i686/mmx/libosl.so
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 tls/i686/mmx/libstdc++-libc6.2-2.so.3
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open syscall for file i686/mmx/libstdc++-libc6.2-2.so.3
open syscall for file i686/libstdc++-libc6.2-2.so.3
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 tls/libpthread.so.0
open syscall for file i686/mmx/libpthread.so.0
open syscall for file i686/libpthread.so.0
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
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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
open syscall for file tls/i686/mmx/libgcc_s.so.1
open syscall for file tls/i686/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/wulflinc29/normalized-mps-v2-20-10-ship12s.opb

[startup+10.0031 s]
Raw data (loadavg): 0.94 0.97 0.95 2/56 21406
Raw data (/proc/21406/stat): 21406 (bsolo) R 21405 21406 19818 0 -1 0 41558 0 0 0 873 100 0 0 25 0 1 0 1840684512 172744704 41154 4294967295 134512640 134736556 3221224560 3221222792 1077364304 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/21406/statm): 42174 41154 1116 68 0 42106 0
[pid=21406] vsize: 168696
Current children cumulated CPU time (s) 9.73
Current children cumulated vsize (Kb) 168696

[startup+20.0039 s]
Raw data (loadavg): 0.95 0.97 0.95 2/56 21406
Raw data (/proc/21406/stat): 21406 (bsolo) R 21405 21406 19818 0 -1 0 43737 0 0 0 1864 107 0 0 25 0 1 0 1840684512 181673984 43333 4294967295 134512640 134736556 3221224560 3221222812 1077364355 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/21406/statm): 44354 43333 1116 68 0 44286 0
[pid=21406] vsize: 177416
Current children cumulated CPU time (s) 19.71
Current children cumulated vsize (Kb) 177416

[startup+30.0047 s]
Raw data (loadavg): 0.95 0.97 0.95 2/56 21406
Raw data (/proc/21406/stat): 21406 (bsolo) R 21405 21406 19818 0 -1 0 45470 0 0 0 2858 111 0 0 25 0 1 0 1840684512 188850176 45066 4294967295 134512640 134736556 3221224560 3221223072 134572994 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/21406/statm): 46106 45066 1116 68 0 46038 0
[pid=21406] vsize: 184424
Current children cumulated CPU time (s) 29.69
Current children cumulated vsize (Kb) 184424

[startup+40.0055 s]
Raw data (loadavg): 0.96 0.97 0.95 2/56 21406
Raw data (/proc/21406/stat): 21406 (bsolo) R 21405 21406 19818 0 -1 0 47096 0 0 0 3851 116 0 0 25 0 1 0 1840684512 195502080 46692 4294967295 134512640 134736556 3221224560 3221223144 1077378037 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/21406/statm): 47730 46695 1116 68 0 47662 0
[pid=21406] vsize: 190920
Current children cumulated CPU time (s) 39.67
Current children cumulated vsize (Kb) 190920
One traced child (pid=21406) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 44.6235
CPU time (s): 44.2653
CPU user time (s): 42.8065
CPU system time (s): 1.45878
CPU usage (%): 99.1973
Max. virtual memory (cumulated for all children) (Kb): 190920

Verifier Data

ERROR: no interpretation found !