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-v2-20-10-80bau3b.opb
MD5SUM482f3c6a016323a565c292702d2c5673
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 183640
Biggest coefficient in the objective function 179765856174080000
Number of bits for the biggest coefficient in the objective function 58
Sum of the numbers in the objective function 6977628092477113102
Number of bits of the sum of numbers in the objective function 63
Biggest number in a constraint 179765856174080000
Number of bits of the biggest number in a constraint 58
Biggest sum of numbers in a constraint 6977628092477113102
Number of bits of the biggest sum of numbers63
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark42.7925
Number of variables228990
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 constraint10
Maximum length of a constraint3330

Trace number 498

Launcher Data

LAUNCH ON wulflinc30 THE 2005-09-18 10:57:12 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=487 boxname=wulflinc30 idbench=487 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  482f3c6a016323a565c292702d2c5673  /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-80bau3b.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc30/normalized-mps-v2-20-10-80bau3b.opb
IDLAUNCH: 487
/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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        918004 kB
Buffers:         36584 kB
Cached:          49328 kB
SwapCached:        788 kB
Active:          73048 kB
Inactive:        15564 kB
HighTotal:      131008 kB
HighFree:        80864 kB
LowTotal:       903652 kB
LowFree:        837140 kB
SwapTotal:     2097892 kB
SwapFree:      2096636 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5732 kB
Slab:            22384 kB
Committed_AS:    64172 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 10:58:16 (client local time) WITH STATUS 20 IN 62.7305 SECONDS
stats: 487 7 62.7305 20

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 229560 variables and 5191 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 62.434 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/7311/stat): 7311 (bsolo) R 7310 7311 5245 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1840696177 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/7311/statm): 107 3 90 68 0 39 0
[pid=7311] 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 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 /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 i686/libgcc_s.so.1
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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/wulflinc30/normalized-mps-v2-20-10-80bau3b.opb

[startup+10.0041 s]
Raw data (loadavg): 0.92 0.97 0.95 2/56 7311
Raw data (/proc/7311/stat): 7311 (bsolo) R 7310 7311 5245 0 -1 0 72677 0 0 0 783 181 0 0 25 0 1 0 1840696177 299696128 72273 4294967295 134512640 134736556 3221224560 3221223344 134567559 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7311/statm): 73168 72273 1116 68 0 73100 0
[pid=7311] vsize: 292672
Current children cumulated CPU time (s) 9.64
Current children cumulated vsize (Kb) 292672

[startup+20.0039 s]
Raw data (loadavg): 0.93 0.97 0.95 2/56 7311
Raw data (/proc/7311/stat): 7311 (bsolo) R 7310 7311 5245 0 -1 0 110219 0 0 0 1679 271 0 0 25 0 1 0 1840696177 447897600 108234 4294967295 134512640 134736556 3221224560 3221221324 1077090922 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7311/statm): 109350 108234 1116 68 0 109282 0
[pid=7311] vsize: 437400
Current children cumulated CPU time (s) 19.5
Current children cumulated vsize (Kb) 437400

[startup+30.0047 s]
Raw data (loadavg): 0.94 0.97 0.95 2/56 7311
Raw data (/proc/7311/stat): 7311 (bsolo) R 7310 7311 5245 0 -1 0 113438 0 0 0 2664 281 0 0 25 0 1 0 1840696177 461197312 111453 4294967295 134512640 134736556 3221224560 3221223304 134560217 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7311/statm): 112597 111453 1116 68 0 112529 0
[pid=7311] vsize: 450388
Current children cumulated CPU time (s) 29.45
Current children cumulated vsize (Kb) 450388

[startup+40.0046 s]
Raw data (loadavg): 0.95 0.97 0.95 2/56 7311
Raw data (/proc/7311/stat): 7311 (bsolo) R 7310 7311 5245 0 -1 0 119429 0 0 0 3641 299 0 0 25 0 1 0 1840696177 485507072 117444 4294967295 134512640 134736556 3221224560 3221222444 1077245729 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7311/statm): 118532 117444 1116 68 0 118464 0
[pid=7311] vsize: 474128
Current children cumulated CPU time (s) 39.4
Current children cumulated vsize (Kb) 474128

[startup+50.0054 s]
Raw data (loadavg): 0.96 0.97 0.95 2/56 7311
Raw data (/proc/7311/stat): 7311 (bsolo) R 7310 7311 5245 0 -1 0 126092 0 0 0 4615 320 0 0 25 0 1 0 1840696177 512659456 124107 4294967295 134512640 134736556 3221224560 3221223136 134539937 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7311/statm): 125161 124107 1116 68 0 125093 0
[pid=7311] vsize: 500644
Current children cumulated CPU time (s) 49.35
Current children cumulated vsize (Kb) 500644

[startup+60.0052 s]
Raw data (loadavg): 0.96 0.97 0.95 2/56 7311
Raw data (/proc/7311/stat): 7311 (bsolo) R 7310 7311 5245 0 -1 0 135544 0 0 0 5582 345 0 0 25 0 1 0 1840696177 551108608 133559 4294967295 134512640 134736556 3221224560 3221222812 1077364355 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7311/statm): 134548 133559 1116 68 0 134480 0
[pid=7311] vsize: 538192
Current children cumulated CPU time (s) 59.27
Current children cumulated vsize (Kb) 538192
One traced child (pid=7311) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 63.4953
CPU time (s): 62.7305
CPU user time (s): 58.3901
CPU system time (s): 4.34034
CPU usage (%): 98.7954
Max. virtual memory (cumulated for all children) (Kb): 538192

Verifier Data

ERROR: no interpretation found !