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-ship08l.opb
MD5SUM0a05016ca1456223450d9ec498a510c4
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 85660
Biggest coefficient in the objective function 425249996800
Number of bits for the biggest coefficient in the objective function 39
Sum of the numbers in the objective function 200022778005600
Number of bits of the sum of numbers in the objective function 48
Biggest number in a constraint 425249996800
Number of bits of the biggest number in a constraint 39
Biggest sum of numbers in a constraint 200022778005600
Number of bits of the biggest sum of numbers48
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark6.77897
Number of variables85660
Total number of constraints712
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 constraints712
Minimum length of a constraint20
Maximum length of a constraint1700

Trace number 5065

Launcher Data

LAUNCH ON wulflinc23 THE 2005-09-19 22:31:22 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=858 boxname=wulflinc23 idbench=858 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  0a05016ca1456223450d9ec498a510c4  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-13-7-ship08l.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-13-7-ship08l.opb
IDLAUNCH: 858
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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		: 451.037
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:        909336 kB
Buffers:          6656 kB
Cached:          90056 kB
SwapCached:        800 kB
Active:          35212 kB
Inactive:        64160 kB
HighTotal:      131008 kB
HighFree:        36876 kB
LowTotal:       903652 kB
LowFree:        872460 kB
SwapTotal:     2097136 kB
SwapFree:      2095856 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5692 kB
Slab:            20064 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-19 22:32:24 (client local time) WITH STATUS 20 IN 61.2787 SECONDS
stats: 858 7 61.2787 20

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 85660 variables and 1123 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 61.133 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/24119/stat): 24119 (bsolo) R 24118 24119 5299 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1853526150 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/24119/statm): 107 3 90 68 0 39 0
[pid=24119] vsize: 428
open syscall for file /etc/ld.so.preload
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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 libpthread.so.0
open syscall for file /oldhome/oroussel/lib/libpthread.so.0
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open syscall for file /lib/tls/libc.so.6
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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/wulflinc23/normalized-mps-v2-13-7-ship08l.opb

[startup+10.0033 s]
Raw data (loadavg): 0.87 0.97 0.99 2/56 24119
Raw data (/proc/24119/stat): 24119 (bsolo) R 24118 24119 5299 0 -1 0 59318 0 0 0 821 146 0 0 25 0 1 0 1853526150 245579776 58914 4294967295 134512640 134736556 3221224560 3221222788 1077358979 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/24119/statm): 59956 58914 1116 68 0 59888 0
[pid=24119] vsize: 239824
Current children cumulated CPU time (s) 9.67
Current children cumulated vsize (Kb) 239824

[startup+20.0039 s]
Raw data (loadavg): 0.89 0.97 0.99 2/56 24119
Raw data (/proc/24119/stat): 24119 (bsolo) R 24118 24119 5299 0 -1 0 62303 0 0 0 1810 155 0 0 25 0 1 0 1853526150 255660032 61385 4294967295 134512640 134736556 3221224560 3221223136 134539946 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/24119/statm): 62417 61385 1116 68 0 62349 0
[pid=24119] vsize: 249668
Current children cumulated CPU time (s) 19.65
Current children cumulated vsize (Kb) 249668

[startup+30.0036 s]
Raw data (loadavg): 0.91 0.97 0.99 2/56 24119
Raw data (/proc/24119/stat): 24119 (bsolo) R 24118 24119 5299 0 -1 0 63536 0 0 0 2804 159 0 0 25 0 1 0 1853526150 260673536 62618 4294967295 134512640 134736556 3221224560 3221221396 1077360673 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/24119/statm): 63641 62618 1116 68 0 63573 0
[pid=24119] vsize: 254564
Current children cumulated CPU time (s) 29.63
Current children cumulated vsize (Kb) 254564

[startup+40.0042 s]
Raw data (loadavg): 0.92 0.97 0.99 2/56 24119
Raw data (/proc/24119/stat): 24119 (bsolo) R 24118 24119 5299 0 -1 0 64485 0 0 0 3801 162 0 0 25 0 1 0 1853526150 264609792 63567 4294967295 134512640 134736556 3221224560 3221223068 1077399564 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/24119/statm): 64602 63567 1116 68 0 64534 0
[pid=24119] vsize: 258408
Current children cumulated CPU time (s) 39.63
Current children cumulated vsize (Kb) 258408

[startup+50.0048 s]
Raw data (loadavg): 0.93 0.97 0.99 2/56 24119
Raw data (/proc/24119/stat): 24119 (bsolo) R 24118 24119 5299 0 -1 0 65593 0 0 0 4795 167 0 0 25 0 1 0 1853526150 269074432 64675 4294967295 134512640 134736556 3221224560 3221222444 1077246305 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/24119/statm): 65692 64675 1116 68 0 65624 0
[pid=24119] vsize: 262768
Current children cumulated CPU time (s) 49.62
Current children cumulated vsize (Kb) 262768

[startup+60.0055 s]
Raw data (loadavg): 0.94 0.97 0.99 2/56 24119
Raw data (/proc/24119/stat): 24119 (bsolo) R 24118 24119 5299 0 -1 0 66635 0 0 0 5790 170 0 0 25 0 1 0 1853526150 273420288 65717 4294967295 134512640 134736556 3221224560 3221222444 1077246298 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/24119/statm): 66753 65717 1116 68 0 66685 0
[pid=24119] vsize: 267012
Current children cumulated CPU time (s) 59.6
Current children cumulated vsize (Kb) 267012
One traced child (pid=24119) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 61.6799
CPU time (s): 61.2787
CPU user time (s): 59.253
CPU system time (s): 2.02569
CPU usage (%): 99.3494
Max. virtual memory (cumulated for all children) (Kb): 267012

Verifier Data

ERROR: no interpretation found !