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-etamacro.opb
MD5SUMf6aee0205ed0fd82be74ca5b868634a5
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 979
Biggest coefficient in the objective function 25202799411200000
Number of bits for the biggest coefficient in the objective function 55
Sum of the numbers in the objective function 212191388834595325
Number of bits of the sum of numbers in the objective function 58
Biggest number in a constraint 25202799411200000
Number of bits of the biggest number in a constraint 55
Biggest sum of numbers in a constraint 212191388834595325
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 benchmark2.57561
Number of variables10627
Total number of constraints535
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 constraints535
Minimum length of a constraint7
Maximum length of a constraint357

Trace number 5074

Launcher Data

LAUNCH ON wulflinc18 THE 2005-09-19 22:34:57 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=873 boxname=wulflinc18 idbench=873 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  f6aee0205ed0fd82be74ca5b868634a5  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-etamacro.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-etamacro.opb
IDLAUNCH: 873
/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:        872980 kB
Buffers:         40616 kB
Cached:          85904 kB
SwapCached:        844 kB
Active:          68756 kB
Inactive:        60392 kB
HighTotal:      131008 kB
HighFree:        42588 kB
LowTotal:       903652 kB
LowFree:        830392 kB
SwapTotal:     2097892 kB
SwapFree:      2096548 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5768 kB
Slab:            26828 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 22:35:01 (client local time) WITH STATUS 20 IN 3.04653 SECONDS
stats: 873 7 3.04653 20

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 10627 variables and 758 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 3.011 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/22183/stat): 22183 (bsolo) R 22182 22183 31027 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1853502978 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/22183/statm): 107 3 90 68 0 39 0
[pid=22183] vsize: 428
open syscall for file /etc/ld.so.preload
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open syscall for file /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-13-7-etamacro.opb
One traced child (pid=22183) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 3.14874
CPU time (s): 3.04653
CPU user time (s): 2.69759
CPU system time (s): 0.348946
CPU usage (%): 96.7541
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

ERROR: no interpretation found !