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-ship04s.opb
MD5SUMa586e9246f27773484b1d2b61a85352d
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 29160
Biggest coefficient in the objective function 1930952704000
Number of bits for the biggest coefficient in the objective function 41
Sum of the numbers in the objective function 270105641840925
Number of bits of the sum of numbers in the objective function 48
Biggest number in a constraint 1930952704000
Number of bits of the biggest number in a constraint 41
Biggest sum of numbers in a constraint 270105641840925
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 benchmark1.52277
Number of variables29160
Total number of constraints352
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 constraints352
Minimum length of a constraint20
Maximum length of a constraint1320

Trace number 5060

Launcher Data

LAUNCH ON wulflinc8 THE 2005-09-19 22:31:12 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=857 boxname=wulflinc8 idbench=857 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  a586e9246f27773484b1d2b61a85352d  /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-13-7-ship04s.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc8/normalized-mps-v2-13-7-ship04s.opb
IDLAUNCH: 857
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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	: 2
cpu MHz		: 451.007
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:        890664 kB
Buffers:         32932 kB
Cached:          85420 kB
SwapCached:        784 kB
Active:          41388 kB
Inactive:        79636 kB
HighTotal:      131008 kB
HighFree:        41580 kB
LowTotal:       903652 kB
LowFree:        849084 kB
SwapTotal:     2097136 kB
SwapFree:      2095880 kB
Dirty:              24 kB
Writeback:           0 kB
Mapped:           5756 kB
Slab:            17228 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-19 22:31:27 (client local time) WITH STATUS 20 IN 14.0289 SECONDS
stats: 857 7 14.0289 20

Solver Data

c INFO: OSL Context initialized.
c BIG Int formula...
c Initial problem consists of 29160 variables and 604 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 13.969 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/16408/stat): 16408 (bsolo) R 16407 16408 27660 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1781721596 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16408/statm): 107 3 90 68 0 39 0
[pid=16408] vsize: 428
open syscall for file /etc/ld.so.preload
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[startup+10.0033 s]
Raw data (loadavg): 0.93 0.98 0.99 2/56 16408
Raw data (/proc/16408/stat): 16408 (bsolo) R 16407 16408 27660 0 -1 0 22074 0 0 0 923 61 0 0 25 0 1 0 1781721596 93650944 21985 4294967295 134512640 134736556 3221224560 3221223072 134572994 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/16408/statm): 22864 21985 1116 68 0 22796 0
[pid=16408] vsize: 91456
Current children cumulated CPU time (s) 9.84
Current children cumulated vsize (Kb) 91456
One traced child (pid=16408) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 14.1958
CPU time (s): 14.0289
CPU user time (s): 13.285
CPU system time (s): 0.743886
CPU usage (%): 98.8242
Max. virtual memory (cumulated for all children) (Kb): 91456

Verifier Data

ERROR: no interpretation found !