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-pilot.opb
MD5SUMcbcc6e4c45bc594b9a9c886c370271c9
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 560
Biggest coefficient in the objective function 3696230400
Number of bits for the biggest coefficient in the objective function 32
Sum of the numbers in the objective function 91541646075
Number of bits of the sum of numbers in the objective function 37
Biggest number in a constraint 13526630400000
Number of bits of the biggest number in a constraint 44
Biggest sum of numbers in a constraint 359500249863150
Number of bits of the biggest sum of numbers49
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.83772
Number of variables59467
Total number of constraints2515
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 constraints2515
Minimum length of a constraint7
Maximum length of a constraint5080

Trace number 6460

Launcher Data

LAUNCH ON wulflinc26 THE 2005-09-20 07:02:21 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4350 boxname=wulflinc26 idbench=834 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  cbcc6e4c45bc594b9a9c886c370271c9  /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-13-7-pilot.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-13-7-pilot.opb
IDLAUNCH: 4350
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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		: 451.061
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:        854936 kB
Buffers:         29700 kB
Cached:         121004 kB
SwapCached:        868 kB
Active:          63128 kB
Inactive:        90248 kB
HighTotal:      131008 kB
HighFree:         8456 kB
LowTotal:       903652 kB
LowFree:        846480 kB
SwapTotal:     2097892 kB
SwapFree:      2096540 kB
Dirty:               0 kB
Writeback:           0 kB
Mapped:           5712 kB
Slab:            20760 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 07:03:10 (client local time) WITH STATUS 20 IN 48.2597 SECONDS
stats: 4350 7 48.2597 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-13-7-pilot.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.583911

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/18440/stat): 18440 (PBS4) R 18439 18440 16528 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1856592634 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18440/statm): 239 2 232 232 0 7 0
[pid=18440] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-13-7-pilot.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc26/normalized-mps-v2-13-7-pilot.opb

[startup+10.0029 s]
Raw data (loadavg): 0.85 0.95 0.94 2/56 18440
Raw data (/proc/18440/stat): 18440 (PBS4) R 18439 18440 16528 0 -1 0 3491 0 0 0 985 12 0 0 25 0 1 0 1856592634 15298560 3441 4294967295 134512640 135450776 3221224560 3221223072 134600439 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18440/statm): 3735 3441 232 232 0 3503 0
[pid=18440] vsize: 14940
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 14940

[startup+20.0036 s]
Raw data (loadavg): 0.88 0.95 0.94 2/56 18440
Raw data (/proc/18440/stat): 18440 (PBS4) R 18439 18440 16528 0 -1 0 4345 0 0 0 1979 16 0 0 25 0 1 0 1856592634 18632704 4295 4294967295 134512640 135450776 3221224560 3221222992 134853168 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18440/statm): 4549 4295 232 232 0 4317 0
[pid=18440] vsize: 18196
Current children cumulated CPU time (s) 19.95
Current children cumulated vsize (Kb) 18196

[startup+30.0043 s]
Raw data (loadavg): 0.89 0.95 0.94 2/56 18440
Raw data (/proc/18440/stat): 18440 (PBS4) R 18439 18440 16528 0 -1 0 6315 0 0 0 2972 22 0 0 25 0 1 0 1856592634 26804224 6265 4294967295 134512640 135450776 3221224560 3221223072 134601325 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18440/statm): 6544 6265 232 232 0 6312 0
[pid=18440] vsize: 26176
Current children cumulated CPU time (s) 29.94
Current children cumulated vsize (Kb) 26176

[startup+40.005 s]
Raw data (loadavg): 0.91 0.96 0.94 2/56 18440
Raw data (/proc/18440/stat): 18440 (PBS4) R 18439 18440 16528 0 -1 0 6456 0 0 0 3970 24 0 0 25 0 1 0 1856592634 27533312 6406 4294967295 134512640 135450776 3221224560 3221223008 134859424 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/18440/statm): 6722 6406 232 232 0 6490 0
[pid=18440] vsize: 26888
Current children cumulated CPU time (s) 39.94
Current children cumulated vsize (Kb) 26888
One traced child (pid=18440) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 48.334
CPU time (s): 48.2597
CPU user time (s): 47.9267
CPU system time (s): 0.332949
CPU usage (%): 99.8462
Max. virtual memory (cumulated for all children) (Kb): 26888

Verifier Data

ERROR: no interpretation found !