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/MIPLIB/miplib2003/normalized-mps-v2-13-7-qiu.opb
MD5SUMd5e26ade9aa11867ede102dd2fb60449
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 5328
Biggest coefficient in the objective function 8885108736
Number of bits for the biggest coefficient in the objective function 34
Sum of the numbers in the objective function 4692033563496
Number of bits of the sum of numbers in the objective function 43
Biggest number in a constraint 8885108736
Number of bits of the biggest number in a constraint 34
Biggest sum of numbers in a constraint 4692033563496
Number of bits of the biggest sum of numbers43
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark98.2931
Number of variables15888
Total number of constraints1240
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)48
Number of constraints which are nor clauses,nor cardinality constraints1192
Minimum length of a constraint1
Maximum length of a constraint3960

Trace number 6601

Launcher Data

LAUNCH ON wulflinc22 THE 2005-09-20 08:10:58 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4494 boxname=wulflinc22 idbench=978 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  d5e26ade9aa11867ede102dd2fb60449  /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-qiu.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-qiu.opb
IDLAUNCH: 4494
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.031
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		: 451.031
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:        861544 kB
Buffers:         25668 kB
Cached:         120252 kB
SwapCached:        552 kB
Active:          24848 kB
Inactive:       123636 kB
HighTotal:      131008 kB
HighFree:        13664 kB
LowTotal:       903652 kB
LowFree:        847880 kB
SwapTotal:     2097892 kB
SwapFree:      2096768 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5788 kB
Slab:            19048 kB
Committed_AS:    64300 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-20 08:11:19 (client local time) WITH STATUS 20 IN 21.0768 SECONDS
stats: 4494 7 21.0768 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-qiu.opb ......
s UNSATISFIABLE
c Done, CPU Time=16.0286

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/17994/stat): 17994 (PBS4) R 17993 17994 21452 0 -1 0 18 0 0 0 0 0 0 0 22 0 1 0 1856993975 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/17994/statm): 239 2 232 232 0 7 0
[pid=17994] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-qiu.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-13-7-qiu.opb

[startup+10.0025 s]
Raw data (loadavg): 0.93 0.95 0.90 2/56 17994
Raw data (/proc/17994/stat): 17994 (PBS4) R 17993 17994 21452 0 -1 0 2054 0 0 0 985 9 0 0 25 0 1 0 1856993975 9322496 1664 4294967295 134512640 135450776 3221224560 3221223376 134550433 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/17994/statm): 2276 1664 232 232 0 2044 0
[pid=17994] vsize: 9104
Current children cumulated CPU time (s) 9.94
Current children cumulated vsize (Kb) 9104

[startup+20.0022 s]
Raw data (loadavg): 0.94 0.96 0.91 2/56 17994
Raw data (/proc/17994/stat): 17994 (PBS4) R 17993 17994 21452 0 -1 0 2432 0 0 0 1969 16 0 0 25 0 1 0 1856993975 12468224 2042 4294967295 134512640 135450776 3221224560 3221223280 134538944 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/17994/statm): 3044 2042 232 232 0 2812 0
[pid=17994] vsize: 12176
Current children cumulated CPU time (s) 19.85
Current children cumulated vsize (Kb) 12176
One traced child (pid=17994) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 21.2387
CPU time (s): 21.0768
CPU user time (s): 20.8978
CPU system time (s): 0.178972
CPU usage (%): 99.2378
Max. virtual memory (cumulated for all children) (Kb): 12176

Verifier Data

ERROR: no interpretation found !