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-v2-20-10/MIPLIB/miplib/normalized-mps-v2-20-10-misc04.opb
MD5SUM7b42190d864979953c47e5a92736f365
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 43188899594881916928
Number of bits of the biggest number in a constraint 66
Biggest sum of numbers in a constraint 133861748414790074368
Number of bits of the biggest sum of numbers67
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables146276
Total number of constraints1755
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)45
Number of constraints which are nor clauses,nor cardinality constraints1710
Minimum length of a constraint1
Maximum length of a constraint5071

Trace number 3934

Launcher Data

LAUNCH ON wulflinc28 THE 2005-09-19 04:09:27 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=4036 boxname=wulflinc28 idbench=520 idsolver=4 numberseed=0
MD5SUM SOLVER: 21c3ffd7205c96d5f0784fd273b92938  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  7b42190d864979953c47e5a92736f365  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-misc04.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-misc04.opb
IDLAUNCH: 4036
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.077
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		: 451.077
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:        833556 kB
Buffers:         35300 kB
Cached:         137200 kB
SwapCached:        696 kB
Active:          82148 kB
Inactive:        92956 kB
HighTotal:      131008 kB
HighFree:        27832 kB
LowTotal:       903652 kB
LowFree:        805724 kB
SwapTotal:     2097640 kB
SwapFree:      2096372 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5812 kB
Slab:            20344 kB
Committed_AS:    64160 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 04:10:15 (client local time) WITH STATUS 20 IN 46.7539 SECONDS
stats: 4036 7 46.7539 20

Solver Data

c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-misc04.opb ......
s UNSATISFIABLE
c Done, CPU Time=0.444932

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/9355/stat): 9355 (PBS4) R 9354 9355 20115 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 1846913608 978944 2 4294967295 134512640 135450776 3221224560 3221224560 134512960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9355/statm): 239 2 232 232 0 7 0
[pid=9355] vsize: 956
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-misc04.opb
open syscall for file /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-misc04.opb

[startup+10.0024 s]
Raw data (loadavg): 0.94 0.98 0.96 2/56 9355
Raw data (/proc/9355/stat): 9355 (PBS4) R 9354 9355 20115 0 -1 0 7643 0 0 0 977 19 0 0 25 0 1 0 1846913608 32010240 7399 4294967295 134512640 135450776 3221224560 3221223040 134854921 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9355/statm): 7815 7399 232 232 0 7583 0
[pid=9355] vsize: 31260
Current children cumulated CPU time (s) 9.96
Current children cumulated vsize (Kb) 31260

[startup+20.0041 s]
Raw data (loadavg): 0.95 0.98 0.96 2/56 9355
Raw data (/proc/9355/stat): 9355 (PBS4) R 9354 9355 20115 0 -1 0 10207 0 0 0 1965 29 0 0 25 0 1 0 1846913608 42168320 9963 4294967295 134512640 135450776 3221224560 3221223072 134599221 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9355/statm): 10295 9963 232 232 0 10063 0
[pid=9355] vsize: 41180
Current children cumulated CPU time (s) 19.94
Current children cumulated vsize (Kb) 41180

[startup+30.0048 s]
Raw data (loadavg): 0.95 0.98 0.96 2/56 9355
Raw data (/proc/9355/stat): 9355 (PBS4) R 9354 9355 20115 0 -1 0 10207 0 0 0 2964 30 0 0 25 0 1 0 1846913608 42168320 9963 4294967295 134512640 135450776 3221224560 3221223072 134599227 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9355/statm): 10295 9963 232 232 0 10063 0
[pid=9355] vsize: 41180
Current children cumulated CPU time (s) 29.94
Current children cumulated vsize (Kb) 41180

[startup+40.0045 s]
Raw data (loadavg): 0.96 0.98 0.96 2/56 9355
Raw data (/proc/9355/stat): 9355 (PBS4) R 9354 9355 20115 0 -1 0 10208 0 0 0 3962 32 0 0 25 0 1 0 1846913608 42168320 9964 4294967295 134512640 135450776 3221224560 3221223072 134601242 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9355/statm): 10295 9964 232 232 0 10063 0
[pid=9355] vsize: 41180
Current children cumulated CPU time (s) 39.94
Current children cumulated vsize (Kb) 41180
One traced child (pid=9355) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 46.8245
CPU time (s): 46.7539
CPU user time (s): 46.318
CPU system time (s): 0.435933
CPU usage (%): 99.8493
Max. virtual memory (cumulated for all children) (Kb): 41180

Verifier Data

ERROR: no interpretation found !