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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-neos9.opb
MD5SUM44b9f0f81a9b533b0f9e0fd187bafc3d
Bench Categoryoptimization, medium integers (OPTMEDINT)
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 198658
Biggest coefficient in the objective function 1024
Number of bits for the biggest coefficient in the objective function 11
Sum of the numbers in the objective function 38727219
Number of bits of the sum of numbers in the objective function 26
Biggest number in a constraint 30720
Number of bits of the biggest number in a constraint 15
Biggest sum of numbers in a constraint 38727219
Number of bits of the biggest sum of numbers26
Best result obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark
Number of variables874498
Total number of constraints113008
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)2186
Number of constraints which are nor clauses,nor cardinality constraints110822
Minimum length of a constraint1
Maximum length of a constraint14080

Trace number 4355

Launcher Data

LAUNCH ON wulflinc25 THE 2005-09-19 17:25:42 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=734 boxname=wulflinc25 idbench=734 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  44b9f0f81a9b533b0f9e0fd187bafc3d  /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-neos9.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-neos9.opb
IDLAUNCH: 734
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.220
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		: 451.220
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:        817252 kB
Buffers:         37888 kB
Cached:         151684 kB
SwapCached:        896 kB
Active:         138548 kB
Inactive:        53668 kB
HighTotal:      131008 kB
HighFree:         3696 kB
LowTotal:       903652 kB
LowFree:        813556 kB
SwapTotal:     2097892 kB
SwapFree:      2096496 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5724 kB
Slab:            19460 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 17:26:16 (client local time) WITH STATUS 0 IN 28.4267 SECONDS
stats: 734 7 28.4267 0

Solver Data

c INFO: OSL Context initialized.
c Caught signal: 15
s UNKNOWN
c Exit Code: 0

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/21631/stat): 21631 (bsolo) R 21630 21631 4419 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1851708482 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/21631/statm): 107 3 90 68 0 39 0
[pid=21631] vsize: 428
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libosl.so
open syscall for file tls/i686/libosl.so
open syscall for file tls/mmx/libosl.so
open syscall for file tls/libosl.so
open syscall for file i686/mmx/libosl.so
open syscall for file i686/libosl.so
open syscall for file mmx/libosl.so
open syscall for file libosl.so
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/tls/i686/libosl.so
open syscall for file /oldhome/oroussel/lib/tls/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/tls/libosl.so
open syscall for file /oldhome/oroussel/lib/i686/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/i686/libosl.so
open syscall for file /oldhome/oroussel/lib/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/libosl.so
open syscall for file tls/i686/mmx/libstdc++-libc6.2-2.so.3
open syscall for file tls/i686/libstdc++-libc6.2-2.so.3
open syscall for file tls/mmx/libstdc++-libc6.2-2.so.3
open syscall for file tls/libstdc++-libc6.2-2.so.3
open syscall for file i686/mmx/libstdc++-libc6.2-2.so.3
open syscall for file i686/libstdc++-libc6.2-2.so.3
open syscall for file mmx/libstdc++-libc6.2-2.so.3
open syscall for file libstdc++-libc6.2-2.so.3
open syscall for file /oldhome/oroussel/lib/libstdc++-libc6.2-2.so.3
open syscall for file /etc/ld.so.cache
open syscall for file /usr/lib/libstdc++-libc6.2-2.so.3
open syscall for file tls/i686/mmx/libm.so.6
open syscall for file tls/i686/libm.so.6
open syscall for file tls/mmx/libm.so.6
open syscall for file tls/libm.so.6
open syscall for file i686/mmx/libm.so.6
open syscall for file i686/libm.so.6
open syscall for file mmx/libm.so.6
open syscall for file libm.so.6
open syscall for file /oldhome/oroussel/lib/libm.so.6
open syscall for file /lib/tls/libm.so.6
open syscall for file tls/i686/mmx/libpthread.so.0
open syscall for file tls/i686/libpthread.so.0
open syscall for file tls/mmx/libpthread.so.0
open syscall for file tls/libpthread.so.0
open syscall for file i686/mmx/libpthread.so.0
open syscall for file i686/libpthread.so.0
open syscall for file mmx/libpthread.so.0
open syscall for file libpthread.so.0
open syscall for file /oldhome/oroussel/lib/libpthread.so.0
open syscall for file /lib/tls/libpthread.so.0
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /lib/tls/libc.so.6
open syscall for file tls/i686/mmx/libgcc_s.so.1
open syscall for file tls/i686/libgcc_s.so.1
open syscall for file tls/mmx/libgcc_s.so.1
open syscall for file tls/libgcc_s.so.1
open syscall for file i686/mmx/libgcc_s.so.1
open syscall for file i686/libgcc_s.so.1
open syscall for file mmx/libgcc_s.so.1
open syscall for file libgcc_s.so.1
open syscall for file /oldhome/oroussel/lib/libgcc_s.so.1
open syscall for file /lib/libgcc_s.so.1
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /etc/localtime
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/.OptimizationSolutions/nodelock
open syscall for file /oldhome/oroussel/tmp/wulflinc25/normalized-mps-v2-20-10-neos9.opb

[startup+10.0036 s]
Raw data (loadavg): 0.51 0.12 0.04 2/56 21631
Raw data (/proc/21631/stat): 21631 (bsolo) R 21630 21631 4419 0 -1 0 91037 0 0 0 768 192 0 0 25 0 1 0 1851708482 375648256 90633 4294967295 134512640 134736556 3221224560 3221223084 1077399562 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/21631/statm): 91711 90633 1116 68 0 91643 0
[pid=21631] vsize: 366844
Current children cumulated CPU time (s) 9.6
Current children cumulated vsize (Kb) 366844

[startup+20.0042 s]
Raw data (loadavg): 0.58 0.15 0.05 2/56 21631
Raw data (/proc/21631/stat): 21631 (bsolo) R 21630 21631 4419 0 -1 0 175985 0 0 0 1548 380 0 0 25 0 1 0 1851708482 722509824 175078 4294967295 134512640 134736556 3221224560 3221223104 134573619 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/21631/statm): 176394 175078 1116 68 0 176326 0
[pid=21631] vsize: 705576
Current children cumulated CPU time (s) 19.28
Current children cumulated vsize (Kb) 705576



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+29.1901 s]
Raw data (loadavg): 0.65 0.18 0.06 2/56 21631
Raw data (/proc/21631/stat): 21631 (bsolo) T 21630 21631 4419 0 -1 0 230179 0 13 0 2278 521 0 0 25 0 1 0 1851708482 943779840 224868 4294967295 134512640 134736556 3221224560 3221222796 1077782939 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/21631/statm): 230415 224868 1116 68 0 230347 0
[pid=21631] vsize: 921660
Current children cumulated CPU time (s) 27.99
Current children cumulated vsize (Kb) 921660

Sending SIGTERM to -21631
Sleeping 2 seconds

[startup+30.0038 s]
Raw data (loadavg): 0.65 0.18 0.06 1/57 21632
Raw data (/proc/21631/stat): 21631 (bsolo) S 21630 21631 4419 0 -1 0 230182 0 13 0 2278 522 0 0 25 0 1 0 1851708482 943779840 224120 4294967295 134512640 134736556 3221224560 3221221768 1077867073 0 16384 5 16384 0 0 0 17 0 0 0
Raw data (/proc/21631/statm): 230415 224120 1116 68 0 230347 0
[pid=21631] vsize: 921660
Current children cumulated CPU time (s) 28
Current children cumulated vsize (Kb) 921660
Sending SIGKILL to -21631
One traced child (pid=21631) ended because it received signal 9 (SIGKILL)
All traced children have exited ! Game is over.

Child ended because it received signal 9 (SIGKILL)
Real time (s): 31.6161
CPU time (s): 28.4267
CPU user time (s): 22.7875
CPU system time (s): 5.63914
CPU usage (%): 89.912
Max. virtual memory (cumulated for all children) (Kb): 921660

Verifier Data

ERROR: no interpretation found !