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/miplib2003/normalized-mps-v2-20-10-t1717.opb
MD5SUMbc46e72682d969c09e6f4028df473a45
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 201342
Optimality of the best value was proved NO
Number of terms in the objective function 73885
Biggest coefficient in the objective function 4066
Number of bits for the biggest coefficient in the objective function 12
Sum of the numbers in the objective function 172074995
Number of bits of the sum of numbers in the objective function 28
Biggest number in a constraint 4066
Number of bits of the biggest number in a constraint 12
Biggest sum of numbers in a constraint 172074995
Number of bits of the biggest sum of numbers28
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1191.77
Number of variables73885
Total number of constraints74436
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)74436
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint612

Trace number 614

Launcher Data

LAUNCH ON wulflinc17 THE 2005-09-18 11:58:31 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=602 boxname=wulflinc17 idbench=602 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  bc46e72682d969c09e6f4028df473a45  /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-t1717.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-t1717.opb
IDLAUNCH: 602
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.072
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		: 451.072
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:        935552 kB
Buffers:         33672 kB
Cached:          35828 kB
SwapCached:        608 kB
Active:          58992 kB
Inactive:        13000 kB
HighTotal:      131008 kB
HighFree:        93744 kB
LowTotal:       903652 kB
LowFree:        841808 kB
SwapTotal:     2097892 kB
SwapFree:      2096684 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5768 kB
Slab:            21416 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 11:58:54 (client local time) WITH STATUS 0 IN 20.1969 SECONDS
stats: 602 7 20.1969 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/22535/stat): 22535 (bsolo) R 22534 22535 19316 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1841101367 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/22535/statm): 107 3 90 68 0 39 0
[pid=22535] 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
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open syscall for file /oldhome/oroussel/lib/tls/mmx/libosl.so
open syscall for file /oldhome/oroussel/lib/tls/libosl.so
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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
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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
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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
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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
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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
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open syscall for file /oldhome/oroussel/tmp/wulflinc17/normalized-mps-v2-20-10-t1717.opb

[startup+10.003 s]
Raw data (loadavg): 1.02 1.00 0.99 2/56 22535
Raw data (/proc/22535/stat): 22535 (bsolo) R 22534 22535 19316 0 -1 0 141204 0 0 0 653 289 0 0 25 0 1 0 1841101367 581578752 141115 4294967295 134512640 134736556 3221224560 3221223104 134573635 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/22535/statm): 141987 141115 1116 68 0 141919 0
[pid=22535] vsize: 567948
Current children cumulated CPU time (s) 9.42
Current children cumulated vsize (Kb) 567948

[startup+20.0036 s]
Raw data (loadavg): 1.01 1.00 0.99 2/56 22535
Raw data (/proc/22535/stat): 22535 (bsolo) R 22534 22535 19316 0 -1 0 224687 0 0 0 1463 445 0 0 25 0 1 0 1841101367 923684864 224535 4294967295 134512640 134736556 3221224560 3221223084 1077399562 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/22535/statm): 225509 224535 1116 68 0 225441 0
[pid=22535] vsize: 902036
Current children cumulated CPU time (s) 19.08
Current children cumulated vsize (Kb) 902036



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+20.7173 s]
Raw data (loadavg): 1.01 1.00 0.99 1/56 22535
Raw data (/proc/22535/stat): 22535 (bsolo) T 22534 22535 19316 0 -1 0 229571 0 0 0 1523 454 0 0 25 0 1 0 1841101367 943738880 229419 4294967295 134512640 134736556 3221224560 3221222796 1077782939 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/22535/statm): 230405 229419 1116 68 0 230337 0
[pid=22535] vsize: 921620
Current children cumulated CPU time (s) 19.77
Current children cumulated vsize (Kb) 921620

Sending SIGTERM to -22535
Sleeping 2 seconds
Sending SIGKILL to -22535
One traced child (pid=22535) 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): 23.1415
CPU time (s): 20.1969
CPU user time (s): 15.2337
CPU system time (s): 4.96325
CPU usage (%): 87.2757
Max. virtual memory (cumulated for all children) (Kb): 921620

Verifier Data

ERROR: no interpretation found !