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/miplib3/normalized-mps-v2-13-7-nw04.opb
MD5SUMa5c401bba5afccf02c7b40cb1c595b15
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 31302
Optimality of the best value was proved NO
Number of terms in the objective function 87482
Biggest coefficient in the objective function 5220
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 120189580
Number of bits of the sum of numbers in the objective function 27
Biggest number in a constraint 5220
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 120189580
Number of bits of the biggest sum of numbers27
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1235.66
Number of variables87482
Total number of constraints87518
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)87518
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint42032

Trace number 5235

Launcher Data

LAUNCH ON wulflinc31 THE 2005-09-19 23:55:45 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=1034 boxname=wulflinc31 idbench=1034 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  a5c401bba5afccf02c7b40cb1c595b15  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-nw04.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-nw04.opb
IDLAUNCH: 1034
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
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		: 451.153
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:        653256 kB
Buffers:         43080 kB
Cached:         304948 kB
SwapCached:       1016 kB
Active:         121764 kB
Inactive:       229080 kB
HighTotal:      131008 kB
HighFree:          616 kB
LowTotal:       903652 kB
LowFree:        652640 kB
SwapTotal:     2097892 kB
SwapFree:      2096404 kB
Dirty:              32 kB
Writeback:           0 kB
Mapped:           5776 kB
Slab:            24916 kB
Committed_AS:    64376 kB
PageTables:        340 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 23:56:09 (client local time) WITH STATUS 0 IN 20.9518 SECONDS
stats: 1034 7 20.9518 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/30006/stat): 30006 (bsolo) R 30005 30006 9102 0 -1 0 19 0 0 0 0 0 0 0 22 0 1 0 1853981635 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/30006/statm): 107 3 90 68 0 39 0
[pid=30006] 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
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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
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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/wulflinc31/normalized-mps-v2-13-7-nw04.opb

[startup+10.0034 s]
Raw data (loadavg): 0.94 0.97 0.99 2/57 30006
Raw data (/proc/30006/stat): 30006 (bsolo) R 30005 30006 9102 0 -1 0 138997 0 0 0 645 291 0 0 25 0 1 0 1853981635 572669952 138908 4294967295 134512640 134736556 3221224560 3221223084 1077399562 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/30006/statm): 139812 138908 1116 68 0 139744 0
[pid=30006] vsize: 559248
Current children cumulated CPU time (s) 9.36
Current children cumulated vsize (Kb) 559248

[startup+20.0043 s]
Raw data (loadavg): 0.95 0.97 0.99 2/57 30006
Raw data (/proc/30006/stat): 30006 (bsolo) R 30005 30006 9102 0 -1 0 219684 0 2 0 1436 460 0 0 25 0 1 0 1853981635 903184384 217530 4294967295 134512640 134736556 3221224560 3221223104 134573621 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/30006/statm): 220504 217530 1116 68 0 220436 0
[pid=30006] vsize: 882016
Current children cumulated CPU time (s) 18.96
Current children cumulated vsize (Kb) 882016



Mem limit exceeded: sending SIGTERM then SIGKILL

[startup+21.6086 s]
Raw data (loadavg): 1.03 0.99 0.99 2/57 30006
Raw data (/proc/30006/stat): 30006 (bsolo) T 30005 30006 9102 0 -1 0 229571 0 2 0 1562 489 0 0 25 0 1 0 1853981635 943738880 225283 4294967295 134512640 134736556 3221224560 3221222796 1077782939 0 0 5 16384 3222434794 0 0 17 0 0 0
Raw data (/proc/30006/statm): 230405 225283 1116 68 0 230337 0
[pid=30006] vsize: 921620
Current children cumulated CPU time (s) 20.51
Current children cumulated vsize (Kb) 921620

Sending SIGTERM to -30006
Sleeping 2 seconds
Sending SIGKILL to -30006
One traced child (pid=30006) 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): 24.0396
CPU time (s): 20.9518
CPU user time (s): 15.6296
CPU system time (s): 5.32219
CPU usage (%): 87.1553
Max. virtual memory (cumulated for all children) (Kb): 921620

Verifier Data

ERROR: no interpretation found !