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-timtab1.opb
MD5SUMbbe4af13307edeeeae2f9b61a7fffb41
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 1541
Biggest coefficient in the objective function 450560000000000
Number of bits for the biggest coefficient in the objective function 49
Sum of the numbers in the objective function 43694073499991809
Number of bits of the sum of numbers in the objective function 56
Biggest number in a constraint 1200000000000000000000
Number of bits of the biggest number in a constraint 71
Biggest sum of numbers in a constraint 4359687500000000475136
Number of bits of the biggest sum of numbers72
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark20.9068
Number of variables3085
Total number of constraints555
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)64
Number of constraints which are nor clauses,nor cardinality constraints491
Minimum length of a constraint1
Maximum length of a constraint111

Trace number 10427

Launcher Data

LAUNCH ON wulflinc32 THE 2005-09-23 18:18:36 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=9191 boxname=wulflinc32 idbench=987 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  bbe4af13307edeeeae2f9b61a7fffb41  /oldhome/oroussel/tmp/wulflinc32/normalized-mps-v2-13-7-timtab1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc32/normalized-mps-v2-13-7-timtab1.opb
IDLAUNCH: 9191
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.145
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		: 451.145
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:      1034724 kB
MemFree:        919812 kB
Buffers:         15620 kB
Cached:          79648 kB
SwapCached:          0 kB
Active:          42284 kB
Inactive:        55916 kB
HighTotal:      131072 kB
HighFree:        47008 kB
LowTotal:       903652 kB
LowFree:        872804 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              52 kB
Writeback:           0 kB
Mapped:           6988 kB
Slab:            11288 kB
Committed_AS:    63660 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 18:18:58 (client local time) WITH STATUS 20 IN 20.9068 SECONDS
stats: 9191 7 20.9068 20

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...

c Decision: 1460/106606	Time: 4.96325/86400
c Decision: 1467/106606	Time: 9.48856/86400
c Decision: 1467/106606	Time: 13.6409/86400
s UNSATISFIABLE

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/9433/stat): 9433 (pb2sat) R 9432 9433 4005 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 22249083 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9433/statm): 373 2 364 364 0 9 0
[pid=9433] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc32/normalized-mps-v2-13-7-timtab1.opb

[startup+10.0022 s]
Raw data (loadavg): 0.91 0.95 0.95 2/55 9433
Raw data (/proc/9433/stat): 9433 (pb2sat) R 9432 9433 4005 0 -1 0 14403 0 0 0 942 43 0 0 25 0 1 0 22249083 44027904 8458 4294967295 134512640 135987407 3221224560 3221223248 134811805 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9433/statm): 10749 8458 364 364 0 10385 0
[pid=9433] vsize: 42996
Current children cumulated CPU time (s) 9.85
Current children cumulated vsize (Kb) 42996

[startup+20.003 s]
Raw data (loadavg): 0.92 0.95 0.95 2/55 9433
Raw data (/proc/9433/stat): 9433 (pb2sat) R 9432 9433 4005 0 -1 0 15019 0 0 0 1916 55 0 0 25 0 1 0 22249083 44814336 8656 4294967295 134512640 135987407 3221224560 3221223248 134812146 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/9433/statm): 10941 8656 364 364 0 10577 0
[pid=9433] vsize: 43764
Current children cumulated CPU time (s) 19.71
Current children cumulated vsize (Kb) 43764
One traced child (pid=9433) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 21.2003
CPU time (s): 20.9068
CPU user time (s): 20.3209
CPU system time (s): 0.58591
CPU usage (%): 98.6156
Max. virtual memory (cumulated for all children) (Kb): 43764

Verifier Data

ERROR: no interpretation found !