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-timtab1.opb
MD5SUM80f96076c552994a45628c61744afcd8
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 1925
Biggest coefficient in the objective function 3604480000000000
Number of bits for the biggest coefficient in the objective function 52
Sum of the numbers in the objective function 349617145499934465
Number of bits of the sum of numbers in the objective function 59
Biggest number in a constraint 1200000000000000000000
Number of bits of the biggest number in a constraint 71
Biggest sum of numbers in a constraint 4359960937500000124928
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 benchmark22.0866
Number of variables3763
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 constraint138

Trace number 10044

Launcher Data

LAUNCH ON wulflinc5 THE 2005-09-23 16:41:40 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8807 boxname=wulflinc5 idbench=603 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  80f96076c552994a45628c61744afcd8  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-timtab1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-timtab1.opb
IDLAUNCH: 8807
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.158
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	: 2
cpu MHz		: 451.158
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:        935028 kB
Buffers:         15016 kB
Cached:          65972 kB
SwapCached:          0 kB
Active:          44272 kB
Inactive:        39628 kB
HighTotal:      131008 kB
HighFree:        61040 kB
LowTotal:       903652 kB
LowFree:        873988 kB
SwapTotal:     2097136 kB
SwapFree:      2097136 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6976 kB
Slab:            10232 kB
Committed_AS:    63632 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-23 16:42:03 (client local time) WITH STATUS 20 IN 22.0866 SECONDS
stats: 8807 7 22.0866 20

Solver Data

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

c Decision: 1460/128041	Time: 11.0353/86400
c Decision: 1460/128041	Time: 14.0339/86400
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/9117/stat): 9117 (pb2sat) R 9116 9117 4060 0 -1 0 18 0 0 0 0 0 0 0 24 0 1 0 21724267 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9117/statm): 373 2 364 364 0 9 0
[pid=9117] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-timtab1.opb

[startup+10.0028 s]
Raw data (loadavg): 0.85 0.92 0.93 1/55 9117
Raw data (/proc/9117/stat): 9117 (pb2sat) T 9116 9117 4060 0 -1 0 15590 0 0 0 934 48 0 0 25 0 1 0 21724267 45035520 9791 4294967295 134512640 135987407 3221224560 3221223052 135635874 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/9117/statm): 10995 9791 364 364 0 10631 0
[pid=9117] vsize: 43980
Current children cumulated CPU time (s) 9.82
Current children cumulated vsize (Kb) 43980

[startup+20.0035 s]
Raw data (loadavg): 0.88 0.92 0.93 2/55 9117
Raw data (/proc/9117/stat): 9117 (pb2sat) R 9116 9117 4060 0 -1 0 16331 0 0 0 1909 58 0 0 25 0 1 0 21724267 45924352 10030 4294967295 134512640 135987407 3221224560 3221223120 134788496 0 0 5 16384 0 0 0 17 0 0 0
Raw data (/proc/9117/statm): 11212 10030 364 364 0 10848 0
[pid=9117] vsize: 44848
Current children cumulated CPU time (s) 19.67
Current children cumulated vsize (Kb) 44848
One traced child (pid=9117) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 22.4575
CPU time (s): 22.0866
CPU user time (s): 21.4657
CPU system time (s): 0.620905
CPU usage (%): 98.3486
Max. virtual memory (cumulated for all children) (Kb): 44848

Verifier Data

ERROR: no interpretation found !