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).
  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

Namenormalized-opb/mps-v2-13-7/MIPLIB/miplib/normalized-mps-v2-13-7-bell3b.opb
MD5SUMeaa1b6e946f643598c767cbea970679c
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 1320
Biggest coefficient in the objective function 6291456000000000
Number of bits for the biggest coefficient in the objective function 53
Sum of the numbers in the objective function 122055965815457650
Number of bits of the sum of numbers in the objective function 57
Biggest number in a constraint 6291456000000000
Number of bits of the biggest number in a constraint 53
Biggest sum of numbers in a constraint 122055965815457650
Number of bits of the biggest sum of numbers57
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.145976
Number of variables1663
Total number of constraints194
Number of constraints which are clauses22
Number of constraints which are cardinality constraints (but not clauses)39
Number of constraints which are nor clauses,nor cardinality constraints133
Minimum length of a constraint1
Maximum length of a constraint135

Trace number 25917 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-05-23 09:39:26 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=16695 boxname=wulflinc31 idbench=1285 idsolver=3 numberseed=0
MD5SUM SOLVER: 03a6a792daea978e4202f78851741568  /oldhome/oroussel/solvers/bsolo_mis
MD5SUM BENCH:  eaa1b6e946f643598c767cbea970679c  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-bell3b.opb
REAL COMMAND:  bsolo_mis /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-bell3b.opb
IDLAUNCH: 16695
/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:        910556 kB
Buffers:         28568 kB
Cached:          72596 kB
SwapCached:        972 kB
Active:          72592 kB
Inactive:        30684 kB
HighTotal:      131008 kB
HighFree:        69692 kB
LowTotal:       903652 kB
LowFree:        840864 kB
SwapTotal:     2097892 kB
SwapFree:      2095888 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5100 kB
Slab:            15056 kB
Committed_AS:    63840 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-23 09:39:27 (client local time) WITH STATUS 20 IN 0.669897 SECONDS
stats: 16695 7 0.669897 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Initial problem consists of 1663 variables and 147 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 0.643 s
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Raw data (loadavg): 0.65 0.84 0.88 2/55 5719
Raw data (stat): 5719 (runsolver) R 5718 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 820564670 1056768 100 4294967295 134512640 135381576 3221221680 3221216900 135158418 0 2147483391 1 90112 0 0 0 17 1 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 1032
[startup+0.698032 s]
Raw data (loadavg): 0.65 0.84 0.88 1/54 5719
Raw data (stat): 5719 (runsolver) R 5718 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 820564670 1056768 100 4294967295 134512640 135381576 3221221680 3221216900 135158418 0 2147483391 1 90112 0 0 0 17 1 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 0

Child status: 20
Real time (s): 0.697717
CPU time (s): 0.669897
CPU user time (s): 0.599908
CPU system time (s): 0.069989
CPU usage (%): 96.0127
Max. virtual memory (Kb): 1032
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####