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-v2-20-10/plato.asu.edu/pub/unibo/normalized-mps-v2-20-10-usAbbrv.8.25_70.opb
MD5SUM7f148daab2a076d0407e04408057198b
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 204800
Optimality of the best value was proved NO
Number of terms in the objective function 135
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 1073849343
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1024000000
Number of bits of the biggest number in a constraint 30
Biggest sum of numbers in a constraint 2147557374
Number of bits of the biggest sum of numbers32
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1201.26
Number of variables20611
Total number of constraints5602
Number of constraints which are clauses563
Number of constraints which are cardinality constraints (but not clauses)1681
Number of constraints which are nor clauses,nor cardinality constraints3358
Minimum length of a constraint1
Maximum length of a constraint61

Trace number 27886 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc29 THE 2005-05-24 23:52:46 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=15317 boxname=wulflinc29 idbench=1179 idsolver=3 numberseed=0
MD5SUM SOLVER: 03a6a792daea978e4202f78851741568  /oldhome/oroussel/solvers/bsolo_mis
MD5SUM BENCH:  7f148daab2a076d0407e04408057198b  /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-usAbbrv.8.25_70.opb
REAL COMMAND:  bsolo_mis /oldhome/oroussel/tmp/wulflinc29/normalized-mps-v2-20-10-usAbbrv.8.25_70.opb
IDLAUNCH: 15317
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.020
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		: 451.020
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:        712280 kB
Buffers:         28308 kB
Cached:         272360 kB
SwapCached:        776 kB
Active:          46268 kB
Inactive:       256992 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        712028 kB
SwapTotal:     2097892 kB
SwapFree:      2096724 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5640 kB
Slab:            13456 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 23:52:56 (client local time) WITH STATUS 20 IN 10.4664 SECONDS
stats: 15317 7 10.4664 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Initial problem consists of 20611 variables and 3922 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 10.412 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): 0.73 0.91 0.96 2/54 24101
Raw data (stat): 24101 (runsolver) R 24100 20001 20000 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 834341375 1052672 99 4294967295 134512640 135381576 3221224480 3221219696 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0003 s]
Raw data (loadavg): 0.77 0.91 0.96 2/54 24101
Raw data (stat): 24101 (bsolo_mis) R 24100 20001 20000 0 -1 0 23691 0 0 0 942 56 0 0 25 0 1 0 834341375 110862336 23669 4294967295 134512640 134714540 3221224576 3221223056 134540339 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 27066 23669 1111 63 0 27003 0
vsize: 108264
[startup+10.477 s]
Raw data (loadavg): 0.77 0.91 0.96 1/53 24101
Raw data (stat): 24101 (bsolo_mis) R 24100 20001 20000 0 -1 0 23691 0 0 0 942 56 0 0 25 0 1 0 834341375 110862336 23669 4294967295 134512640 134714540 3221224576 3221223056 134540339 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 27066 23669 1111 63 0 27003 0
vsize: 0

Child status: 20
Real time (s): 10.4766
CPU time (s): 10.4664
CPU user time (s): 9.80951
CPU system time (s): 0.6569
CPU usage (%): 99.9023
Max. virtual memory (Kb): 108264
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####