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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-brandy.opb
MD5SUMebc4ba4a34e7e59de4a64f55746baa39
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 60
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 2147483646
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 10936060477440
Number of bits of the biggest number in a constraint 44
Biggest sum of numbers in a constraint 138160507849056
Number of bits of the biggest sum of numbers47
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.430933
Number of variables7470
Total number of constraints182
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints182
Minimum length of a constraint30
Maximum length of a constraint3540

Trace number 29398 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc23 THE 2005-05-25 07:36:17 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=20829 boxname=wulflinc23 idbench=817 idsolver=14 numberseed=0
MD5SUM SOLVER: d29da23ec752be69e0579424c0f0767e  /oldhome/oroussel/solvers/sat4jPseudoBis.jar
MD5SUM BENCH:  ebc4ba4a34e7e59de4a64f55746baa39  /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-brandy.opb
REAL COMMAND:  java -server -Xms650M -Xmx650M -jar /oldhome/oroussel/solvers/sat4jPseudoBis.jar /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-brandy.opb
IDLAUNCH: 20829
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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:        763424 kB
Buffers:         32136 kB
Cached:         217260 kB
SwapCached:        640 kB
Active:          75532 kB
Inactive:       176328 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        763172 kB
SwapTotal:     2097136 kB
SwapFree:      2096032 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5628 kB
Slab:            13612 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-25 07:36:50 (client local time) WITH STATUS 20 IN 37.6493 SECONDS
stats: 20829 7 37.6493 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c SAT4J: a SATisfiability library for Java (c) 2004-2005 Daniel Le Berre
c This is free software under the GNU LGPL licence. See www.sat4j.org for details.
c version Special PB05 Second trial
c --- Begin Solver configuration ---
c org.sat4j.minisat.uip.FirstUIP@1e4cbc4
c org.sat4j.minisat.constraints.PBMinDataStructure@1fdc96c
c org.sat4j.minisat.learning.MiniSATLearning@b2fd8f
c conflictBoundIncFactor=1.5 learntBoundIncFactor=1.1 initLearntBoundConstraintFactor=0.5 initConflictBound=100 
c 
c --- End Solver configuration ---
c solving /oldhome/oroussel/tmp/wulflinc23/normalized-mps-v2-20-10-brandy.opb
c reading problem ... done. Time 23.731 ms.
c #vars     7470
c #constraints  301
c starts	: 1
c conflicts	: 2
c decisions	: 61
c propagations	: 3390
c inspects	: 2781
c learned literals	: 0
c learned binary clauses	: 0
c learned ternary clauses	: 0
c learned clauses	: 1
c root simplifications	: 1
s UNSATISFIABLE
c Total CPU time (ms) : 31.363
#### 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): 1.06 1.03 1.00 2/54 14227
Raw data (stat): 14227 (runsolver) R 14226 5562 5561 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 837129533 1052672 99 4294967295 134512640 135381576 3221224400 3221219620 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0007 s]
Raw data (loadavg): 1.05 1.03 1.00 2/63 14236
Raw data (stat): 14227 (java) R 14226 5562 5561 0 -1 0 18041 0 1 0 800 39 0 0 25 0 10 0 837129533 856526848 20432 4294967295 134512640 134569956 3221224368 3221214456 1077558376 0 4 3 23756 0 0 0 17 0 0 0
Raw data (statm): 209113 20432 13086 16 0 209097 0
vsize: 836452
[startup+20.0013 s]
Raw data (loadavg): 1.04 1.03 1.00 2/63 14236
Raw data (stat): 14227 (java) R 14226 5562 5561 0 -1 0 18041 0 1 0 1666 39 0 0 25 0 10 0 837129533 856436736 21852 4294967295 134512640 134569956 3221224368 3221214404 1076461336 0 4 3 23756 0 0 0 17 1 0 0
Raw data (statm): 209091 21852 13086 16 0 209075 0
vsize: 836364
[startup+30.0014 s]
Raw data (loadavg): 1.04 1.02 1.00 3/64 14237
Raw data (stat): 14227 (java) R 14226 5562 5561 0 -1 0 18069 0 1 0 2543 40 0 0 25 0 11 0 837129533 856932352 23326 4294967295 134512640 134569956 3221224368 3221214808 1130919497 0 4 3 23756 0 0 0 17 0 0 0
Raw data (statm): 209212 23326 13086 16 0 209196 0
vsize: 836848
[startup+32.4117 s]
Raw data (loadavg): 1.03 1.02 1.00 1/53 14238
Raw data (stat): 14227 (java) R 14226 5562 5561 0 -1 0 18069 0 1 0 2543 40 0 0 25 0 11 0 837129533 856932352 23326 4294967295 134512640 134569956 3221224368 3221214808 1130919497 0 4 3 23756 0 0 0 17 0 0 0
Raw data (statm): 209212 23326 13086 16 0 209196 0
vsize: 0

Child status: 20
Real time (s): 32.4114
CPU time (s): 37.6493
CPU user time (s): 37.0294
CPU system time (s): 0.619905
CPU usage (%): 116.161
Max. virtual memory (Kb): 836848
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####