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/MIPLIB/miplib/normalized-mps-v2-20-10-fixnet4.opb
MD5SUMc588849b8a310510484f5bf14bc15ec4
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 13668
Biggest coefficient in the objective function 5368709120
Number of bits for the biggest coefficient in the objective function 33
Sum of the numbers in the objective function 2423922177090
Number of bits of the sum of numbers in the objective function 42
Biggest number in a constraint 5368709120
Number of bits of the biggest number in a constraint 33
Biggest sum of numbers in a constraint 2423922177090
Number of bits of the biggest sum of numbers42
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.122981
Number of variables14036
Total number of constraints978
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)378
Number of constraints which are nor clauses,nor cardinality constraints600
Minimum length of a constraint1
Maximum length of a constraint1523

Trace number 39884 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc6 THE 2005-06-07 22:03:06 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=27955 boxname=wulflinc6 idbench=911 idsolver=20 numberseed=0
MD5SUM SOLVER: f6aa7fb267fa9710116626be7e6d3048  /oldhome/oroussel/solvers/bsolo_lpr-v2
MD5SUM BENCH:  c588849b8a310510484f5bf14bc15ec4  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-fixnet4.opb
REAL COMMAND:  bsolo_lpr-v2 /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-fixnet4.opb
IDLAUNCH: 27955
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.042
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		: 451.042
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:        903016 kB
Buffers:         12504 kB
Cached:          97400 kB
SwapCached:       1004 kB
Active:          27404 kB
Inactive:        84584 kB
HighTotal:      131008 kB
HighFree:        40404 kB
LowTotal:       903652 kB
LowFree:        862612 kB
SwapTotal:     2097136 kB
SwapFree:      2095172 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5004 kB
Slab:            14060 kB
Committed_AS:    63736 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-07 22:03:45 (client local time) WITH STATUS 20 IN 38.9521 SECONDS
stats: 27955 7 38.9521 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 14036 variables and 634 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 38.92 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
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.93 0.98 0.91 2/54 20618
Raw data (stat): 20618 (runsolver) R 20617 25568 25567 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 896441735 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0004 s]
Raw data (loadavg): 0.94 0.98 0.91 2/54 20618
Raw data (stat): 20618 (bsolo_lpr-v2) R 20617 25568 25567 0 -1 0 2522 0 0 0 990 7 0 0 25 0 1 0 896441735 23121920 2442 4294967295 134512640 134716908 3221224576 3221222804 1077414360 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 5645 2442 1111 63 0 5582 0
vsize: 22580
[startup+20.0009 s]
Raw data (loadavg): 0.95 0.98 0.91 2/54 20618
Raw data (stat): 20618 (bsolo_lpr-v2) R 20617 25568 25567 0 -1 0 5090 0 0 0 1986 12 0 0 25 0 1 0 896441735 33615872 5010 4294967295 134512640 134716908 3221224576 3221222804 1077414413 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 8207 5010 1111 63 0 8144 0
vsize: 32828
[startup+30.0011 s]
Raw data (loadavg): 0.95 0.98 0.91 2/54 20618
Raw data (stat): 20618 (bsolo_lpr-v2) R 20617 25568 25567 0 -1 0 8519 0 0 0 2981 17 0 0 25 0 1 0 896441735 47771648 8439 4294967295 134512640 134716908 3221224576 3221223232 134527932 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 11663 8440 1111 63 0 11600 0
vsize: 46652
[startup+38.9632 s]
Raw data (loadavg): 0.96 0.98 0.91 1/53 20618
Raw data (stat): 20618 (bsolo_lpr-v2) R 20617 25568 25567 0 -1 0 8519 0 0 0 2981 17 0 0 25 0 1 0 896441735 47771648 8439 4294967295 134512640 134716908 3221224576 3221223232 134527932 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 11663 8440 1111 63 0 11600 0
vsize: 0

Child status: 20
Real time (s): 38.9629
CPU time (s): 38.9521
CPU user time (s): 38.6651
CPU system time (s): 0.286956
CPU usage (%): 99.9721
Max. virtual memory (Kb): 46652
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####