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/miplib2003/normalized-mps-v2-20-10-tr12-30.opb
MD5SUM3275929be36299f0a23379c5fe15d197
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 11160
Biggest coefficient in the objective function 2147483648
Number of bits for the biggest coefficient in the objective function 32
Sum of the numbers in the objective function 869952060630
Number of bits of the sum of numbers in the objective function 40
Biggest number in a constraint 2147483648
Number of bits of the biggest number in a constraint 32
Biggest sum of numbers in a constraint 869952060630
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.19097
Number of variables21960
Total number of constraints1110
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)360
Number of constraints which are nor clauses,nor cardinality constraints750
Minimum length of a constraint1
Maximum length of a constraint372

Trace number 41154 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-06-09 07:16:03 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=29225 boxname=wulflinc5 idbench=1009 idsolver=21 numberseed=0
MD5SUM SOLVER: 174a32271cb3bba0a277d6d7724e60fb  /oldhome/oroussel/solvers/bsolo_lpr_cuts-v2
MD5SUM BENCH:  3275929be36299f0a23379c5fe15d197  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-tr12-30.opb
REAL COMMAND:  bsolo_lpr_cuts-v2 /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-tr12-30.opb
IDLAUNCH: 29225
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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		: 451.007
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:        794540 kB
Buffers:         16296 kB
Cached:         202652 kB
SwapCached:        692 kB
Active:          25684 kB
Inactive:       195312 kB
HighTotal:      131008 kB
HighFree:         7196 kB
LowTotal:       903652 kB
LowFree:        787344 kB
SwapTotal:     2097136 kB
SwapFree:      2095464 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5076 kB
Slab:            13536 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-09 07:16:21 (client local time) WITH STATUS 20 IN 18.1742 SECONDS
stats: 29225 7 18.1742 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 21960 variables and 1080 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 18.138 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 0.96 0.91 1/54 30721
Raw data (stat): 30721 (runsolver) R 30720 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 908401954 884736 94 4294967295 134512640 135332820 3221224448 3221219628 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+9.99969 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 30721
Raw data (stat): 30721 (bsolo_lpr_cuts-) R 30720 7266 7265 0 -1 0 6131 0 0 0 985 12 0 0 25 0 1 0 908401954 38162432 6051 4294967295 134512640 134716908 3221224560 3221223216 134527932 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9317 6051 1111 63 0 9254 0
vsize: 37268
[startup+18.1985 s]
Raw data (loadavg): 0.94 0.97 0.91 1/53 30721
Raw data (stat): 30721 (bsolo_lpr_cuts-) R 30720 7266 7265 0 -1 0 6131 0 0 0 985 12 0 0 25 0 1 0 908401954 38162432 6051 4294967295 134512640 134716908 3221224560 3221223216 134527932 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9317 6051 1111 63 0 9254 0
vsize: 0

Child status: 20
Real time (s): 18.1979
CPU time (s): 18.1742
CPU user time (s): 17.7883
CPU system time (s): 0.385941
CPU usage (%): 99.87
Max. virtual memory (Kb): 37268
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####