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-vtp.base.opb
MD5SUM62492fa5ef4f36caec6c1eec4eeb566a
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 181
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 7516192762
Number of bits of the sum of numbers in the objective function 33
Biggest number in a constraint 198568686125056
Number of bits of the biggest number in a constraint 48
Biggest sum of numbers in a constraint 12817928787879752
Number of bits of the biggest sum of numbers54
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.260959
Number of variables4524
Total number of constraints262
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 constraints262
Minimum length of a constraint11
Maximum length of a constraint1080

Trace number 22367 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc11 THE 2005-04-22 03:21:52 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11581 boxname=wulflinc11 idbench=891 idsolver=11 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  62492fa5ef4f36caec6c1eec4eeb566a  /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-vtp.base.opb
REAL COMMAND:  minisat+ -S /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-vtp.base.opb /oldhome/oroussel/tmp/wulflinc11/normalized-mps-v2-20-10-vtp.base.opb
IDLAUNCH: 11581
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.028
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		: 451.028
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:        276308 kB
Buffers:         35000 kB
Cached:         701032 kB
SwapCached:          0 kB
Active:         243136 kB
Inactive:       495736 kB
HighTotal:      131008 kB
HighFree:        12544 kB
LowTotal:       903652 kB
LowFree:        263764 kB
SwapTotal:     2097136 kB
SwapFree:      2097048 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6820 kB
Slab:            13676 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-04-22 03:21:56 (client local time) WITH STATUS 1 IN 0.027994 SECONDS
stats: 11581 7 0.027994 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Parsing PB file...
PARSE ERROR! [line 273] Integer overflow. Big numbers not supported yet.
#### 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): 0.90 0.97 0.92 1/54 16746
Raw data (stat): 16746 (runsolver) D 16745 32461 32460 0 -1 64 4 0 0 0 0 0 0 0 18 0 1 0 492218736 1052672 99 4294967295 134512640 135381576 3221224432 3221219676 135158418 0 2147483391 7 90112 3225161850 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+0.366907 s]
Raw data (loadavg): 0.90 0.97 0.92 1/53 16746
Raw data (stat): 16746 (runsolver) D 16745 32461 32460 0 -1 64 4 0 0 0 0 0 0 0 18 0 1 0 492218736 1052672 99 4294967295 134512640 135381576 3221224432 3221219676 135158418 0 2147483391 7 90112 3225161850 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 0

Child status: 1
Real time (s): 0.366619
CPU time (s): 0.027994
CPU user time (s): 0.013997
CPU system time (s): 0.013997
CPU usage (%): 7.63572
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####