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-v2-13-7/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-fffff800.opb
MD5SUMebc468f65dc9d723d06e698aa1880f66
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 160
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 8388600
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 15728640000000000
Number of bits of the biggest number in a constraint 54
Biggest sum of numbers in a constraint 383727820204435150
Number of bits of the biggest sum of numbers59
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.37679
Number of variables17080
Total number of constraints524
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 constraints524
Minimum length of a constraint20
Maximum length of a constraint5020

Trace number 26056 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-05-23 23:53:20 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=15745 boxname=wulflinc31 idbench=1212 idsolver=2 numberseed=0
MD5SUM SOLVER: 754786be69defe53c030aa54f111e0a7  /oldhome/oroussel/solvers/bsolo_lpr_cuts
MD5SUM BENCH:  ebc468f65dc9d723d06e698aa1880f66  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-fffff800.opb
REAL COMMAND:  bsolo_lpr_cuts /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-13-7-fffff800.opb
IDLAUNCH: 15745
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
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		: 451.153
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        702736 kB
Buffers:         20432 kB
Cached:         290336 kB
SwapCached:       1352 kB
Active:         231044 kB
Inactive:        82216 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        702484 kB
SwapTotal:     2097892 kB
SwapFree:      2095532 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5104 kB
Slab:            12984 kB
Committed_AS:    63860 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-23 23:53:23 (client local time) WITH STATUS 0 IN 2.58861 SECONDS
stats: 15745 7 2.58861 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
#### 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): 0.93 0.98 0.92 2/55 19669
Raw data (stat): 19669 (runsolver) R 19668 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 825688697 1056768 100 4294967295 134512640 135381576 3221221680 3221216896 135158418 0 2147483391 1 90112 0 0 0 17 1 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 1032
[startup+2.62961 s]
Raw data (loadavg): 0.93 0.98 0.92 1/54 19669
Raw data (stat): 19669 (runsolver) R 19668 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 825688697 1056768 100 4294967295 134512640 135381576 3221221680 3221216896 135158418 0 2147483391 1 90112 0 0 0 17 1 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 0

Child ended because it received signal 11 (SIGSEGV)
Real time (s): 2.62929
CPU time (s): 2.58861
CPU user time (s): 2.54461
CPU system time (s): 0.043993
CPU usage (%): 98.4527
Max. virtual memory (Kb): 1032
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####