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/plato.asu.edu/pub/unibo/normalized-mps-v2-20-10-tr12-30.opb
MD5SUM81fe81e3ddb87532751f87d8d69ff2f0
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 benchmark0.18997
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 26117 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-05-24 08:32:25 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=15276 boxname=wulflinc31 idbench=1176 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  81fe81e3ddb87532751f87d8d69ff2f0  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-tr12-30.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-tr12-30.opb
IDLAUNCH: 15276
/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:        760836 kB
Buffers:         23608 kB
Cached:         229360 kB
SwapCached:        944 kB
Active:          67228 kB
Inactive:       187816 kB
HighTotal:      131008 kB
HighFree:        44576 kB
LowTotal:       903652 kB
LowFree:        716260 kB
SwapTotal:     2097892 kB
SwapFree:      2095920 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5104 kB
Slab:            13016 kB
Committed_AS:    63860 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 08:33:07 (client local time) WITH STATUS 20 IN 41.1807 SECONDS
stats: 15276 7 41.1807 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: 41.125 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
Raw data (loadavg): 1.11 1.00 1.00 2/55 25991
Raw data (stat): 25991 (runsolver) R 25990 7876 7672 0 -1 64 5 0 0 0 0 0 0 0 19 0 1 0 828803593 1056768 100 4294967295 134512640 135381576 3221221680 3221216900 135158418 0 2147483391 1 90112 0 0 0 17 0 0 0
Raw data (statm): 258 100 215 215 0 43 0
vsize: 1032
[startup+10.0009 s]
Raw data (loadavg): 1.09 1.00 1.00 2/55 25991
Raw data (stat): 25991 (bsolo_lpr) R 25990 7876 7672 0 -1 0 3621 0 0 0 986 10 0 0 25 0 1 0 828803593 27619328 3544 4294967295 134512640 134714508 3221221776 3221220004 1077414385 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 6743 3544 1111 63 0 6680 0
vsize: 26972
[startup+20.0017 s]
Raw data (loadavg): 1.08 1.00 1.00 2/55 25991
Raw data (stat): 25991 (bsolo_lpr) R 25990 7876 7672 0 -1 0 4902 0 0 0 1983 13 0 0 25 0 1 0 828803593 32878592 4825 4294967295 134512640 134714508 3221221776 3221219636 1076880017 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 8027 4825 1111 63 0 7964 0
vsize: 32108
[startup+30.0016 s]
Raw data (loadavg): 1.06 1.00 1.00 2/55 25991
Raw data (stat): 25991 (bsolo_lpr) R 25990 7876 7672 0 -1 0 7335 0 0 0 2976 20 0 0 25 0 1 0 828803593 42926080 7258 4294967295 134512640 134714508 3221221776 3221220004 1077414360 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 10480 7258 1111 63 0 10417 0
vsize: 41920
[startup+40.0025 s]
Raw data (loadavg): 1.05 1.00 1.00 2/55 25991
Raw data (stat): 25991 (bsolo_lpr) R 25990 7876 7672 0 -1 0 14640 0 0 0 3955 40 0 0 25 0 1 0 828803593 72859648 14563 4294967295 134512640 134714508 3221221776 3221219436 1077272270 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 17788 14563 1111 63 0 17725 0
vsize: 71152
[startup+41.2226 s]
Raw data (loadavg): 1.05 1.00 1.00 1/54 25991
Raw data (stat): 25991 (bsolo_lpr) R 25990 7876 7672 0 -1 0 14640 0 0 0 3955 40 0 0 25 0 1 0 828803593 72859648 14563 4294967295 134512640 134714508 3221221776 3221219436 1077272270 0 0 1 0 0 0 0 17 0 0 0
Raw data (statm): 17788 14563 1111 63 0 17725 0
vsize: 0

Child status: 20
Real time (s): 41.222
CPU time (s): 41.1807
CPU user time (s): 40.7078
CPU system time (s): 0.472928
CPU usage (%): 99.8999
Max. virtual memory (Kb): 71152
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####