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-pilot4.opb
MD5SUM51b37b22b0e13f30b25801aa060ca6d7
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 120
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 4294967292
Number of bits of the sum of numbers in the objective function 32
Biggest number in a constraint -3498116692108640256
Number of bits of the biggest number in a constraint 64
Biggest sum of numbers in a constraint 99417465468392882176
Number of bits of the biggest sum of numbers67
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.988849
Number of variables26494
Total number of constraints657
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 constraints657
Minimum length of a constraint10
Maximum length of a constraint1427

Trace number 26729 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc21 THE 2005-05-24 17:06:27 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=11038 boxname=wulflinc21 idbench=850 idsolver=1 numberseed=0
MD5SUM SOLVER: e973bb179fd0e01ec8c7277096f1c3ef  /oldhome/oroussel/solvers/bsolo_lpr
MD5SUM BENCH:  51b37b22b0e13f30b25801aa060ca6d7  /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-pilot4.opb
REAL COMMAND:  bsolo_lpr /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-pilot4.opb
IDLAUNCH: 11038
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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:        873264 kB
Buffers:          6780 kB
Cached:         133120 kB
SwapCached:       1064 kB
Active:          23560 kB
Inactive:       118944 kB
HighTotal:      131008 kB
HighFree:        48748 kB
LowTotal:       903652 kB
LowFree:        824516 kB
SwapTotal:     2097892 kB
SwapFree:      2096256 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5644 kB
Slab:            13056 kB
Committed_AS:    63912 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-24 17:06:28 (client local time) WITH STATUS 0 IN 0.052991 SECONDS
stats: 11038 7 0.052991 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c ERROR Parsing file!!!
c ERROR parsing line: -15625*IAGR01_bit_10 -31250*IAGR01_bit_9 -62500*IAGR01_bit_8 -125000*IAGR01_bit_7 -250000*IAGR01_bit_6 -500000*IAGR01_bit_5 -1000000*IAGR01_bit_4 -2000000*IAGR01_bit_3 -4000000*IAGR01_bit_2 -8000000*IAGR01_bit_1 -16000000*IAGR01_bit0 -32000000*IAGR01_bit1 -64000000*IAGR01_bit2 -128000000*IAGR01_bit3 -256000000*IAGR01_bit4 -512000000*IAGR01_bit5 -1024000000*IAGR01_bit6 -2048000000*IAGR01_bit7 -4096000000*IAGR01_bit8 -8192000000*IAGR01_bit9 -16384000000*IAGR01_bit10 -32768000000*IAGR01_bit11 >= -34176671872;
c Cannot parse input file name: /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-pilot4.opb
s UNKNOWN
c Exit Code: 0
c Total time: 0.045 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): 0.66 0.81 0.90 1/55 2889
Raw data (stat): 2889 (runsolver) D 2888 32363 32362 0 -1 64 4 0 0 0 0 0 0 0 18 0 1 0 709172874 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 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+0.269569 s]
Raw data (loadavg): 0.66 0.81 0.90 1/54 2889
Raw data (stat): 2889 (runsolver) D 2888 32363 32362 0 -1 64 4 0 0 0 0 0 0 0 18 0 1 0 709172874 1052672 99 4294967295 134512640 135381576 3221224496 3221219712 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: 0
Real time (s): 0.269279
CPU time (s): 0.052991
CPU user time (s): 0.029995
CPU system time (s): 0.022996
CPU usage (%): 19.6788
Max. virtual memory (Kb): 1028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####