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-CMS750_4.opb
MD5SUM7cb58e3aea22e107ecbc4e74969c24f1
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 780
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 1074509823
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1024000000
Number of bits of the biggest number in a constraint 30
Biggest sum of numbers in a constraint 2147731454
Number of bits of the biggest sum of numbers32
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark22.6916
Number of variables142226
Total number of constraints28077
Number of constraints which are clauses2438
Number of constraints which are cardinality constraints (but not clauses)7196
Number of constraints which are nor clauses,nor cardinality constraints18443
Minimum length of a constraint1
Maximum length of a constraint61

Trace number 41303 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc4 THE 2005-06-09 10:12:41 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=29371 boxname=wulflinc4 idbench=1155 idsolver=21 numberseed=0
MD5SUM SOLVER: 174a32271cb3bba0a277d6d7724e60fb  /oldhome/oroussel/solvers/bsolo_lpr_cuts-v2
MD5SUM BENCH:  7cb58e3aea22e107ecbc4e74969c24f1  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-CMS750_4.opb
REAL COMMAND:  bsolo_lpr_cuts-v2 /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-20-10-CMS750_4.opb
IDLAUNCH: 29371
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.169
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	: 2
cpu MHz		: 451.169
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:        812120 kB
Buffers:         13464 kB
Cached:         187896 kB
SwapCached:        872 kB
Active:          43596 kB
Inactive:       159832 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        811868 kB
SwapTotal:     2097136 kB
SwapFree:      2095216 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           4908 kB
Slab:            13404 kB
Committed_AS:    71796 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-09 10:14:04 (client local time) WITH STATUS 20 IN 81.6566 SECONDS
stats: 29371 7 81.6566 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 142226 variables and 20882 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 81.385 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): 0.94 0.98 0.91 1/54 13437
Raw data (stat): 13437 (runsolver) R 13436 21152 21151 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 909452369 884736 94 4294967295 134512640 135332820 3221224448 3221219628 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0013 s]
Raw data (loadavg): 0.95 0.98 0.91 2/54 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 53936 0 0 0 879 118 0 0 25 0 1 0 909452369 233230336 53553 4294967295 134512640 134716908 3221224560 3221222864 134567410 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 56941 53556 1111 63 0 56878 0
vsize: 227764
[startup+20.0016 s]
Raw data (loadavg): 0.96 0.98 0.91 2/54 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 87609 0 0 0 1807 190 0 0 25 0 1 0 909452369 368783360 86380 4294967295 134512640 134716908 3221224560 3221222844 1077399562 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 90035 86380 1111 63 0 89972 0
vsize: 360140
[startup+30.0014 s]
Raw data (loadavg): 0.96 0.98 0.91 2/54 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 103884 0 0 0 2775 222 0 0 25 0 1 0 909452369 435380224 102655 4294967295 134512640 134716908 3221224560 3221222220 1077246155 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 106294 102656 1111 63 0 106231 0
vsize: 425176
[startup+40.0027 s]
Raw data (loadavg): 0.97 0.98 0.91 2/54 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 119584 0 0 0 3743 254 0 0 25 0 1 0 909452369 499580928 118355 4294967295 134512640 134716908 3221224560 3221221324 1077198002 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 121968 118355 1111 63 0 121905 0
vsize: 487872
[startup+50.0031 s]
Raw data (loadavg): 0.97 0.98 0.91 2/54 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 124877 0 0 0 4730 268 0 0 25 0 1 0 909452369 521269248 123648 4294967295 134512640 134716908 3221224560 3221221180 1077253709 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 127263 123648 1111 63 0 127200 0
vsize: 509052
[startup+60.004 s]
Raw data (loadavg): 0.98 0.98 0.91 2/54 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 127202 0 0 0 5723 275 0 0 25 0 1 0 909452369 530866176 125973 4294967295 134512640 134716908 3221224560 3221222848 134566780 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 129606 125973 1111 63 0 129543 0
vsize: 518424
[startup+70.0042 s]
Raw data (loadavg): 0.98 0.98 0.91 2/54 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 130184 0 0 0 6715 283 0 0 25 0 1 0 909452369 543031296 128955 4294967295 134512640 134716908 3221224560 3221221180 1077244631 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 132576 128955 1111 63 0 132513 0
vsize: 530304
[startup+80.0038 s]
Raw data (loadavg): 0.98 0.98 0.91 2/54 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 132983 0 0 0 7708 290 0 0 25 0 1 0 909452369 554520576 131754 4294967295 134512640 134716908 3221224560 3221221020 1077359371 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 135381 131754 1111 63 0 135318 0
vsize: 541524
[startup+81.669 s]
Raw data (loadavg): 0.98 0.98 0.91 1/53 13437
Raw data (stat): 13437 (bsolo_lpr_cuts-) R 13436 21152 21151 0 -1 0 132983 0 0 0 7708 290 0 0 25 0 1 0 909452369 554520576 131754 4294967295 134512640 134716908 3221224560 3221221020 1077359371 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 135381 131754 1111 63 0 135318 0
vsize: 0

Child status: 20
Real time (s): 81.6683
CPU time (s): 81.6566
CPU user time (s): 78.2121
CPU system time (s): 3.44448
CPU usage (%): 99.9856
Max. virtual memory (Kb): 541524
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####