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/MIPLIB/miplib3/normalized-mps-v2-13-7-qnet1.opb
MD5SUM67a03e26dfeeecb274c72e4a32ff53e9
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 2480
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 130023300
Number of bits of the sum of numbers in the objective function 27
Biggest number in a constraint 20945120000
Number of bits of the biggest number in a constraint 35
Biggest sum of numbers in a constraint 59755435295
Number of bits of the biggest sum of numbers36
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.048992
Number of variables4140
Total number of constraints632
Number of constraints which are clauses40
Number of constraints which are cardinality constraints (but not clauses)48
Number of constraints which are nor clauses,nor cardinality constraints544
Minimum length of a constraint2
Maximum length of a constraint77

Trace number 35667 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc28 THE 2005-05-28 13:44:08 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24975 boxname=wulflinc28 idbench=1447 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  67a03e26dfeeecb274c72e4a32ff53e9  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-13-7-qnet1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-13-7-qnet1.opb
IDLAUNCH: 24975
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.077
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		: 451.077
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:        692480 kB
Buffers:         40532 kB
Cached:         259928 kB
SwapCached:        780 kB
Active:          28924 kB
Inactive:       291696 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        692228 kB
SwapTotal:     2097640 kB
SwapFree:      2096164 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5460 kB
Slab:            15624 kB
Committed_AS:    63568 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-28 13:46:01 (client local time) WITH STATUS 20 IN 112.23 SECONDS
stats: 24975 7 112.23 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c [startup+52.6904 s]  setting bit 26 to 0
c CONFLICT during preprocess 
c [startup+54.9557 s]  setting bit 25 to 0
c CONFLICT during preprocess 
c [startup+57.2122 s]  setting bit 24 to 0
c CONFLICT during preprocess 
c [startup+59.4466 s]  setting bit 23 to 0
c CONFLICT during preprocess 
c [startup+61.6815 s]  setting bit 22 to 0
c CONFLICT during preprocess 
c [startup+63.9173 s]  setting bit 21 to 0
c CONFLICT during preprocess 
c [startup+66.1589 s]  setting bit 20 to 0
c CONFLICT during preprocess 
c [startup+68.4268 s]  setting bit 19 to 0
c CONFLICT during preprocess 
c [startup+70.6622 s]  setting bit 18 to 0
c CONFLICT during preprocess 
c [startup+72.897 s]  setting bit 17 to 0
c CONFLICT during preprocess 
c [startup+75.1333 s]  setting bit 16 to 0
c CONFLICT during preprocess 
c [startup+77.3683 s]  setting bit 15 to 0
c CONFLICT during preprocess 
c [startup+79.603 s]  setting bit 14 to 0
c CONFLICT during preprocess 
c [startup+81.8382 s]  setting bit 13 to 0
c CONFLICT during preprocess 
c [startup+84.0731 s]  setting bit 12 to 0
c CONFLICT during preprocess 
c [startup+86.3076 s]  setting bit 11 to 0
c CONFLICT during preprocess 
c [startup+88.5432 s]  setting bit 10 to 0
c CONFLICT during preprocess 
c [startup+90.7781 s]  setting bit 9 to 0
c CONFLICT during preprocess 
c [startup+93.0208 s]  setting bit 8 to 0
c CONFLICT during preprocess 
c [startup+95.2794 s]  setting bit 7 to 0
c CONFLICT during preprocess 
c [startup+97.5417 s]  setting bit 6 to 0
c CONFLICT during preprocess 
c [startup+99.8054 s]  setting bit 5 to 0
c CONFLICT during preprocess 
c [startup+102.066 s]  setting bit 4 to 0
c CONFLICT during preprocess 
c [startup+104.328 s]  setting bit 3 to 0
c CONFLICT during preprocess 
c [startup+106.592 s]  setting bit 2 to 0
c CONFLICT during preprocess 
c [startup+108.853 s]  setting bit 1 to 0
c CONFLICT during preprocess 
c [startup+111.109 s]  setting bit 0 to 0
s UNSATISFIABLE
#### 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): 0.91 0.95 0.90 2/54 7685
Raw data (stat): 7685 (runsolver) R 7684 24821 24820 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 865264722 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0005 s]
Raw data (loadavg): 0.93 0.95 0.90 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 30637 0 0 0 937 62 0 0 25 0 1 0 865264722 91283456 19719 4294967295 134512640 135726644 3221224576 3220824128 134554579 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 22286 19719 300 300 0 21986 0
vsize: 89144
[startup+20.0022 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 59293 0 0 0 1878 121 0 0 25 0 1 0 865264722 176869376 37413 4294967295 134512640 135726644 3221224576 3221218656 135280427 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 43181 37413 300 300 0 42881 0
vsize: 172724
[startup+30.0034 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 89286 0 0 0 2815 184 0 0 25 0 1 0 865264722 269070336 44677 4294967295 134512640 135726644 3221224576 3221223072 134743955 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 65691 44677 300 300 0 65391 0
vsize: 262764
[startup+40.0026 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 89287 0 0 0 3812 186 0 0 25 0 1 0 865264722 269070336 44678 4294967295 134512640 135726644 3221224576 3221223168 134743857 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 65691 44678 300 300 0 65391 0
vsize: 262764
[startup+50.0036 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 89288 0 0 0 4809 188 0 0 25 0 1 0 865264722 269070336 44679 4294967295 134512640 135726644 3221224576 3221223196 135337969 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 65691 44679 300 300 0 65391 0
vsize: 262764
[startup+60.0033 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 93719 0 0 0 5798 199 0 0 25 0 1 0 865264722 273592320 45798 4294967295 134512640 135726644 3221224576 3221222888 134761847 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 66795 45798 300 300 0 66495 0
vsize: 267180
[startup+70.0037 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 98136 0 0 0 6787 210 0 0 25 0 1 0 865264722 269070336 44695 4294967295 134512640 135726644 3221224576 3221223120 134746052 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 65691 44695 300 300 0 65391 0
vsize: 262764
[startup+80.0049 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 103657 0 0 0 7774 223 0 0 25 0 1 0 865264722 273592320 45800 4294967295 134512640 135726644 3221224576 3221222892 134761832 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 66795 45800 300 300 0 66495 0
vsize: 267180
[startup+90.0044 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 108073 0 0 0 8763 234 0 0 25 0 1 0 865264722 269070336 44696 4294967295 134512640 135726644 3221224576 3221223120 134745779 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 65691 44696 300 300 0 65391 0
vsize: 262764
[startup+100.005 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 112490 0 0 0 9753 244 0 0 25 0 1 0 865264722 269070336 44697 4294967295 134512640 135726644 3221224576 3221223152 134738011 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 65691 44697 300 300 0 65391 0
vsize: 262764
[startup+110.006 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 118010 0 0 0 10739 258 0 0 25 0 1 0 865264722 273592320 45801 4294967295 134512640 135726644 3221224576 3221222872 134761841 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 66795 45801 300 300 0 66495 0
vsize: 267180
[startup+112.266 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 7685
Raw data (stat): 7685 (pb2sat) R 7684 24821 24820 0 -1 0 118010 0 0 0 10739 258 0 0 25 0 1 0 865264722 273592320 45801 4294967295 134512640 135726644 3221224576 3221222872 134761841 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 66795 45801 300 300 0 66495 0
vsize: 0

Child status: 20
Real time (s): 112.266
CPU time (s): 112.23
CPU user time (s): 109.552
CPU system time (s): 2.67759
CPU usage (%): 99.9681
Max. virtual memory (Kb): 267180
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####