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-shell.opb
MD5SUM6ed5be5611955015db1d7f0a8e864c5a
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 27174
Biggest coefficient in the objective function 34015805440
Number of bits for the biggest coefficient in the objective function 35
Sum of the numbers in the objective function 501951111686
Number of bits of the sum of numbers in the objective function 39
Biggest number in a constraint 34015805440
Number of bits of the biggest number in a constraint 35
Biggest sum of numbers in a constraint 501951111686
Number of bits of the biggest sum of numbers39
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.220965
Number of variables30807
Total number of constraints653
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 constraints653
Minimum length of a constraint16
Maximum length of a constraint1040

Trace number 40234 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc4 THE 2005-06-08 04:56:28 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=28305 boxname=wulflinc4 idbench=1261 idsolver=20 numberseed=0
MD5SUM SOLVER: f6aa7fb267fa9710116626be7e6d3048  /oldhome/oroussel/solvers/bsolo_lpr-v2
MD5SUM BENCH:  6ed5be5611955015db1d7f0a8e864c5a  /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-shell.opb
REAL COMMAND:  bsolo_lpr-v2 /oldhome/oroussel/tmp/wulflinc4/normalized-mps-v2-13-7-shell.opb
IDLAUNCH: 28305
/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:        832852 kB
Buffers:         12112 kB
Cached:         168032 kB
SwapCached:        872 kB
Active:          24432 kB
Inactive:       157764 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        832600 kB
SwapTotal:     2097136 kB
SwapFree:      2095212 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           4916 kB
Slab:            13984 kB
Committed_AS:    71784 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-08 04:58:48 (client local time) WITH STATUS 20 IN 139.158 SECONDS
stats: 28305 7 139.158 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c INFO: OSL Context initialized.
c Initial problem consists of 30807 variables and 1181 constraints.
s UNSATISFIABLE
c Exit Code: 20
c Total time: 139.099 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): 0.79 0.94 0.90 1/54 27447
Raw data (stat): 27447 (runsolver) R 27446 21152 21151 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 898913768 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+10.0006 s]
Raw data (loadavg): 0.83 0.94 0.90 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 1555 0 0 0 993 3 0 0 25 0 1 0 898913768 19046400 1475 4294967295 134512640 134716908 3221224576 3221222804 1077414413 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 4650 1475 1111 63 0 4587 0
vsize: 18600
[startup+20.0011 s]
Raw data (loadavg): 0.85 0.94 0.90 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 2558 0 0 0 1991 6 0 0 25 0 1 0 898913768 23150592 2478 4294967295 134512640 134716908 3221224576 3221222664 1077378037 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 5652 2478 1111 63 0 5589 0
vsize: 22608
[startup+30.0009 s]
Raw data (loadavg): 0.87 0.94 0.90 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 3631 0 0 0 2989 9 0 0 25 0 1 0 898913768 27570176 3551 4294967295 134512640 134716908 3221224576 3221222804 1077414358 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 6731 3551 1111 63 0 6668 0
vsize: 26924
[startup+40.0011 s]
Raw data (loadavg): 0.89 0.94 0.90 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 4847 0 0 0 3986 11 0 0 25 0 1 0 898913768 32505856 4767 4294967295 134512640 134716908 3221224576 3221223232 134527932 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 7936 4767 1111 63 0 7873 0
vsize: 31744
[startup+50.0016 s]
Raw data (loadavg): 0.91 0.94 0.90 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 6112 0 0 0 4984 14 0 0 25 0 1 0 898913768 37769216 6032 4294967295 134512640 134716908 3221224576 3221222804 1077414388 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 9221 6032 1111 63 0 9158 0
vsize: 36884
[startup+60.0015 s]
Raw data (loadavg): 0.92 0.95 0.91 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 7438 0 0 0 5982 16 0 0 25 0 1 0 898913768 43130880 7358 4294967295 134512640 134716908 3221224576 3221222804 1077414336 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10530 7358 1111 63 0 10467 0
vsize: 42120
[startup+70.0027 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 8794 0 0 0 6980 18 0 0 25 0 1 0 898913768 48635904 8714 4294967295 134512640 134716908 3221224576 3221222804 1077414413 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 11874 8714 1111 63 0 11811 0
vsize: 47496
[startup+80.0032 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 10245 0 0 0 7978 21 0 0 25 0 1 0 898913768 54562816 10165 4294967295 134512640 134716908 3221224576 3221222804 1077414363 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 13321 10165 1111 63 0 13258 0
vsize: 53284
[startup+90.0034 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 11822 0 0 0 8976 23 0 0 25 0 1 0 898913768 61157376 11742 4294967295 134512640 134716908 3221224576 3221222804 1077414363 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 14931 11742 1111 63 0 14868 0
vsize: 59724
[startup+100.004 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 13385 0 0 0 9972 26 0 0 25 0 1 0 898913768 67514368 13305 4294967295 134512640 134716908 3221224576 3221222804 1077414382 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 16483 13305 1111 63 0 16420 0
vsize: 65932
[startup+110.005 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 15194 0 0 0 10968 30 0 0 25 0 1 0 898913768 74989568 15114 4294967295 134512640 134716908 3221224576 3221223232 134527946 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 18308 15114 1111 63 0 18245 0
vsize: 73232
[startup+120.006 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 17106 0 0 0 11965 33 0 0 25 0 1 0 898913768 82743296 17026 4294967295 134512640 134716908 3221224576 3221223232 134527946 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 20201 17026 1111 63 0 20138 0
vsize: 80804
[startup+130.006 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 18951 0 0 0 12962 37 0 0 25 0 1 0 898913768 90361856 18871 4294967295 134512640 134716908 3221224576 3221223232 134527932 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 22061 18871 1111 63 0 21998 0
vsize: 88244
[startup+139.171 s]
Raw data (loadavg): 0.98 0.95 0.91 1/53 27447
Raw data (stat): 27447 (bsolo_lpr-v2) R 27446 21152 21151 0 -1 0 18951 0 0 0 12962 37 0 0 25 0 1 0 898913768 90361856 18871 4294967295 134512640 134716908 3221224576 3221223232 134527932 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 22061 18871 1111 63 0 21998 0
vsize: 0

Child status: 20
Real time (s): 139.17
CPU time (s): 139.158
CPU user time (s): 138.557
CPU system time (s): 0.600908
CPU usage (%): 99.991
Max. virtual memory (Kb): 88244
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####