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/MIPLIB/miplib2003/normalized-mps-v2-20-10-cap6000.opb
MD5SUMf72618c4c62a4e83b66d53971e0bdc53
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -285037
Optimality of the best value was proved NO
Number of terms in the objective function 5995
Biggest coefficient in the objective function 91110
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 12969603
Number of bits of the sum of numbers in the objective function 24
Biggest number in a constraint 800000
Number of bits of the biggest number in a constraint 20
Biggest sum of numbers in a constraint 28761906
Number of bits of the biggest sum of numbers25
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1175.16
Number of variables6000
Total number of constraints8176
Number of constraints which are clauses222
Number of constraints which are cardinality constraints (but not clauses)7919
Number of constraints which are nor clauses,nor cardinality constraints35
Minimum length of a constraint1
Maximum length of a constraint6000

Trace number 31886 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc18 THE 2005-05-27 06:58:53 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=23317 boxname=wulflinc18 idbench=961 idsolver=16 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  f72618c4c62a4e83b66d53971e0bdc53  /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-cap6000.opb
REAL COMMAND:  minisat+_script -cb -gs /oldhome/oroussel/tmp/wulflinc18/normalized-mps-v2-20-10-cap6000.opb
IDLAUNCH: 23317
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.177
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		: 451.177
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:        909980 kB
Buffers:         21972 kB
Cached:          77724 kB
SwapCached:        604 kB
Active:          18636 kB
Inactive:        83328 kB
HighTotal:      131008 kB
HighFree:        52360 kB
LowTotal:       903652 kB
LowFree:        857620 kB
SwapTotal:     2097892 kB
SwapFree:      2096616 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5668 kB
Slab:            17068 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-27 06:59:54 (client local time) WITH STATUS 139 IN 60.4688 SECONDS
stats: 23317 7 60.4688 139
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
/oldhome/oroussel/solvers/minisat+_script: line 9: 13155 Segmentation fault      $XDIR/minisat+_64-bit_static -try "$@"
#### 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): 0.91 0.95 0.90 2/54 13151
Raw data (stat): 13151 (runsolver) R 13150 24172 24171 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 854170870 1052672 99 4294967295 134512640 135381576 3221224464 3221219672 135158418 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0002 s]
Raw data (loadavg): 0.93 0.95 0.90 2/55 13155
Raw data (stat): 13151 (minisat+_script) S 13150 24172 24171 0 -1 0 275 239 0 0 0 0 0 0 19 0 1 0 854170870 2174976 226 4294967295 134512640 135087896 3221224528 3221223800 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (statm): 531 226 485 147 0 384 0
vsize: 2124
[startup+20.0016 s]
Raw data (loadavg): 0.94 0.96 0.91 2/55 13155
Raw data (stat): 13151 (minisat+_script) S 13150 24172 24171 0 -1 0 275 239 0 0 0 0 0 0 19 0 1 0 854170870 2174976 226 4294967295 134512640 135087896 3221224528 3221223800 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (statm): 531 226 485 147 0 384 0
vsize: 2124
[startup+30.0021 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 13155
Raw data (stat): 13151 (minisat+_script) S 13150 24172 24171 0 -1 0 275 239 0 0 0 0 0 0 19 0 1 0 854170870 2174976 226 4294967295 134512640 135087896 3221224528 3221223800 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (statm): 531 226 485 147 0 384 0
vsize: 2124
[startup+40.0019 s]
Raw data (loadavg): 0.95 0.96 0.91 2/55 13155
Raw data (stat): 13151 (minisat+_script) S 13150 24172 24171 0 -1 0 275 239 0 0 0 0 0 0 19 0 1 0 854170870 2174976 226 4294967295 134512640 135087896 3221224528 3221223800 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (statm): 531 226 485 147 0 384 0
vsize: 2124
[startup+50.0053 s]
Raw data (loadavg): 0.96 0.96 0.91 2/55 13155
Raw data (stat): 13151 (minisat+_script) S 13150 24172 24171 0 -1 0 275 239 0 0 0 0 0 0 19 0 1 0 854170870 2174976 226 4294967295 134512640 135087896 3221224528 3221223800 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (statm): 531 226 485 147 0 384 0
vsize: 2124
[startup+60.0057 s]
Raw data (loadavg): 0.97 0.96 0.91 2/55 13155
Raw data (stat): 13151 (minisat+_script) S 13150 24172 24171 0 -1 0 275 239 0 0 0 0 0 0 19 0 1 0 854170870 2174976 226 4294967295 134512640 135087896 3221224528 3221223800 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (statm): 531 226 485 147 0 384 0
vsize: 2124
[startup+60.4728 s]
Raw data (loadavg): 0.97 0.96 0.91 1/53 13155
Raw data (stat): 13151 (minisat+_script) S 13150 24172 24171 0 -1 0 275 239 0 0 0 0 0 0 19 0 1 0 854170870 2174976 226 4294967295 134512640 135087896 3221224528 3221223800 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (statm): 531 226 485 147 0 384 0
vsize: 0

Child status: 139
Real time (s): 60.4725
CPU time (s): 60.4688
CPU user time (s): 55.1766
CPU system time (s): 5.29219
CPU usage (%): 99.9939
Max. virtual memory (Kb): 2124
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####