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/milp/normalized-mps-v2-20-10-nug08.opb
MD5SUMc527241c4d9537dec2ef265de58c54af
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 107
Optimality of the best value was proved NO
Number of terms in the objective function 20160
Biggest coefficient in the objective function 20971520
Number of bits for the biggest coefficient in the objective function 25
Sum of the numbers in the objective function 9042910800
Number of bits of the sum of numbers in the objective function 34
Biggest number in a constraint 20971520
Number of bits of the biggest number in a constraint 25
Biggest sum of numbers in a constraint 9042910800
Number of bits of the biggest sum of numbers34
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark922.173
Number of variables32640
Total number of constraints912
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 constraints912
Minimum length of a constraint160
Maximum length of a constraint160

Trace number 42617 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-06-16 12:53:10 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25837 boxname=wulflinc5 idbench=1137 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  c527241c4d9537dec2ef265de58c54af  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-nug08.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-nug08.opb
IDLAUNCH: 25837
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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	: 2
cpu MHz		: 451.007
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:        734548 kB
Buffers:         18752 kB
Cached:         257888 kB
SwapCached:        664 kB
Active:          24680 kB
Inactive:       254036 kB
HighTotal:      131008 kB
HighFree:         9072 kB
LowTotal:       903652 kB
LowFree:        725476 kB
SwapTotal:     2097136 kB
SwapFree:      2095532 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5156 kB
Slab:            15628 kB
Committed_AS:    63716 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 12:54:48 (client local time) WITH STATUS 1 IN 97.4172 SECONDS
stats: 25837 7 97.4172 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc
#### 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 14447
Raw data (stat): 14447 (runsolver) R 14446 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 970913156 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+10.0021 s]
Raw data (loadavg): 0.92 0.95 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 10344 0 0 0 974 24 0 0 25 0 1 0 970913156 31096832 6382 4294967295 134512640 135730672 3221224576 3221169000 134787685 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 7592 6382 301 301 0 7291 0
vsize: 30368
[startup+20.0032 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 45280 0 0 0 1892 107 0 0 25 0 1 0 970913156 136355840 23426 4294967295 134512640 135730672 3221224576 3221220992 135282716 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 33290 23426 301 301 0 32989 0
vsize: 133160
[startup+30.0028 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 73789 0 0 0 2834 165 0 0 25 0 1 0 970913156 218116096 42491 4294967295 134512640 135730672 3221224576 3221192656 134788136 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 53251 42491 301 301 0 52950 0
vsize: 213004
[startup+40.0036 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 100071 0 0 0 3775 224 0 0 25 0 1 0 970913156 302002176 56225 4294967295 134512640 135730672 3221224576 3221168980 134550990 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 73731 56225 301 301 0 73430 0
vsize: 294924
[startup+50.0047 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 140837 0 0 0 4692 307 0 0 25 0 1 0 970913156 496111616 95885 4294967295 134512640 135730672 3221224576 3221203792 134775271 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 121121 95885 301 301 0 120820 0
vsize: 484484
[startup+60.0051 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 181322 0 0 0 5602 397 0 0 25 0 1 0 970913156 540483584 94044 4294967295 134512640 135730672 3221224576 3221149344 134786142 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 131954 94044 301 301 0 131653 0
vsize: 527816
[startup+70.0053 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 195777 0 0 0 6568 431 0 0 25 0 1 0 970913156 574038016 108237 4294967295 134512640 135730672 3221224576 3221194932 134612215 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 140146 108237 301 301 0 139845 0
vsize: 560584
[startup+80.0061 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 212535 0 0 0 7526 473 0 0 25 0 1 0 970913156 574038016 124692 4294967295 134512640 135730672 3221224576 3221205968 134786278 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 140146 124692 301 301 0 139845 0
vsize: 560584
[startup+90.0064 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 229275 0 0 0 8478 520 0 0 25 0 1 0 970913156 638562304 141191 4294967295 134512640 135730672 3221224576 3221175856 134770658 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 155899 141191 301 301 0 155598 0
vsize: 623596
[startup+97.4309 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 14447
Raw data (stat): 14447 (pb2sat-v2) R 14446 7266 7265 0 -1 0 229275 0 0 0 8478 520 0 0 25 0 1 0 970913156 638562304 141191 4294967295 134512640 135730672 3221224576 3221175856 134770658 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 155899 141191 301 301 0 155598 0
vsize: 0

Child status: 1
Real time (s): 97.4302
CPU time (s): 97.4172
CPU user time (s): 91.6331
CPU system time (s): 5.78412
CPU usage (%): 99.9866
Max. virtual memory (Kb): 623596
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####