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/miplib/normalized-mps-v2-20-10-mod008.opb
MD5SUMfbdb3cf321a85412feefcaac30780520
Bench Categoryoptimization, small integers (OPTSMALLINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 307
Optimality of the best value was proved NO
Number of terms in the objective function 319
Biggest coefficient in the objective function 87
Number of bits for the biggest coefficient in the objective function 7
Sum of the numbers in the objective function 23554
Number of bits of the sum of numbers in the objective function 15
Biggest number in a constraint 22000
Number of bits of the biggest number in a constraint 15
Biggest sum of numbers in a constraint 1027256
Number of bits of the biggest sum of numbers20
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.01584
Number of variables319
Total number of constraints325
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)319
Number of constraints which are nor clauses,nor cardinality constraints6
Minimum length of a constraint1
Maximum length of a constraint231

Trace number 42406 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc6 THE 2005-06-16 06:57:00 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25626 boxname=wulflinc6 idbench=926 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  fbdb3cf321a85412feefcaac30780520  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-mod008.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-mod008.opb
IDLAUNCH: 25626
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.042
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		: 451.042
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:        738996 kB
Buffers:         33276 kB
Cached:         240076 kB
SwapCached:       1028 kB
Active:          29260 kB
Inactive:       246296 kB
HighTotal:      131008 kB
HighFree:        15400 kB
LowTotal:       903652 kB
LowFree:        723596 kB
SwapTotal:     2097136 kB
SwapFree:      2095200 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5088 kB
Slab:            14468 kB
Committed_AS:    63808 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 06:58:58 (client local time) WITH STATUS 1 IN 117.668 SECONDS
stats: 25626 7 117.668 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): 0.83 0.93 0.90 1/54 15466
Raw data (stat): 15466 (runsolver) R 15465 25568 25567 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 968774841 884736 94 4294967295 134512640 135332820 3221224464 3221219644 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+10.0004 s]
Raw data (loadavg): 0.86 0.93 0.90 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 29213 0 0 0 937 62 0 0 25 0 1 0 968774841 88887296 18110 4294967295 134512640 135730672 3221224576 3221118188 135301640 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 21701 18110 301 301 0 21400 0
vsize: 86804
[startup+20.0011 s]
Raw data (loadavg): 0.88 0.94 0.90 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 56556 0 0 0 1881 119 0 0 25 0 1 0 968774841 173637632 34254 4294967295 134512640 135730672 3221224576 3221131768 134546567 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 42392 34254 301 301 0 42091 0
vsize: 169568
[startup+30.0012 s]
Raw data (loadavg): 0.90 0.94 0.90 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 96211 0 0 0 2804 195 0 0 25 0 1 0 968774841 298643456 51734 4294967295 134512640 135730672 3221224576 3221133584 134786923 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 72911 51734 301 301 0 72610 0
vsize: 291644
[startup+40.0009 s]
Raw data (loadavg): 0.91 0.94 0.90 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 109683 0 0 0 3776 224 0 0 25 0 1 0 968774841 340443136 64998 4294967295 134512640 135730672 3221224576 3221146144 134546414 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 83116 64998 301 301 0 82815 0
vsize: 332464
[startup+50.0015 s]
Raw data (loadavg): 0.93 0.94 0.90 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 128985 0 0 0 4740 260 0 0 25 0 1 0 968774841 368873472 84073 4294967295 134512640 135730672 3221224576 3221143876 135282783 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 90057 84073 301 301 0 89756 0
vsize: 360228
[startup+60.0016 s]
Raw data (loadavg): 0.94 0.94 0.90 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 183706 0 0 0 5639 362 0 0 25 0 1 0 968774841 695590912 119249 4294967295 134512640 135730672 3221224576 3221149072 134788521 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 169822 119249 301 301 0 169521 0
vsize: 679288
[startup+70.0013 s]
Raw data (loadavg): 0.95 0.94 0.91 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 199376 0 0 0 6602 398 0 0 25 0 1 0 968774841 628477952 110166 4294967295 134512640 135730672 3221224576 3221158688 134546351 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 153437 110166 301 301 0 153136 0
vsize: 613748
[startup+80.0019 s]
Raw data (loadavg): 0.95 0.94 0.91 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 213327 0 0 0 7572 429 0 0 25 0 1 0 968774841 637538304 123901 4294967295 134512640 135730672 3221224576 3221165352 135285245 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 155649 123901 301 301 0 155348 0
vsize: 622596
[startup+90.0021 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 231991 0 0 0 8536 465 0 0 25 0 1 0 968774841 665415680 142342 4294967295 134512640 135730672 3221224576 3221172560 134786302 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 162455 142342 301 301 0 162154 0
vsize: 649820
[startup+100.002 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 248877 0 0 0 9502 499 0 0 25 0 1 0 968774841 740962304 159028 4294967295 134512640 135730672 3221224576 3221176192 134784071 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 180899 159028 301 301 0 180598 0
vsize: 723596
[startup+110.002 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 261246 0 0 0 10476 525 0 0 25 0 1 0 968774841 760860672 171245 4294967295 134512640 135730672 3221224576 3221223012 135104789 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 185757 171245 301 301 0 185456 0
vsize: 743028
[startup+117.644 s]
Raw data (loadavg): 0.97 0.95 0.91 1/53 15466
Raw data (stat): 15466 (pb2sat-v2) R 15465 25568 25567 0 -1 0 261246 0 0 0 10476 525 0 0 25 0 1 0 968774841 760860672 171245 4294967295 134512640 135730672 3221224576 3221223012 135104789 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 185757 171245 301 301 0 185456 0
vsize: 0

Child status: 1
Real time (s): 117.644
CPU time (s): 117.668
CPU user time (s): 112.056
CPU system time (s): 5.61215
CPU usage (%): 100.02
Max. virtual memory (Kb): 743028
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####