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-air04.opb
MD5SUMee388359e66788d310d5d5b34d6465c1
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 63236
Optimality of the best value was proved NO
Number of terms in the objective function 8904
Biggest coefficient in the objective function 2258
Number of bits for the biggest coefficient in the objective function 12
Sum of the numbers in the objective function 5135151
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 2258
Number of bits of the biggest number in a constraint 12
Biggest sum of numbers in a constraint 5135151
Number of bits of the biggest sum of numbers23
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1185.16
Number of variables8904
Total number of constraints9727
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)9727
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint368

Trace number 35181 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc20 THE 2005-05-28 12:22:21 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24485 boxname=wulflinc20 idbench=957 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  ee388359e66788d310d5d5b34d6465c1  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-air04.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-air04.opb
IDLAUNCH: 24485
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.215
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		: 451.215
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        700828 kB
Buffers:         34288 kB
Cached:         275692 kB
SwapCached:        644 kB
Active:          43204 kB
Inactive:       268864 kB
HighTotal:      131008 kB
HighFree:        23408 kB
LowTotal:       903652 kB
LowFree:        677420 kB
SwapTotal:     2097892 kB
SwapFree:      2096312 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5104 kB
Slab:            15984 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-28 12:24:04 (client local time) WITH STATUS 1 IN 102.907 SECONDS
stats: 24485 7 102.907 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 0.93 0.90 2/54 10858
Raw data (stat): 10858 (runsolver) R 10857 25399 25398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 864767197 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+10.0014 s]
Raw data (loadavg): 0.92 0.93 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 26087 0 0 0 942 57 0 0 25 0 1 0 864767197 80453632 14977 4294967295 134512640 135726644 3221224576 3218734092 134604481 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 19642 14977 300 300 0 19342 0
vsize: 78568
[startup+20.002 s]
Raw data (loadavg): 0.94 0.93 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 54584 0 0 0 1881 118 0 0 25 0 1 0 864767197 176693248 32232 4294967295 134512640 135726644 3221224576 3219012000 134780348 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 43138 32232 300 300 0 42838 0
vsize: 172552
[startup+30.0023 s]
Raw data (loadavg): 0.94 0.94 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 81748 0 0 0 2824 175 0 0 25 0 1 0 864767197 245530624 49459 4294967295 134512640 135726644 3221224576 3218763264 134739281 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 59944 49459 300 300 0 59644 0
vsize: 239776
[startup+40.0035 s]
Raw data (loadavg): 0.95 0.94 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 110096 0 0 0 3764 236 0 0 25 0 1 0 864767197 350367744 65290 4294967295 134512640 135726644 3221224576 3218055752 134784091 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 85539 65290 300 300 0 85239 0
vsize: 342156
[startup+50.009 s]
Raw data (loadavg): 0.96 0.94 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 150965 0 0 0 4689 311 0 0 25 0 1 0 864767197 552181760 105042 4294967295 134512640 135726644 3221224576 3217712960 134771726 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 134810 105045 300 300 0 134510 0
vsize: 539240
[startup+60.0094 s]
Raw data (loadavg): 0.97 0.94 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 165073 0 0 0 5654 346 0 0 25 0 1 0 864767197 487636992 100411 4294967295 134512640 135726644 3221224576 3219314828 135105707 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 119052 100411 300 300 0 118752 0
vsize: 476208
[startup+70.0094 s]
Raw data (loadavg): 0.97 0.94 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 203567 0 0 0 6572 429 0 0 25 0 1 0 864767197 599519232 114089 4294967295 134512640 135726644 3221224576 3218722936 135282351 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 146367 114089 300 300 0 146067 0
vsize: 585468
[startup+80.0102 s]
Raw data (loadavg): 0.97 0.94 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 220880 0 0 0 7531 470 0 0 25 0 1 0 864767197 660647936 131178 4294967295 134512640 135726644 3221224576 3218770092 134604449 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 161291 131178 300 300 0 160991 0
vsize: 645164
[startup+90.0096 s]
Raw data (loadavg): 0.98 0.95 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 241050 0 0 0 8492 508 0 0 25 0 1 0 864767197 692817920 151086 4294967295 134512640 135726644 3221224576 3218092536 135282351 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 169145 151086 300 300 0 168845 0
vsize: 676580
[startup+100.01 s]
Raw data (loadavg): 0.98 0.95 0.91 2/54 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 246854 0 0 0 9464 536 0 0 25 0 1 0 864767197 392536064 95406 4294967295 134512640 135726644 3221224576 3221222764 135277543 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 95834 95406 300 300 0 95534 0
vsize: 383336
[startup+102.906 s]
Raw data (loadavg): 0.98 0.95 0.91 1/53 10858
Raw data (stat): 10858 (pb2sat) R 10857 25399 25398 0 -1 0 246854 0 0 0 9464 536 0 0 25 0 1 0 864767197 392536064 95406 4294967295 134512640 135726644 3221224576 3221222764 135277543 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 95834 95406 300 300 0 95534 0
vsize: 0

Child status: 1
Real time (s): 102.906
CPU time (s): 102.907
CPU user time (s): 97.3472
CPU system time (s): 5.56015
CPU usage (%): 100.002
Max. virtual memory (Kb): 676580
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####