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-bc1.opb
MD5SUM15670523760c6351fb6de07139f11abe
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 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 1073741824000000000000000000
Number of bits of the biggest number in a constraint 90
Biggest sum of numbers in a constraint 3221975665359866705114824704
Number of bits of the biggest sum of numbers92
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark1.11183
Number of variables27730
Total number of constraints3627
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)336
Number of constraints which are nor clauses,nor cardinality constraints3291
Minimum length of a constraint1
Maximum length of a constraint5701

Trace number 42587 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc2 THE 2005-06-16 12:07:40 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25808 boxname=wulflinc2 idbench=1108 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  15670523760c6351fb6de07139f11abe  /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-bc1.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc2/normalized-mps-v2-20-10-bc1.opb
IDLAUNCH: 25808
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.191
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		: 451.191
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:        674876 kB
Buffers:         19200 kB
Cached:         317464 kB
SwapCached:       1432 kB
Active:         113580 kB
Inactive:       225128 kB
HighTotal:      131008 kB
HighFree:          280 kB
LowTotal:       903652 kB
LowFree:        674596 kB
SwapTotal:     2097136 kB
SwapFree:      2094708 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5056 kB
Slab:            15220 kB
Committed_AS:    71904 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 12:09:32 (client local time) WITH STATUS 1 IN 109.93 SECONDS
stats: 25808 7 109.93 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 0.96 0.91 2/54 9938
Raw data (stat): 9938 (runsolver) R 9937 31399 31398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 970644170 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+10.0012 s]
Raw data (loadavg): 0.92 0.96 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 27185 0 0 0 939 60 0 0 25 0 1 0 970644170 87367680 16290 4294967295 134512640 135730672 3221224576 3220410168 134813522 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 21330 16290 301 301 0 21029 0
vsize: 85320
[startup+20.0028 s]
Raw data (loadavg): 0.93 0.96 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 55748 0 0 0 1876 123 0 0 25 0 1 0 970644170 173223936 33895 4294967295 134512640 135730672 3221224576 3220509520 134546371 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 42291 33895 301 301 0 41990 0
vsize: 169164
[startup+30.0031 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 96192 0 0 0 2796 203 0 0 25 0 1 0 970644170 296513536 52658 4294967295 134512640 135730672 3221224576 3220666704 134770106 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 72391 52658 301 301 0 72090 0
vsize: 289564
[startup+40.0032 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 112324 0 0 0 3761 238 0 0 25 0 1 0 970644170 344260608 68564 4294967295 134512640 135730672 3221224576 3220964812 134546428 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 84048 68564 301 301 0 83747 0
vsize: 336192
[startup+50.0039 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 127386 0 0 0 4728 272 0 0 25 0 1 0 970644170 362778624 83437 4294967295 134512640 135730672 3221224576 3220115116 134608033 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 88569 83437 301 301 0 88268 0
vsize: 354276
[startup+60.0042 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 177956 0 0 0 5627 373 0 0 25 0 1 0 970644170 542044160 90893 4294967295 134512640 135730672 3221224576 3220109508 134769940 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 132335 90893 301 301 0 132034 0
vsize: 529340
[startup+70.0053 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 190018 0 0 0 6599 401 0 0 25 0 1 0 970644170 575598592 102740 4294967295 134512640 135730672 3221224576 3220562912 134546483 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 140527 102740 301 301 0 140226 0
vsize: 562108
[startup+80.006 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 208262 0 0 0 7556 444 0 0 25 0 1 0 970644170 595062784 120743 4294967295 134512640 135730672 3221224576 3220947104 134546503 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 145279 120743 301 301 0 144978 0
vsize: 581116
[startup+90.0053 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 228331 0 0 0 8510 490 0 0 25 0 1 0 970644170 623718400 140579 4294967295 134512640 135730672 3221224576 3221055848 135285983 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 152275 140579 301 301 0 151974 0
vsize: 609100
[startup+100.005 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 237980 0 0 0 9491 509 0 0 25 0 1 0 970644170 683294720 150084 4294967295 134512640 135730672 3221224576 3219862976 135284212 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 166820 150084 301 301 0 166519 0
vsize: 667280
[startup+109.928 s]
Raw data (loadavg): 0.98 0.97 0.91 1/53 9938
Raw data (stat): 9938 (pb2sat-v2) R 9937 31399 31398 0 -1 0 237980 0 0 0 9491 509 0 0 25 0 1 0 970644170 683294720 150084 4294967295 134512640 135730672 3221224576 3219862976 135284212 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 166820 150084 301 301 0 166519 0
vsize: 0

Child status: 1
Real time (s): 109.927
CPU time (s): 109.93
CPU user time (s): 104.399
CPU system time (s): 5.53116
CPU usage (%): 100.003
Max. virtual memory (Kb): 667280
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####