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 35335 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc10 THE 2005-05-28 12:56:13 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24636 boxname=wulflinc10 idbench=1108 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  15670523760c6351fb6de07139f11abe  /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-20-10-bc1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc10/normalized-mps-v2-20-10-bc1.opb
IDLAUNCH: 24636
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 450.999
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 450.999
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:        662872 kB
Buffers:          2284 kB
Cached:         348376 kB
SwapCached:         84 kB
Active:         104292 kB
Inactive:       248992 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        662620 kB
SwapTotal:     2097136 kB
SwapFree:      2096728 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5880 kB
Slab:            12588 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-28 12:58:02 (client local time) WITH STATUS 1 IN 105.049 SECONDS
stats: 24636 7 105.049 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 23525
Raw data (stat): 23525 (runsolver) R 23524 15547 15546 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 806763409 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+10.001 s]
Raw data (loadavg): 0.93 0.95 0.90 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 27910 0 0 0 937 61 0 0 25 0 1 0 806763409 88236032 17006 4294967295 134512640 135726644 3221224592 3220376600 135297949 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 21542 17006 300 300 0 21242 0
vsize: 86168
[startup+20.0015 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 57510 0 0 0 1875 124 0 0 25 0 1 0 806763409 175579136 35636 4294967295 134512640 135726644 3221224592 3220643212 134558971 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 42866 35636 300 300 0 42566 0
vsize: 171464
[startup+30.0021 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 97923 0 0 0 2791 208 0 0 25 0 1 0 806763409 296435712 54357 4294967295 134512640 135726644 3221224592 3220781488 134554546 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 72372 54357 300 300 0 72072 0
vsize: 289488
[startup+40.0027 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 116089 0 0 0 3751 248 0 0 25 0 1 0 806763409 349589504 72285 4294967295 134512640 135726644 3221224592 3221162496 135280580 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 85349 72285 300 300 0 85049 0
vsize: 341396
[startup+50.0042 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 136364 0 0 0 4705 294 0 0 25 0 1 0 806763409 505311232 91973 4294967295 134512640 135726644 3221224592 3220182320 134771659 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 123367 91973 300 300 0 123067 0
vsize: 493468
[startup+60.0043 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 181573 0 0 0 5615 384 0 0 25 0 1 0 806763409 541966336 94445 4294967295 134512640 135726644 3221224592 3220384676 135280431 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 132316 94445 300 300 0 132016 0
vsize: 529264
[startup+70.0044 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 194373 0 0 0 6582 418 0 0 25 0 1 0 806763409 575520768 107017 4294967295 134512640 135726644 3221224592 3220615852 134604449 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 140508 107017 300 300 0 140208 0
vsize: 562032
[startup+80.0237 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 216064 0 0 0 7539 463 0 0 25 0 1 0 806763409 606339072 128455 4294967295 134512640 135726644 3221224592 3221197052 134604441 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 148032 128455 300 300 0 147732 0
vsize: 592128
[startup+90.023 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 233255 0 0 0 8501 501 0 0 25 0 1 0 806763409 681406464 145447 4294967295 134512640 135726644 3221224592 3221149172 134728617 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 166359 145447 300 300 0 166059 0
vsize: 665436
[startup+100.024 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 243780 0 0 0 9478 524 0 0 25 0 1 0 806763409 685056000 155769 4294967295 134512640 135726644 3221224592 3220701240 135102849 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 167250 155769 300 300 0 166950 0
vsize: 669000
[startup+105.052 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 23525
Raw data (stat): 23525 (pb2sat) R 23524 15547 15546 0 -1 0 243780 0 0 0 9478 524 0 0 25 0 1 0 806763409 685056000 155769 4294967295 134512640 135726644 3221224592 3220701240 135102849 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 167250 155769 300 300 0 166950 0
vsize: 0

Child status: 1
Real time (s): 105.052
CPU time (s): 105.049
CPU user time (s): 99.4889
CPU system time (s): 5.56015
CPU usage (%): 99.9975
Max. virtual memory (Kb): 669000
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####