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-mkc1.opb
MD5SUMaa2dd2336a4c1c55f4fb3e1e24927c56
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 25306
Biggest coefficient in the objective function 20480000
Number of bits for the biggest coefficient in the objective function 25
Sum of the numbers in the objective function 56454927307
Number of bits of the sum of numbers in the objective function 36
Biggest number in a constraint 536870912000
Number of bits of the biggest number in a constraint 39
Biggest sum of numbers in a constraint 1129539816832
Number of bits of the biggest sum of numbers41
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.25396
Number of variables27743
Total number of constraints8734
Number of constraints which are clauses712
Number of constraints which are cardinality constraints (but not clauses)3174
Number of constraints which are nor clauses,nor cardinality constraints4848
Minimum length of a constraint1
Maximum length of a constraint25072

Trace number 35340 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc12 THE 2005-05-28 12:56:34 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24644 boxname=wulflinc12 idbench=1116 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  aa2dd2336a4c1c55f4fb3e1e24927c56  /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-mkc1.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc12/normalized-mps-v2-20-10-mkc1.opb
IDLAUNCH: 24644
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.091
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		: 451.091
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:        747848 kB
Buffers:         35984 kB
Cached:         214528 kB
SwapCached:        340 kB
Active:          20660 kB
Inactive:       241636 kB
HighTotal:      131008 kB
HighFree:        91308 kB
LowTotal:       903652 kB
LowFree:        656540 kB
SwapTotal:     2097136 kB
SwapFree:      2096008 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5380 kB
Slab:            18792 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-28 12:58:26 (client local time) WITH STATUS 1 IN 111.27 SECONDS
stats: 24644 7 111.27 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): 0.92 0.95 0.90 2/54 12499
Raw data (stat): 12499 (runsolver) R 12498 32284 32283 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 806744547 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+10.0008 s]
Raw data (loadavg): 0.93 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 2195 0 0 0 993 6 0 0 25 0 1 0 806744547 8089600 1520 4294967295 134512640 135726644 3221224576 3221221664 134556160 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 1975 1520 300 300 0 1675 0
vsize: 7900
[startup+20.0017 s]
Raw data (loadavg): 0.94 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 25663 0 0 0 1936 63 0 0 25 0 1 0 806744547 78454784 17611 4294967295 134512640 135726644 3221224576 3211145296 134557510 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 19154 17611 300 300 0 18854 0
vsize: 76616
[startup+30.0016 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 57405 0 0 0 2866 133 0 0 25 0 1 0 806744547 187277312 35040 4294967295 134512640 135726644 3221224576 3211219600 134780454 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 45722 35040 300 300 0 45422 0
vsize: 182888
[startup+40.0024 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 84774 0 0 0 3807 192 0 0 25 0 1 0 806744547 253411328 52457 4294967295 134512640 135726644 3221224576 3211129664 134767070 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 61868 52457 300 300 0 61568 0
vsize: 247472
[startup+50.0033 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 115186 0 0 0 4740 259 0 0 25 0 1 0 806744547 363655168 70340 4294967295 134512640 135726644 3221224576 3211318376 135280487 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 88783 70340 300 300 0 88483 0
vsize: 355132
[startup+60.0166 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 155453 0 0 0 5663 338 0 0 25 0 1 0 806744547 493092864 90993 4294967295 134512640 135726644 3221224576 3211088952 135281813 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 120384 90993 300 300 0 120084 0
vsize: 481536
[startup+70.017 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 169174 0 0 0 6631 370 0 0 25 0 1 0 806744547 493092864 104435 4294967295 134512640 135726644 3221224576 3211385664 134766536 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 120384 104435 300 300 0 120084 0
vsize: 481536
[startup+80.0179 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 211482 0 0 0 7543 458 0 0 25 0 1 0 806744547 618356736 121929 4294967295 134512640 135726644 3221224576 3211815408 135280446 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 150966 121929 300 300 0 150666 0
vsize: 603864
[startup+90.0182 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 229970 0 0 0 8503 498 0 0 25 0 1 0 806744547 681242624 140185 4294967295 134512640 135726644 3221224576 3211228512 135288897 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 166319 140185 300 300 0 166019 0
vsize: 665276
[startup+100.018 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 249811 0 0 0 9464 537 0 0 25 0 1 0 806744547 713392128 159778 4294967295 134512640 135726644 3221224576 3211956088 135138155 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 174168 159778 300 300 0 173868 0
vsize: 696672
[startup+110.042 s]
Raw data (loadavg): 0.98 0.97 0.91 2/54 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 249813 0 0 0 10454 549 0 0 25 0 1 0 806744547 402472960 97832 4294967295 134512640 135726644 3221224576 3221222832 135279111 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 98260 97832 300 300 0 97960 0
vsize: 393040
[startup+111.28 s]
Raw data (loadavg): 0.98 0.97 0.91 1/53 12499
Raw data (stat): 12499 (pb2sat) R 12498 32284 32283 0 -1 0 249813 0 0 0 10454 549 0 0 25 0 1 0 806744547 402472960 97832 4294967295 134512640 135726644 3221224576 3221222832 135279111 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 98260 97832 300 300 0 97960 0
vsize: 0

Child status: 1
Real time (s): 111.28
CPU time (s): 111.27
CPU user time (s): 105.576
CPU system time (s): 5.69413
CPU usage (%): 99.9911
Max. virtual memory (Kb): 696672
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####