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-v2-13-7/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-25fv47.opb
MD5SUMc9f866c0690dc1af70eb2575fc6ba22f
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 12780
Biggest coefficient in the objective function 524288000000
Number of bits for the biggest coefficient in the objective function 39
Sum of the numbers in the objective function 10374607341450
Number of bits of the sum of numbers in the objective function 44
Biggest number in a constraint 125278616027136
Number of bits of the biggest number in a constraint 47
Biggest sum of numbers in a constraint 793896153991050
Number of bits of the biggest sum of numbers50
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.267958
Number of variables31420
Total number of constraints820
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints820
Minimum length of a constraint20
Maximum length of a constraint6800

Trace number 42665 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-06-16 13:37:19 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25886 boxname=wulflinc1 idbench=1186 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  c9f866c0690dc1af70eb2575fc6ba22f  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-25fv47.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-25fv47.opb
IDLAUNCH: 25886
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
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		: 451.053
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:        770976 kB
Buffers:         17460 kB
Cached:         221220 kB
SwapCached:       1156 kB
Active:          27460 kB
Inactive:       213552 kB
HighTotal:      131008 kB
HighFree:        30828 kB
LowTotal:       903652 kB
LowFree:        740148 kB
SwapTotal:     2097136 kB
SwapFree:      2094896 kB
Dirty:              52 kB
Writeback:           0 kB
Mapped:           5364 kB
Slab:            16736 kB
Committed_AS:    92704 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 13:39:09 (client local time) WITH STATUS 1 IN 109.507 SECONDS
stats: 25886 7 109.507 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): 0.84 0.92 0.90 2/55 19415
Raw data (stat): 19415 (runsolver) R 19414 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 914320867 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+10.0002 s]
Raw data (loadavg): 0.86 0.92 0.90 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 19962 0 0 0 956 43 0 0 25 0 1 0 914320867 59080704 12024 4294967295 134512640 135730672 3221224576 3221221008 134607973 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 14424 12024 301 301 0 14123 0
vsize: 57696
[startup+20.001 s]
Raw data (loadavg): 0.88 0.92 0.90 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 49454 0 0 0 1896 102 0 0 25 0 1 0 914320867 158793728 27231 4294967295 134512640 135730672 3221224576 3221209100 135301642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 38768 27231 301 301 0 38467 0
vsize: 155072
[startup+30.0025 s]
Raw data (loadavg): 0.90 0.92 0.90 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 75410 0 0 0 2850 149 0 0 25 0 1 0 914320867 223236096 43787 4294967295 134512640 135730672 3221224576 3221201804 134608033 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 54501 43787 301 301 0 54200 0
vsize: 218004
[startup+40.0026 s]
Raw data (loadavg): 0.91 0.93 0.90 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 98457 0 0 0 3798 201 0 0 25 0 1 0 914320867 307122176 54339 4294967295 134512640 135730672 3221224576 3221190272 134611268 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 74981 54339 301 301 0 74680 0
vsize: 299924
[startup+50.0034 s]
Raw data (loadavg): 0.93 0.93 0.90 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 114163 0 0 0 4768 231 0 0 25 0 1 0 914320867 317669376 69798 4294967295 134512640 135730672 3221224576 3221210028 135301605 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 77556 69798 301 301 0 77255 0
vsize: 310224
[startup+60.0032 s]
Raw data (loadavg): 0.94 0.93 0.91 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 149054 0 0 0 5705 294 0 0 25 0 1 0 914320867 428851200 86128 4294967295 134512640 135730672 3221224576 3221198296 135284325 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 104700 86128 301 301 0 104399 0
vsize: 418800
[startup+70.004 s]
Raw data (loadavg): 0.95 0.93 0.91 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 183373 0 0 0 6632 367 0 0 25 0 1 0 914320867 563097600 95687 4294967295 134512640 135730672 3221224576 3221159456 134784071 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 137475 95687 301 301 0 137174 0
vsize: 549900
[startup+80.0048 s]
Raw data (loadavg): 0.95 0.93 0.91 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 196154 0 0 0 7607 393 0 0 25 0 1 0 914320867 563097600 108232 4294967295 134512640 135730672 3221224576 3221175560 135284328 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 137475 108232 301 301 0 137174 0
vsize: 549900
[startup+90.005 s]
Raw data (loadavg): 0.96 0.94 0.91 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 212934 0 0 0 8571 428 0 0 25 0 1 0 914320867 578195456 124763 4294967295 134512640 135730672 3221224576 3221123388 134608033 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 141161 124763 301 301 0 140860 0
vsize: 564644
[startup+100.005 s]
Raw data (loadavg): 0.97 0.94 0.91 2/55 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 228998 0 0 0 9542 458 0 0 25 0 1 0 914320867 652181504 140635 4294967295 134512640 135730672 3221224576 3221128928 134742871 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 159224 140635 301 301 0 158923 0
vsize: 636896
[startup+109.506 s]
Raw data (loadavg): 0.97 0.94 0.91 1/54 19415
Raw data (stat): 19415 (pb2sat-v2) R 19414 8378 8377 0 -1 0 228998 0 0 0 9542 458 0 0 25 0 1 0 914320867 652181504 140635 4294967295 134512640 135730672 3221224576 3221128928 134742871 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 159224 140635 301 301 0 158923 0
vsize: 0

Child status: 1
Real time (s): 109.506
CPU time (s): 109.507
CPU user time (s): 104.523
CPU system time (s): 4.98424
CPU usage (%): 100.001
Max. virtual memory (Kb): 636896
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####