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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-pilot4.opb
MD5SUM51b37b22b0e13f30b25801aa060ca6d7
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 120
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 4294967292
Number of bits of the sum of numbers in the objective function 32
Biggest number in a constraint -3498116692108640256
Number of bits of the biggest number in a constraint 64
Biggest sum of numbers in a constraint 99417465468392882176
Number of bits of the biggest sum of numbers67
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.988849
Number of variables26494
Total number of constraints657
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 constraints657
Minimum length of a constraint10
Maximum length of a constraint1427

Trace number 42332 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-06-16 05:43:40 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25550 boxname=wulflinc5 idbench=850 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  51b37b22b0e13f30b25801aa060ca6d7  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-pilot4.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-pilot4.opb
IDLAUNCH: 25550
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.007
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		: 451.007
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:        748200 kB
Buffers:         34632 kB
Cached:         228508 kB
SwapCached:        700 kB
Active:          76232 kB
Inactive:       189008 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        747948 kB
SwapTotal:     2097136 kB
SwapFree:      2095508 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5156 kB
Slab:            15416 kB
Committed_AS:    63716 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 05:45:22 (client local time) WITH STATUS 1 IN 101.904 SECONDS
stats: 25550 7 101.904 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 1/54 9319
Raw data (stat): 9319 (runsolver) R 9318 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 968335766 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+10.0007 s]
Raw data (loadavg): 0.92 0.95 0.90 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 29014 0 0 0 940 59 0 0 25 0 1 0 968335766 89919488 17888 4294967295 134512640 135730672 3221224576 3220990608 134770106 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 21953 17888 301 301 0 21652 0
vsize: 87812
[startup+20.0014 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 57768 0 0 0 1883 116 0 0 25 0 1 0 968335766 177594368 35251 4294967295 134512640 135730672 3221224576 3220990256 134770712 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 43358 35252 301 301 0 43057 0
vsize: 173432
[startup+30.0084 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 95645 0 0 0 2813 186 0 0 25 0 1 0 968335766 340545536 62503 4294967295 134512640 135730672 3221224576 3220992704 134788521 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 83141 62508 301 301 0 82840 0
vsize: 332564
[startup+40.0089 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 114507 0 0 0 3778 222 0 0 25 0 1 0 968335766 351268864 68829 4294967295 134512640 135730672 3221224576 3220992992 134786278 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 85759 68830 301 301 0 85458 0
vsize: 343036
[startup+50.0087 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 154723 0 0 0 4698 302 0 0 25 0 1 0 968335766 478314496 87895 4294967295 134512640 135730672 3221224576 3220992540 134608006 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 116776 87896 301 301 0 116475 0
vsize: 467104
[startup+60.0098 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 172914 0 0 0 5664 337 0 0 25 0 1 0 968335766 679645184 105833 4294967295 134512640 135730672 3221224576 3220993632 134788521 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 165929 105837 301 301 0 165628 0
vsize: 663716
[startup+70.0102 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 208449 0 0 0 6593 407 0 0 25 0 1 0 968335766 600739840 116562 4294967295 134512640 135730672 3221224576 3220994252 135291075 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 146665 116562 301 301 0 146364 0
vsize: 586660
[startup+80.0099 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 225601 0 0 0 7560 441 0 0 25 0 1 0 968335766 660246528 133498 4294967295 134512640 135730672 3221224576 3220991564 135291172 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 161193 133499 301 301 0 160892 0
vsize: 644772
[startup+90.01 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 245991 0 0 0 8523 478 0 0 25 0 1 0 968335766 692862976 153309 4294967295 134512640 135730672 3221224576 3220991264 134608814 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 169156 153309 301 301 0 168855 0
vsize: 676624
[startup+100.01 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 249347 0 0 0 9503 497 0 0 25 0 1 0 968335766 379265024 92121 4294967295 134512640 135730672 3221224576 3221222832 135282219 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 92594 92121 301 301 0 92293 0
vsize: 370376
[startup+101.903 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 9319
Raw data (stat): 9319 (pb2sat-v2) R 9318 7266 7265 0 -1 0 249347 0 0 0 9503 497 0 0 25 0 1 0 968335766 379265024 92121 4294967295 134512640 135730672 3221224576 3221222832 135282219 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 92594 92121 301 301 0 92293 0
vsize: 0

Child status: 1
Real time (s): 101.902
CPU time (s): 101.904
CPU user time (s): 96.7273
CPU system time (s): 5.17621
CPU usage (%): 100.001
Max. virtual memory (Kb): 676624
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####