PB'05 competition: run trace

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:

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.
SOLVER DATA
This is the output of the solver (stdout and stderr).
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.
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

Name	normalized-opb/mps-v2-13-7/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-sc50b.opb
MD5SUM	36d973d6ac0a73f611c4998ee3e157d3
Bench Category	optimization, medium integers (OPTMEDINT)
Has Objective Function	YES
Satisfiable	YES
(Un)Satisfiability was proved	YES
Best value of the objective function	0
Optimality of the best value was proved	NO
Number of terms in the objective function	20
Biggest coefficient in the objective function	524288
Number of bits for the biggest coefficient in the objective function	20
Sum of the numbers in the objective function	1048575
Number of bits of the sum of numbers in the objective function	20
Biggest number in a constraint	5767168
Number of bits of the biggest number in a constraint	23
Biggest sum of numbers in a constraint	22020075
Number of bits of the biggest sum of numbers	25
Best result obtained on this benchmark	SAT
Best CPU time to get the best result obtained on this benchmark	2.84657
Number of variables	960
Total number of constraints	48
Number of constraints which are clauses	0
Number of constraints which are cardinality constraints (but not clauses)	0
Number of constraints which are nor clauses,nor cardinality constraints	48
Minimum length of a constraint	40
Maximum length of a constraint	80

Trace number 35470

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc20 THE 2005-05-28 13:16:35 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24772 boxname=wulflinc20 idbench=1244 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  36d973d6ac0a73f611c4998ee3e157d3  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-13-7-sc50b.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-13-7-sc50b.opb
IDLAUNCH: 24772
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.215
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	: 3
cpu MHz		: 451.215
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        725628 kB
Buffers:         32612 kB
Cached:         253296 kB
SwapCached:        644 kB
Active:          20992 kB
Inactive:       266952 kB
HighTotal:      131008 kB
HighFree:         2184 kB
LowTotal:       903652 kB
LowFree:        723444 kB
SwapTotal:     2097892 kB
SwapFree:      2096312 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5104 kB
Slab:            15564 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-28 13:18:18 (client local time) WITH STATUS 20 IN 102.443 SECONDS
stats: 24772 7 102.443 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c CONFLICT during preprocess 
c [startup+0.913834 s]  setting bit 19 to 0
c CONFLICT during preprocess 
c [startup+0.975197 s]  setting bit 18 to 0
c CONFLICT during preprocess 
c [startup+1.0366 s]  setting bit 17 to 0
c CONFLICT during preprocess 
c [startup+1.09886 s]  setting bit 16 to 0
c CONFLICT during preprocess 
c [startup+1.16137 s]  setting bit 15 to 0
c CONFLICT during preprocess 
c [startup+1.22791 s]  setting bit 14 to 0

Decision: 2711/21119	Time: 1.9647/86400
Decision: 2784/21119	Time: 3.9254/86400
Decision: 3225/21119	Time: 6.91495/86400
Decision: 7775/21119	Time: 22.0556/86400
Decision: 8147/21119	Time: 24.9092/86400
Decision: 8147/21119	Time: 26.366/86400
Decision: 8465/21119	Time: 32.3251/86400c [startup+35.1966 s]  setting bit 13 to 0

Decision: 3619/21119	Time: 2.68159/86400
Decision: 3771/21119	Time: 5.29219/86400
Decision: 3771/21119	Time: 7.79681/86400c [startup+47.6458 s]  setting bit 12 to 0

Decision: 3696/21119	Time: 4.6253/86400
Decision: 3696/21119	Time: 7.15491/86400
Decision: 3698/21119	Time: 10.1964/86400c [startup+62.2569 s]  setting bit 11 to 0

Decision: 3699/21119	Time: 6.77997/86400c [startup+70.2609 s]  setting bit 10 to 0

Decision: 3701/21119	Time: 3.9254/86400c [startup+78.638 s]  setting bit 9 to 0

Decision: 3700/21119	Time: 3.66544/86400c [startup+85.4267 s]  setting bit 8 to 0
c [startup+90.7195 s]  setting bit 7 to 0
c [startup+94.0927 s]  setting bit 6 to 0
c [startup+96.8899 s]  setting bit 5 to 0
c [startup+99.085 s]  setting bit 4 to 0
c [startup+100.154 s]  setting bit 3 to 0
c [startup+100.959 s]  setting bit 2 to 0
c [startup+102.116 s]  setting bit 1 to 0
c [startup+102.396 s]  setting bit 0 to 0
s UNSATISFIABLE
#### 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): 0.83 0.91 0.90 2/54 11937
Raw data (stat): 11937 (runsolver) R 11936 25399 25398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 865092668 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+10.0009 s]
Raw data (loadavg): 0.85 0.92 0.90 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 3552 0 0 0 991 7 0 0 25 0 1 0 865092668 11354112 1813 4294967295 134512640 135726644 3221224576 3221223168 134744136 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 2772 1813 300 300 0 2472 0
vsize: 11088
[startup+20.0012 s]
Raw data (loadavg): 0.88 0.92 0.90 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 3843 0 0 0 1989 9 0 0 25 0 1 0 865092668 12042240 2104 4294967295 134512640 135726644 3221224576 3221223056 134729188 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 2940 2104 300 300 0 2640 0
vsize: 11760
[startup+30.0026 s]
Raw data (loadavg): 0.89 0.92 0.90 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 4239 0 0 0 2985 13 0 0 25 0 1 0 865092668 14729216 2374 4294967295 134512640 135726644 3221224576 3221223072 134744314 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 3596 2374 300 300 0 3296 0
vsize: 14384
[startup+40.003 s]
Raw data (loadavg): 0.91 0.92 0.90 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 4719 0 0 0 3983 15 0 0 25 0 1 0 865092668 15138816 2728 4294967295 134512640 135726644 3221224576 3221223072 134743889 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 3696 2728 300 300 0 3396 0
vsize: 14784
[startup+50.003 s]
Raw data (loadavg): 0.92 0.92 0.90 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 4957 0 0 0 4981 17 0 0 25 0 1 0 865092668 15597568 2840 4294967295 134512640 135726644 3221224576 3221223072 134744063 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 3808 2840 300 300 0 3508 0
vsize: 15232
[startup+60.0032 s]
Raw data (loadavg): 0.93 0.93 0.90 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 5210 0 0 0 5980 18 0 0 25 0 1 0 865092668 15761408 2967 4294967295 134512640 135726644 3221224576 3221223168 134760075 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 3848 2967 300 300 0 3548 0
vsize: 15392
[startup+70.0034 s]
Raw data (loadavg): 0.94 0.93 0.91 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 5451 0 0 0 6979 19 0 0 25 0 1 0 865092668 15896576 3124 4294967295 134512640 135726644 3221224576 3221223072 134744163 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 3881 3124 300 300 0 3581 0
vsize: 15524
[startup+80.004 s]
Raw data (loadavg): 0.95 0.93 0.91 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 5749 0 0 0 7978 20 0 0 25 0 1 0 865092668 20234240 3296 4294967295 134512640 135726644 3221224576 3221223196 135337969 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 4940 3296 300 300 0 4640 0
vsize: 19760
[startup+90.0034 s]
Raw data (loadavg): 0.96 0.93 0.91 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 5932 0 0 0 8977 21 0 0 25 0 1 0 865092668 20365312 3395 4294967295 134512640 135726644 3221224576 3221223264 134744969 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 4972 3395 300 300 0 4672 0
vsize: 19888
[startup+100.004 s]
Raw data (loadavg): 0.96 0.93 0.91 2/54 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 6336 0 0 0 9975 23 0 0 25 0 1 0 865092668 20500480 3631 4294967295 134512640 135726644 3221224576 3221223072 134744163 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 5005 3631 300 300 0 4705 0
vsize: 20020
[startup+102.461 s]
Raw data (loadavg): 0.96 0.93 0.91 1/53 11937
Raw data (stat): 11937 (pb2sat) R 11936 25399 25398 0 -1 0 6336 0 0 0 9975 23 0 0 25 0 1 0 865092668 20500480 3631 4294967295 134512640 135726644 3221224576 3221223072 134744163 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 5005 3631 300 300 0 4705 0
vsize: 0

Child status: 20
Real time (s): 102.461
CPU time (s): 102.443
CPU user time (s): 102.192
CPU system time (s): 0.250961
CPU usage (%): 99.983
Max. virtual memory (Kb): 20020
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####