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/MIPLIB/miplib/normalized-mps-v2-20-10-pipex.opb
MD5SUMb9c1029cc1d97a8d60e984f96f5d3267
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 788263
Optimality of the best value was proved NO
Number of terms in the objective function 48
Biggest coefficient in the objective function 107865
Number of bits for the biggest coefficient in the objective function 17
Sum of the numbers in the objective function 2514082
Number of bits of the sum of numbers in the objective function 22
Biggest number in a constraint 107865
Number of bits of the biggest number in a constraint 17
Biggest sum of numbers in a constraint 2514082
Number of bits of the biggest sum of numbers22
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.02184
Number of variables48
Total number of constraints73
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)64
Number of constraints which are nor clauses,nor cardinality constraints9
Minimum length of a constraint1
Maximum length of a constraint16

Trace number 42419 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc6 THE 2005-06-16 07:11:18 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25639 boxname=wulflinc6 idbench=939 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  b9c1029cc1d97a8d60e984f96f5d3267  /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-pipex.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc6/normalized-mps-v2-20-10-pipex.opb
IDLAUNCH: 25639
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.042
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		: 451.042
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:        737036 kB
Buffers:         33372 kB
Cached:         241816 kB
SwapCached:       1028 kB
Active:          32736 kB
Inactive:       244612 kB
HighTotal:      131008 kB
HighFree:        13664 kB
LowTotal:       903652 kB
LowFree:        723372 kB
SwapTotal:     2097136 kB
SwapFree:      2095200 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5092 kB
Slab:            14552 kB
Committed_AS:    63812 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 07:13:17 (client local time) WITH STATUS 1 IN 119.357 SECONDS
stats: 25639 7 119.357 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
c got solution with objective value: 828241
c small objective detected

	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
Raw data (loadavg): 0.90 0.95 0.90 2/54 16081
Raw data (stat): 16081 (runsolver) R 16080 25568 25567 0 -1 64 2 0 0 0 0 0 0 0 19 0 1 0 968860575 884736 93 4294967295 134512640 135332820 3221224464 3221219504 134917783 0 0 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 93 205 205 0 11 0
vsize: 864
Current StackSize limit: 67108864 bytes
[startup+9.99998 s]
Raw data (loadavg): 0.92 0.95 0.90 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 28663 0 0 0 939 59 0 0 25 0 1 0 968860575 88940544 17599 4294967295 134512640 135730672 3221224576 3221197600 134786246 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 21714 17599 301 301 0 21413 0
vsize: 86856
[startup+20.0004 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 56307 0 0 0 1885 114 0 0 25 0 1 0 968860575 174604288 34024 4294967295 134512640 135730672 3221224576 3221199968 134770712 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 42628 34024 301 301 0 42327 0
vsize: 170512
[startup+30.0006 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 88603 0 0 0 2826 173 0 0 25 0 1 0 968860575 343887872 56400 4294967295 134512640 135730672 3221224576 3221197776 134788521 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 83957 56405 301 301 0 83656 0
vsize: 335828
[startup+40.0007 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 109568 0 0 0 3782 218 0 0 25 0 1 0 968860575 342994944 64870 4294967295 134512640 135730672 3221224576 3221199968 134770873 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 83739 64870 301 301 0 83438 0
vsize: 334956
[startup+50.0009 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 133325 0 0 0 4745 255 0 0 25 0 1 0 968860575 523214848 88234 4294967295 134512640 135730672 3221224576 3221200992 134775425 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 127738 88236 301 301 0 127437 0
vsize: 510952
[startup+60.001 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 163844 0 0 0 5688 313 0 0 25 0 1 0 968860575 488415232 99179 4294967295 134512640 135730672 3221224576 3221197624 134607985 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 119242 99179 301 301 0 118941 0
vsize: 476968
[startup+70.0008 s]
Raw data (loadavg): 0.97 0.95 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 198407 0 0 0 6622 379 0 0 25 0 1 0 968860575 589078528 108980 4294967295 134512640 135730672 3221224576 3221203680 134546351 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 143818 108980 301 301 0 143517 0
vsize: 575272
[startup+80.0013 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 212368 0 0 0 7595 406 0 0 25 0 1 0 968860575 639582208 122760 4294967295 134512640 135730672 3221224576 3221199592 135285983 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 156148 122761 301 301 0 155847 0
vsize: 624592
[startup+90.0015 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 230472 0 0 0 8563 438 0 0 25 0 1 0 968860575 667582464 140657 4294967295 134512640 135730672 3221224576 3221203216 134770772 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 162984 140657 301 301 0 162683 0
vsize: 651936
[startup+100.003 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 248186 0 0 0 9533 470 0 0 25 0 1 0 968860575 694214656 158168 4294967295 134512640 135730672 3221224576 3221203740 135291064 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 169486 158169 301 301 0 169185 0
vsize: 677944
[startup+110.004 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 259596 0 0 0 10512 491 0 0 25 0 1 0 968860575 762368000 169446 4294967295 134512640 135730672 3221224576 3221222608 135282716 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 186125 169446 301 301 0 185824 0
vsize: 744500
[startup+119.335 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 16081
Raw data (stat): 16081 (pb2sat-v2) R 16080 25568 25567 0 -1 0 259596 0 0 0 10512 491 0 0 25 0 1 0 968860575 762368000 169446 4294967295 134512640 135730672 3221224576 3221222608 135282716 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 186125 169446 301 301 0 185824 0
vsize: 0

Child status: 1
Real time (s): 119.334
CPU time (s): 119.357
CPU user time (s): 114.094
CPU system time (s): 5.2632
CPU usage (%): 100.019
Max. virtual memory (Kb): 744500
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####