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-air01.opb
MD5SUM90db1995bd949fc5ac74143a523f3bcf
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 3398
Optimality of the best value was proved NO
Number of terms in the objective function 771
Biggest coefficient in the objective function 3698
Number of bits for the biggest coefficient in the objective function 12
Sum of the numbers in the objective function 1192753
Number of bits of the sum of numbers in the objective function 21
Biggest number in a constraint 3698
Number of bits of the biggest number in a constraint 12
Biggest sum of numbers in a constraint 1192753
Number of bits of the biggest sum of numbers21
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1.03384
Number of variables771
Total number of constraints794
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)794
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint438

Trace number 35117 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-05-28 12:16:20 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24422 boxname=wulflinc5 idbench=894 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  90db1995bd949fc5ac74143a523f3bcf  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-air01.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-air01.opb
IDLAUNCH: 24422
/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:        693900 kB
Buffers:         33876 kB
Cached:         281920 kB
SwapCached:        608 kB
Active:          14960 kB
Inactive:       302912 kB
HighTotal:      131008 kB
HighFree:        58240 kB
LowTotal:       903652 kB
LowFree:        635660 kB
SwapTotal:     2097136 kB
SwapFree:      2095612 kB
Dirty:              32 kB
Writeback:           0 kB
Mapped:           5132 kB
Slab:            17160 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-28 12:18:02 (client local time) WITH STATUS 1 IN 102.015 SECONDS
stats: 24422 7 102.015 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 1/54 18811
Raw data (stat): 18811 (runsolver) D 18810 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 18 0 1 0 806509946 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 3225161850 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.001 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 30079 0 0 0 933 64 0 0 25 0 1 0 806509946 91451392 18921 4294967295 134512640 135726644 3221224592 3220951776 134771472 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 22327 18921 300 300 0 22027 0
vsize: 89308
[startup+20.0011 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 60194 0 0 0 1869 128 0 0 25 0 1 0 806509946 181334016 37790 4294967295 134512640 135726644 3221224592 3220944240 134604379 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 44271 37790 300 300 0 43971 0
vsize: 177084
[startup+30.0019 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 98516 0 0 0 2795 202 0 0 25 0 1 0 806509946 294825984 53897 4294967295 134512640 135726644 3221224592 3221062568 134784091 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 71979 53897 300 300 0 71679 0
vsize: 287916
[startup+40.0019 s]
Raw data (loadavg): 0.95 0.96 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 118522 0 0 0 3753 244 0 0 25 0 1 0 806509946 357445632 73658 4294967295 134512640 135726644 3221224592 3221024416 135101187 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 87267 73659 300 300 0 86967 0
vsize: 349068
[startup+50.0014 s]
Raw data (loadavg): 0.96 0.96 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 158796 0 0 0 4678 319 0 0 25 0 1 0 806509946 489185280 94342 4294967295 134512640 135726644 3221224592 3221046568 134784091 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 119430 94342 300 300 0 119130 0
vsize: 477720
[startup+60.0018 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 194302 0 0 0 5601 396 0 0 25 0 1 0 806509946 589848576 105072 4294967295 134512640 135726644 3221224592 3221007680 134767123 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 144006 105073 300 300 0 143706 0
vsize: 576024
[startup+70.0019 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 207951 0 0 0 6573 425 0 0 25 0 1 0 806509946 632594432 118521 4294967295 134512640 135726644 3221224592 3220959256 135280675 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 154442 118522 300 300 0 154142 0
vsize: 617768
[startup+80.0026 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 229346 0 0 0 7530 468 0 0 25 0 1 0 806509946 664780800 139659 4294967295 134512640 135726644 3221224592 3220978896 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 162300 139659 300 300 0 162000 0
vsize: 649200
[startup+90.0027 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 250105 0 0 0 8489 510 0 0 25 0 1 0 806509946 696025088 160179 4294967295 134512640 135726644 3221224592 3221057680 134766569 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 169928 160179 300 300 0 169628 0
vsize: 679712
[startup+100.002 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 258966 0 0 0 9456 542 0 0 25 0 1 0 806509946 400121856 97261 4294967295 134512640 135726644 3221224592 3221222956 135280404 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 97686 97261 300 300 0 97386 0
vsize: 390744
[startup+102.033 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 18811
Raw data (stat): 18811 (pb2sat) R 18810 7266 7265 0 -1 0 258966 0 0 0 9456 542 0 0 25 0 1 0 806509946 400121856 97261 4294967295 134512640 135726644 3221224592 3221222956 135280404 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 97686 97261 300 300 0 97386 0
vsize: 0

Child status: 1
Real time (s): 102.032
CPU time (s): 102.015
CPU user time (s): 96.3883
CPU system time (s): 5.62714
CPU usage (%): 99.9839
Max. virtual memory (Kb): 679712
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####