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/plato.asu.edu/pub/milp/normalized-mps-v2-20-10-nug08.opb
MD5SUMc527241c4d9537dec2ef265de58c54af
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 107
Optimality of the best value was proved NO
Number of terms in the objective function 20160
Biggest coefficient in the objective function 20971520
Number of bits for the biggest coefficient in the objective function 25
Sum of the numbers in the objective function 9042910800
Number of bits of the sum of numbers in the objective function 34
Biggest number in a constraint 20971520
Number of bits of the biggest number in a constraint 25
Biggest sum of numbers in a constraint 9042910800
Number of bits of the biggest sum of numbers34
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark922.173
Number of variables32640
Total number of constraints912
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 constraints912
Minimum length of a constraint160
Maximum length of a constraint160

Trace number 35358 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc13 THE 2005-05-28 12:59:33 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24665 boxname=wulflinc13 idbench=1137 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  c527241c4d9537dec2ef265de58c54af  /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-nug08.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc13/normalized-mps-v2-20-10-nug08.opb
IDLAUNCH: 24665
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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		: 451.242
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:        701540 kB
Buffers:         36184 kB
Cached:         275796 kB
SwapCached:        548 kB
Active:          30588 kB
Inactive:       283448 kB
HighTotal:      131008 kB
HighFree:        13608 kB
LowTotal:       903652 kB
LowFree:        687932 kB
SwapTotal:     2097136 kB
SwapFree:      2095648 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5140 kB
Slab:            13464 kB
Committed_AS:    63592 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-28 13:01:26 (client local time) WITH STATUS 1 IN 112.5 SECONDS
stats: 24665 7 112.5 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 0.98 0.91 1/54 7480
Raw data (stat): 7480 (runsolver) R 7479 1269 1268 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 806776029 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+10.0156 s]
Raw data (loadavg): 0.93 0.98 0.91 2/54 7480
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 12009 0 0 0 974 25 0 0 25 0 1 0 806776029 42106880 8055 4294967295 134512640 135726644 3221224576 3213770160 134773416 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 10280 8057 300 300 0 9980 0
vsize: 41120
[startup+20.0331 s]
Raw data (loadavg): 0.94 0.98 0.91 2/54 7480
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 43437 0 0 0 1911 91 0 0 25 0 1 0 806776029 134451200 27367 4294967295 134512640 135726644 3221224576 3213271352 134784091 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 32825 27367 300 300 0 32525 0
vsize: 131300
[startup+30.0753 s]
Raw data (loadavg): 0.95 0.98 0.91 2/54 7480
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 71915 0 0 0 2857 149 0 0 25 0 1 0 806776029 275140608 49319 4294967295 134512640 135726644 3221224576 3213278560 134771723 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 67173 49321 300 300 0 66873 0
vsize: 268692
[startup+40.0848 s]
Raw data (loadavg): 1.04 0.99 0.92 2/54 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 104987 0 0 0 3788 216 0 0 25 0 1 0 806776029 342093824 60355 4294967295 134512640 135726644 3221224576 3214021756 134784054 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 83519 60355 300 300 0 83219 0
vsize: 334076
[startup+50.0901 s]
Raw data (loadavg): 1.03 0.99 0.92 2/54 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 125563 0 0 0 4744 260 0 0 25 0 1 0 806776029 369938432 80688 4294967295 134512640 135726644 3221224576 3214100552 135282351 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 90317 80688 300 300 0 90017 0
vsize: 361268
[startup+60.0901 s]
Raw data (loadavg): 1.03 0.99 0.92 2/54 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 167674 0 0 0 5658 346 0 0 25 0 1 0 806776029 506261504 103204 4294967295 134512640 135726644 3221224576 3214192880 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 123599 103204 300 300 0 123299 0
vsize: 494396
[startup+70.0894 s]
Raw data (loadavg): 1.02 0.99 0.92 2/54 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 202457 0 0 0 6585 420 0 0 25 0 1 0 806776029 640479232 113229 4294967295 134512640 135726644 3221224576 3213403280 134782666 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 156367 113229 300 300 0 156067 0
vsize: 625468
[startup+80.0901 s]
Raw data (loadavg): 1.02 0.99 0.92 2/54 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 218441 0 0 0 7554 451 0 0 25 0 1 0 806776029 648994816 128970 4294967295 134512640 135726644 3221224576 3213825280 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 158446 128970 300 300 0 158146 0
vsize: 633784
[startup+90.0899 s]
Raw data (loadavg): 1.01 0.99 0.92 2/54 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 239118 0 0 0 8515 491 0 0 25 0 1 0 806776029 678326272 149410 4294967295 134512640 135726644 3221224576 3214598880 134782642 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 165607 149412 300 300 0 165307 0
vsize: 662428
[startup+100.09 s]
Raw data (loadavg): 1.01 0.99 0.92 2/54 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 255761 0 0 0 9481 525 0 0 25 0 1 0 806776029 752447488 165862 4294967295 134512640 135726644 3221224576 3213906456 135282351 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 183703 165863 300 300 0 183403 0
vsize: 734812
[startup+110.092 s]
Raw data (loadavg): 1.01 0.99 0.92 2/54 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 267516 0 0 0 10455 550 0 0 25 0 1 0 806776029 769458176 177404 4294967295 134512640 135726644 3221224576 3221222992 135280446 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 187856 177404 300 300 0 187556 0
vsize: 751424
[startup+112.532 s]
Raw data (loadavg): 1.01 0.99 0.92 1/53 7533
Raw data (stat): 7480 (pb2sat) R 7479 1269 1268 0 -1 0 267516 0 0 0 10455 550 0 0 25 0 1 0 806776029 769458176 177404 4294967295 134512640 135726644 3221224576 3221222992 135280446 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 187856 177404 300 300 0 187556 0
vsize: 0

Child status: 1
Real time (s): 112.532
CPU time (s): 112.5
CPU user time (s): 106.631
CPU system time (s): 5.86911
CPU usage (%): 99.9715
Max. virtual memory (Kb): 751424
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####