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-air02.opb
MD5SUM75acdcffdd43b3d3a30d0459a6bffe45
Bench Categoryoptimization, medium integers (OPTMEDINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function 6106
Optimality of the best value was proved NO
Number of terms in the objective function 6774
Biggest coefficient in the objective function 4804
Number of bits for the biggest coefficient in the objective function 13
Sum of the numbers in the objective function 6613094
Number of bits of the sum of numbers in the objective function 23
Biggest number in a constraint 4804
Number of bits of the biggest number in a constraint 13
Biggest sum of numbers in a constraint 6613094
Number of bits of the biggest sum of numbers23
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark1190.1
Number of variables6774
Total number of constraints6824
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)6824
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint1
Maximum length of a constraint3729

Trace number 42377 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc5 THE 2005-06-16 06:13:37 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=25595 boxname=wulflinc5 idbench=895 idsolver=18 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  75acdcffdd43b3d3a30d0459a6bffe45  /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-air02.opb
REAL COMMAND:  pb2sat-v2 /oldhome/oroussel/tmp/wulflinc5/normalized-mps-v2-20-10-air02.opb
IDLAUNCH: 25595
/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:        720504 kB
Buffers:         34728 kB
Cached:         256224 kB
SwapCached:        700 kB
Active:          74596 kB
Inactive:       218492 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        720252 kB
SwapTotal:     2097136 kB
SwapFree:      2095508 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5156 kB
Slab:            15320 kB
Committed_AS:    63716 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-16 06:15:28 (client local time) WITH STATUS 1 IN 110.536 SECONDS
stats: 25595 7 110.536 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: 15142
c big objective detected
c trying from 0 to 511

	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): 0.90 0.95 0.90 1/54 9933
Raw data (stat): 9933 (runsolver) R 9932 7266 7265 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 968515484 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+9.99978 s]
Raw data (loadavg): 0.92 0.95 0.90 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 13318 0 0 0 969 30 0 0 25 0 1 0 968515484 41218048 7892 4294967295 134512640 135730672 3221224576 3221221700 134577200 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 10063 7892 301 301 0 9762 0
vsize: 40252
[startup+20.0006 s]
Raw data (loadavg): 0.93 0.95 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 39807 0 0 0 1910 89 0 0 25 0 1 0 968515484 120057856 23885 4294967295 134512640 135730672 3221224576 3218140832 134770759 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 29311 23885 301 301 0 29010 0
vsize: 117244
[startup+30.0018 s]
Raw data (loadavg): 0.94 0.95 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 75071 0 0 0 2842 157 0 0 25 0 1 0 968515484 274128896 52279 4294967295 134512640 135730672 3221224576 3220495696 135104808 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 66926 52279 301 301 0 66625 0
vsize: 267704
[startup+40.0022 s]
Raw data (loadavg): 0.95 0.95 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 99441 0 0 0 3786 212 0 0 25 0 1 0 968515484 296374272 55432 4294967295 134512640 135730672 3221224576 3219554576 134786142 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 72357 55432 301 301 0 72056 0
vsize: 289428
[startup+50.0029 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 117364 0 0 0 4745 253 0 0 25 0 1 0 968515484 358313984 73117 4294967295 134512640 135730672 3221224576 3220845120 134607963 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 87479 73117 301 301 0 87178 0
vsize: 349916
[startup+60.0095 s]
Raw data (loadavg): 0.96 0.95 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 153834 0 0 0 5676 323 0 0 25 0 1 0 968515484 484102144 91028 4294967295 134512640 135730672 3221224576 3218199744 135282725 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 118189 91028 301 301 0 117888 0
vsize: 472756
[startup+70.0105 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 170901 0 0 0 6641 359 0 0 25 0 1 0 968515484 685432832 107841 4294967295 134512640 135730672 3221224576 3220005776 134788521 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 167342 107841 301 301 0 167041 0
vsize: 669368
[startup+80.0111 s]
Raw data (loadavg): 0.97 0.96 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 205644 0 0 0 7567 432 0 0 25 0 1 0 968515484 604094464 117785 4294967295 134512640 135730672 3221224576 3221158768 134610081 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 147484 117785 301 301 0 147183 0
vsize: 589936
[startup+90.0122 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 221738 0 0 0 8529 471 0 0 25 0 1 0 968515484 662654976 133667 4294967295 134512640 135730672 3221224576 3220827344 134786278 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 161781 133667 301 301 0 161480 0
vsize: 647124
[startup+100.013 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 240546 0 0 0 9486 514 0 0 25 0 1 0 968515484 693202944 152234 4294967295 134512640 135730672 3221224576 3219432224 134608814 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 169239 152235 301 301 0 168938 0
vsize: 676956
[startup+110.012 s]
Raw data (loadavg): 0.98 0.96 0.91 2/54 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 242666 0 0 0 10470 530 0 0 25 0 1 0 968515484 386207744 93860 4294967295 134512640 135730672 3221224576 3221222960 134782625 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 94289 93860 301 301 0 93988 0
vsize: 377156
[startup+110.547 s]
Raw data (loadavg): 0.98 0.96 0.91 1/53 9933
Raw data (stat): 9933 (pb2sat-v2) R 9932 7266 7265 0 -1 0 242666 0 0 0 10470 530 0 0 25 0 1 0 968515484 386207744 93860 4294967295 134512640 135730672 3221224576 3221222960 134782625 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 94289 93860 301 301 0 93988 0
vsize: 0

Child status: 1
Real time (s): 110.547
CPU time (s): 110.536
CPU user time (s): 105.037
CPU system time (s): 5.49916
CPU usage (%): 99.9905
Max. virtual memory (Kb): 676956
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####