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/miplib2003/normalized-mps-v2-20-10-dano3mip.opb
MD5SUM07b8540d5ec185750fee03977f8da675
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 30
Biggest coefficient in the objective function 536870912
Number of bits for the biggest coefficient in the objective function 30
Sum of the numbers in the objective function 1073741823
Number of bits of the sum of numbers in the objective function 30
Biggest number in a constraint 67108864000
Number of bits of the biggest number in a constraint 36
Biggest sum of numbers in a constraint 569083166190
Number of bits of the biggest sum of numbers40
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark17.1024
Number of variables399966
Total number of constraints3778
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)600
Number of constraints which are nor clauses,nor cardinality constraints3178
Minimum length of a constraint1
Maximum length of a constraint15900

Trace number 21896 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc31 THE 2005-04-22 01:41:12 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=12499 boxname=wulflinc31 idbench=962 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  07b8540d5ec185750fee03977f8da675  /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-dano3mip.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-dano3mip.opb
IDLAUNCH: 12499
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.153
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		: 451.153
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:        623384 kB
Buffers:         25408 kB
Cached:         360728 kB
SwapCached:        580 kB
Active:         149552 kB
Inactive:       238516 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        623132 kB
SwapTotal:     2097892 kB
SwapFree:      2096356 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5024 kB
Slab:            17496 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-22 01:42:34 (client local time) WITH STATUS 20 IN 78.758 SECONDS
stats: 12499 7 78.758 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc31/normalized-mps-v2-20-10-dano3mip.opb ......
s UNSATISFIABLE
c Done, CPU Time=1.3368
#### 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
Raw data (loadavg): 0.75 0.89 0.88 1/54 8503
Raw data (stat): 8503 (runsolver) D 8502 23176 23175 0 -1 64 4 0 0 0 0 0 0 0 18 0 1 0 549824388 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 3225161850 0 0 17 1 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+10.0002 s]
Raw data (loadavg): 0.78 0.89 0.88 2/54 8503
Raw data (stat): 8503 (PBS4) R 8502 23176 23175 0 -1 0 16105 0 0 0 949 38 0 0 25 0 1 0 549824388 65687552 15617 4294967295 134512640 135450300 3221224624 3221157424 134598596 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 16037 15617 231 231 0 15806 0
vsize: 64148
[startup+20.0071 s]
Raw data (loadavg): 0.82 0.89 0.89 2/54 8503
Raw data (stat): 8503 (PBS4) R 8502 23176 23175 0 -1 0 18070 0 0 0 1943 45 0 0 25 0 1 0 549824388 74141696 17582 4294967295 134512640 135450300 3221224624 3221157424 134599693 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 18101 17582 231 231 0 17870 0
vsize: 72404
[startup+30.0075 s]
Raw data (loadavg): 0.84 0.90 0.89 2/54 8503
Raw data (stat): 8503 (PBS4) R 8502 23176 23175 0 -1 0 21216 0 0 0 2934 54 0 0 25 0 1 0 549824388 86388736 20728 4294967295 134512640 135450300 3221224624 3221157424 134599687 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 21091 20728 231 231 0 20860 0
vsize: 84364
[startup+40.0079 s]
Raw data (loadavg): 0.87 0.90 0.89 2/54 8503
Raw data (stat): 8503 (PBS4) R 8502 23176 23175 0 -1 0 21490 0 0 0 3931 57 0 0 25 0 1 0 549824388 87777280 21002 4294967295 134512640 135450300 3221224624 3221157424 134598684 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 21430 21002 231 231 0 21199 0
vsize: 85720
[startup+50.0088 s]
Raw data (loadavg): 0.89 0.90 0.89 2/54 8503
Raw data (stat): 8503 (PBS4) R 8502 23176 23175 0 -1 0 25390 0 0 0 4923 65 0 0 25 0 1 0 549824388 104497152 24902 4294967295 134512640 135450300 3221224624 3221157424 134599191 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 25512 24902 231 231 0 25281 0
vsize: 102048
[startup+60.0092 s]
Raw data (loadavg): 0.90 0.90 0.89 2/54 8503
Raw data (stat): 8503 (PBS4) R 8502 23176 23175 0 -1 0 25659 0 0 0 5919 70 0 0 25 0 1 0 549824388 104497152 25171 4294967295 134512640 135450300 3221224624 3221157424 134598599 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 25512 25171 231 231 0 25281 0
vsize: 102048
[startup+70.0097 s]
Raw data (loadavg): 0.92 0.91 0.89 2/54 8503
Raw data (stat): 8503 (PBS4) R 8502 23176 23175 0 -1 0 28350 0 0 0 6911 77 0 0 25 0 1 0 549824388 115482624 27862 4294967295 134512640 135450300 3221224624 3221157424 134599194 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 28194 27862 231 231 0 27963 0
vsize: 112776
[startup+78.8757 s]
Raw data (loadavg): 0.93 0.91 0.89 1/53 8503
Raw data (stat): 8503 (PBS4) R 8502 23176 23175 0 -1 0 28350 0 0 0 6911 77 0 0 25 0 1 0 549824388 115482624 27862 4294967295 134512640 135450300 3221224624 3221157424 134599194 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 28194 27862 231 231 0 27963 0
vsize: 0

Child status: 20
Real time (s): 78.8753
CPU time (s): 78.758
CPU user time (s): 77.7062
CPU system time (s): 1.05184
CPU usage (%): 99.8513
Max. virtual memory (Kb): 112776
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####