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/miplib3/normalized-mps-v2-20-10-dano3mip.opb
MD5SUMec262e52901896bc3a54080dbb9d2278
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 benchmark15.2427
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 21327 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc28 THE 2005-04-21 23:44:05 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=13266 boxname=wulflinc28 idbench=1021 idsolver=6 numberseed=0
MD5SUM SOLVER: 2225cba0d9b2c30e235f6cafc823d7ac  /oldhome/oroussel/solvers/PBS4
MD5SUM BENCH:  ec262e52901896bc3a54080dbb9d2278  /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-dano3mip.opb
REAL COMMAND:  PBS4 /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-dano3mip.opb
IDLAUNCH: 13266
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.077
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		: 451.077
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:        524680 kB
Buffers:         32152 kB
Cached:         451632 kB
SwapCached:        104 kB
Active:         147200 kB
Inactive:       338952 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        524428 kB
SwapTotal:     2097640 kB
SwapFree:      2097068 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           6056 kB
Slab:            18188 kB
Committed_AS:    63596 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-04-21 23:45:11 (client local time) WITH STATUS 20 IN 63.8923 SECONDS
stats: 13266 7 63.8923 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c PBS v4 by Bashar Al-Rawi & Fadi Aloul
c Solving /oldhome/oroussel/tmp/wulflinc28/normalized-mps-v2-20-10-dano3mip.opb ......
s UNSATISFIABLE
c Done, CPU Time=1.27181
#### 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): 0.96 0.98 0.93 2/54 2524
Raw data (stat): 2524 (runsolver) R 2523 10614 10613 0 -1 64 4 0 0 0 0 0 0 0 19 0 1 0 549140487 1052672 99 4294967295 134512640 135381576 3221224528 3221219776 135158418 0 2147483391 7 90112 0 0 0 17 0 0 0
Raw data (statm): 257 99 215 215 0 42 0
vsize: 1028
[startup+9.99994 s]
Raw data (loadavg): 0.97 0.98 0.93 2/54 2524
Raw data (stat): 2524 (PBS4) R 2523 10614 10613 0 -1 0 15579 0 0 0 963 36 0 0 25 0 1 0 549140487 63164416 15091 4294967295 134512640 135450300 3221224624 3221157344 134523738 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 15421 15091 231 231 0 15190 0
vsize: 61684
[startup+20.0042 s]
Raw data (loadavg): 0.97 0.98 0.93 2/54 2524
Raw data (stat): 2524 (PBS4) R 2523 10614 10613 0 -1 0 17927 0 0 0 1957 42 0 0 25 0 1 0 549140487 72839168 17439 4294967295 134512640 135450300 3221224624 3221157424 134599188 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 17783 17439 231 231 0 17552 0
vsize: 71132
[startup+30.0045 s]
Raw data (loadavg): 0.97 0.98 0.93 2/54 2524
Raw data (stat): 2524 (PBS4) R 2523 10614 10613 0 -1 0 19147 0 0 0 2952 47 0 0 25 0 1 0 549140487 77975552 18659 4294967295 134512640 135450300 3221224624 3221157480 134515757 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 19037 18659 231 231 0 18806 0
vsize: 76148
[startup+40.0052 s]
Raw data (loadavg): 0.98 0.98 0.93 2/54 2524
Raw data (stat): 2524 (PBS4) R 2523 10614 10613 0 -1 0 22705 0 0 0 3944 56 0 0 25 0 1 0 549140487 92454912 22217 4294967295 134512640 135450300 3221224624 3221157424 134600250 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 22572 22217 231 231 0 22341 0
vsize: 90288
[startup+50.0052 s]
Raw data (loadavg): 0.98 0.98 0.93 2/54 2524
Raw data (stat): 2524 (PBS4) R 2523 10614 10613 0 -1 0 24369 0 0 0 4937 63 0 0 25 0 1 0 549140487 99155968 23881 4294967295 134512640 135450300 3221224624 3221157424 134598577 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 24208 23881 231 231 0 23977 0
vsize: 96832
[startup+60.0055 s]
Raw data (loadavg): 0.98 0.98 0.93 2/54 2524
Raw data (stat): 2524 (PBS4) R 2523 10614 10613 0 -1 0 28312 0 0 0 5925 74 0 0 25 0 1 0 549140487 115339264 27824 4294967295 134512640 135450300 3221224624 3221157220 134524062 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 28159 27824 231 231 0 27928 0
vsize: 112636
[startup+63.8911 s]
Raw data (loadavg): 0.98 0.98 0.93 1/53 2524
Raw data (stat): 2524 (PBS4) R 2523 10614 10613 0 -1 0 28312 0 0 0 5925 74 0 0 25 0 1 0 549140487 115339264 27824 4294967295 134512640 135450300 3221224624 3221157220 134524062 0 0 7 0 0 0 0 17 0 0 0
Raw data (statm): 28159 27824 231 231 0 27928 0
vsize: 0

Child status: 20
Real time (s): 63.8907
CPU time (s): 63.8923
CPU user time (s): 62.8964
CPU system time (s): 0.995848
CPU usage (%): 100.002
Max. virtual memory (Kb): 112636
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####