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-dano3_4.opb
MD5SUM0fb19246428e886fa1f72b2bd977e0d3
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 134217728000
Number of bits of the biggest number in a constraint 37
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 benchmark15.4766
Number of variables404566
Total number of constraints3778
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)96
Number of constraints which are nor clauses,nor cardinality constraints3682
Minimum length of a constraint1
Maximum length of a constraint15900

Trace number 38914 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc3 THE 2005-06-02 18:53:24 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=26984 boxname=wulflinc3 idbench=1112 idsolver=19 numberseed=0
MD5SUM SOLVER: 259c660e62244fe20bfb2a303545faea  /oldhome/oroussel/solvers/Pueblo-v2
MD5SUM BENCH:  0fb19246428e886fa1f72b2bd977e0d3  /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-dano3_4.opb
REAL COMMAND:  Pueblo-v2 /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-dano3_4.opb
IDLAUNCH: 26984
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.190
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.190
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:        504888 kB
Buffers:         14896 kB
Cached:         491940 kB
SwapCached:        240 kB
Active:          64524 kB
Inactive:       444788 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        504636 kB
SwapTotal:     2097136 kB
SwapFree:      2096352 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           6212 kB
Slab:            14708 kB
Committed_AS:    71792 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-06-02 18:53:38 (client local time) WITH STATUS 0 IN 13.4839 SECONDS
stats: 26984 7 13.4839 0
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c Pueblo version 1.2 (Sept 2004)
c Developed @ University of Michigan, Ann Arbor, MI
c  by Hossein Sheini
c /oldhome/oroussel/tmp/wulflinc3/normalized-mps-v2-20-10-dano3_4.opb:15558: numeric constant `4194304000' out of range (2147483647)
s UNKNOWN
#### 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): 0.81 0.77 0.82 1/54 16703
Raw data (stat): 16703 (runsolver) R 16702 20224 20223 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 852090481 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+10.0014 s]
Raw data (loadavg): 0.84 0.78 0.82 2/54 16703
Raw data (stat): 16703 (Pueblo-v2) R 16702 20224 20223 0 -1 0 9605 0 0 0 972 26 0 0 25 0 1 0 852090481 45031424 9580 4294967295 134512640 134581267 3221224576 3217028812 134533408 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10994 9580 566 18 0 10976 0
vsize: 43976
[startup+13.4936 s]
Raw data (loadavg): 0.84 0.78 0.82 1/53 16703
Raw data (stat): 16703 (Pueblo-v2) R 16702 20224 20223 0 -1 0 9605 0 0 0 972 26 0 0 25 0 1 0 852090481 45031424 9580 4294967295 134512640 134581267 3221224576 3217028812 134533408 0 0 7 0 0 0 0 17 1 0 0
Raw data (statm): 10994 9580 566 18 0 10976 0
vsize: 0

Child status: 0
Real time (s): 13.4927
CPU time (s): 13.4839
CPU user time (s): 13.079
CPU system time (s): 0.404938
CPU usage (%): 99.9353
Max. virtual memory (Kb): 43976
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####