Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:33:40 2013

Optimize a model with 52704 rows, 51984 columns and 207504 nonzeros
Presolve removed 72 rows and 0 columns
Presolve time: 0.23s
Presolved: 52632 rows, 51984 columns, 207432 nonzeros
Variable types: 51912 continuous, 72 integer (72 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    6863    6.2035742e+04   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 6.203574e+04, 6863 iterations, 5.11 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 62035.7424    0   59          - 62035.7424     -      -    5s
H    0     0                    103853.00000 62035.7424  40.3%     -    8s
     0     0 81450.0097    0   13 103853.000 81450.0097  21.6%     -   16s
H    0     0                    95765.000000 81450.0097  14.9%     -   16s
     0     0 84310.7348    0   10 95765.0000 84310.7348  12.0%     -   18s
H    0     0                    93676.185296 84310.7348  10.0%     -   18s
H    0     0                    89105.000000 84310.7348  5.38%     -   18s
     0     0 85633.1702    0    5 89105.0000 85633.1702  3.90%     -   19s
     0     0 85681.0515    0    4 89105.0000 85681.0515  3.84%     -   19s
H    0     0                    88591.000000 85681.0515  3.28%     -   19s
H    0     0                    86816.000000 85681.0515  1.31%     -   19s
     0     2 85702.0030    0    4 86816.0000 85702.0030  1.28%     -   21s
H    5     5                    86522.444444 86083.8514  0.51%   349   22s
*    6     6               5    86238.000000 86083.8514  0.18%   314   22s

Cutting planes:
  Implied bound: 70

Explored 12 nodes (18074 simplex iterations) in 23.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.623800000000e+04, best bound 8.623800000000e+04, gap 0.0%