Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:23:30 2012

Optimize a model with 1762 rows, 1681 columns and 10247 nonzeros
Presolve removed 538 rows and 690 columns
Presolve time: 0.05s
Presolved: 1224 rows, 991 columns, 19086 nonzeros
Variable types: 40 continuous, 951 integer (951 binary)

Root relaxation: objective 3.761809e+02, 200 iterations, 0.01 seconds

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

     0     0  376.18089    0   79          -  376.18089     -      -    0s
     0     0  405.29977    0   79          -  405.29977     -      -    0s
     0     0  408.27667    0   76          -  408.27667     -      -    0s
     0     0  409.15563    0   80          -  409.15563     -      -    0s
     0     0  409.23507    0   81          -  409.23507     -      -    0s
     0     0  409.23507    0   76          -  409.23507     -      -    0s
     0     0  409.23507    0   77          -  409.23507     -      -    0s
     0     0  409.23507    0   77          -  409.23507     -      -    0s
     0     0  409.23507    0   77          -  409.23507     -      -    0s
     0     2  409.23507    0   76          -  409.23507     -      -    0s
H  608   404                     495.0000000  446.68342  9.76%  12.3    2s
H  640   395                     490.0000000  446.68342  8.84%  14.5    3s
H  754   374                     482.0000000  446.68342  7.33%  17.9    4s
H  783   321                     470.0000000  446.68342  4.96%  18.6    4s

Cutting planes:
  Learned: 1
  Gomory: 13
  Cover: 5
  Clique: 1
  MIR: 15
  GUB cover: 8
  Zero half: 5

Explored 838 nodes (15918 simplex iterations) in 4.24 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.700000000000e+02, best bound 4.700000000000e+02, gap 0.0%