Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:05:06 2012

Optimize a model with 1762 rows, 1681 columns and 10114 nonzeros
Presolve removed 775 rows and 897 columns
Presolve time: 0.06s
Presolved: 987 rows, 784 columns, 16161 nonzeros
Variable types: 39 continuous, 745 integer (745 binary)

Root relaxation: objective 4.114768e+02, 179 iterations, 0.00 seconds

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

     0     0  411.47679    0   67          -  411.47679     -      -    0s
     0     0  420.87493    0   55          -  420.87493     -      -    0s
     0     0  422.75023    0   69          -  422.75023     -      -    0s
     0     0  425.11667    0   63          -  425.11667     -      -    0s
     0     0  425.40580    0   63          -  425.40580     -      -    0s
     0     0  426.41667    0   41          -  426.41667     -      -    0s
     0     0  426.41667    0   41          -  426.41667     -      -    0s
     0     0  429.48007    0   59          -  429.48007     -      -    0s
     0     0  429.48007    0   59          -  429.48007     -      -    0s
     0     2  429.48007    0   59          -  429.48007     -      -    0s
*  141    77              15     459.0000000  431.57647  5.97%  10.9    0s
*  223    97              14     455.0000000  432.97138  4.84%  10.8    0s
H  225    90                     454.0000000  432.97138  4.63%  10.7    0s
*  358   121              13     453.0000000  434.55814  4.07%  10.7    0s
*  380   123              13     452.0000000  434.74984  3.82%  10.6    0s

Cutting planes:
  Learned: 3
  Gomory: 3
  Cover: 88
  Implied bound: 2
  Clique: 5
  MIR: 20
  GUB cover: 18
  Zero half: 2
  Mod-K: 1

Explored 715 nodes (8374 simplex iterations) in 1.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.520000000000e+02, best bound 4.520000000000e+02, gap 0.0%