Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:02:56 2013

Optimize a model with 54809 rows, 4761 columns and 166635 nonzeros
Presolve removed 5634 rows and 2441 columns
Presolve time: 0.38s
Presolved: 49175 rows, 2320 columns, 149107 nonzeros
Variable types: 24 continuous, 2296 integer (2296 binary)
Found heuristic solution: objective 113792.00000

Root relaxation: objective 9.289855e+04, 12335 iterations, 1.13 seconds

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

     0     0 92898.5455    0   13 113792.000 92898.5455  18.4%     -    1s
H    0     0                    92921.000000 92898.5455  0.02%     -    1s
H    0     0                    92919.000000 92898.5455  0.02%     -    1s
H    0     0                    92917.000000 92898.5455  0.02%     -    1s
     0     0 92898.5455    0   13 92917.0000 92898.5455  0.02%     -    1s
     0     0 92898.5455    0   12 92917.0000 92898.5455  0.02%     -    2s
H    0     0                    92914.000000 92898.5455  0.02%     -    2s
     0     0 92898.5455    0   24 92914.0000 92898.5455  0.02%     -    2s
H    0     0                    92910.000000 92898.5455  0.01%     -    2s
     0     2 92898.5455    0   12 92910.0000 92898.5455  0.01%     -    2s
H   10     7                    92909.000000 92898.5455  0.01%   8.8    2s
H  638   347                    92907.000000 92898.6165  0.01%  23.3    3s

Cutting planes:
  Gomory: 4
  MIR: 36
  Zero half: 15

Explored 638 nodes (30161 simplex iterations) in 3.57 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.290700000000e+04, best bound 9.289900000000e+04, gap 0.0086%