Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:44:52 2013

Optimize a model with 55574 rows, 54834 columns and 219114 nonzeros
Presolve removed 2832 rows and 0 columns
Presolve time: 0.35s
Presolved: 52742 rows, 54834 columns, 213450 nonzeros
Variable types: 54760 continuous, 74 integer (74 binary)

Root relaxation: objective 8.408184e+04, 12204 iterations, 2.39 seconds

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

     0     0 84081.8354    0    3          - 84081.8354     -      -    2s
H    0     0                    84426.000000 84081.8354  0.41%     -    3s
     0     0 84083.4589    0    4 84426.0000 84083.4589  0.41%     -    3s
     0     0 84083.5163    0    4 84426.0000 84083.5163  0.41%     -    3s
     0     0 84086.3700    0    3 84426.0000 84086.3700  0.40%     -    4s
H    0     0                    84230.000000 84086.3700  0.17%     -    5s
     0     0 84086.3700    0    2 84230.0000 84086.3700  0.17%     -    7s
     0     0 84090.5574    0    3 84230.0000 84090.5574  0.17%     -    7s
     0     0 84186.4013    0    2 84230.0000 84186.4013  0.05%     -    8s
*    0     0               0    84212.000000 84212.0000   0.0%     -    8s

Cutting planes:
  Gomory: 1

Explored 0 nodes (16893 simplex iterations) in 8.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.421200000000e+04, best bound 8.421200000000e+04, gap 0.0%