Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:05:03 2013

Optimize a model with 62268 rows, 5184 columns and 189216 nonzeros
Presolve removed 5851 rows and 2649 columns
Presolve time: 0.51s
Presolved: 56417 rows, 2535 columns, 171112 nonzeros
Variable types: 27 continuous, 2508 integer (2508 binary)
Found heuristic solution: objective 101072.00000

Root relaxation: objective 8.036568e+04, 14337 iterations, 1.49 seconds

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

     0     0 80365.6806    0    9 101072.000 80365.6806  20.5%     -    2s
H    0     0                    80383.000000 80365.6806  0.02%     -    2s
H    0     0                    80382.000000 80365.6806  0.02%     -    2s
H    0     0                    80380.000000 80365.6806  0.02%     -    2s
     0     0 80366.7837    0   22 80380.0000 80366.7837  0.02%     -    2s
     0     0 80366.7837    0    9 80380.0000 80366.7837  0.02%     -    2s
H    0     0                    80376.000000 80366.7837  0.01%     -    2s
     0     0 80368.0779    0   28 80376.0000 80368.0779  0.01%     -    2s

Cutting planes:
  Gomory: 7
  Implied bound: 1
  MIR: 13
  Zero half: 1

Explored 0 nodes (16638 simplex iterations) in 2.89 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.037600000000e+04, best bound 8.036900000000e+04, gap 0.0087%