Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:59:04 2013

Optimize a model with 39773 rows, 3844 columns and 121086 nonzeros
Presolve removed 5170 rows and 1991 columns
Presolve time: 0.29s
Presolved: 34603 rows, 1853 columns, 104927 nonzeros
Variable types: 19 continuous, 1834 integer (1834 binary)
Found heuristic solution: objective 92872.000000

Root relaxation: objective 7.714305e+04, 7348 iterations, 0.56 seconds

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

     0     0 77143.0455    0   10 92872.0000 77143.0455  16.9%     -    0s
H    0     0                    77151.000000 77143.0455  0.01%     -    1s
     0     0 77143.5455    0   19 77151.0000 77143.5455  0.01%     -    1s

Cutting planes:
  Gomory: 6
  Implied bound: 1
  MIR: 8
  Zero half: 1

Explored 0 nodes (7455 simplex iterations) in 1.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.715100000000e+04, best bound 7.714400000000e+04, gap 0.0091%