Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:11:57 2013

Optimize a model with 575 rows, 225 columns and 1800 nonzeros
Presolve removed 245 rows and 126 columns
Presolve time: 0.00s
Presolved: 330 rows, 99 columns, 1059 nonzeros
Variable types: 6 continuous, 93 integer (93 binary)
Found heuristic solution: objective 4743.0000000

Root relaxation: objective 3.888256e+03, 7 iterations, 0.00 seconds

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

     0     0 3888.25641    0    2 4743.00000 3888.25641  18.0%     -    0s
H    0     0                    3893.0000000 3888.25641  0.12%     -    0s
     0     0     cutoff    0      3893.00000 3892.00389  0.03%     -    0s

Cutting planes:
  MIR: 1

Explored 0 nodes (8 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.893000000000e+03, best bound 3.893000000000e+03, gap 0.0%