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 383 rows and 148 columns
Presolve time: 0.00s
Presolved: 192 rows, 77 columns, 600 nonzeros
Variable types: 2 continuous, 75 integer (75 binary)
Found heuristic solution: objective 4675.0000000

Root relaxation: objective 4.558463e+03, 2 iterations, 0.00 seconds

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

     0     0 4558.46341    0    2 4675.00000 4558.46341  2.49%     -    0s
H    0     0                    4577.0000000 4558.46341  0.40%     -    0s
H    0     0                    4561.0000000 4558.46341  0.06%     -    0s
     0     0 4559.11529    0    3 4561.00000 4559.11529  0.04%     -    0s

Cutting planes:
  MIR: 1

Explored 0 nodes (5 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.561000000000e+03, best bound 4.561000000000e+03, gap 0.0%