Gurobi 5.6.3 (linux64) logging started Tue Oct  7 20:41:07 2014

Optimize a model with 4624 rows, 4557 columns and 18023 nonzeros
Presolve time: 0.11s
Presolved: 4624 rows, 4557 columns, 18023 nonzeros
Variable types: 1 continuous, 4556 integer (4556 binary)
Found heuristic solution: objective 0.9354480
Found heuristic solution: objective 0.8449033
Found heuristic solution: objective 0.7521258

Root relaxation: objective 1.523820e-01, 2198 iterations, 0.13 seconds

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

     0     0    0.15238    0  528    0.75213    0.15238  79.7%     -    0s
H    0     0                       0.6748783    0.15238  77.4%     -    0s
H    0     0                       0.2400127    0.15238  36.5%     -    0s
     0     0    0.22489    0   86    0.24001    0.22489  6.30%     -    0s
     0     0    0.22489    0  103    0.24001    0.22489  6.30%     -    0s
H    0     0                       0.2375035    0.22489  5.31%     -    0s
H    0     0                       0.2343891    0.22489  4.05%     -    0s
     0     0    0.22515    0   93    0.23439    0.22515  3.94%     -    0s
H    0     0                       0.2283952    0.22515  1.42%     -    0s
H    0     0                       0.2269218    0.22515  0.78%     -    0s
     0     0     cutoff    0         0.22692    0.22692  0.00%     -    0s

Cutting planes:
  Implied bound: 3
  MIR: 6

Explored 0 nodes (7245 simplex iterations) in 0.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.269217801520e-01, best bound 2.269217801520e-01, gap 0.0%