Gurobi 5.6.3 (linux64) logging started Tue Oct  7 20:35:42 2014

Optimize a model with 3721 rows, 3661 columns and 14460 nonzeros
Presolve time: 0.10s
Presolved: 3721 rows, 3661 columns, 14460 nonzeros
Variable types: 1 continuous, 3660 integer (3660 binary)
Found heuristic solution: objective 1.1038826
Found heuristic solution: objective 1.0841487
Found heuristic solution: objective 0.7213510

Root relaxation: objective 1.759260e-01, 2093 iterations, 0.13 seconds

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

     0     0    0.17593    0  519    0.72135    0.17593  75.6%     -    0s
H    0     0                       0.7067798    0.17593  75.1%     -    0s
H    0     0                       0.3108895    0.17593  43.4%     -    0s
     0     0    0.19058    0  377    0.31089    0.19058  38.7%     -    0s
     0     0    0.19058    0  382    0.31089    0.19058  38.7%     -    0s
H    0     0                       0.3008771    0.19058  36.7%     -    0s
     0     0    0.19580    0  344    0.30088    0.19580  34.9%     -    0s
     0     0    0.19777    0  367    0.30088    0.19777  34.3%     -    0s
     0     0    0.19850    0  381    0.30088    0.19850  34.0%     -    0s
     0     0    0.19859    0  411    0.30088    0.19859  34.0%     -    0s
     0     0    0.19859    0  391    0.30088    0.19859  34.0%     -    0s
H    0     0                       0.2788883    0.19859  28.8%     -    0s
H    0     0                       0.2748161    0.19859  27.7%     -    0s
     0     2    0.25403    0  112    0.27482    0.25403  7.56%     -    0s

Cutting planes:
  Gomory: 4
  MIR: 6
  Zero half: 2

Explored 3 nodes (10649 simplex iterations) in 0.97 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.748160511501e-01, best bound 2.748160511501e-01, gap 0.0%