Gurobi 5.6.3 (linux64) logging started Wed Oct  8 00:30:22 2014

Optimize a model with 27391 rows, 27390 columns and 81840 nonzeros
Presolve time: 0.66s
Presolved: 27391 rows, 27390 columns, 81840 nonzeros
Variable types: 0 continuous, 27390 integer (27390 binary)
Found heuristic solution: objective 18.3562528

Root relaxation: objective 1.216163e+01, 1965 iterations, 0.20 seconds

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

*    0     0               0      12.1616270   12.16163  0.00%     -    0s

Explored 0 nodes (1965 simplex iterations) in 0.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.216162700341e+01, best bound 1.216162700341e+01, gap 0.0%