Gurobi 5.6.3 (linux64) logging started Wed Oct  8 00:39:24 2014

Optimize a model with 28393 rows, 28392 columns and 84840 nonzeros
Presolve time: 0.67s
Presolved: 28393 rows, 28392 columns, 84840 nonzeros
Variable types: 0 continuous, 28392 integer (28392 binary)
Found heuristic solution: objective 17.8821385

Root relaxation: objective 1.311988e+01, 2161 iterations, 0.21 seconds

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

*    0     0               0      13.1198844   13.11988  0.00%     -    0s

Explored 0 nodes (2161 simplex iterations) in 0.95 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.311988436405e+01, best bound 1.311988436405e+01, gap 0.0%