Gurobi 5.6.3 (linux64) logging started Wed Oct  8 00:10:53 2014

Optimize a model with 25123 rows, 25122 columns and 75050 nonzeros
Presolve time: 0.56s
Presolved: 25123 rows, 25122 columns, 75050 nonzeros
Variable types: 0 continuous, 25122 integer (25122 binary)
Found heuristic solution: objective 17.8960366

Root relaxation: objective 1.297089e+01, 2203 iterations, 0.21 seconds

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

*    0     0               0      12.9708856   12.97089  0.00%     -    0s

Explored 0 nodes (2203 simplex iterations) in 0.84 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.297088561183e+01, best bound 1.297088561183e+01, gap 0.0%