Gurobi 5.6.3 (linux64) logging started Wed Oct  8 03:28:21 2014

Optimize a model with 45157 rows, 45156 columns and 135044 nonzeros
Presolve time: 1.14s
Presolved: 45157 rows, 45156 columns, 135044 nonzeros
Variable types: 0 continuous, 45156 integer (45156 binary)
Found heuristic solution: objective 24.9478035

Root relaxation: objective 1.417344e+01, 2535 iterations, 0.34 seconds

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

*    0     0               0      14.1734415   14.17344  0.00%     -    1s

Explored 0 nodes (2535 simplex iterations) in 1.60 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.417344145462e+01, best bound 1.417344145462e+01, gap 0.0%