Gurobi 5.6.3 (linux64) logging started Wed Oct  8 03:38:13 2014

Optimize a model with 46011 rows, 46010 columns and 137602 nonzeros
Presolve time: 1.21s
Presolved: 46011 rows, 46010 columns, 137602 nonzeros
Variable types: 0 continuous, 46010 integer (46010 binary)
Found heuristic solution: objective 23.2553812

Root relaxation: objective 1.454684e+01, 2610 iterations, 0.35 seconds

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

*    0     0               0      14.5468434   14.54684  0.00%     -    1s

Explored 0 nodes (2610 simplex iterations) in 1.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.454684340105e+01, best bound 1.454684340105e+01, gap 0.0%