Gurobi 5.6.3 (linux64) logging started Wed Oct  8 03:14:19 2014

Optimize a model with 43891 rows, 43890 columns and 131252 nonzeros
Presolve time: 1.14s
Presolved: 43891 rows, 43890 columns, 131252 nonzeros
Variable types: 0 continuous, 43890 integer (43890 binary)
Found heuristic solution: objective 19.3126585

Root relaxation: objective 1.422131e+01, 2522 iterations, 0.34 seconds

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

*    0     0               0      14.2213113   14.22131  0.00%     -    1s

Explored 0 nodes (2522 simplex iterations) in 1.59 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.422131125719e+01, best bound 1.422131125719e+01, gap 0.0%