Gurobi 5.6.3 (linux64) logging started Tue Oct  7 23:15:55 2014

Optimize a model with 18907 rows, 18906 columns and 56444 nonzeros
Presolve time: 0.38s
Presolved: 18907 rows, 18906 columns, 56444 nonzeros
Variable types: 0 continuous, 18906 integer (18906 binary)
Found heuristic solution: objective 21.4617043

Root relaxation: objective 1.165690e+01, 1660 iterations, 0.12 seconds

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

*    0     0               0      11.6569024   11.65690  0.00%     -    0s

Explored 0 nodes (1660 simplex iterations) in 0.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.165690239362e+01, best bound 1.165690239362e+01, gap 0.0%