Gurobi 5.6.3 (linux64) logging started Wed Oct  8 00:00:51 2014

Optimize a model with 23871 rows, 23870 columns and 71302 nonzeros
Presolve time: 0.53s
Presolved: 23871 rows, 23870 columns, 71302 nonzeros
Variable types: 0 continuous, 23870 integer (23870 binary)
Found heuristic solution: objective 21.5243380

Root relaxation: objective 1.249369e+01, 1908 iterations, 0.17 seconds

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

*    0     0               0      12.4936922   12.49369  0.00%     -    0s

Explored 0 nodes (1908 simplex iterations) in 0.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.249369215654e+01, best bound 1.249369215654e+01, gap 0.0%