Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:55:59 2013

Optimize a model with 26289 rows, 2916 columns and 80190 nonzeros
Presolve removed 3477 rows and 1505 columns
Presolve time: 0.19s
Presolved: 22812 rows, 1411 columns, 69454 nonzeros
Variable types: 20 continuous, 1391 integer (1391 binary)
Found heuristic solution: objective 68206.000000

Root relaxation: objective 5.612589e+04, 6591 iterations, 0.37 seconds

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

     0     0 56125.8947    0    8 68206.0000 56125.8947  17.7%     -    0s
H    0     0                    56145.000000 56125.8947  0.03%     -    0s
H    0     0                    56136.000000 56125.8947  0.02%     -    0s
H    0     0                    56134.000000 56125.8947  0.01%     -    0s
     0     0 56127.7776    0    9 56134.0000 56127.7776  0.01%     -    0s
     0     0 56127.7776    0    7 56134.0000 56127.7776  0.01%     -    0s
H    0     0                    56131.000000 56127.7776  0.01%     -    0s

Explored 0 nodes (6705 simplex iterations) in 0.85 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.613100000000e+04, best bound 5.612800000000e+04, gap 0.0053%