Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:59:56 2013

Optimize a model with 43744 rows, 4096 columns and 133120 nonzeros
Presolve removed 7701 rows and 2157 columns
Presolve time: 0.32s
Presolved: 36043 rows, 1939 columns, 109407 nonzeros
Variable types: 21 continuous, 1918 integer (1918 binary)
Found heuristic solution: objective 98770.000000

Root relaxation: objective 8.468354e+04, 5148 iterations, 0.41 seconds

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

     0     0 84683.5417    0    6 98770.0000 84683.5417  14.3%     -    0s
H    0     0                    84697.000000 84683.5417  0.02%     -    0s
H    0     0                    84690.000000 84683.5417  0.01%     -    0s

Explored 0 nodes (5160 simplex iterations) in 0.90 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.469000000000e+04, best bound 8.468400000000e+04, gap 0.0071%