Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:37:52 2012

Optimize a model with 76559 rows, 57840 columns and 286318 nonzeros
Presolve removed 740 rows and 4800 columns (presolve time = 5s) ...
Presolve removed 742 rows and 4802 columns
Presolve time: 6.64s
Presolved: 75817 rows, 53038 columns, 279206 nonzeros
Variable types: 0 continuous, 53038 integer (53038 binary)
Found heuristic solution: objective 240.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: infeasible, 428 iterations, 0.05 seconds

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

     0     0 infeasible    0         3.00000    2.00000  33.3%     -    6s

Explored 0 nodes (428 simplex iterations) in 6.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%