Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:15 2013

Optimize a model with 516 rows, 1013 columns and 3525 nonzeros
Presolve removed 16 rows and 146 columns
Presolve time: 0.06s
Presolved: 500 rows, 867 columns, 2600 nonzeros
Variable types: 497 continuous, 370 integer (370 binary)
Found heuristic solution: objective 2970.4554798

Root relaxation: objective 2.967974e+03, 6 iterations, 0.00 seconds

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

     0     0 2967.97401    0    2 2970.45548 2967.97401  0.08%     -    0s
     0     0 2968.18714    0    2 2970.45548 2968.18714  0.08%     -    0s
     0     0 2968.39849    0    2 2970.45548 2968.39849  0.07%     -    0s
     0     0 2968.60809    0    2 2970.45548 2968.60809  0.06%     -    0s
     0     0 2968.81595    0    2 2970.45548 2968.81595  0.06%     -    0s
     0     0 2969.02208    0    2 2970.45548 2969.02208  0.05%     -    0s
     0     0 2969.22650    0    2 2970.45548 2969.22650  0.04%     -    0s
     0     0 2969.42922    0    2 2970.45548 2969.42922  0.03%     -    0s
     0     0 2969.63025    0    2 2970.45548 2969.63025  0.03%     -    0s
     0     0 2969.82961    0    2 2970.45548 2969.82961  0.02%     -    0s
     0     0 2970.02731    0    2 2970.45548 2970.02731  0.01%     -    0s
     0     0 2970.22336    0    2 2970.45548 2970.22336  0.01%     -    0s

Explored 0 nodes (58 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.970455479823e+03, best bound 2.970223364400e+03, gap 0.0078%