Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:28 2013

Optimize a model with 1016 rows, 2013 columns and 7025 nonzeros
Presolve removed 13 rows and 51 columns
Presolve time: 0.06s
Presolved: 1003 rows, 1962 columns, 5885 nonzeros
Variable types: 1000 continuous, 962 integer (962 binary)
Found heuristic solution: objective 3887.5966454

Root relaxation: objective 3.883314e+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 3883.31425    0    2 3887.59665 3883.31425  0.11%     -    0s
     0     0 3883.59420    0    2 3887.59665 3883.59420  0.10%     -    0s
     0     0 3883.87140    0    2 3887.59665 3883.87140  0.10%     -    0s
     0     0 3884.14594    0    2 3887.59665 3884.14594  0.09%     -    0s
     0     0 3884.41789    0    2 3887.59665 3884.41789  0.08%     -    0s
     0     0 3884.68731    0    2 3887.59665 3884.68731  0.07%     -    0s
     0     0 3884.95427    0    2 3887.59665 3884.95427  0.07%     -    0s
     0     0 3885.21883    0    2 3887.59665 3885.21883  0.06%     -    0s
     0     0 3885.48105    0    2 3887.59665 3885.48105  0.05%     -    0s
     0     0 3885.74099    0    2 3887.59665 3885.74099  0.05%     -    0s
     0     0 3885.99869    0    2 3887.59665 3885.99869  0.04%     -    0s
     0     0 3886.25421    0    2 3887.59665 3886.25421  0.03%     -    0s
     0     0 3886.50759    0    2 3887.59665 3886.50759  0.03%     -    0s
     0     0 3886.75889    0    2 3887.59665 3886.75889  0.02%     -    0s
     0     0 3887.00814    0    2 3887.59665 3887.00814  0.02%     -    0s
     0     0 3887.25540    0    2 3887.59665 3887.25540  0.01%     -    0s

Explored 0 nodes (80 simplex iterations) in 0.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.887596645355e+03, best bound 3.887255395657e+03, gap 0.0088%