Gurobi 5.0.1 (linux64) logging started Wed Dec 19 18:31:47 2012

Optimize a model with 3722 rows, 3721 columns and 16590 nonzeros
Presolve removed 3333 rows and 2380 columns
Presolve time: 0.06s
Presolved: 389 rows, 1341 columns, 4345 nonzeros
Variable types: 55 continuous, 1286 integer (1286 binary)

Root relaxation: objective 5.666431e+02, 251 iterations, 0.00 seconds

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

     0     0  566.64307    0   66          -  566.64307     -      -    0s
     0     0  586.51675    0   67          -  586.51675     -      -    0s
     0     0  589.50000    0   63          -  589.50000     -      -    0s
     0     0  590.33333    0   54          -  590.33333     -      -    0s
     0     0  590.33333    0   56          -  590.33333     -      -    0s
     0     0  591.66667    0   52          -  591.66667     -      -    0s
     0     0  592.66667    0   51          -  592.66667     -      -    0s
     0     0  594.06667    0   54          -  594.06667     -      -    0s
     0     0  595.00000    0   54          -  595.00000     -      -    0s
     0     0  595.00000    0   54          -  595.00000     -      -    0s
     0     0  600.66667    0   35          -  600.66667     -      -    0s
     0     0  600.66667    0   35          -  600.66667     -      -    0s
H    0     0                     607.0000000  600.66667  1.04%     -    0s
H    0     0                     605.0000000  600.66667  0.72%     -    0s
     0     0  602.26316    0   10  605.00000  602.26316  0.45%     -    0s
     0     0     cutoff    0       605.00000  604.00061  0.17%     -    0s

Explored 0 nodes (642 simplex iterations) in 0.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.050000000000e+02, best bound 6.050000000000e+02, gap 0.0%