Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:16 2012

Optimize a model with 442 rows, 441 columns and 1936 nonzeros
Presolve removed 278 rows and 244 columns
Presolve time: 0.00s
Presolved: 164 rows, 197 columns, 1420 nonzeros
Variable types: 17 continuous, 180 integer (180 binary)
Found heuristic solution: objective 411.0000000

Root relaxation: objective 2.778197e+02, 49 iterations, 0.00 seconds

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

     0     0  277.81967    0   29  411.00000  277.81967  32.4%     -    0s
     0     0  292.28747    0   28  411.00000  292.28747  28.9%     -    0s
     0     0  293.06096    0   31  411.00000  293.06096  28.7%     -    0s
     0     0  293.06096    0   31  411.00000  293.06096  28.7%     -    0s
     0     0  293.09839    0   31  411.00000  293.09839  28.7%     -    0s
     0     0  293.09839    0   31  411.00000  293.09839  28.7%     -    0s
     0     2  295.78796    0   31  411.00000  295.78796  28.0%     -    0s
H   27    17                     393.0000000  296.40021  24.6%   8.4    0s
H   54    31                     392.0000000  306.18999  21.9%   9.3    0s
*  273    94              11     350.0000000  314.69412  10.1%   7.4    0s
H  325    72                     339.0000000  315.94872  6.80%   7.5    0s
*  366    69              16     336.0000000  318.94872  5.07%   7.5    0s
*  412    65              17     335.0000000  320.90178  4.21%   7.2    0s

Cutting planes:
  Learned: 2
  Gomory: 3
  Cover: 27
  Implied bound: 32
  Clique: 4
  MIR: 8

Explored 604 nodes (4268 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.350000000000e+02, best bound 3.350000000000e+02, gap 0.0%