Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:01:15 2013

Optimize a model with 84 rows, 64 columns and 224 nonzeros
Presolve removed 28 rows and 28 columns
Presolve time: 0.00s
Presolved: 56 rows, 36 columns, 168 nonzeros
Variable types: 8 continuous, 28 integer (28 binary)
Found heuristic solution: objective 1298.0000000

Root relaxation: objective 4.370000e+02, 19 iterations, 0.00 seconds

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

     0     0  437.00000    0   15 1298.00000  437.00000  66.3%     -    0s
     0     0  575.81636    0    8 1298.00000  575.81636  55.6%     -    0s
     0     0  591.48914    0   11 1298.00000  591.48914  54.4%     -    0s
     0     0  592.15880    0   11 1298.00000  592.15880  54.4%     -    0s
     0     0  592.15880    0   11 1298.00000  592.15880  54.4%     -    0s
H    0     0                     854.0000000  592.15880  30.7%     -    0s
     0     2  603.11362    0   11  854.00000  603.11362  29.4%     -    0s
*   44    18               9     847.0000000  639.00000  24.6%   3.9    0s
*   78    25               9     843.0000000  685.85542  18.6%   4.0    0s
H  169    17                     841.0000000  786.00000  6.54%   2.8    0s
*  185    13               9     835.0000000  788.00000  5.63%   2.8    0s
*  217     3               9     830.0000000  820.00000  1.20%   2.7    0s

Cutting planes:
  Implied bound: 10
  MIR: 23

Explored 223 nodes (649 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.300000000000e+02, best bound 8.300000000000e+02, gap 0.0%