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 2810.0000000

Root relaxation: objective 4.700000e+02, 25 iterations, 0.00 seconds

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

     0     0  470.00000    0   21 2810.00000  470.00000  83.3%     -    0s
     0     0  696.05668    0   16 2810.00000  696.05668  75.2%     -    0s
     0     0  719.80913    0   20 2810.00000  719.80913  74.4%     -    0s
     0     0  719.80913    0   20 2810.00000  719.80913  74.4%     -    0s
     0     0  719.80913    0   20 2810.00000  719.80913  74.4%     -    0s
H    0     0                    1538.0000000  719.80913  53.2%     -    0s
     0     2  720.26782    0   20 1538.00000  720.26782  53.2%     -    0s
*  118    63              14    1532.0000000  866.46063  43.4%   4.1    0s
H  600   134                    1507.0000000 1108.64045  26.4%   3.3    0s

Cutting planes:
  Gomory: 13
  Implied bound: 1
  MIR: 12

Explored 1917 nodes (5922 simplex iterations) in 0.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.507000000000e+03, best bound 1.507000000000e+03, gap 0.0%