Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:01:14 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 2055.0000000

Root relaxation: objective 5.200000e+02, 23 iterations, 0.00 seconds

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

     0     0  520.00000    0   21 2055.00000  520.00000  74.7%     -    0s
     0     0  713.49473    0   18 2055.00000  713.49473  65.3%     -    0s
     0     0  729.98500    0   19 2055.00000  729.98500  64.5%     -    0s
     0     0  729.98500    0   19 2055.00000  729.98500  64.5%     -    0s
     0     0  729.98500    0   19 2055.00000  729.98500  64.5%     -    0s
H    0     0                    1485.0000000  729.98500  50.8%     -    0s
     0     2  731.07442    0   19 1485.00000  731.07442  50.8%     -    0s
*   22    15              13    1483.0000000  757.04076  49.0%   5.2    0s
*   63    42              13    1388.0000000  778.17576  43.9%   5.5    0s
H  821   195                    1376.0000000 1089.64000  20.8%   4.0    0s

Cutting planes:
  Gomory: 14
  Implied bound: 2
  MIR: 11

Explored 2909 nodes (8214 simplex iterations) in 0.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.375999999999e+03, best bound 1.375999999999e+03, gap 0.0%