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 1872.0000000

Root relaxation: objective 4.550000e+02, 22 iterations, 0.00 seconds

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

     0     0  455.00000    0   18 1872.00000  455.00000  75.7%     -    0s
     0     0  661.17065    0   17 1872.00000  661.17065  64.7%     -    0s
     0     0  661.17065    0   17 1872.00000  661.17065  64.7%     -    0s
     0     0  661.17065    0   17 1872.00000  661.17065  64.7%     -    0s
     0     2  672.26549    0   17 1872.00000  672.26549  64.1%     -    0s
*   15    14              11    1414.0000000  672.26549  52.5%   5.3    0s
*  224    97              10    1405.0000000  905.00000  35.6%   3.1    0s
H  319   125                    1395.0000000  987.00000  29.2%   2.9    0s
*  407   135               9    1376.0000000 1002.00000  27.2%   2.7    0s
*  433   141              10    1374.0000000 1003.00000  27.0%   2.6    0s

Cutting planes:
  Gomory: 9
  Implied bound: 1
  MIR: 15

Explored 2063 nodes (5071 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.374000000000e+03, best bound 1.374000000000e+03, gap 0.0%