Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:36 2012

Optimize a model with 227 rows, 135 columns and 700 nonzeros
Presolve time: 0.00s
Presolved: 227 rows, 135 columns, 700 nonzeros
Variable types: 0 continuous, 135 integer (135 binary)
Found heuristic solution: objective 63.0000000
Found heuristic solution: objective 54.0000000

Root relaxation: objective 0.000000e+00, 40 iterations, 0.00 seconds

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

     0     0    0.00000    0   22   54.00000    0.00000   100%     -    0s
     0     0    0.87013    0   31   54.00000    0.87013  98.4%     -    0s
     0     0    0.90909    0   24   54.00000    0.90909  98.3%     -    0s
     0     0    0.95455    0   24   54.00000    0.95455  98.2%     -    0s
     0     0    0.95455    0   24   54.00000    0.95455  98.2%     -    0s
     0     0    1.00000    0   24   54.00000    1.00000  98.1%     -    0s
     0     0    1.00000    0   24   54.00000    1.00000  98.1%     -    0s
     0     0    1.00000    0   24   54.00000    1.00000  98.1%     -    0s
     0     0    1.00000    0   24   54.00000    1.00000  98.1%     -    0s
     0     2    1.02260    0   24   54.00000    1.02260  98.1%     -    0s
*   80    48              15      50.0000000   11.00000  78.0%  22.8    0s
H  138    77                      48.0000000   16.02479  66.6%  22.9    0s
*  175    96              16      47.0000000   16.03030  65.9%  21.7    0s
*  307    93              13      46.0000000   16.18182  64.8%  18.2    0s
* 1623   109              20      45.0000000   33.80000  24.9%  16.6    0s

Cutting planes:
  Gomory: 1
  Zero half: 5

Explored 2475 nodes (38140 simplex iterations) in 0.98 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%