Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:35 2012

Optimize a model with 105 rows, 67 columns and 327 nonzeros
Presolve time: 0.00s
Presolved: 105 rows, 67 columns, 327 nonzeros
Variable types: 0 continuous, 67 integer (67 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 0.000000e+00, 24 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   15   25.00000    0.00000   100%     -    0s
     0     0    0.98667    0   19   25.00000    0.98667  96.1%     -    0s
     0     0    1.03467    0   22   25.00000    1.03467  95.9%     -    0s
H    0     0                      24.0000000    1.03467  95.7%     -    0s
     0     0    1.12000    0   23   24.00000    1.12000  95.3%     -    0s
     0     0    1.16889    0   25   24.00000    1.16889  95.1%     -    0s
     0     0    1.22271    0   28   24.00000    1.22271  94.9%     -    0s
H    0     0                      21.0000000    1.22271  94.2%     -    0s
     0     0    1.22667    0   18   21.00000    1.22667  94.2%     -    0s
     0     0    1.22714    0   33   21.00000    1.22714  94.2%     -    0s
     0     0    1.22714    0   32   21.00000    1.22714  94.2%     -    0s
     0     2    1.24240    0   32   21.00000    1.24240  94.1%     -    0s
*   12    12               7      20.0000000    5.24444  73.8%  20.3    0s
H   27    12                      19.0000000    5.31022  72.1%  13.9    0s

Cutting planes:
  Gomory: 1
  Zero half: 15

Explored 101 nodes (1157 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%