Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:18 2012

Optimize a model with 175 rows, 127 columns and 562 nonzeros
Presolve time: 0.00s
Presolved: 175 rows, 127 columns, 562 nonzeros
Variable types: 0 continuous, 127 integer (127 binary)
Found heuristic solution: objective 46.0000000

Root relaxation: objective 0.000000e+00, 61 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   40   46.00000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
     0     0    0.83333    0   42   28.00000    0.83333  97.0%     -    0s
     0     0    0.96318    0   43   28.00000    0.96318  96.6%     -    0s
     0     0    0.96817    0   44   28.00000    0.96817  96.5%     -    0s
     0     0    0.96817    0   44   28.00000    0.96817  96.5%     -    0s
     0     2    0.97004    0   44   28.00000    0.97004  96.5%     -    0s
*   24    20              15      20.0000000    3.49091  82.5%  21.0    0s
*  111    38              13      19.0000000    7.71429  59.4%  19.9    0s

Cutting planes:
  Gomory: 1
  Mod-K: 6

Explored 335 nodes (5610 simplex iterations) in 0.17 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%