Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:20:30 2012

Optimize a model with 229 rows, 179 columns and 749 nonzeros
Presolve time: 0.00s
Presolved: 229 rows, 179 columns, 749 nonzeros
Variable types: 0 continuous, 179 integer (179 binary)
Found heuristic solution: objective 49.0000000

Root relaxation: objective 0.000000e+00, 95 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   63   49.00000    0.00000   100%     -    0s
H    0     0                      41.0000000    0.00000   100%     -    0s
H    0     0                      34.0000000    0.00000   100%     -    0s
     0     0    0.49206    0   64   34.00000    0.49206  98.6%     -    0s
H    0     0                      32.0000000    0.49206  98.5%     -    0s
     0     0    1.00000    0   67   32.00000    1.00000  96.9%     -    0s
H    0     0                      29.0000000    1.00000  96.6%     -    0s
H    0     0                      24.0000000    1.00000  95.8%     -    0s
     0     0    1.00000    0   65   24.00000    1.00000  95.8%     -    0s
H    0     0                      23.0000000    1.00000  95.7%     -    0s
     0     0    1.00000    0   63   23.00000    1.00000  95.7%     -    0s
     0     2    1.00000    0   63   23.00000    1.00000  95.7%     -    0s
*   31    30              18      21.0000000    2.85065  86.4%  28.9    0s
*   69    43              25      19.0000000    3.31903  82.5%  24.8    0s
*   99    50              18      18.0000000    5.30844  70.5%  23.9    0s

Cutting planes:
  Gomory: 3
  Mod-K: 1

Explored 1225 nodes (25280 simplex iterations) in 0.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%