Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:24 2012

Optimize a model with 163 rows, 117 columns and 522 nonzeros
Presolve time: 0.00s
Presolved: 163 rows, 117 columns, 522 nonzeros
Variable types: 0 continuous, 117 integer (117 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 0.000000e+00, 69 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   36   36.00000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
H    0     0                      29.0000000    0.00000   100%     -    0s
     0     0    0.61765    0   38   29.00000    0.61765  97.9%     -    0s
     0     0    0.73529    0   38   29.00000    0.73529  97.5%     -    0s
H    0     0                      24.0000000    0.73529  96.9%     -    0s
     0     0    0.83227    0   50   24.00000    0.83227  96.5%     -    0s
     0     0    0.88235    0   38   24.00000    0.88235  96.3%     -    0s
     0     0    0.94118    0   38   24.00000    0.94118  96.1%     -    0s
     0     0    0.95845    0   48   24.00000    0.95845  96.0%     -    0s
H    0     0                      23.0000000    0.95845  95.8%     -    0s
     0     2    0.99196    0   48   23.00000    0.99196  95.7%     -    0s
*   25    17              11      22.0000000    3.17647  85.6%  21.4    0s
*  152    70              19      21.0000000    9.12500  56.5%  16.2    0s
*  234    81              14      20.0000000   10.33333  48.3%  14.8    0s
*  262    67              13      19.0000000   10.80000  43.2%  14.3    0s

Cutting planes:
  Gomory: 1
  Mod-K: 7

Explored 628 nodes (8246 simplex iterations) in 0.19 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%