Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:55 2012

Optimize a model with 121 rows, 93 columns and 393 nonzeros
Presolve time: 0.00s
Presolved: 121 rows, 93 columns, 393 nonzeros
Variable types: 0 continuous, 93 integer (93 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 0.000000e+00, 50 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   33   27.00000    0.00000   100%     -    0s
H    0     0                      20.0000000    0.00000   100%     -    0s
H    0     0                      18.0000000    0.00000   100%     -    0s
     0     0    0.68051    0   38   18.00000    0.68051  96.2%     -    0s
     0     0    0.79845    0   37   18.00000    0.79845  95.6%     -    0s
H    0     0                      17.0000000    0.79845  95.3%     -    0s
     0     0    0.80018    0   47   17.00000    0.80018  95.3%     -    0s
H    0     0                      15.0000000    0.80018  94.7%     -    0s
     0     2    0.81250    0   47   15.00000    0.81250  94.6%     -    0s
*   15    10               8      14.0000000    2.88889  79.4%  17.4    0s
*   63    16              11      13.0000000    5.57895  57.1%  11.4    0s
*   75    17               7      12.0000000    5.72727  52.3%  11.3    0s

Cutting planes:
  Gomory: 1
  Zero half: 4
  Mod-K: 2

Explored 143 nodes (1559 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%