Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:23:31 2012

Optimize a model with 223 rows, 182 columns and 737 nonzeros
Presolve time: 0.00s
Presolved: 223 rows, 182 columns, 737 nonzeros
Variable types: 0 continuous, 182 integer (182 binary)
Found heuristic solution: objective 52.0000000

Root relaxation: objective 0.000000e+00, 108 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   70   52.00000    0.00000   100%     -    0s
H    0     0                      36.0000000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
     0     0    0.41234    0   72   30.00000    0.41234  98.6%     -    0s
H    0     0                      28.0000000    0.41234  98.5%     -    0s
     0     0    0.83569    0   73   28.00000    0.83569  97.0%     -    0s
H    0     0                      27.0000000    0.83569  96.9%     -    0s
     0     0    0.84086    0   76   27.00000    0.84086  96.9%     -    0s
     0     0    0.84086    0   76   27.00000    0.84086  96.9%     -    0s
H    0     0                      24.0000000    0.84086  96.5%     -    0s
H    0     0                      23.0000000    0.84086  96.3%     -    0s
     0     2    0.92720    0   76   23.00000    0.92720  96.0%     -    0s
*   28    22              22      18.0000000    3.06310  83.0%  21.9    0s
*   47    30              12      17.0000000    3.14197  81.5%  23.0    0s
*   54    29              14      16.0000000    3.14197  80.4%  21.2    0s
*  116    43              14      15.0000000    6.60000  56.0%  21.1    0s

Cutting planes:
  Gomory: 3
  Zero half: 1
  Mod-K: 2

Explored 335 nodes (6004 simplex iterations) in 0.24 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%