Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:01:16 2012

Optimize a model with 287 rows, 199 columns and 914 nonzeros
Presolve time: 0.00s
Presolved: 287 rows, 199 columns, 914 nonzeros
Variable types: 0 continuous, 199 integer (199 binary)
Found heuristic solution: objective 63.0000000

Root relaxation: objective 0.000000e+00, 94 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   55   63.00000    0.00000   100%     -    0s
H    0     0                      48.0000000    0.00000   100%     -    0s
H    0     0                      47.0000000    0.00000   100%     -    0s
     0     0    0.60248    0   56   47.00000    0.60248  98.7%     -    0s
     0     0    1.04051    0   58   47.00000    1.04051  97.8%     -    0s
     0     0    1.05893    0   58   47.00000    1.05893  97.7%     -    0s
     0     0    1.05929    0   59   47.00000    1.05929  97.7%     -    0s
     0     0    1.05929    0   59   47.00000    1.05929  97.7%     -    0s
H    0     0                      45.0000000    1.05929  97.6%     -    0s
     0     2    1.09289    0   59   45.00000    1.09289  97.6%     -    0s
*   29    29              17      41.0000000    4.47036  89.1%  37.0    0s
*   61    48              20      36.0000000    5.38182  85.1%  32.1    0s
*   88    63              18      35.0000000    7.42595  78.8%  32.6    0s
H  136    93                      34.0000000    7.50944  77.9%  32.1    0s
*  221   144              14      33.0000000    9.45301  71.4%  30.9    0s
H  359   174                      31.0000000   13.93616  55.0%  29.8    0s

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

Explored 3059 nodes (71173 simplex iterations) in 2.48 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.100000000000e+01, best bound 3.100000000000e+01, gap 0.0%