Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:28 2012

Optimize a model with 321 rows, 335 columns and 1135 nonzeros
Presolve removed 0 rows and 24 columns
Presolve time: 0.00s
Presolved: 321 rows, 311 columns, 1111 nonzeros
Variable types: 0 continuous, 311 integer (310 binary)
Found heuristic solution: objective 58.0000000

Root relaxation: objective 0.000000e+00, 189 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  134   58.00000    0.00000   100%     -    0s
H    0     0                      36.0000000    0.00000   100%     -    0s
H    0     0                      29.0000000    0.00000   100%     -    0s
     0     0    0.34411    0  139   29.00000    0.34411  98.8%     -    0s
H    0     0                      22.0000000    0.34411  98.4%     -    0s
     0     0    0.91090    0  149   22.00000    0.91090  95.9%     -    0s
H    0     0                      18.0000000    0.91090  94.9%     -    0s
     0     0    0.91090    0  145   18.00000    0.91090  94.9%     -    0s
     0     0    0.91090    0  144   18.00000    0.91090  94.9%     -    0s
     0     2    0.92138    0  144   18.00000    0.92138  94.9%     -    0s
H   27    20                       6.0000000    1.79424  70.1%  25.2    0s
*   41     9               9       5.0000000    1.81491  63.7%  21.1    0s
*   54     8               5       4.0000000    2.03226  49.2%  22.9    0s

Cutting planes:
  Gomory: 4
  Zero half: 2

Explored 64 nodes (2048 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%