Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:07:51 2012 Optimize a model with 306 rows, 306 columns and 1156 nonzeros Presolve removed 3 rows and 51 columns Presolve time: 0.00s Presolved: 303 rows, 255 columns, 1105 nonzeros Variable types: 0 continuous, 255 integer (255 binary) Found heuristic solution: objective 12.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 342 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 28 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 44 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 44 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 45 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 28 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 28 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 28 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 28 3.00000 2.00000 33.3% - 0s 0 2 2.00000 0 28 3.00000 2.00000 33.3% - 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 9 nodes (7591 simplex iterations) in 0.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%