Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:07:55 2012 Optimize a model with 420 rows, 420 columns and 1600 nonzeros Presolve removed 1 rows and 20 columns Presolve time: 0.00s Presolved: 419 rows, 400 columns, 1580 nonzeros Variable types: 0 continuous, 400 integer (400 binary) Found heuristic solution: objective 7.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 348 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 38 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 60 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 59 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 60 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 59 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 60 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 38 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 38 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 59 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 59 3.00000 2.00000 33.3% - 0s 0 2 2.00000 0 59 3.00000 2.00000 33.3% - 0s Cutting planes: Gomory: 1 Explored 8 nodes (14114 simplex iterations) in 0.48 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%