Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:10:47 2012 Optimize a model with 1225 rows, 1260 columns and 4795 nonzeros Presolve removed 3 rows and 105 columns Presolve time: 0.02s Presolved: 1222 rows, 1155 columns, 4690 nonzeros Variable types: 0 continuous, 1155 integer (1155 binary) Found heuristic solution: objective 17.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 1123 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 52 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 52 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 86 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 86 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 86 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 86 3.00000 2.00000 33.3% - 0s 0 0 2.00000 0 86 3.00000 2.00000 33.3% - 0s 0 2 2.00000 0 86 3.00000 2.00000 33.3% - 0s Cutting planes: Gomory: 7 Explored 8 nodes (28289 simplex iterations) in 1.81 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%