Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:56:54 2012 Optimize a model with 237 rows, 167 columns and 757 nonzeros Presolve time: 0.00s Presolved: 237 rows, 167 columns, 757 nonzeros Variable types: 0 continuous, 167 integer (167 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 0.000000e+00, 77 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 49 48.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s 0 0 0.74640 0 54 46.00000 0.74640 98.4% - 0s H 0 0 41.0000000 0.74640 98.2% - 0s 0 0 0.78231 0 51 41.00000 0.78231 98.1% - 0s 0 0 0.79602 0 51 41.00000 0.79602 98.1% - 0s H 0 0 36.0000000 0.79602 97.8% - 0s 0 0 0.81105 0 56 36.00000 0.81105 97.7% - 0s 0 0 0.83557 0 59 36.00000 0.83557 97.7% - 0s 0 0 0.83686 0 54 36.00000 0.83686 97.7% - 0s 0 0 0.85034 0 52 36.00000 0.85034 97.6% - 0s 0 0 0.86620 0 70 36.00000 0.86620 97.6% - 0s 0 0 0.88435 0 51 36.00000 0.88435 97.5% - 0s 0 0 0.88435 0 51 36.00000 0.88435 97.5% - 0s 0 2 0.91454 0 51 36.00000 0.91454 97.5% - 0s * 28 26 16 35.0000000 5.00741 85.7% 25.8 0s H 57 45 33.0000000 5.07535 84.6% 23.9 0s * 61 42 19 30.0000000 5.07535 83.1% 22.8 0s * 150 94 18 29.0000000 13.00000 55.2% 20.5 0s * 591 157 13 28.0000000 17.25641 38.4% 17.3 0s Cutting planes: Gomory: 1 Mod-K: 6 Explored 2384 nodes (34755 simplex iterations) in 1.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.800000000000e+01, best bound 2.800000000000e+01, gap 0.0%