Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:15:28 2012 Optimize a model with 275 rows, 188 columns and 873 nonzeros Presolve time: 0.00s Presolved: 275 rows, 188 columns, 873 nonzeros Variable types: 0 continuous, 188 integer (188 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 0.000000e+00, 91 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 51 65.00000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s 0 0 0.81837 0 53 53.00000 0.81837 98.5% - 0s 0 0 0.84520 0 53 53.00000 0.84520 98.4% - 0s 0 0 0.88545 0 53 53.00000 0.88545 98.3% - 0s 0 0 0.89886 0 53 53.00000 0.89886 98.3% - 0s 0 0 0.91228 0 53 53.00000 0.91228 98.3% - 0s 0 0 0.91228 0 53 53.00000 0.91228 98.3% - 0s 0 0 0.91228 0 53 53.00000 0.91228 98.3% - 0s 0 2 0.94269 0 53 53.00000 0.94269 98.2% - 0s H 27 27 47.0000000 4.55742 90.3% 27.0 0s * 29 29 20 43.0000000 4.55742 89.4% 26.2 0s * 33 28 22 42.0000000 4.55742 89.1% 23.6 0s * 88 59 17 37.0000000 8.50877 77.0% 23.3 0s * 179 119 19 36.0000000 11.25000 68.8% 23.8 0s * 204 129 15 35.0000000 11.41026 67.4% 23.1 0s * 274 131 13 34.0000000 13.57143 60.1% 21.3 0s * 306 127 14 31.0000000 14.28571 53.9% 22.4 0s * 806 97 13 30.0000000 23.50000 21.7% 19.0 0s Cutting planes: Gomory: 1 Zero half: 9 Explored 1060 nodes (19048 simplex iterations) in 0.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%