Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:47:16 2012 Optimize a model with 273 rows, 183 columns and 863 nonzeros Presolve time: 0.00s Presolved: 273 rows, 183 columns, 863 nonzeros Variable types: 0 continuous, 183 integer (183 binary) Found heuristic solution: objective 64.0000000 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 47 64.00000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.78014 0 49 59.00000 0.78014 98.7% - 0s H 0 0 54.0000000 0.78014 98.6% - 0s 0 0 0.83688 0 49 54.00000 0.83688 98.5% - 0s 0 0 0.85106 0 49 54.00000 0.85106 98.4% - 0s 0 0 0.86525 0 49 54.00000 0.86525 98.4% - 0s 0 0 0.87943 0 49 54.00000 0.87943 98.4% - 0s 0 0 0.87943 0 49 54.00000 0.87943 98.4% - 0s 0 0 0.87943 0 49 54.00000 0.87943 98.4% - 0s 0 2 0.96754 0 49 54.00000 0.96754 98.2% - 0s * 29 28 19 38.0000000 4.13675 89.1% 28.6 0s * 82 60 16 37.0000000 9.55149 74.2% 25.6 0s * 423 186 13 36.0000000 17.14706 52.4% 22.1 0s * 440 190 15 35.0000000 17.25000 50.7% 22.2 0s * 503 180 10 34.0000000 18.00000 47.1% 22.2 0s * 680 165 13 33.0000000 21.57895 34.6% 21.6 0s Cutting planes: Gomory: 1 Zero half: 10 Explored 1327 nodes (25645 simplex iterations) in 0.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%