Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:29:13 2012 Optimize a model with 303 rows, 203 columns and 958 nonzeros Presolve time: 0.00s Presolved: 303 rows, 203 columns, 958 nonzeros Variable types: 0 continuous, 203 integer (203 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 0.000000e+00, 101 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 52 63.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.56000 0 54 55.00000 0.56000 99.0% - 0s H 0 0 54.0000000 0.56000 99.0% - 0s 0 0 0.83124 0 61 54.00000 0.83124 98.5% - 0s 0 0 0.88000 0 54 54.00000 0.88000 98.4% - 0s 0 0 0.88000 0 54 54.00000 0.88000 98.4% - 0s 0 0 0.88000 0 54 54.00000 0.88000 98.4% - 0s 0 2 0.88098 0 54 54.00000 0.88098 98.4% - 0s * 36 32 20 47.0000000 4.09375 91.3% 25.0 0s * 66 48 16 40.0000000 4.13636 89.7% 24.3 0s * 91 60 16 38.0000000 7.00000 81.6% 23.5 0s * 321 128 19 34.0000000 14.35556 57.8% 22.3 0s * 880 115 13 33.0000000 24.00000 27.3% 20.8 0s Cutting planes: Gomory: 1 Mod-K: 6 Explored 1327 nodes (26446 simplex iterations) in 0.84 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%