Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:09:18 2012 Optimize a model with 479 rows, 445 columns and 1640 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 479 rows, 425 columns, 1620 nonzeros Variable types: 0 continuous, 425 integer (424 binary) Found heuristic solution: objective 82.0000000 Root relaxation: objective 0.000000e+00, 240 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 0 177 82.00000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s 0 0 0.27758 0 179 67.00000 0.27758 100% - 0s H 0 0 66.0000000 0.27758 100% - 0s 0 0 0.92124 0 183 66.00000 0.92124 98.6% - 0s H 0 0 51.0000000 0.92124 98.2% - 0s H 0 0 40.0000000 0.92124 97.7% - 0s 0 0 0.92290 0 185 40.00000 0.92290 97.7% - 0s 0 0 0.92290 0 185 40.00000 0.92290 97.7% - 0s H 0 0 37.0000000 0.92290 97.5% - 0s 0 2 0.93014 0 185 37.00000 0.93014 97.5% - 0s H 27 27 33.0000000 2.08226 93.7% 33.1 0s * 52 41 28 17.0000000 2.08226 87.8% 25.6 0s * 121 62 24 16.0000000 4.12548 74.2% 24.7 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 1085 nodes (28531 simplex iterations) in 1.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%