Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:15:39 2013 Optimize a model with 987 rows, 324 columns and 3078 nonzeros Presolve removed 281 rows and 171 columns Presolve time: 0.00s Presolved: 706 rows, 153 columns, 2237 nonzeros Variable types: 8 continuous, 145 integer (145 binary) Found heuristic solution: objective 5965.0000000 Root relaxation: objective 4.971216e+03, 16 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4971.21622 0 6 5965.00000 4971.21622 16.7% - 0s 0 0 4972.00000 0 10 5965.00000 4972.00000 16.6% - 0s H 0 0 5007.0000000 4972.00000 0.70% - 0s H 0 0 4994.0000000 4972.00000 0.44% - 0s H 0 0 4987.0000000 4972.00000 0.30% - 0s 0 0 4972.00000 0 11 4987.00000 4972.00000 0.30% - 0s 0 0 4972.00000 0 6 4987.00000 4972.00000 0.30% - 0s 0 0 4972.00000 0 12 4987.00000 4972.00000 0.30% - 0s 0 0 4972.00000 0 10 4987.00000 4972.00000 0.30% - 0s 0 0 4972.00000 0 19 4987.00000 4972.00000 0.30% - 0s 0 0 4972.63411 0 21 4987.00000 4972.63411 0.29% - 0s 0 0 4973.54218 0 22 4987.00000 4973.54218 0.27% - 0s 0 0 4973.77063 0 19 4987.00000 4973.77063 0.27% - 0s 0 0 4973.78678 0 21 4987.00000 4973.78678 0.26% - 0s 0 0 4973.94056 0 18 4987.00000 4973.94056 0.26% - 0s 0 0 4974.01952 0 17 4987.00000 4974.01952 0.26% - 0s 0 0 4974.04244 0 18 4987.00000 4974.04244 0.26% - 0s 0 0 4974.04305 0 20 4987.00000 4974.04305 0.26% - 0s H 0 0 4986.0000000 4974.04305 0.24% - 0s H 0 0 4985.0000000 4974.04305 0.22% - 0s 0 2 4975.55020 0 20 4985.00000 4975.55020 0.19% - 0s * 21 2 8 4984.0000000 4982.26879 0.03% 9.8 0s Cutting planes: Gomory: 1 Cover: 1 Implied bound: 3 MIR: 20 Mod-K: 1 Explored 24 nodes (429 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.984000000000e+03, best bound 4.984000000000e+03, gap 0.0%