Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:11:14 2012 Optimize a model with 603 rows, 536 columns and 2041 nonzeros Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 603 rows, 517 columns, 2022 nonzeros Variable types: 0 continuous, 517 integer (516 binary) Found heuristic solution: objective 116.0000000 Root relaxation: objective 0.000000e+00, 316 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 208 116.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s 0 0 0.29771 0 210 80.00000 0.29771 100% - 0s H 0 0 70.0000000 0.29771 100% - 0s 0 0 0.92220 0 215 70.00000 0.92220 98.7% - 0s H 0 0 46.0000000 0.92220 98.0% - 0s 0 0 0.92260 0 218 46.00000 0.92260 98.0% - 0s 0 0 0.92260 0 217 46.00000 0.92260 98.0% - 0s 0 2 0.92267 0 216 46.00000 0.92267 98.0% - 0s H 45 45 43.0000000 1.00000 97.7% 60.1 0s H 81 78 33.0000000 1.00000 97.0% 41.3 0s * 86 69 53 32.0000000 1.00000 96.9% 40.5 0s * 117 68 18 26.0000000 1.00000 96.2% 39.5 0s 1812 154 24.56831 20 232 26.00000 20.00000 23.1% 35.6 5s * 2245 43 23 25.0000000 23.02857 7.89% 33.2 6s Cutting planes: Gomory: 10 Zero half: 2 Explored 2289 nodes (76074 simplex iterations) in 6.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%