Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:12:19 2012 Optimize a model with 491 rows, 454 columns and 1679 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 491 rows, 434 columns, 1659 nonzeros Variable types: 0 continuous, 434 integer (433 binary) Found heuristic solution: objective 91.0000000 Root relaxation: objective 0.000000e+00, 239 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 0 184 91.00000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s 0 0 0.42096 0 185 73.00000 0.42096 99.4% - 0s H 0 0 52.0000000 0.42096 99.2% - 0s 0 0 1.00000 0 189 52.00000 1.00000 98.1% - 0s 0 0 1.00000 0 188 52.00000 1.00000 98.1% - 0s H 0 0 51.0000000 1.00000 98.0% - 0s 0 0 1.00000 0 187 51.00000 1.00000 98.0% - 0s H 0 0 34.0000000 1.00000 97.1% - 0s 0 0 1.00000 0 188 34.00000 1.00000 97.1% - 0s 0 0 1.00000 0 186 34.00000 1.00000 97.1% - 0s H 0 0 32.0000000 1.00000 96.9% - 0s H 0 0 31.0000000 1.00000 96.8% - 0s 0 2 1.00000 0 186 31.00000 1.00000 96.8% - 0s * 41 31 22 19.0000000 2.63108 86.2% 32.9 0s H 814 86 18.0000000 13.72727 23.7% 27.4 1s * 978 0 12 17.0000000 17.00000 0.0% 26.9 1s Cutting planes: Gomory: 3 Explored 979 nodes (27452 simplex iterations) in 1.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%