Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:32:41 2012 Optimize a model with 511 rows, 473 columns and 1748 nonzeros Presolve removed 0 rows and 14 columns Presolve time: 0.00s Presolved: 511 rows, 459 columns, 1734 nonzeros Variable types: 0 continuous, 459 integer (458 binary) Found heuristic solution: objective 107.0000000 Root relaxation: objective 0.000000e+00, 247 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 0 195 107.00000 0.00000 100% - 0s H 0 0 95.0000000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s 0 0 0.47410 0 196 61.00000 0.47410 99.2% - 0s H 0 0 57.0000000 0.47410 99.2% - 0s 0 0 1.00000 0 200 57.00000 1.00000 98.2% - 0s H 0 0 51.0000000 1.00000 98.0% - 0s 0 0 1.00000 0 197 51.00000 1.00000 98.0% - 0s 0 0 1.00000 0 199 51.00000 1.00000 98.0% - 0s 0 0 1.00000 0 197 51.00000 1.00000 98.0% - 0s H 0 0 49.0000000 1.00000 98.0% - 0s H 0 0 47.0000000 1.00000 97.9% - 0s H 0 0 46.0000000 1.00000 97.8% - 0s 0 2 1.00000 0 197 46.00000 1.00000 97.8% - 0s H 27 27 30.0000000 1.00000 96.7% 60.8 0s H 54 32 18.0000000 1.00000 94.4% 44.5 0s H 143 85 17.0000000 1.00000 94.1% 46.9 0s Cutting planes: Gomory: 3 Mod-K: 4 Explored 1182 nodes (40094 simplex iterations) in 1.75 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%