Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:25 2012 Optimize a model with 357 rows, 357 columns and 1247 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 357 rows, 339 columns, 1229 nonzeros Variable types: 0 continuous, 339 integer (338 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 210 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 0 144 70.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.38194 0 145 38.00000 0.38194 99.0% - 0s H 0 0 34.0000000 0.38194 98.9% - 0s 0 0 1.00000 0 146 34.00000 1.00000 97.1% - 0s H 0 0 26.0000000 1.00000 96.2% - 0s 0 0 1.00000 0 150 26.00000 1.00000 96.2% - 0s 0 0 1.00000 0 149 26.00000 1.00000 96.2% - 0s H 0 0 21.0000000 1.00000 95.2% - 0s 0 2 1.00000 0 149 21.00000 1.00000 95.2% - 0s * 38 38 23 9.0000000 1.06535 88.2% 37.0 0s * 40 28 24 8.0000000 1.06535 86.7% 35.4 0s Cutting planes: Gomory: 4 Zero half: 2 Mod-K: 1 Explored 488 nodes (16351 simplex iterations) in 0.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%