Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:57:26 2012 Optimize a model with 387 rows, 385 columns and 1350 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 387 rows, 367 columns, 1332 nonzeros Variable types: 0 continuous, 367 integer (366 binary) Found heuristic solution: objective 83.0000000 Root relaxation: objective 0.000000e+00, 211 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 0 165 83.00000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s 0 0 0.27027 0 167 57.00000 0.27027 100% - 0s H 0 0 45.0000000 0.27027 99.4% - 0s 0 0 1.00024 0 171 45.00000 1.00024 97.8% - 0s H 0 0 36.0000000 1.00024 97.2% - 0s 0 0 1.00060 0 173 36.00000 1.00060 97.2% - 0s 0 0 1.00060 0 173 36.00000 1.00060 97.2% - 0s 0 2 1.00121 0 173 36.00000 1.00121 97.2% - 0s * 26 26 15 8.0000000 1.01157 87.4% 41.4 0s Cutting planes: Gomory: 4 Zero half: 5 Explored 391 nodes (12850 simplex iterations) in 0.49 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%