Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:26:34 2012 Optimize a model with 273 rows, 286 columns and 966 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 273 rows, 264 columns, 944 nonzeros Variable types: 0 continuous, 264 integer (263 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 0.000000e+00, 181 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 0 108 45.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.17851 0 110 23.00000 0.17851 99.2% - 0s H 0 0 18.0000000 0.17851 99.0% - 0s H 0 0 14.0000000 0.17851 98.7% - 0s 0 0 0.75619 0 115 14.00000 0.75619 94.6% - 0s 0 0 0.75619 0 116 14.00000 0.75619 94.6% - 0s 0 0 0.75619 0 116 14.00000 0.75619 94.6% - 0s 0 2 0.75688 0 115 14.00000 0.75688 94.6% - 0s H 27 14 5.0000000 1.00000 80.0% 31.5 0s Cutting planes: Gomory: 4 Zero half: 1 Mod-K: 1 Explored 135 nodes (4448 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%