Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:55 2012 Optimize a model with 301 rows, 321 columns and 1071 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 301 rows, 298 columns, 1048 nonzeros Variable types: 0 continuous, 298 integer (297 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 186 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 0 121 56.00000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.15203 0 123 29.00000 0.15203 99.5% - 0s H 0 0 25.0000000 0.15203 99.4% - 0s 0 0 0.77825 0 132 25.00000 0.77825 96.9% - 0s H 0 0 6.0000000 0.77825 87.0% - 0s H 0 0 4.0000000 0.77825 80.5% - 0s 0 0 0.77825 0 132 4.00000 0.77825 80.5% - 0s 0 2 0.77975 0 132 4.00000 0.77975 80.5% - 0s * 29 12 25 3.0000000 1.00000 66.7% 33.7 0s Cutting planes: Gomory: 4 Mod-K: 2 Explored 78 nodes (4704 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%