Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:06 2012 Optimize a model with 81 rows, 65 columns and 265 nonzeros Presolve time: 0.00s Presolved: 81 rows, 65 columns, 265 nonzeros Variable types: 0 continuous, 65 integer (65 binary) Found heuristic solution: objective 17.0000000 Root relaxation: objective 0.000000e+00, 36 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 24 17.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.50000 0 25 13.00000 0.50000 96.2% - 0s H 0 0 12.0000000 0.50000 95.8% - 0s 0 0 0.54545 0 26 12.00000 0.54545 95.5% - 0s 0 0 0.58651 0 27 12.00000 0.58651 95.1% - 0s 0 0 0.58651 0 27 12.00000 0.58651 95.1% - 0s H 0 0 11.0000000 0.58651 94.7% - 0s H 0 0 9.0000000 0.58651 93.5% - 0s 0 2 0.76446 0 27 9.00000 0.76446 91.5% - 0s * 4 4 3 7.0000000 2.55245 63.5% 25.0 0s * 17 3 6 6.0000000 2.64286 56.0% 12.4 0s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 2 Explored 23 nodes (353 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%