Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:55 2012 Optimize a model with 149 rows, 131 columns and 501 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 149 rows, 129 columns, 499 nonzeros Variable types: 0 continuous, 129 integer (128 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 84 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 54 28.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.48148 0 55 23.00000 0.48148 97.9% - 0s H 0 0 22.0000000 0.48148 97.8% - 0s 0 0 1.00000 0 56 22.00000 1.00000 95.5% - 0s 0 0 1.00000 0 54 22.00000 1.00000 95.5% - 0s H 0 0 16.0000000 1.00000 93.8% - 0s H 0 0 14.0000000 1.00000 92.9% - 0s 0 2 1.00000 0 54 14.00000 1.00000 92.9% - 0s H 27 19 10.0000000 2.22638 77.7% 17.4 0s * 39 16 11 9.0000000 2.23481 75.2% 18.0 0s Cutting planes: Gomory: 2 Mod-K: 1 Explored 108 nodes (1860 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%