Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:13 2012 Optimize a model with 137 rows, 122 columns and 462 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 137 rows, 121 columns, 461 nonzeros Variable types: 0 continuous, 121 integer (120 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 0.000000e+00, 105 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 50 24.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.52900 0 51 20.00000 0.52900 97.4% - 0s H 0 0 19.0000000 0.52900 97.2% - 0s H 0 0 17.0000000 0.52900 96.9% - 0s 0 0 1.06647 0 55 17.00000 1.06647 93.7% - 0s 0 0 1.06647 0 53 17.00000 1.06647 93.7% - 0s H 0 0 16.0000000 1.06647 93.3% - 0s 0 0 1.06647 0 53 16.00000 1.06647 93.3% - 0s H 0 0 14.0000000 1.06647 92.4% - 0s H 0 0 12.0000000 1.06647 91.1% - 0s H 0 0 9.0000000 1.06647 88.2% - 0s 0 2 1.11053 0 53 9.00000 1.11053 87.7% - 0s * 22 12 17 7.0000000 1.98261 71.7% 17.2 0s * 36 6 7 6.0000000 3.80642 36.6% 18.6 0s Cutting planes: Gomory: 3 Zero half: 2 Explored 43 nodes (1126 simplex iterations) in 0.07 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%