Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:28 2012 Optimize a model with 321 rows, 335 columns and 1135 nonzeros Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 321 rows, 307 columns, 1107 nonzeros Variable types: 0 continuous, 307 integer (306 binary) Found heuristic solution: objective 58.0000000 Root relaxation: objective 0.000000e+00, 208 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 0 136 58.00000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.29330 0 137 38.00000 0.29330 99.2% - 0s H 0 0 29.0000000 0.29330 99.0% - 0s 0 0 1.00000 0 139 29.00000 1.00000 96.6% - 0s H 0 0 27.0000000 1.00000 96.3% - 0s 0 0 1.00000 0 138 27.00000 1.00000 96.3% - 0s H 0 0 22.0000000 1.00000 95.5% - 0s H 0 0 20.0000000 1.00000 95.0% - 0s 0 0 1.00000 0 140 20.00000 1.00000 95.0% - 0s 0 0 1.00000 0 139 20.00000 1.00000 95.0% - 0s H 0 0 19.0000000 1.00000 94.7% - 0s 0 2 1.00000 0 139 19.00000 1.00000 94.7% - 0s H 27 27 9.0000000 1.00000 88.9% 28.6 0s * 39 21 24 8.0000000 1.00000 87.5% 25.7 0s * 66 19 16 7.0000000 1.00000 85.7% 25.4 0s * 81 20 10 6.0000000 1.00000 83.3% 25.2 0s Cutting planes: Gomory: 3 Explored 129 nodes (3800 simplex iterations) in 0.17 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%