Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:36 2012 Optimize a model with 135 rows, 118 columns and 453 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 135 rows, 117 columns, 452 nonzeros Variable types: 0 continuous, 117 integer (116 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 79 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 49 30.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.53644 0 50 19.00000 0.53644 97.2% - 0s H 0 0 15.0000000 0.53644 96.4% - 0s H 0 0 12.0000000 0.53644 95.5% - 0s 0 0 1.25926 0 52 12.00000 1.25926 89.5% - 0s H 0 0 11.0000000 1.25926 88.6% - 0s 0 0 1.46558 0 54 11.00000 1.46558 86.7% - 0s 0 0 1.46558 0 54 11.00000 1.46558 86.7% - 0s 0 2 1.47184 0 54 11.00000 1.47184 86.6% - 0s * 20 18 13 10.0000000 3.29750 67.0% 16.8 0s * 49 18 8 7.0000000 4.38776 37.3% 15.1 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 78 nodes (1458 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%