Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:12 2012 Optimize a model with 203 rows, 155 columns and 660 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 203 rows, 154 columns, 659 nonzeros Variable types: 0 continuous, 154 integer (153 binary) Found heuristic solution: objective 45.0000000 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 52 45.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.39099 0 54 39.00000 0.39099 99.0% - 0s 0 0 1.00623 0 56 39.00000 1.00623 97.4% - 0s 0 0 1.00648 0 57 39.00000 1.00648 97.4% - 0s 0 0 1.00648 0 57 39.00000 1.00648 97.4% - 0s H 0 0 38.0000000 1.00648 97.4% - 0s H 0 0 35.0000000 1.00648 97.1% - 0s H 0 0 31.0000000 1.00648 96.8% - 0s 0 2 1.01296 0 57 31.00000 1.01296 96.7% - 0s * 24 24 16 28.0000000 2.96033 89.4% 31.9 0s H 28 20 27.0000000 2.96033 89.0% 27.4 0s * 42 17 10 15.0000000 2.99571 80.0% 28.3 0s Cutting planes: Gomory: 3 Zero half: 1 Explored 157 nodes (3866 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%