Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:54 2012 Optimize a model with 143 rows, 128 columns and 483 nonzeros Presolve removed 0 rows and 5 columns Presolve time: 0.00s Presolved: 143 rows, 123 columns, 478 nonzeros Variable types: 0 continuous, 123 integer (122 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 89 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 51 29.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.45098 0 52 19.00000 0.45098 97.6% - 0s H 0 0 18.0000000 0.45098 97.5% - 0s 0 0 1.00000 0 53 18.00000 1.00000 94.4% - 0s H 0 0 16.0000000 1.00000 93.8% - 0s 0 0 1.01051 0 54 16.00000 1.01051 93.7% - 0s 0 2 1.01170 0 54 16.00000 1.01170 93.7% - 0s * 30 19 20 11.0000000 2.17825 80.2% 17.1 0s * 51 25 14 10.0000000 2.24174 77.6% 16.9 0s * 82 23 10 9.0000000 3.78977 57.9% 18.8 0s Cutting planes: Gomory: 5 Explored 167 nodes (3142 simplex iterations) in 0.11 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%