Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:11 2012 Optimize a model with 171 rows, 143 columns and 568 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 171 rows, 142 columns, 567 nonzeros Variable types: 0 continuous, 142 integer (141 binary) Found heuristic solution: objective 41.0000000 Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 87 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 54 38.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.46729 0 56 28.00000 0.46729 98.3% - 0s H 0 0 27.0000000 0.46729 98.3% - 0s 0 0 0.97200 0 59 27.00000 0.97200 96.4% - 0s H 0 0 24.0000000 0.97200 96.0% - 0s 0 0 0.97694 0 59 24.00000 0.97694 95.9% - 0s 0 0 0.97694 0 59 24.00000 0.97694 95.9% - 0s H 0 0 21.0000000 0.97694 95.3% - 0s H 0 0 20.0000000 0.97694 95.1% - 0s 0 2 1.03877 0 59 20.00000 1.03877 94.8% - 0s * 17 17 13 12.0000000 3.14872 73.8% 25.3 0s * 81 19 11 11.0000000 7.56250 31.2% 19.1 0s * 92 13 8 10.0000000 7.57143 24.3% 18.9 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 114 nodes (2224 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%