Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:23 2012 Optimize a model with 141 rows, 106 columns and 456 nonzeros Presolve time: 0.00s Presolved: 141 rows, 106 columns, 456 nonzeros Variable types: 0 continuous, 106 integer (106 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 53 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 35 29.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.51607 0 36 20.00000 0.51607 97.4% - 0s H 0 0 19.0000000 0.51607 97.3% - 0s 0 0 1.00000 0 38 19.00000 1.00000 94.7% - 0s H 0 0 18.0000000 1.00000 94.4% - 0s 0 0 1.00000 0 35 18.00000 1.00000 94.4% - 0s H 0 0 16.0000000 1.00000 93.7% - 0s 0 2 1.00000 0 35 16.00000 1.00000 93.7% - 0s * 15 12 9 15.0000000 3.00000 80.0% 32.2 0s * 40 12 5 13.0000000 6.00000 53.8% 27.2 0s Cutting planes: Gomory: 2 Zero half: 2 Explored 70 nodes (2039 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%