Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:04 2012 Optimize a model with 133 rows, 100 columns and 430 nonzeros Presolve time: 0.00s Presolved: 133 rows, 100 columns, 430 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 58 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 34 29.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.60870 0 36 23.00000 0.60870 97.4% - 0s 0 0 0.66667 0 37 23.00000 0.66667 97.1% - 0s 0 0 0.66667 0 37 23.00000 0.66667 97.1% - 0s 0 0 0.66667 0 37 23.00000 0.66667 97.1% - 0s H 0 0 20.0000000 0.66667 96.7% - 0s H 0 0 19.0000000 0.66667 96.5% - 0s 0 2 0.66667 0 37 19.00000 0.66667 96.5% - 0s * 20 20 13 17.0000000 2.97021 82.5% 18.9 0s H 27 17 16.0000000 3.02410 81.1% 16.6 0s * 33 21 7 15.0000000 3.02410 79.8% 17.5 0s * 61 20 11 14.0000000 5.57792 60.2% 14.1 0s * 127 7 6 12.0000000 9.00000 25.0% 13.2 0s Cutting planes: Gomory: 1 Zero half: 3 Explored 137 nodes (1957 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%