Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:04 2012 Optimize a model with 177 rows, 106 columns and 546 nonzeros Presolve time: 0.00s Presolved: 177 rows, 106 columns, 546 nonzeros Variable types: 0 continuous, 106 integer (106 binary) Found heuristic solution: objective 51.0000000 Found heuristic solution: objective 45.0000000 Root relaxation: objective 0.000000e+00, 35 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 18 45.00000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s 0 0 0.75000 0 19 44.00000 0.75000 98.3% - 0s 0 0 1.66667 0 21 44.00000 1.66667 96.2% - 0s 0 0 1.66667 0 21 44.00000 1.66667 96.2% - 0s 0 0 1.83333 0 21 44.00000 1.83333 95.8% - 0s 0 0 1.83333 0 23 44.00000 1.83333 95.8% - 0s H 0 0 39.0000000 1.83333 95.3% - 0s 0 0 1.91667 0 22 39.00000 1.91667 95.1% - 0s 0 0 1.91667 0 24 39.00000 1.91667 95.1% - 0s 0 0 1.91667 0 21 39.00000 1.91667 95.1% - 0s 0 0 2.00000 0 21 39.00000 2.00000 94.9% - 0s 0 0 2.00000 0 22 39.00000 2.00000 94.9% - 0s 0 0 2.00000 0 22 39.00000 2.00000 94.9% - 0s 0 2 2.00000 0 22 39.00000 2.00000 94.9% - 0s * 181 69 10 38.0000000 14.46154 61.9% 20.0 0s * 400 102 12 37.0000000 22.00000 40.5% 17.3 0s * 406 101 13 36.0000000 22.00000 38.9% 17.2 0s Cutting planes: Gomory: 2 Zero half: 6 Explored 1309 nodes (18310 simplex iterations) in 0.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%