Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:35 2012 Optimize a model with 713 rows, 119 columns and 1426 nonzeros Presolve removed 274 rows and 0 columns Presolve time: 0.00s Presolved: 439 rows, 119 columns, 1134 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.016926e+01, 292 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.16926 0 118 29.00000 40.16926 38.5% - 0s 0 0 39.79845 0 119 29.00000 39.79845 37.2% - 0s 0 0 39.54877 0 117 29.00000 39.54877 36.4% - 0s 0 0 39.36251 0 119 29.00000 39.36251 35.7% - 0s 0 0 39.25177 0 119 29.00000 39.25177 35.4% - 0s 0 0 39.18007 0 119 29.00000 39.18007 35.1% - 0s 0 0 39.14894 0 119 29.00000 39.14894 35.0% - 0s 0 0 39.08618 0 119 29.00000 39.08618 34.8% - 0s 0 0 39.03118 0 119 29.00000 39.03118 34.6% - 0s H 0 0 30.0000000 39.03118 30.1% - 0s 0 0 39.00712 0 119 30.00000 39.00712 30.0% - 0s 0 0 38.92953 0 119 30.00000 38.92953 29.8% - 0s 0 0 38.85159 0 119 30.00000 38.85159 29.5% - 0s 0 0 38.80839 0 118 30.00000 38.80839 29.4% - 0s H 0 0 31.0000000 38.80839 25.2% - 0s 0 0 38.76012 0 118 31.00000 38.76012 25.0% - 0s 0 0 38.68979 0 118 31.00000 38.68979 24.8% - 0s 0 0 38.65823 0 119 31.00000 38.65823 24.7% - 0s 0 0 38.64602 0 119 31.00000 38.64602 24.7% - 0s 0 0 38.64602 0 119 31.00000 38.64602 24.7% - 0s 0 2 38.64368 0 119 31.00000 38.64368 24.7% - 0s 611 199 35.26087 6 119 31.00000 35.73927 15.3% 27.3 5s * 1652 256 22 32.0000000 34.80000 8.75% 27.5 8s Cutting planes: Gomory: 5 Clique: 1 Zero half: 38 Explored 2302 nodes (57648 simplex iterations) in 9.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%