Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:34 2012 Optimize a model with 716 rows, 119 columns and 1432 nonzeros Presolve removed 277 rows and 0 columns Presolve time: 0.00s Presolved: 439 rows, 119 columns, 1121 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 4.080189e+01, 294 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.80189 0 119 28.00000 40.80189 45.7% - 0s H 0 0 30.0000000 40.80189 36.0% - 0s 0 0 40.42653 0 117 30.00000 40.42653 34.8% - 0s 0 0 40.16651 0 117 30.00000 40.16651 33.9% - 0s 0 0 40.01082 0 118 30.00000 40.01082 33.4% - 0s 0 0 39.74226 0 116 30.00000 39.74226 32.5% - 0s H 0 0 31.0000000 39.74226 28.2% - 0s 0 0 39.66744 0 116 31.00000 39.66744 28.0% - 0s 0 0 39.62934 0 118 31.00000 39.62934 27.8% - 0s 0 0 39.59670 0 117 31.00000 39.59670 27.7% - 0s 0 0 39.52201 0 119 31.00000 39.52201 27.5% - 0s 0 0 39.48525 0 118 31.00000 39.48525 27.4% - 0s 0 0 39.37162 0 119 31.00000 39.37162 27.0% - 0s 0 0 39.33294 0 118 31.00000 39.33294 26.9% - 0s 0 0 39.31158 0 119 31.00000 39.31158 26.8% - 0s 0 0 39.31118 0 119 31.00000 39.31118 26.8% - 0s 0 0 39.31118 0 119 31.00000 39.31118 26.8% - 0s H 0 0 32.0000000 39.31118 22.8% - 0s 0 2 39.31117 0 119 32.00000 39.31117 22.8% - 0s * 24 14 10 33.0000000 39.09181 18.5% 42.3 0s H 35 12 35.0000000 38.88334 11.1% 37.7 0s Cutting planes: Clique: 3 Zero half: 46 Explored 189 nodes (8014 simplex iterations) in 0.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%