Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:29 2012 Optimize a model with 709 rows, 118 columns and 1418 nonzeros Presolve removed 275 rows and 0 columns Presolve time: 0.00s Presolved: 434 rows, 118 columns, 1106 nonzeros Variable types: 0 continuous, 118 integer (118 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 4.015493e+01, 283 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.15493 0 115 26.00000 40.15493 54.4% - 0s H 0 0 30.0000000 40.15493 33.8% - 0s 0 0 39.83417 0 116 30.00000 39.83417 32.8% - 0s 0 0 39.63138 0 115 30.00000 39.63138 32.1% - 0s H 0 0 32.0000000 39.63138 23.8% - 0s 0 0 39.46412 0 114 32.00000 39.46412 23.3% - 0s 0 0 39.33005 0 117 32.00000 39.33005 22.9% - 0s 0 0 39.09980 0 116 32.00000 39.09980 22.2% - 0s 0 0 38.97700 0 115 32.00000 38.97700 21.8% - 0s 0 0 38.93495 0 115 32.00000 38.93495 21.7% - 0s 0 0 38.85978 0 116 32.00000 38.85978 21.4% - 0s H 0 0 33.0000000 38.85978 17.8% - 0s 0 0 38.84844 0 116 33.00000 38.84844 17.7% - 0s 0 0 38.84844 0 116 33.00000 38.84844 17.7% - 0s 0 2 38.84687 0 116 33.00000 38.84687 17.7% - 0s * 448 39 9 34.0000000 36.07692 6.11% 29.5 0s Cutting planes: Clique: 3 Zero half: 34 Explored 524 nodes (15535 simplex iterations) in 0.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%