Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:50 2012 Optimize a model with 702 rows, 119 columns and 1404 nonzeros Presolve removed 268 rows and 0 columns Presolve time: 0.00s Presolved: 434 rows, 119 columns, 1091 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 4.075476e+01, 282 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.75476 0 117 28.00000 40.75476 45.6% - 0s 0 0 40.40720 0 116 28.00000 40.40720 44.3% - 0s H 0 0 29.0000000 40.40720 39.3% - 0s 0 0 40.27220 0 117 29.00000 40.27220 38.9% - 0s H 0 0 31.0000000 40.27220 29.9% - 0s 0 0 40.20523 0 117 31.00000 40.20523 29.7% - 0s 0 0 40.10146 0 117 31.00000 40.10146 29.4% - 0s 0 0 39.96496 0 118 31.00000 39.96496 28.9% - 0s 0 0 39.88640 0 117 31.00000 39.88640 28.7% - 0s 0 0 39.77867 0 117 31.00000 39.77867 28.3% - 0s 0 0 39.65447 0 118 31.00000 39.65447 27.9% - 0s 0 0 39.60852 0 114 31.00000 39.60852 27.8% - 0s 0 0 39.49925 0 114 31.00000 39.49925 27.4% - 0s H 0 0 32.0000000 39.49925 23.4% - 0s 0 0 39.41030 0 115 32.00000 39.41030 23.2% - 0s 0 0 39.38463 0 116 32.00000 39.38463 23.1% - 0s 0 0 39.32279 0 116 32.00000 39.32279 22.9% - 0s 0 0 39.26773 0 117 32.00000 39.26773 22.7% - 0s 0 0 39.21151 0 117 32.00000 39.21151 22.5% - 0s 0 0 39.15632 0 118 32.00000 39.15632 22.4% - 0s 0 0 39.14374 0 118 32.00000 39.14374 22.3% - 0s 0 0 39.14374 0 118 32.00000 39.14374 22.3% - 0s 0 2 39.14231 0 118 32.00000 39.14231 22.3% - 0s H 273 75 33.0000000 37.09091 12.4% 33.0 0s Cutting planes: Clique: 4 Zero half: 56 Explored 960 nodes (28198 simplex iterations) in 1.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%