Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:10 2012 Optimize a model with 80 rows, 197 columns and 197 nonzeros Model has 158 quadratic constraints Presolve time: 0.92s Presolved: 80 rows, 197 columns, 197 nonzeros Variable types: 158 continuous, 39 integer (39 binary) Root relaxation: objective 0.000000e+00, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 39.0000000 - - - 0s 0 0 0.00000 0 37 39.00000 0.00000 100% - 0s 0 0 0.65385 0 38 39.00000 0.65385 98.3% - 0s 0 2 0.65812 0 38 39.00000 0.65812 98.3% - 0s * 18 18 11 22.0000000 3.43750 84.4% 29.3 0s * 19 17 12 20.0000000 3.43750 82.8% 28.0 0s * 37 29 13 19.0000000 3.60000 81.1% 26.4 0s H 54 29 17.0000000 5.72727 66.3% 23.4 0s * 55 24 13 16.0000000 5.72727 64.2% 23.1 0s * 128 23 8 15.0000000 8.85714 41.0% 20.1 1s Cutting planes: Gomory: 1 Explored 173 nodes (3841 simplex iterations) in 1.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%