Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:53:33 2012 Optimize a model with 193 rows, 569 columns and 569 nonzeros Model has 384 quadratic constraints Presolve removed 0 rows and 26 columns Presolve time: 2.24s Presolved: 193 rows, 543 columns, 543 nonzeros Variable types: 384 continuous, 159 integer (158 binary) Root relaxation: objective 0.000000e+00, 69 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 89.0000000 - - - 2s 0 0 0.00000 0 47 89.00000 0.00000 100% - 2s 0 0 0.00000 0 83 89.00000 0.00000 100% - 2s 0 0 0.00000 0 77 89.00000 0.00000 100% - 2s 0 2 0.00000 0 77 89.00000 0.00000 100% - 2s * 33 32 26 17.0000000 1.06773 93.7% 34.8 2s H 50 35 16.0000000 1.94467 87.8% 32.6 2s * 92 73 37 15.0000000 1.94467 87.0% 23.9 2s * 156 78 20 14.0000000 2.40126 82.8% 20.6 2s H 391 105 13.0000000 4.65034 64.2% 16.0 2s * 772 183 34 12.0000000 6.91852 42.3% 26.4 3s * 796 163 30 11.0000000 6.91852 37.1% 26.3 3s Explored 921 nodes (26764 simplex iterations) in 4.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%