Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:39:50 2012 Optimize a model with 151 rows, 379 columns and 379 nonzeros Model has 300 quadratic constraints Presolve time: 1.75s Presolved: 151 rows, 379 columns, 379 nonzeros Variable types: 300 continuous, 79 integer (79 binary) Root relaxation: objective 0.000000e+00, 39 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 73.0000000 - - - 1s 0 0 0.00000 0 63 73.00000 0.00000 100% - 1s 0 0 0.34002 0 74 73.00000 0.34002 100% - 1s 0 2 0.34839 0 74 73.00000 0.34839 100% - 1s H 47 47 32.0000000 2.48387 92.2% 24.5 1s * 82 67 23 30.0000000 2.49180 91.7% 26.0 1s H 158 124 29.0000000 6.46512 77.7% 30.9 1s * 188 140 21 28.0000000 6.61119 76.4% 30.0 2s 2696 1037 22.67742 38 231 28.00000 15.40000 45.0% 21.8 5s * 5377 1751 50 27.0000000 18.00000 33.3% 18.8 7s 7647 1912 22.33962 42 194 27.00000 19.70833 27.0% 17.9 10s 10806 1728 23.00000 40 211 27.00000 21.46154 20.5% 17.5 15s Explored 15346 nodes (263604 simplex iterations) in 19.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%