Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:22:25 2012 Optimize a model with 148 rows, 363 columns and 363 nonzeros Model has 294 quadratic constraints Presolve time: 1.71s Presolved: 148 rows, 363 columns, 363 nonzeros Variable types: 294 continuous, 69 integer (69 binary) Root relaxation: objective 0.000000e+00, 34 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 75.0000000 - - - 1s 0 0 0.00000 0 37 75.00000 0.00000 100% - 1s 0 0 0.06831 0 68 75.00000 0.06831 100% - 1s 0 2 0.10344 0 68 75.00000 0.10344 100% - 1s H 46 46 35.0000000 2.07143 94.1% 32.8 1s H 48 46 34.0000000 2.07143 93.9% 31.9 1s H 112 89 32.0000000 4.10000 87.2% 35.0 1s * 149 105 20 31.0000000 4.34615 86.0% 34.0 1s * 154 100 22 30.0000000 4.34615 85.5% 33.2 1s * 494 200 16 27.0000000 11.76471 56.4% 30.3 2s 3078 432 23.00536 36 203 27.00000 21.48539 20.4% 21.7 5s * 5155 1 45 26.0000000 26.00000 0.0% 19.1 6s Explored 5156 nodes (98962 simplex iterations) in 6.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%