Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:12 2012 Optimize a model with 150 rows, 452 columns and 452 nonzeros Model has 298 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 1.74s Presolved: 150 rows, 429 columns, 429 nonzeros Variable types: 298 continuous, 131 integer (130 binary) Root relaxation: objective 0.000000e+00, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 68.0000000 - - - 1s 0 0 0.00000 0 69 68.00000 0.00000 100% - 1s 0 0 0.00000 0 89 68.00000 0.00000 100% - 1s 0 0 0.00000 0 87 68.00000 0.00000 100% - 1s 0 2 0.00000 0 68 68.00000 0.00000 100% - 1s * 28 28 19 12.0000000 1.39286 88.4% 45.8 1s * 127 77 34 10.0000000 1.46429 85.4% 18.6 1s * 344 132 16 9.0000000 3.48315 61.3% 14.6 2s * 408 120 10 8.0000000 4.09091 48.9% 15.9 2s Cutting planes: Explored 1070 nodes (19992 simplex iterations) in 2.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%