Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:32 2012 Optimize a model with 179 rows, 535 columns and 535 nonzeros Model has 356 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 2.07s Presolved: 179 rows, 517 columns, 517 nonzeros Variable types: 356 continuous, 161 integer (160 binary) Root relaxation: objective 0.000000e+00, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 80.0000000 - - - 2s 0 0 0.00000 0 5 80.00000 0.00000 100% - 2s 0 0 0.00000 0 3 80.00000 0.00000 100% - 2s 0 0 0.00000 0 85 80.00000 0.00000 100% - 2s 0 2 0.00000 0 83 80.00000 0.00000 100% - 2s * 30 30 23 10.0000000 1.40206 86.0% 28.6 2s H 79 55 9.0000000 2.17241 75.9% 19.6 2s * 137 51 15 8.0000000 2.90000 63.7% 17.3 2s H 312 68 8.0000000 5.91429 26.1% 15.2 2s Cutting planes: Explored 575 nodes (8943 simplex iterations) in 2.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.999999998935e+00, best bound 7.999999998935e+00, gap 0.0%