Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:03:05 2012 Optimize a model with 205 rows, 607 columns and 607 nonzeros Model has 408 quadratic constraints Presolve removed 0 rows and 21 columns Presolve time: 2.38s Presolved: 205 rows, 586 columns, 586 nonzeros Variable types: 408 continuous, 178 integer (177 binary) Root relaxation: objective 0.000000e+00, 73 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 95.0000000 - - - 2s 0 0 0.00000 0 40 95.00000 0.00000 100% - 2s 0 0 0.00000 0 14 95.00000 0.00000 100% - 2s 0 0 0.00000 0 105 95.00000 0.00000 100% - 2s 0 2 0.00000 0 104 95.00000 0.00000 100% - 2s H 27 27 23.0000000 0.52439 97.7% 52.8 2s * 44 38 26 14.0000000 0.52439 96.3% 38.1 2s * 74 40 14 13.0000000 2.85187 78.1% 32.3 2s * 114 50 19 12.0000000 2.86375 76.1% 25.1 2s * 141 23 8 8.0000000 3.90125 51.2% 23.2 2s H 177 11 8.0000000 5.73793 28.3% 23.1 2s Cutting planes: Explored 225 nodes (6225 simplex iterations) in 2.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.999999998704e+00, best bound 7.999999998704e+00, gap 0.0%