Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:58:17 2012 Optimize a model with 193 rows, 577 columns and 577 nonzeros Model has 384 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 2.25s Presolved: 193 rows, 555 columns, 555 nonzeros Variable types: 384 continuous, 171 integer (170 binary) Root relaxation: objective 0.000000e+00, 69 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 91.0000000 - - - 2s 0 0 0.00000 0 4 91.00000 0.00000 100% - 2s 0 0 0.00000 0 51 91.00000 0.00000 100% - 2s 0 0 0.00000 0 66 91.00000 0.00000 100% - 2s 0 2 0.00000 0 53 91.00000 0.00000 100% - 2s * 34 34 26 14.0000000 0.94583 93.2% 36.5 2s H 81 33 13.0000000 1.58209 87.8% 20.7 2s H 101 53 12.0000000 1.58209 86.8% 18.5 2s * 101 45 29 10.0000000 1.58209 84.2% 18.6 2s * 108 41 33 9.0000000 1.58209 82.4% 17.9 2s H 177 63 9.0000000 3.00000 66.7% 18.1 2s Cutting planes: Explored 1216 nodes (23687 simplex iterations) in 3.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.999999998876e+00, best bound 8.999999998876e+00, gap 0.0%