Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:21:38 2012 Optimize a model with 229 rows, 670 columns and 670 nonzeros Model has 456 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 2.65s Presolved: 229 rows, 645 columns, 645 nonzeros Variable types: 456 continuous, 189 integer (188 binary) Root relaxation: objective 0.000000e+00, 81 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 116.0000000 - - - 2s 0 0 0.00000 0 87 116.00000 0.00000 100% - 2s 0 0 0.00000 0 107 116.00000 0.00000 100% - 2s 0 0 0.00000 0 87 116.00000 0.00000 100% - 2s 0 2 0.00000 0 165 116.00000 0.00000 100% - 2s H 46 46 20.0000000 2.36124 88.2% 36.3 2s * 56 54 30 17.0000000 2.36124 86.1% 31.6 2s * 91 66 15 16.0000000 2.38511 85.1% 26.0 2s * 129 96 29 15.0000000 3.12903 79.1% 22.8 2s * 334 135 11 14.0000000 5.11193 63.5% 25.0 3s Cutting planes: Explored 1544 nodes (38747 simplex iterations) in 4.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%