Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:59:37 2012 Optimize a model with 213 rows, 619 columns and 619 nonzeros Model has 424 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 2.47s Presolved: 213 rows, 594 columns, 594 nonzeros Variable types: 424 continuous, 170 integer (169 binary) Root relaxation: objective 0.000000e+00, 75 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 103.0000000 - - - 2s 0 0 0.00000 0 4 103.00000 0.00000 100% - 2s 0 0 0.00000 0 30 103.00000 0.00000 100% - 2s 0 0 0.00000 0 4 103.00000 0.00000 100% - 2s 0 2 0.00000 0 133 103.00000 0.00000 100% - 2s * 32 30 20 16.0000000 1.44565 91.0% 59.8 2s H 440 157 15.0000000 7.23529 51.8% 25.7 3s * 449 102 11 13.0000000 7.28571 44.0% 25.6 3s Cutting planes: Explored 795 nodes (21176 simplex iterations) in 3.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%