Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:17:00 2012 Optimize a model with 230 rows, 669 columns and 669 nonzeros Model has 458 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 2.67s Presolved: 230 rows, 644 columns, 644 nonzeros Variable types: 458 continuous, 186 integer (185 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 0 104.0000000 - - - 2s 0 0 0.00000 0 56 104.00000 0.00000 100% - 2s 0 0 0.00000 0 88 104.00000 0.00000 100% - 2s 0 0 0.00000 0 87 104.00000 0.00000 100% - 2s 0 2 0.00000 0 87 104.00000 0.00000 100% - 2s * 35 35 29 26.0000000 1.49587 94.2% 33.3 2s H 81 73 25.0000000 2.14702 91.4% 25.6 2s * 92 84 42 24.0000000 2.14702 91.1% 25.6 2s * 99 81 45 22.0000000 2.14702 90.2% 26.8 2s H 120 76 19.0000000 3.00000 84.2% 26.5 2s * 123 74 19 18.0000000 3.00000 83.3% 26.4 2s * 186 101 27 17.0000000 3.29973 80.6% 22.2 3s * 529 158 14 15.0000000 7.05803 52.9% 17.5 3s H 575 135 14.0000000 7.25765 48.2% 17.8 3s H 846 165 13.0000000 8.59684 33.9% 21.7 4s 1001 152 12.81818 25 87 13.00000 8.59684 33.9% 24.6 9s Explored 1327 nodes (37907 simplex iterations) in 9.94 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%