Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:18:53 2012 Optimize a model with 235 rows, 680 columns and 680 nonzeros Model has 468 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 2.73s Presolved: 235 rows, 662 columns, 662 nonzeros Variable types: 468 continuous, 194 integer (193 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 113.0000000 - - - 2s 0 0 0.00000 0 3 113.00000 0.00000 100% - 2s 0 0 0.00000 0 7 113.00000 0.00000 100% - 2s 0 0 0.00000 0 121 113.00000 0.00000 100% - 2s 0 2 0.00000 0 121 113.00000 0.00000 100% - 2s H 27 27 16.0000000 0.88889 94.4% 44.4 2s * 28 26 20 14.0000000 0.88889 93.7% 43.5 2s * 100 62 15 13.0000000 2.49635 80.8% 32.0 3s * 425 166 28 12.0000000 6.33333 47.2% 21.7 3s * 637 202 31 11.0000000 7.00000 36.4% 30.6 4s 749 198 cutoff 26 11.00000 7.00000 36.4% 39.0 5s Explored 1124 nodes (49681 simplex iterations) in 6.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%