Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:54:44 2012 Optimize a model with 278 rows, 777 columns and 777 nonzeros Model has 554 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 3.23s Presolved: 278 rows, 762 columns, 762 nonzeros Variable types: 554 continuous, 208 integer (207 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 0 126.0000000 - - - 3s 0 0 0.00000 0 5 126.00000 0.00000 100% - 3s 0 0 0.00000 0 105 126.00000 0.00000 100% - 3s 0 0 0.00000 0 169 126.00000 0.00000 100% - 3s 0 2 0.00000 0 169 126.00000 0.00000 100% - 3s H 54 53 28.0000000 3.20870 88.5% 34.7 3s * 123 53 20 22.0000000 3.22222 85.4% 25.3 3s H 193 78 20.0000000 5.33155 73.3% 23.6 3s 606 190 11.00000 15 462 20.00000 11.00000 45.0% 30.4 5s * 2092 328 45 19.0000000 13.94706 26.6% 33.0 9s 2501 270 cutoff 38 19.00000 15.00000 21.1% 33.0 10s Explored 3088 nodes (101093 simplex iterations) in 11.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%