Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:43:06 2012 Optimize a model with 155 rows, 388 columns and 388 nonzeros Model has 308 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.79s Presolved: 155 rows, 387 columns, 387 nonzeros Variable types: 308 continuous, 79 integer (78 binary) Root relaxation: objective 0.000000e+00, 39 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 72.0000000 - - - 1s 0 0 0.00000 0 42 72.00000 0.00000 100% - 1s 0 0 0.04010 0 76 72.00000 0.04010 100% - 1s 0 2 0.04396 0 76 72.00000 0.04396 100% - 1s H 44 44 31.0000000 2.60660 91.6% 35.1 1s * 122 94 27 29.0000000 3.82721 86.8% 30.5 1s H 162 102 27.0000000 5.30000 80.4% 29.3 2s 2576 640 21.26761 33 237 27.00000 18.46667 31.6% 24.2 5s * 7087 218 42 26.0000000 24.02564 7.59% 19.6 8s Explored 7320 nodes (141555 simplex iterations) in 8.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%