Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:46:40 2012 Optimize a model with 160 rows, 399 columns and 399 nonzeros Model has 318 quadratic constraints Presolve time: 1.88s Presolved: 160 rows, 399 columns, 399 nonzeros Variable types: 318 continuous, 81 integer (81 binary) Root relaxation: objective 0.000000e+00, 40 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 80.0000000 - - - 1s 0 0 0.00000 0 68 80.00000 0.00000 100% - 1s 0 0 0.29129 0 78 80.00000 0.29129 100% - 1s 0 2 0.29717 0 78 80.00000 0.29717 100% - 1s * 34 32 21 31.0000000 1.78624 94.2% 27.8 2s H 126 84 27.0000000 4.26054 84.2% 34.3 2s * 1766 342 48 26.0000000 17.18750 33.9% 27.7 4s 2254 355 23.34286 36 234 26.00000 19.00000 26.9% 25.6 5s * 2778 259 41 25.0000000 20.72500 17.1% 24.1 5s Explored 3200 nodes (74584 simplex iterations) in 5.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%