Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:24:20 2012 Optimize a model with 156 rows, 382 columns and 382 nonzeros Model has 310 quadratic constraints Presolve removed 0 rows and 2 columns Presolve time: 1.81s Presolved: 156 rows, 380 columns, 380 nonzeros Variable types: 310 continuous, 70 integer (69 binary) Root relaxation: objective 0.000000e+00, 34 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 87.0000000 - - - 1s 0 0 0.00000 0 60 87.00000 0.00000 100% - 1s 0 0 0.37246 0 69 87.00000 0.37246 100% - 1s 0 2 0.45417 0 69 87.00000 0.45417 99.5% - 1s H 27 27 86.0000000 2.79748 96.7% 38.9 1s H 44 44 40.0000000 2.79748 93.0% 35.6 1s * 72 53 17 32.0000000 2.90606 90.9% 35.1 1s H 328 173 31.0000000 8.63021 72.2% 28.6 2s * 985 404 44 29.0000000 12.90870 55.5% 34.6 3s 2346 587 23.00838 34 217 29.00000 18.00000 37.9% 25.6 5s * 2504 537 45 27.0000000 18.20755 32.6% 25.0 5s Explored 4062 nodes (93662 simplex iterations) in 8.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%