Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:07:21 2012 Optimize a model with 174 rows, 403 columns and 403 nonzeros Model has 346 quadratic constraints Presolve time: 2.01s Presolved: 174 rows, 403 columns, 403 nonzeros Variable types: 346 continuous, 57 integer (57 binary) Root relaxation: objective 0.000000e+00, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 98.0000000 - - - 2s 0 0 0.00000 0 32 98.00000 0.00000 100% - 2s 0 0 0.04412 0 51 98.00000 0.04412 100% - 2s 0 2 0.18750 0 51 98.00000 0.18750 100% - 2s * 51 47 29 46.0000000 3.50000 92.4% 34.6 2s H 81 66 45.0000000 3.70588 91.8% 34.0 2s * 81 62 21 44.0000000 3.70588 91.6% 34.1 2s H 276 165 40.0000000 8.72141 78.2% 42.4 2s 1581 488 35.79592 35 238 40.00000 20.71429 48.2% 34.8 5s 6876 1739 37.03378 33 237 40.00000 30.00000 25.0% 21.6 10s * 6977 1626 43 39.0000000 30.00000 23.1% 21.5 10s * 7582 1513 36 38.0000000 30.77778 19.0% 21.1 10s 9446 1243 36.04762 38 215 38.00000 32.80000 13.7% 20.0 15s Explored 11393 nodes (218651 simplex iterations) in 19.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%