Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:09 2012 Optimize a model with 89 rows, 233 columns and 233 nonzeros Model has 176 quadratic constraints Presolve time: 1.05s Presolved: 89 rows, 233 columns, 233 nonzeros Variable types: 176 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 47.0000000 - - - 1s 0 0 0.00000 0 45 47.00000 0.00000 100% - 1s 0 0 0.42508 0 53 47.00000 0.42508 99.1% - 1s 0 2 0.44620 0 53 47.00000 0.44620 99.1% - 1s H 27 27 15.0000000 3.00572 80.0% 19.4 1s * 29 26 20 14.0000000 3.00572 78.5% 19.5 1s H 326 82 13.0000000 8.25490 36.5% 15.8 1s * 365 71 12 12.0000000 8.54545 28.8% 16.3 1s * 567 5 11 11.0000000 10.83333 1.52% 14.9 1s Cutting planes: Gomory: 2 Explored 573 nodes (8980 simplex iterations) in 1.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%