Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:44 2012 Optimize a model with 152 rows, 475 columns and 475 nonzeros Model has 302 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 1.76s Presolved: 152 rows, 450 columns, 450 nonzeros Variable types: 302 continuous, 148 integer (147 binary) Root relaxation: objective 0.000000e+00, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 76.0000000 - - - 1s 0 0 0.00000 0 7 76.00000 0.00000 100% - 1s 0 0 0.00000 0 77 76.00000 0.00000 100% - 1s 0 0 0.00000 0 2 76.00000 0.00000 100% - 1s 0 2 0.00000 0 81 76.00000 0.00000 100% - 1s * 25 25 16 5.0000000 0.50029 90.0% 40.1 1s * 40 20 11 4.0000000 0.84375 78.9% 32.1 1s H 77 13 4.0000000 2.74545 31.4% 28.9 1s Cutting planes: Explored 102 nodes (3069 simplex iterations) in 1.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.999999998904e+00, best bound 3.999999998904e+00, gap 0.0%