Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:18 2012 Optimize a model with 127 rows, 407 columns and 407 nonzeros Model has 252 quadratic constraints Presolve removed 0 rows and 31 columns Presolve time: 1.47s Presolved: 127 rows, 376 columns, 376 nonzeros Variable types: 252 continuous, 124 integer (123 binary) Root relaxation: objective 0.000000e+00, 47 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 58.0000000 - - - 1s 0 0 0.00000 0 2 58.00000 0.00000 100% - 1s 0 0 0.00000 0 2 58.00000 0.00000 100% - 1s 0 0 0.00000 0 58 58.00000 0.00000 100% - 1s 0 2 0.00000 0 58 58.00000 0.00000 100% - 1s * 22 22 18 6.0000000 0.78261 87.0% 32.8 1s * 27 22 22 5.0000000 0.78261 84.3% 28.3 1s * 39 12 6 4.0000000 0.81967 79.5% 24.6 1s Cutting planes: Explored 208 nodes (3466 simplex iterations) in 1.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%