Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:05 2012 Optimize a model with 131 rows, 418 columns and 418 nonzeros Model has 260 quadratic constraints Presolve removed 0 rows and 26 columns Presolve time: 1.52s Presolved: 131 rows, 392 columns, 392 nonzeros Variable types: 260 continuous, 132 integer (131 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 75.0000000 - - - 1s 0 0 0.00000 0 4 75.00000 0.00000 100% - 1s 0 0 0.00000 0 45 75.00000 0.00000 100% - 1s 0 0 0.00000 0 71 75.00000 0.00000 100% - 1s 0 2 0.00000 0 70 75.00000 0.00000 100% - 1s * 20 18 12 3.0000000 0.26866 91.0% 30.9 1s * 34 14 11 2.0000000 0.43750 78.1% 31.8 1s H 50 16 2.0000000 0.43750 78.1% 22.9 1s Cutting planes: Explored 125 nodes (2932 simplex iterations) in 1.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.999999998953e+00, best bound 1.999999998953e+00, gap 0.0%