Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:30:58 2012 Optimize a model with 126 rows, 326 columns and 326 nonzeros Model has 250 quadratic constraints Presolve removed 0 rows and 4 columns Presolve time: 1.46s Presolved: 126 rows, 322 columns, 322 nonzeros Variable types: 250 continuous, 72 integer (71 binary) Root relaxation: objective 0.000000e+00, 38 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 65.0000000 - - - 1s 0 0 0.00000 0 10 65.00000 0.00000 100% - 1s 0 0 0.00000 0 25 65.00000 0.00000 100% - 1s 0 0 0.00000 0 62 65.00000 0.00000 100% - 1s 0 2 0.00000 0 62 65.00000 0.00000 100% - 1s H 39 39 21.0000000 3.67347 82.5% 30.5 1s * 70 52 19 20.0000000 4.00000 80.0% 24.9 1s * 602 107 13 19.0000000 13.38095 29.6% 25.6 1s Cutting planes: Explored 1003 nodes (24056 simplex iterations) in 2.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%