Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:27:19 2012 Optimize a model with 128 rows, 328 columns and 328 nonzeros Model has 254 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.48s Presolved: 128 rows, 327 columns, 327 nonzeros Variable types: 254 continuous, 73 integer (72 binary) Root relaxation: objective 0.000000e+00, 37 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 68.0000000 - - - 1s 0 0 0.00000 0 61 68.00000 0.00000 100% - 1s 0 0 0.27215 0 65 68.00000 0.27215 100% - 1s 0 2 0.29532 0 65 68.00000 0.29532 100% - 1s * 32 32 19 24.0000000 1.64062 93.2% 44.3 1s H 52 40 21.0000000 2.90269 86.2% 40.9 1s * 72 50 14 20.0000000 4.03371 79.8% 39.6 1s * 155 75 11 17.0000000 5.82353 65.7% 37.4 1s Cutting planes: Gomory: 3 Explored 569 nodes (17673 simplex iterations) in 1.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%