Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:45:47 2012 Optimize a model with 263 rows, 755 columns and 755 nonzeros Model has 524 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 3.06s Presolved: 263 rows, 740 columns, 740 nonzeros Variable types: 524 continuous, 216 integer (215 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 130.0000000 - - - 3s 0 0 0.00000 0 90 130.00000 0.00000 100% - 3s 0 0 0.00000 0 123 130.00000 0.00000 100% - 3s 0 0 0.00000 0 114 130.00000 0.00000 100% - 3s 0 2 0.00000 0 104 130.00000 0.00000 100% - 3s H 47 47 23.0000000 1.94595 91.5% 28.3 3s * 53 50 40 21.0000000 1.94595 90.7% 28.0 3s H 205 143 19.0000000 3.41026 82.1% 17.6 3s * 219 139 36 18.0000000 3.41026 81.1% 18.2 3s * 239 129 21 17.0000000 3.71186 78.2% 18.3 3s * 589 247 23 16.0000000 5.69697 64.4% 17.3 3s 727 320 14.48175 24 306 16.00000 6.43421 59.8% 21.7 5s 2664 355 13.03774 19 561 16.00000 12.00000 25.0% 37.7 10s * 3024 240 27 15.0000000 12.62319 15.8% 38.1 10s Explored 3503 nodes (130622 simplex iterations) in 11.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%