Gurobi 5.0.1 (linux64) logging started Tue Jan 22 19:38:34 2013 Optimize a model with 140 rows, 204 columns and 320 nonzeros Model has 40 quadratic constraints Presolve removed 20 rows and 20 columns Presolve time: 0.24s Presolved: 240 rows, 304 columns, 520 nonzeros Variable types: 284 continuous, 20 integer (20 binary) Root relaxation: objective 0.000000e+00, 80 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 1944.5007691 - - - 0s 0 0 0.00000 0 7 1944.50077 0.00000 100% - 0s 0 2 0.00000 0 3 1944.50077 0.00000 100% - 0s * 36 36 20 1642.0885486 0.00000 100% 28.9 0s * 37 35 20 1335.2424295 0.00000 100% 28.1 0s H 177 124 1328.5570930 98.01316 92.6% 30.6 0s * 177 124 20 1328.5561911 98.01316 92.6% 30.6 0s H 247 171 1307.8936173 98.03061 92.5% 36.4 0s H 441 235 1238.8242541 210.70959 83.0% 41.5 0s H 485 261 1231.8482470 210.70959 82.9% 42.3 0s * 485 261 20 1231.8474484 210.70959 82.9% 42.3 0s 3403 245 1160.72676 19 11 1231.84745 1046.65752 15.0% 46.6 5s Cutting planes: Explored 4236 nodes (181115 simplex iterations) in 5.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.231847464546e+03, best bound 1.231847448440e+03, gap 0.0000%