Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:43:59 2012 Optimize a model with 319 rows, 879 columns and 879 nonzeros Model has 636 quadratic constraints Presolve removed 0 rows and 10 columns Presolve time: 3.71s Presolved: 319 rows, 869 columns, 869 nonzeros Variable types: 636 continuous, 233 integer (232 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 0 159.0000000 - - - 3s 0 0 0.00000 0 2 159.00000 0.00000 100% - 3s 0 0 0.00000 0 3 159.00000 0.00000 100% - 3s 0 0 0.00000 0 121 159.00000 0.00000 100% - 3s 0 2 0.00000 0 117 159.00000 0.00000 100% - 3s H 54 54 46.0000000 2.16667 95.3% 35.0 4s * 73 73 55 36.0000000 2.16667 94.0% 30.9 4s H 125 116 35.0000000 2.17073 93.8% 26.4 4s H 135 107 32.0000000 2.17073 93.2% 28.1 4s * 287 186 27 30.0000000 5.00000 83.3% 27.3 4s * 332 202 21 29.0000000 5.00000 82.8% 28.0 4s H 484 248 28.0000000 5.94690 78.8% 27.7 4s * 486 237 17 27.0000000 5.94690 78.0% 27.7 4s 603 298 25.05634 21 541 27.00000 7.98522 70.4% 27.9 5s 2056 658 20.67742 33 496 27.00000 13.88312 48.6% 36.7 10s * 2578 660 65 25.0000000 15.54348 37.8% 34.4 11s 3884 761 19.00000 33 507 25.00000 17.50336 30.0% 34.1 15s H 4498 670 24.0000000 18.07801 24.7% 35.1 17s 4665 661 21.44554 34 516 24.00000 18.28795 23.8% 34.8 20s 5111 600 22.00000 34 504 24.00000 18.95238 21.0% 34.9 25s 5306 577 22.79734 34 470 24.00000 19.00000 20.8% 35.7 30s 6066 424 22.00000 36 543 24.00000 20.00000 16.7% 35.6 35s Explored 6999 nodes (244226 simplex iterations) in 38.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%