Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:36:23 2014 Optimize a model with 7504 rows, 3783 columns and 18605 nonzeros Presolve removed 61 rows and 0 columns Presolve time: 0.11s Presolved: 7443 rows, 3783 columns, 18544 nonzeros Variable types: 1 continuous, 3782 integer (3782 binary) Found heuristic solution: objective 0.7520517 Found heuristic solution: objective 0.7485425 Found heuristic solution: objective 0.7071123 Root relaxation: objective 6.693043e-03, 4930 iterations, 0.31 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00669 0 2873 0.70711 0.00669 99.1% - 0s H 0 0 0.4576728 0.00669 98.5% - 0s 0 0 0.01104 0 1608 0.45767 0.01104 97.6% - 1s 0 0 0.02465 0 1120 0.45767 0.02465 94.6% - 1s H 0 0 0.4362949 0.02465 94.4% - 1s H 0 0 0.4317369 0.02465 94.3% - 1s 0 0 0.02665 0 1018 0.43174 0.02665 93.8% - 2s H 0 0 0.4092091 0.02665 93.5% - 2s 0 0 0.03877 0 892 0.40921 0.03877 90.5% - 2s H 0 0 0.3817926 0.03877 89.8% - 2s 0 0 0.04137 0 732 0.38179 0.04137 89.2% - 2s 0 1 0.04137 0 728 0.38179 0.04137 89.2% - 5s H 3 2 0.3756731 0.09532 74.6% 435 6s H 5 3 0.3707442 0.10421 71.9% 261 7s H 6 4 0.3537184 0.11349 67.9% 218 7s H 7 4 0.3275067 0.12240 62.6% 187 7s H 7 3 0.3232888 0.12240 62.1% 187 7s H 10 5 0.3151026 0.13498 57.2% 1013 7s H 11 5 0.2742613 0.13498 50.8% 983 12s H 13 6 0.2742506 0.16506 39.8% 832 12s H 15 7 0.2719174 0.18483 32.0% 721 13s H 15 6 0.2642609 0.18483 30.1% 721 13s H 16 7 0.2559621 0.19036 25.6% 676 13s H 17 6 0.2558268 0.20282 20.7% 636 13s H 18 7 0.2543902 0.20886 17.9% 601 13s H 25 11 0.2465904 0.21476 12.9% 432 14s H 26 10 0.2457392 0.24114 1.87% 416 14s H 26 9 0.2411446 0.24114 0.00% 416 14s Cutting planes: MIR: 1 Zero half: 1 Explored 26 nodes (40772 simplex iterations) in 14.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.411446186623e-01, best bound 2.411446186623e-01, gap 0.0%