Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:02:46 2014 Optimize a model with 8100 rows, 8011 columns and 31773 nonzeros Presolve time: 0.14s Presolved: 8100 rows, 8011 columns, 31773 nonzeros Variable types: 1 continuous, 8010 integer (8010 binary) Found heuristic solution: objective 1.0006544 Found heuristic solution: objective 0.9978942 Found heuristic solution: objective 0.8101698 Root relaxation: objective 1.344559e-01, 3077 iterations, 0.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13446 0 790 0.81017 0.13446 83.4% - 0s H 0 0 0.3031729 0.13446 55.7% - 0s 0 0 0.13945 0 782 0.30317 0.13945 54.0% - 1s 0 0 0.13945 0 795 0.30317 0.13945 54.0% - 1s 0 0 0.13945 0 821 0.30317 0.13945 54.0% - 1s H 0 0 0.3027617 0.13945 53.9% - 1s 0 0 0.13970 0 857 0.30276 0.13970 53.9% - 1s H 0 0 0.2911304 0.13970 52.0% - 1s 0 0 0.14060 0 826 0.29113 0.14060 51.7% - 1s 0 0 0.14077 0 765 0.29113 0.14077 51.6% - 1s H 0 0 0.2676127 0.14077 47.4% - 1s H 0 0 0.2364452 0.14077 40.5% - 1s 0 0 0.14304 0 660 0.23645 0.14304 39.5% - 2s H 0 0 0.2344072 0.14304 39.0% - 2s H 0 0 0.2297761 0.14304 37.7% - 2s 0 2 0.14351 0 639 0.22978 0.14351 37.5% - 2s H 27 21 0.2252105 0.15070 33.1% 250 2s * 47 29 14 0.2188003 0.15428 29.5% 173 2s H 54 18 0.2049220 0.15429 24.7% 159 2s Cutting planes: Gomory: 5 MIR: 11 Explored 70 nodes (23269 simplex iterations) in 2.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.049220108907e-01, best bound 2.049220108907e-01, gap 0.0%