Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:54:58 2014 Optimize a model with 7056 rows, 6973 columns and 27639 nonzeros Presolve time: 0.14s Presolved: 7056 rows, 6973 columns, 27639 nonzeros Variable types: 1 continuous, 6972 integer (6972 binary) Found heuristic solution: objective 1.1051612 Found heuristic solution: objective 1.0287373 Found heuristic solution: objective 0.7424128 Root relaxation: objective 1.357409e-01, 3115 iterations, 0.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13574 0 692 0.74241 0.13574 81.7% - 0s H 0 0 0.7255163 0.13574 81.3% - 0s H 0 0 0.2397985 0.13574 43.4% - 0s 0 0 0.14585 0 617 0.23980 0.14585 39.2% - 1s 0 0 0.14585 0 614 0.23980 0.14585 39.2% - 1s 0 0 0.14634 0 605 0.23980 0.14634 39.0% - 1s 0 0 0.14770 0 640 0.23980 0.14770 38.4% - 1s 0 0 0.14815 0 660 0.23980 0.14815 38.2% - 1s 0 0 0.14826 0 654 0.23980 0.14826 38.2% - 1s 0 0 0.14835 0 641 0.23980 0.14835 38.1% - 1s 0 0 0.14841 0 674 0.23980 0.14841 38.1% - 1s 0 0 0.14841 0 625 0.23980 0.14841 38.1% - 1s 0 2 0.14845 0 625 0.23980 0.14845 38.1% - 1s H 27 18 0.2321898 0.16932 27.1% 174 2s * 45 24 11 0.2295480 0.18013 21.5% 122 2s * 47 21 12 0.2231243 0.18013 19.3% 117 2s H 54 18 0.2092762 0.18013 13.9% 111 2s * 66 18 7 0.2074058 0.18437 11.1% 101 2s * 67 5 7 0.2035467 0.18437 9.42% 99.3 2s Cutting planes: Gomory: 7 MIR: 5 Zero half: 1 Explored 73 nodes (18462 simplex iterations) in 2.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.035466552318e-01, best bound 2.035466552318e-01, gap 0.0%