Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:28:28 2014 Optimize a model with 2776 rows, 1407 columns and 6845 nonzeros Presolve removed 37 rows and 0 columns Presolve time: 0.12s Presolved: 2739 rows, 1407 columns, 6808 nonzeros Variable types: 1 continuous, 1406 integer (1406 binary) Found heuristic solution: objective 0.8969954 Found heuristic solution: objective 0.8574996 Found heuristic solution: objective 0.6242721 Root relaxation: objective 1.511125e-02, 1630 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.01511 0 903 0.62427 0.01511 97.6% - 0s H 0 0 0.5533325 0.01511 97.3% - 0s 0 0 0.01884 0 747 0.55333 0.01884 96.6% - 0s 0 0 0.11480 0 338 0.55333 0.11480 79.3% - 0s H 0 0 0.5525047 0.11480 79.2% - 0s H 0 0 0.5205039 0.11480 77.9% - 0s 0 0 0.13820 0 271 0.52050 0.13820 73.4% - 0s H 0 0 0.5180638 0.13820 73.3% - 0s 0 0 0.13973 0 269 0.51806 0.13973 73.0% - 0s 0 0 0.13973 0 269 0.51806 0.13973 73.0% - 0s H 0 0 0.4584915 0.13973 69.5% - 0s 0 0 0.17531 0 236 0.45849 0.17531 61.8% - 0s 0 0 0.17531 0 235 0.45849 0.17531 61.8% - 1s H 0 0 0.4444935 0.17531 60.6% - 1s H 0 0 0.4011316 0.17531 56.3% - 1s H 0 0 0.3945223 0.17531 55.6% - 1s H 0 0 0.3616030 0.17531 51.5% - 1s 0 2 0.18866 0 259 0.36160 0.18866 47.8% - 1s Cutting planes: Gomory: 6 Explored 16 nodes (11374 simplex iterations) in 1.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.616030442195e-01, best bound 3.616030442195e-01, gap 0.0%