Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:53:08 2014 Optimize a model with 6724 rows, 6643 columns and 26325 nonzeros Presolve time: 0.15s Presolved: 6724 rows, 6643 columns, 26325 nonzeros Variable types: 1 continuous, 6642 integer (6642 binary) Found heuristic solution: objective 0.8569266 Found heuristic solution: objective 0.8458014 Found heuristic solution: objective 0.6690674 Root relaxation: objective 1.329478e-01, 2567 iterations, 0.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13295 0 629 0.66907 0.13295 80.1% - 0s H 0 0 0.4873995 0.13295 72.7% - 0s H 0 0 0.2557512 0.13295 48.0% - 0s 0 0 0.13794 0 546 0.25575 0.13794 46.1% - 0s 0 0 0.13794 0 536 0.25575 0.13794 46.1% - 1s 0 0 0.13857 0 612 0.25575 0.13857 45.8% - 1s 0 0 0.14114 0 562 0.25575 0.14114 44.8% - 1s 0 0 0.14154 0 539 0.25575 0.14154 44.7% - 1s 0 0 0.14154 0 503 0.25575 0.14154 44.7% - 1s H 0 0 0.2361343 0.14154 40.1% - 1s 0 2 0.14447 0 500 0.23613 0.14447 38.8% - 1s H 27 27 0.2350960 0.14529 38.2% 145 1s * 47 39 33 0.2313552 0.14529 37.2% 96.1 1s H 54 33 0.2273010 0.14562 35.9% 95.2 1s * 61 29 10 0.2198150 0.14562 33.8% 87.3 1s * 76 18 14 0.2178808 0.18312 16.0% 83.3 1s * 77 17 14 0.2156372 0.18312 15.1% 82.3 1s Cutting planes: Gomory: 5 MIR: 61 Zero half: 1 Explored 94 nodes (16861 simplex iterations) in 1.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.156371773563e-01, best bound 2.156371773563e-01, gap 0.0%