Gurobi 5.6.3 (linux64) logging started Tue Oct 7 23:13:49 2014 Optimize a model with 18769 rows, 18633 columns and 74120 nonzeros Presolve time: 0.38s Presolved: 18769 rows, 18633 columns, 74120 nonzeros Variable types: 1 continuous, 18632 integer (18632 binary) Found heuristic solution: objective 1.0675106 Found heuristic solution: objective 1.0572955 Found heuristic solution: objective 0.8696472 Root relaxation: objective 1.045659e-01, 6280 iterations, 0.98 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.10457 0 1112 0.86965 0.10457 88.0% - 1s H 0 0 0.5535118 0.10457 81.1% - 1s H 0 0 0.1821493 0.10457 42.6% - 2s 0 0 0.11865 0 749 0.18215 0.11865 34.9% - 3s 0 0 0.11865 0 865 0.18215 0.11865 34.9% - 4s 0 0 0.12055 0 770 0.18215 0.12055 33.8% - 4s 0 0 0.12099 0 869 0.18215 0.12099 33.6% - 4s 0 0 0.12131 0 895 0.18215 0.12131 33.4% - 4s 0 0 0.12179 0 826 0.18215 0.12179 33.1% - 4s 0 0 0.12184 0 828 0.18215 0.12184 33.1% - 4s 0 0 0.12184 0 799 0.18215 0.12184 33.1% - 4s H 0 0 0.1803491 0.12184 32.4% - 5s H 0 0 0.1786743 0.12184 31.8% - 5s H 0 0 0.1737017 0.12184 29.9% - 5s H 0 0 0.1720338 0.12184 29.2% - 5s 0 2 0.13559 0 505 0.17203 0.13559 21.2% - 5s * 10 8 7 0.1698424 0.16908 0.45% 422 5s * 11 2 7 0.1690789 0.16908 0.00% 384 5s Cutting planes: Gomory: 3 MIR: 13 Zero half: 2 Explored 12 nodes (26301 simplex iterations) in 5.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.690788787226e-01, best bound 1.690788787226e-01, gap 0.0%