Gurobi 5.6.3 (linux64) logging started Tue Oct 7 22:18:33 2014 Optimize a model with 14641 rows, 14521 columns and 57720 nonzeros Presolve time: 0.27s Presolved: 14641 rows, 14521 columns, 57720 nonzeros Variable types: 1 continuous, 14520 integer (14520 binary) Found heuristic solution: objective 1.0949528 Found heuristic solution: objective 0.9556730 Found heuristic solution: objective 0.8063013 Root relaxation: objective 1.158699e-01, 5895 iterations, 0.85 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.11587 0 1042 0.80630 0.11587 85.6% - 1s H 0 0 0.3330646 0.11587 65.2% - 1s 0 0 0.11912 0 1088 0.33306 0.11912 64.2% - 2s 0 0 0.11912 0 1040 0.33306 0.11912 64.2% - 3s H 0 0 0.3288535 0.11912 63.8% - 3s 0 0 0.11913 0 1101 0.32885 0.11913 63.8% - 3s H 0 0 0.3265583 0.11913 63.5% - 3s 0 0 0.11943 0 1093 0.32656 0.11943 63.4% - 3s H 0 0 0.3250664 0.11943 63.3% - 4s H 0 0 0.2684606 0.11943 55.5% - 4s 0 0 0.11961 0 1112 0.26846 0.11961 55.4% - 4s H 0 0 0.2471404 0.11961 51.6% - 4s 0 2 0.11961 0 1108 0.24714 0.11961 51.6% - 19s H 1 2 0.1999065 0.11961 40.2% 953 20s H 39 27 0.1988698 0.13122 34.0% 633 23s * 52 29 31 0.1983972 0.13122 33.9% 500 23s * 64 31 21 0.1969368 0.13123 33.4% 430 23s H 71 24 0.1936280 0.13180 31.9% 414 24s * 76 26 19 0.1924068 0.13210 31.3% 399 24s Cutting planes: Gomory: 3 MIR: 1 Zero half: 6 Explored 103 nodes (57857 simplex iterations) in 24.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.924067804458e-01, best bound 1.924067804458e-01, gap 0.0%