Gurobi 5.6.3 (linux64) logging started Wed Oct 8 02:40:03 2014 Optimize a model with 40804 rows, 40603 columns and 161805 nonzeros Presolve time: 1.13s Presolved: 40804 rows, 40603 columns, 161805 nonzeros Variable types: 1 continuous, 40602 integer (40602 binary) Found heuristic solution: objective 1.1216346 Found heuristic solution: objective 1.0825555 Found heuristic solution: objective 0.9095043 Root relaxation: objective 8.554755e-02, 10587 iterations, 3.62 seconds Total elapsed time = 5.27s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.08555 0 1822 0.90950 0.08555 90.6% - 5s H 0 0 0.1384154 0.08555 38.2% - 9s 0 0 0.09402 0 1249 0.13842 0.09402 32.1% - 12s 0 0 0.09402 0 1239 0.13842 0.09402 32.1% - 13s 0 0 0.09630 0 1290 0.13842 0.09630 30.4% - 13s 0 0 0.09751 0 1242 0.13842 0.09751 29.6% - 14s 0 0 0.09751 0 1252 0.13842 0.09751 29.6% - 14s 0 0 0.09751 0 1195 0.13842 0.09751 29.6% - 14s H 0 0 0.1382151 0.09751 29.4% - 14s 0 2 0.09764 0 1199 0.13822 0.09764 29.4% - 14s 1 3 0.10105 1 1178 0.13822 0.09772 29.3% 2555 15s H 81 71 0.1350087 0.10108 25.1% 216 16s * 84 70 14 0.1334977 0.10108 24.3% 211 16s * 94 64 4 0.1331422 0.10153 23.7% 208 16s Cutting planes: Gomory: 3 MIR: 14 Zero half: 9 Explored 159 nodes (55754 simplex iterations) in 16.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.331422240045e-01, best bound 1.331422240045e-01, gap 0.0%