Gurobi 5.6.3 (linux64) logging started Wed Oct 8 03:53:45 2014 Optimize a model with 47524 rows, 47307 columns and 188573 nonzeros Presolve time: 1.31s Presolved: 47524 rows, 47307 columns, 188573 nonzeros Variable types: 1 continuous, 47306 integer (47306 binary) Found heuristic solution: objective 0.7964231 Found heuristic solution: objective 0.7958693 Found heuristic solution: objective 0.7470211 Root relaxation: objective 8.256895e-02, 10079 iterations, 4.71 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.08257 0 1968 0.74702 0.08257 88.9% - 7s H 0 0 0.1420906 0.08257 41.9% - 13s 0 0 0.08912 0 1416 0.14209 0.08912 37.3% - 17s 0 0 0.08912 0 1392 0.14209 0.08912 37.3% - 18s 0 0 0.09662 0 1318 0.14209 0.09662 32.0% - 19s 0 0 0.09746 0 1345 0.14209 0.09746 31.4% - 19s 0 0 0.09757 0 1413 0.14209 0.09757 31.3% - 19s 0 0 0.09757 0 1408 0.14209 0.09757 31.3% - 19s H 0 0 0.1414439 0.09757 31.0% - 19s 0 0 0.09772 0 1258 0.14144 0.09772 30.9% - 19s 0 0 0.09773 0 1271 0.14144 0.09773 30.9% - 19s 0 0 0.09773 0 1146 0.14144 0.09773 30.9% - 20s H 0 0 0.1406169 0.09773 30.5% - 20s H 0 0 0.1366482 0.09773 28.5% - 20s H 0 0 0.1356473 0.09773 27.9% - 21s 0 2 0.10095 0 967 0.13565 0.10095 25.6% - 21s H 27 27 0.1320049 0.10379 21.4% 459 21s * 81 65 49 0.1314773 0.10379 21.1% 193 22s Cutting planes: Gomory: 4 MIR: 26 Zero half: 11 Explored 159 nodes (65828 simplex iterations) in 23.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.314772817169e-01, best bound 1.314772817169e-01, gap 0.0%