Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:45:23 2013 Optimize a model with 20320 rows, 44060 columns and 148100 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.39s Presolved: 20300 rows, 44040 columns, 128080 nonzeros Variable types: 24040 continuous, 20000 integer (20000 binary) Root relaxation: objective 4.642213e+04, 656 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46422.1265 0 6 - 46422.1265 - - 1s 0 0 46448.1643 0 4 - 46448.1643 - - 2s 0 0 46448.6126 0 5 - 46448.6126 - - 2s 0 0 46454.2219 0 7 - 46454.2219 - - 2s 0 0 46456.9736 0 8 - 46456.9736 - - 2s 0 0 46457.8398 0 5 - 46457.8398 - - 2s 0 0 46458.2891 0 6 - 46458.2891 - - 2s 0 0 46460.7927 0 7 - 46460.7927 - - 3s 0 0 46463.9422 0 7 - 46463.9422 - - 3s 0 0 46464.2338 0 4 - 46464.2338 - - 3s 0 0 46465.2691 0 9 - 46465.2691 - - 3s 0 0 46465.6213 0 4 - 46465.6213 - - 3s 0 0 46465.6377 0 7 - 46465.6377 - - 3s 0 0 46466.6235 0 6 - 46466.6235 - - 4s 0 0 46466.9449 0 4 - 46466.9449 - - 4s 0 0 46468.7706 0 14 - 46468.7706 - - 4s 0 0 46468.8859 0 6 - 46468.8859 - - 4s 0 0 46468.9354 0 14 - 46468.9354 - - 4s 0 0 46470.2221 0 7 - 46470.2221 - - 4s 0 0 46470.2573 0 14 - 46470.2573 - - 5s 0 0 46470.3635 0 12 - 46470.3635 - - 5s 0 0 46470.7474 0 10 - 46470.7474 - - 5s 0 0 46470.7548 0 10 - 46470.7548 - - 5s 0 0 46470.7548 0 10 - 46470.7548 - - 5s 0 2 46470.7548 0 10 - 46470.7548 - - 8s * 25 5 13 46743.816420 46743.8163 0.00% 28.8 9s Cutting planes: Gomory: 3 Implied bound: 53 Flow cover: 4 Explored 26 nodes (2137 simplex iterations) in 9.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.674381641974e+04, best bound 4.674381625953e+04, gap 0.0000%