Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:23:34 2013 Optimize a model with 3600 rows, 104300 columns and 214500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.54s Presolved: 3500 rows, 104200 columns, 212400 nonzeros Variable types: 102200 continuous, 2000 integer (2000 binary) Root relaxation: objective 8.570461e+05, 5648 iterations, 0.43 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 857046.104 0 2 - 857046.104 - - 1s H 0 0 925447.43800 857046.104 7.39% - 1s H 0 0 873810.13452 857046.104 1.92% - 2s 0 0 857083.871 0 2 873810.135 857083.871 1.91% - 2s 0 0 857092.639 0 2 873810.135 857092.639 1.91% - 2s 0 0 857103.778 0 2 873810.135 857103.778 1.91% - 3s 0 0 857106.430 0 2 873810.135 857106.430 1.91% - 3s 0 0 857109.174 0 2 873810.135 857109.174 1.91% - 3s 0 0 857114.534 0 2 873810.135 857114.534 1.91% - 3s 0 0 857114.732 0 2 873810.135 857114.732 1.91% - 4s 0 0 857117.844 0 2 873810.135 857117.844 1.91% - 4s 0 0 857119.804 0 2 873810.135 857119.804 1.91% - 4s 0 0 857120.160 0 2 873810.135 857120.160 1.91% - 5s 0 0 857122.576 0 2 873810.135 857122.576 1.91% - 5s 0 0 857123.707 0 2 873810.135 857123.707 1.91% - 5s 0 0 857124.122 0 2 873810.135 857124.122 1.91% - 5s 0 0 857124.357 0 2 873810.135 857124.357 1.91% - 6s 0 0 857124.416 0 2 873810.135 857124.416 1.91% - 6s 0 0 857124.416 0 2 873810.135 857124.416 1.91% - 7s 0 2 857124.416 0 2 873810.135 857124.416 1.91% - 7s 7 9 866436.692 4 4 873810.135 858246.035 1.78% 389 10s H 27 14 862320.91017 858246.035 0.47% 225 13s 48 17 858693.461 7 2 862320.910 858246.035 0.47% 152 15s H 81 6 859263.31118 858246.035 0.12% 115 19s 85 6 859102.748 34 2 859263.311 858246.035 0.12% 110 20s * 94 9 41 859170.68400 858246.035 0.11% 102 20s H 162 5 859152.84787 858936.688 0.03% 70.4 24s * 179 5 22 859006.31605 858936.688 0.01% 64.3 24s Cutting planes: Implied bound: 14 Flow cover: 15 Explored 180 nodes (20730 simplex iterations) in 24.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.590063160481e+05, best bound 8.589366879433e+05, gap 0.0081%