Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:46:55 2013 Optimize a model with 3200 rows, 32600 columns and 70050 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.39s Presolved: 3100 rows, 32450 columns, 64900 nonzeros Variable types: 30000 continuous, 2450 integer (2450 binary) Root relaxation: objective 1.959342e+05, 3478 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 3 - 195934.242 - - 0s 0 0 195970.344 0 3 - 195970.344 - - 0s 0 0 195971.103 0 3 - 195971.103 - - 0s 0 0 196064.038 0 3 - 196064.038 - - 0s 0 0 196070.819 0 3 - 196070.819 - - 1s 0 0 196070.819 0 3 - 196070.819 - - 1s 0 0 196070.819 0 3 - 196070.819 - - 1s 0 0 196072.682 0 3 - 196072.682 - - 1s 0 0 196074.641 0 3 - 196074.641 - - 1s 0 0 196074.659 0 3 - 196074.659 - - 1s 0 0 196074.826 0 3 - 196074.826 - - 1s 0 0 196075.673 0 3 - 196075.673 - - 1s 0 0 196075.673 0 3 - 196075.673 - - 1s 0 0 196076.252 0 3 - 196076.252 - - 2s 0 0 196076.740 0 3 - 196076.740 - - 2s 0 0 196077.512 0 3 - 196077.512 - - 2s 0 0 196077.512 0 3 - 196077.512 - - 2s 0 0 196077.512 0 3 - 196077.512 - - 2s 0 0 196077.799 0 3 - 196077.799 - - 2s 0 0 196080.662 0 3 - 196080.662 - - 2s 0 0 196080.662 0 3 - 196080.662 - - 2s 0 0 196080.662 0 3 - 196080.662 - - 2s 0 0 196080.662 0 3 - 196080.662 - - 3s 0 0 196080.662 0 3 - 196080.662 - - 3s H 0 0 256437.27466 196080.662 23.5% - 4s 0 2 196096.129 0 3 256437.275 196096.129 23.5% - 4s 27 29 196424.154 27 3 256437.275 196239.939 23.5% 9.0 5s H 54 54 207714.43188 196239.939 5.52% 10.9 5s H 81 55 196906.20521 196239.939 0.34% 9.3 6s * 158 58 157 196623.80380 196239.939 0.20% 5.8 7s H 223 33 196573.56222 196462.903 0.06% 14.7 8s H 250 31 196570.91190 196472.409 0.05% 13.9 8s * 294 20 58 196564.85016 196512.032 0.03% 13.4 9s Cutting planes: Flow cover: 13 Explored 309 nodes (8019 simplex iterations) in 9.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965648501621e+05, best bound 1.965463540247e+05, gap 0.0094%