Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:55:50 2013 Optimize a model with 81990 rows, 81090 columns and 324090 nonzeros Presolve removed 5275 rows and 0 columns Presolve time: 0.58s Presolved: 76715 rows, 81090 columns, 313540 nonzeros Variable types: 81000 continuous, 90 integer (90 binary) Root relaxation: objective 1.034197e+05, 17387 iterations, 4.81 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 103419.686 0 4 - 103419.686 - - 5s H 0 0 108074.00000 103419.686 4.31% - 5s 0 0 103421.697 0 6 108074.000 103421.697 4.30% - 6s 0 0 103421.802 0 6 108074.000 103421.802 4.30% - 7s H 0 0 105532.32184 103421.802 2.00% - 10s H 0 0 104512.00000 103421.802 1.04% - 11s 0 0 103421.802 0 4 104512.000 103421.802 1.04% - 16s 0 0 103423.067 0 5 104512.000 103423.067 1.04% - 17s 0 0 103423.081 0 5 104512.000 103423.081 1.04% - 17s 0 2 103435.583 0 5 104512.000 103435.583 1.03% - 20s H 8 8 104440.43820 103702.489 0.71% 318 21s H 9 9 104200.25926 103702.489 0.48% 297 21s H 10 7 104127.50538 103702.489 0.41% 272 22s H 11 6 104122.30000 103702.489 0.40% 251 22s H 12 6 104112.33333 103702.489 0.39% 232 22s H 27 8 104007.00000 103756.110 0.24% 154 23s H 28 9 104005.44944 103756.110 0.24% 150 23s * 30 8 9 103852.00000 103756.110 0.09% 144 23s Cutting planes: Gomory: 1 Flow cover: 2 Explored 41 nodes (31362 simplex iterations) in 23.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.038520000000e+05, best bound 1.038520000000e+05, gap 0.0%