Gurobi 5.0.1 (linux64) logging started Wed Apr 24 07:19:37 2013 Optimize a model with 89394 rows, 88454 columns and 353534 nonzeros Presolve removed 4388 rows and 0 columns Presolve time: 0.63s Presolved: 85006 rows, 88454 columns, 344758 nonzeros Variable types: 88360 continuous, 94 integer (94 binary) Root relaxation: objective 9.301375e+04, 15283 iterations, 4.15 seconds Total elapsed time = 5.02s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 93013.7476 0 3 - 93013.7476 - - 5s H 0 0 94052.000000 93013.7476 1.10% - 5s 0 0 93015.5839 0 4 94052.0000 93015.5839 1.10% - 6s 0 0 93015.5839 0 4 94052.0000 93015.5839 1.10% - 7s 0 0 93015.9230 0 4 94052.0000 93015.9230 1.10% - 7s 0 0 93015.9230 0 4 94052.0000 93015.9230 1.10% - 8s 0 0 93015.9602 0 5 94052.0000 93015.9602 1.10% - 9s 0 0 93016.4769 0 4 94052.0000 93016.4769 1.10% - 10s H 0 0 93610.953701 93016.4769 0.64% - 12s H 0 0 93406.338146 93016.4769 0.42% - 12s H 0 0 93350.649559 93016.4769 0.36% - 12s 0 0 93016.4769 0 3 93350.6496 93016.4769 0.36% - 16s 0 0 93016.5090 0 6 93350.6496 93016.5090 0.36% - 17s 0 0 93016.5121 0 7 93350.6496 93016.5121 0.36% - 17s 0 0 93016.5261 0 4 93350.6496 93016.5261 0.36% - 18s 0 0 93016.5487 0 5 93350.6496 93016.5487 0.36% - 18s 0 2 93018.0134 0 5 93350.6496 93018.0134 0.36% - 20s H 4 4 93123.000000 93018.0134 0.11% 51.5 20s H 5 4 93116.937143 93018.0134 0.11% 58.2 20s * 7 4 7 93110.000000 93018.0134 0.10% 49.0 20s Cutting planes: Gomory: 2 Flow cover: 4 Explored 13 nodes (23291 simplex iterations) in 20.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.311000000000e+04, best bound 9.311000000000e+04, gap 0.0%