Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:10:45 2013 Optimize a model with 2000 rows, 101100 columns and 203800 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.41s Presolved: 1900 rows, 101000 columns, 203200 nonzeros Variable types: 100700 continuous, 300 integer (300 binary) Root relaxation: objective 9.053666e+05, 5388 iterations, 0.80 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 4 - 905366.638 - - 1s H 0 0 969595.08113 905366.638 6.62% - 1s H 0 0 923000.66692 905366.638 1.91% - 2s 0 0 905393.238 0 4 923000.667 905393.238 1.91% - 2s 0 0 905441.547 0 4 923000.667 905441.547 1.90% - 3s 0 0 905442.216 0 4 923000.667 905442.216 1.90% - 3s 0 0 905449.857 0 4 923000.667 905449.857 1.90% - 4s 0 0 905449.857 0 4 923000.667 905449.857 1.90% - 4s 0 0 905453.907 0 4 923000.667 905453.907 1.90% - 4s 0 0 905457.972 0 4 923000.667 905457.972 1.90% - 5s 0 0 905459.230 0 4 923000.667 905459.230 1.90% - 5s 0 0 905460.500 0 4 923000.667 905460.500 1.90% - 5s 0 0 905461.142 0 4 923000.667 905461.142 1.90% - 6s 0 0 905461.142 0 4 923000.667 905461.142 1.90% - 7s H 0 0 909764.46606 905461.142 0.47% - 7s 0 2 905461.142 0 4 909764.466 905461.142 0.47% - 8s 5 5 907496.339 5 2 909764.466 906291.249 0.38% 182 10s * 14 6 14 907989.63518 906291.249 0.19% 85.1 11s 28 6 906886.345 2 2 907989.635 906886.345 0.12% 113 15s Cutting planes: Flow cover: 23 Explored 53 nodes (12258 simplex iterations) in 17.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.079896351764e+05, best bound 9.079177915842e+05, gap 0.0079%