Gurobi 5.0.1 (linux64) logging started Mon Dec 10 23:30:30 2012 Optimize a model with 11910 rows, 11880 columns and 45294 nonzeros Presolve removed 739 rows and 123 columns Presolve time: 0.07s Presolved: 11171 rows, 11757 columns, 43733 nonzeros Variable types: 11058 continuous, 699 integer (699 binary) Root relaxation: objective 2.429377e+05, 1040 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 242937.656 0 2 - 242937.656 - - 0s H 0 0 243094.00000 242937.656 0.06% - 0s 0 0 242978.754 0 4 243094.000 242978.754 0.05% - 0s 0 0 242978.754 0 2 243094.000 242978.754 0.05% - 0s 0 0 242988.294 0 3 243094.000 242988.294 0.04% - 0s H 0 0 243023.00000 242988.294 0.01% - 0s 0 0 243010.937 0 5 243023.000 243010.937 0.00% - 0s Cutting planes: Cover: 1 Flow cover: 3 Explored 0 nodes (1736 simplex iterations) in 0.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.430230000000e+05, best bound 2.430109366082e+05, gap 0.0050%