Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:02:35 2013 Optimize a model with 231 rows, 121 columns and 726 nonzeros Presolve removed 112 rows and 69 columns Presolve time: 0.00s Presolved: 119 rows, 52 columns, 381 nonzeros Variable types: 3 continuous, 49 integer (49 binary) Found heuristic solution: objective 2136.0000000 Root relaxation: objective 1.995957e+03, 3 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1995.95745 0 3 2136.00000 1995.95745 6.56% - 0s H 0 0 2008.0000000 1995.95745 0.60% - 0s 0 0 2001.23769 0 7 2008.00000 2001.23769 0.34% - 0s 0 0 2001.23769 0 4 2008.00000 2001.23769 0.34% - 0s 0 0 2003.25970 0 2 2008.00000 2003.25970 0.24% - 0s 0 0 2005.97648 0 11 2008.00000 2005.97648 0.10% - 0s 0 0 cutoff 0 2008.00000 2007.00201 0.05% - 0s Cutting planes: Cover: 1 Clique: 1 MIR: 6 Explored 0 nodes (57 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.008000000000e+03, best bound 2.008000000000e+03, gap 0.0%