Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:18:05 2012 Optimize a model with 38521 rows, 35156 columns and 149785 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.88s Presolved: 38706 rows, 35154 columns, 184342 nonzeros Variable types: 0 continuous, 35154 integer (35154 binary) Found heuristic solution: objective 187.0000000 Root relaxation: objective 2.000000e+00, 22202 iterations, 1.52 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 324 187.00000 2.00000 98.9% - 5s H 0 0 184.0000000 2.00000 98.9% - 5s H 0 0 4.0000000 2.00000 50.0% - 5s H 0 0 3.0000000 2.00000 33.3% - 5s 0 0 infeasible 0 3.00000 2.00000 33.3% - 5s Cutting planes: Zero half: 10 Explored 0 nodes (77029 simplex iterations) in 5.91 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%