Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:30:31 2012 Optimize a model with 8106 rows, 14762 columns and 38476 nonzeros Presolve removed 283 rows and 4721 columns Presolve time: 0.14s Presolved: 7823 rows, 10041 columns, 33022 nonzeros Variable types: 0 continuous, 10041 integer (10041 binary) Found heuristic solution: objective 121.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 134 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (134 simplex iterations) in 0.16 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%