Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:12:50 2012 Optimize a model with 76479 rows, 57360 columns and 285603 nonzeros Presolve removed 497 rows and 4541 columns (presolve time = 5s) ... Presolve removed 499 rows and 4543 columns Presolve time: 6.34s Presolved: 75980 rows, 52817 columns, 279231 nonzeros Variable types: 0 continuous, 52817 integer (52817 binary) Found heuristic solution: objective 239.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 417 iterations, 0.04 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% - 6s Explored 0 nodes (417 simplex iterations) in 6.58 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%