Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:54:32 2012 Optimize a model with 73443 rows, 59780 columns and 278890 nonzeros Presolve removed 1970 rows and 4392 columns (presolve time = 5s) ... Presolve removed 1972 rows and 4394 columns Presolve time: 6.31s Presolved: 71471 rows, 55386 columns, 269032 nonzeros Variable types: 0 continuous, 55386 integer (55386 binary) Found heuristic solution: objective 244.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 385 iterations, 0.03 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 (385 simplex iterations) in 6.52 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%