Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:12:38 2012 Optimize a model with 1583 rows, 1980 columns and 6510 nonzeros Presolve removed 11 rows and 398 columns Presolve time: 0.09s Presolved: 1572 rows, 1582 columns, 6042 nonzeros Variable types: 0 continuous, 1582 integer (1582 binary) Found heuristic solution: objective 44.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 79 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 64 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (141 simplex iterations) in 0.09 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%