Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:35:39 2012 Optimize a model with 49861 rows, 46010 columns and 194524 nonzeros Presolve removed 644 rows and 2 columns Presolve time: 1.37s Presolved: 49431 rows, 46008 columns, 238362 nonzeros Variable types: 0 continuous, 46008 integer (46008 binary) Found heuristic solution: objective 214.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 360 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% - 1s Explored 0 nodes (360 simplex iterations) in 1.54 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%