Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:36:49 2012 Optimize a model with 28349 rows, 30800 columns and 114973 nonzeros Presolve removed 381 rows and 5077 columns Presolve time: 0.67s Presolved: 27968 rows, 25723 columns, 108703 nonzeros Variable types: 0 continuous, 25723 integer (25723 binary) Found heuristic solution: objective 175.0000000 Root relaxation: objective 3.000000e+00, 24446 iterations, 3.96 seconds Total elapsed time = 11.77s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 28 175.00000 3.00000 98.3% - 12s H 0 0 3.0000000 3.00000 0.0% - 12s Explored 0 nodes (55657 simplex iterations) in 12.84 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%