Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:39:08 2012 Optimize a model with 30623 rows, 31152 columns and 122142 nonzeros Presolve removed 386 rows and 5634 columns Presolve time: 0.74s Presolved: 30237 rows, 25518 columns, 115286 nonzeros Variable types: 0 continuous, 25518 integer (25518 binary) Found heuristic solution: objective 176.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 23941 3.0000660e+00 8.161513e+00 0.000000e+00 5s 24532 3.0000000e+00 0.000000e+00 0.000000e+00 5s Root relaxation: objective 3.000000e+00, 24532 iterations, 5.34 seconds Total elapsed time = 13.16s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 108 176.00000 3.00000 98.3% - 15s H 0 0 3.0000000 3.00000 0.0% - 15s Explored 0 nodes (70597 simplex iterations) in 15.68 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%