Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:22:47 2013 Optimize a model with 113652 rows, 7744 columns and 344608 nonzeros Presolve removed 6160 rows and 3895 columns Presolve time: 1.24s Presolved: 107492 rows, 3849 columns, 326549 nonzeros Variable types: 48 continuous, 3801 integer (3801 binary) Found heuristic solution: objective 153791.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 26088 9.9504241e+04 0.000000e+00 8.512838e+07 5s 55881 1.1292725e+05 0.000000e+00 0.000000e+00 9s 55881 1.1292725e+05 0.000000e+00 0.000000e+00 9s Root relaxation: objective 1.129272e+05, 55881 iterations, 8.80 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 112927.250 0 9 153791.000 112927.250 26.6% - 10s H 0 0 112936.00000 112927.250 0.01% - 10s Explored 0 nodes (55982 simplex iterations) in 10.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.129360000000e+05, best bound 1.129280000000e+05, gap 0.0071%