Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:21:40 2013 Optimize a model with 109823 rows, 7569 columns and 333036 nonzeros Presolve removed 7268 rows and 3829 columns Presolve time: 1.16s Presolved: 102555 rows, 3740 columns, 311107 nonzeros Variable types: 41 continuous, 3699 integer (3699 binary) Found heuristic solution: objective 144477.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 33228 1.0368385e+05 0.000000e+00 5.245300e+06 5s 38133 1.0588933e+05 0.000000e+00 0.000000e+00 6s 38133 1.0588933e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.058893e+05, 38133 iterations, 5.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 105889.333 0 19 144477.000 105889.333 26.7% - 7s H 0 0 105905.00000 105889.333 0.01% - 7s H 0 0 105902.00000 105889.333 0.01% - 7s H 0 0 105901.00000 105889.333 0.01% - 7s 0 0 105889.518 0 32 105901.000 105889.518 0.01% - 8s 0 0 105889.518 0 20 105901.000 105889.518 0.01% - 8s H 0 0 105900.00000 105889.518 0.01% - 8s Explored 0 nodes (43016 simplex iterations) in 8.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.059000000000e+05, best bound 1.058900000000e+05, gap 0.0094%