Gurobi 5.0.1 (linux64) logging started Mon Feb 4 21:25:31 2013 Optimize a model with 972150 rows, 32400 columns and 2932200 nonzeros Presolve removed 35570 rows and 16369 columns (presolve time = 5s) ... Presolve removed 42661 rows and 16384 columns (presolve time = 10s) ... Presolve removed 43864 rows and 16387 columns (presolve time = 15s) ... Presolve removed 43864 rows and 16387 columns Presolve time: 15.91s Presolved: 928286 rows, 16013 columns, 2795649 nonzeros Variable types: 61 continuous, 15952 integer (15952 binary) Found heuristic solution: objective 749858.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 5928 5.2234688e+05 0.000000e+00 2.050192e+09 5s 13338 5.2556733e+05 0.000000e+00 2.195512e+08 10s 23712 5.3030311e+05 0.000000e+00 2.565411e+08 15s 37050 5.3731303e+05 0.000000e+00 5.484996e+07 21s 51870 5.4523019e+05 0.000000e+00 5.670573e+07 25s 68172 5.5614967e+05 0.000000e+00 8.251782e+07 30s 81510 5.6364868e+05 0.000000e+00 5.919479e+07 35s 94848 5.7185066e+05 0.000000e+00 1.758548e+08 41s 106704 5.7679718e+05 0.000000e+00 5.280315e+06 46s 112632 5.7971722e+05 0.000000e+00 3.815564e+04 51s 113174 5.7972536e+05 0.000000e+00 0.000000e+00 53s 113174 5.7972536e+05 0.000000e+00 0.000000e+00 53s Root relaxation: objective 5.797254e+05, 113174 iterations, 52.79 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 579725.364 0 19 749858.000 579725.364 22.7% - 74s H 0 0 579739.00000 579725.364 0.00% - 74s Explored 0 nodes (113611 simplex iterations) in 74.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.797390000000e+05, best bound 5.797260000000e+05, gap 0.0022%