Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:25:17 2013 Optimize a model with 562625 rows, 22500 columns and 1698750 nonzeros Presolve removed 15231 rows and 11282 columns (presolve time = 5s) ... Presolve removed 16244 rows and 11287 columns Presolve time: 8.42s Presolved: 546381 rows, 11213 columns, 1649720 nonzeros Variable types: 72 continuous, 11141 integer (11141 binary) Found heuristic solution: objective 461383.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 12864 1.7794320e+05 0.000000e+00 9.846625e+08 5s 31096 2.1316129e+05 0.000000e+00 2.409438e+08 10s 45032 2.6179884e+05 0.000000e+00 9.040136e+08 15s 60040 2.8667349e+05 0.000000e+00 3.615100e+08 20s 73976 2.9183552e+05 0.000000e+00 1.542303e+08 25s 90056 3.0084044e+05 0.000000e+00 1.526138e+08 30s 107208 3.1155326e+05 0.000000e+00 1.334581e+07 35s 122216 3.1949919e+05 0.000000e+00 9.255878e+07 40s 135085 3.2422798e+05 0.000000e+00 1.210545e+06 45s 141517 3.2497989e+05 0.000000e+00 1.416921e+06 50s 145257 3.2499478e+05 0.000000e+00 0.000000e+00 54s 145257 3.2499478e+05 0.000000e+00 0.000000e+00 54s Root relaxation: objective 3.249948e+05, 145257 iterations, 54.05 seconds Total elapsed time = 65.27s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 324994.778 0 14 461383.000 324994.778 29.6% - 67s H 0 0 325007.00000 324994.778 0.00% - 67s Explored 0 nodes (146029 simplex iterations) in 67.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.250070000000e+05, best bound 3.249950000000e+05, gap 0.0037%