Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:17:39 2013 Optimize a model with 562625 rows, 22500 columns and 1698750 nonzeros Presolve removed 22752 rows and 11349 columns (presolve time = 5s) ... Presolve removed 26047 rows and 11358 columns Presolve time: 8.73s Presolved: 536578 rows, 11142 columns, 1619867 nonzeros Variable types: 69 continuous, 11073 integer (11073 binary) Found heuristic solution: objective 475395.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8576 2.8178067e+05 0.000000e+00 1.891957e+09 5s 17152 2.8265244e+05 0.000000e+00 6.690695e+08 10s 25728 2.8448744e+05 0.000000e+00 5.499871e+08 15s 34304 2.8503404e+05 0.000000e+00 1.428426e+09 21s 41808 2.8658126e+05 0.000000e+00 1.940876e+09 25s 52528 2.8925372e+05 0.000000e+00 3.854937e+08 30s 66464 2.9332974e+05 0.000000e+00 5.515207e+08 35s 80411 2.9659248e+05 0.000000e+00 3.826230e+08 40s 96549 3.0077713e+05 0.000000e+00 1.879196e+08 45s 109480 3.0243771e+05 0.000000e+00 2.454960e+08 50s 121272 3.0573555e+05 0.000000e+00 7.600770e+09 55s 135302 3.0836391e+05 0.000000e+00 1.429734e+09 60s 147118 3.1358292e+05 0.000000e+00 2.069579e+08 65s 164276 3.2258142e+05 0.000000e+00 1.282370e+07 70s 180357 3.3352051e+05 0.000000e+00 8.013216e+06 75s 185315 3.3636080e+05 0.000000e+00 0.000000e+00 78s 185315 3.3636080e+05 0.000000e+00 0.000000e+00 79s Root relaxation: objective 3.363608e+05, 185315 iterations, 78.52 seconds Total elapsed time = 90.05s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 336360.800 0 33 475395.000 336360.800 29.2% - 91s H 0 0 336376.00000 336360.800 0.00% - 91s Explored 0 nodes (186152 simplex iterations) in 91.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.363760000000e+05, best bound 3.363610000000e+05, gap 0.0045%