Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:23:22 2013 Optimize a model with 562625 rows, 22500 columns and 1698750 nonzeros Presolve removed 16259 rows and 11288 columns (presolve time = 5s) ... Presolve removed 19586 rows and 11308 columns Presolve time: 8.32s Presolved: 543039 rows, 11192 columns, 1639992 nonzeros Variable types: 74 continuous, 11118 integer (11118 binary) Found heuristic solution: objective 472046.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8576 2.6904335e+05 0.000000e+00 3.871018e+08 5s 18224 2.7027449e+05 0.000000e+00 2.688538e+09 11s 26800 2.7169402e+05 0.000000e+00 4.181143e+08 15s 35376 2.7252430e+05 0.000000e+00 1.566960e+09 20s 43952 2.7281848e+05 0.000000e+00 8.396711e+08 25s 52528 2.7383650e+05 0.000000e+00 9.128411e+08 30s 61104 2.7612587e+05 0.000000e+00 4.548732e+09 35s 73968 2.7964249e+05 0.000000e+00 4.035564e+08 40s 85806 2.8556003e+05 0.000000e+00 1.021976e+09 45s 98670 2.9194748e+05 0.000000e+00 1.099834e+08 50s 111535 2.9730260e+05 0.000000e+00 1.183302e+08 55s 123327 3.0345433e+05 0.000000e+00 6.370161e+08 60s 138335 3.1251767e+05 0.000000e+00 8.636921e+07 65s 152281 3.2057240e+05 0.000000e+00 6.336707e+07 70s 167297 3.2769157e+05 0.000000e+00 1.397157e+07 75s 176945 3.2957075e+05 0.000000e+00 6.161868e+06 81s 183377 3.2985816e+05 0.000000e+00 7.721009e+05 85s 187229 3.2991790e+05 0.000000e+00 0.000000e+00 90s 187229 3.2991790e+05 0.000000e+00 0.000000e+00 90s Root relaxation: objective 3.299179e+05, 187229 iterations, 89.80 seconds Total elapsed time = 100.14s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 329917.900 0 18 472046.000 329917.900 30.1% - 101s H 0 0 329924.00000 329917.900 0.00% - 101s Explored 0 nodes (187601 simplex iterations) in 101.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.299240000000e+05, best bound 3.299180000000e+05, gap 0.0018%