Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:32:47 2013 Optimize a model with 682800 rows, 25600 columns and 2060800 nonzeros Presolve removed 22817 rows and 12869 columns (presolve time = 5s) ... Presolve removed 27891 rows and 12899 columns Presolve time: 9.70s Presolved: 654909 rows, 12701 columns, 1976964 nonzeros Variable types: 78 continuous, 12623 integer (12623 binary) Found heuristic solution: objective 555906.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 9656 2.0977206e+05 0.000000e+00 6.726108e+08 5s 24140 2.2519425e+05 0.000000e+00 9.553869e+09 10s 38639 2.8710355e+05 0.000000e+00 6.279251e+09 15s 49502 3.3437070e+05 0.000000e+00 2.014637e+09 20s 62781 3.4844194e+05 0.000000e+00 3.415887e+08 25s 74851 3.5642306e+05 0.000000e+00 6.684933e+07 30s 88128 3.6482364e+05 0.000000e+00 1.741802e+08 35s 100198 3.7425640e+05 0.000000e+00 6.438299e+07 40s 111061 3.8110481e+05 0.000000e+00 5.087819e+07 45s 123131 3.8619397e+05 0.000000e+00 4.732584e+07 50s 137615 3.9246472e+05 0.000000e+00 2.553022e+07 55s 148493 3.9734298e+05 0.000000e+00 4.630918e+04 61s 148844 3.9732411e+05 0.000000e+00 0.000000e+00 62s 148844 3.9732411e+05 0.000000e+00 0.000000e+00 62s Root relaxation: objective 3.973241e+05, 148844 iterations, 61.78 seconds Total elapsed time = 75.39s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 397324.111 0 16 555906.000 397324.111 28.5% - 75s H 0 0 397338.00000 397324.111 0.00% - 76s Explored 0 nodes (149080 simplex iterations) in 76.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.973380000000e+05, best bound 3.973250000000e+05, gap 0.0033%