Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:18:42 2013 Optimize a model with 1300 rows, 26150 columns and 53750 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.30s Presolved: 1200 rows, 26050 columns, 53400 nonzeros Variable types: 25600 continuous, 450 integer (450 binary) Root relaxation: objective 2.208160e+05, 1997 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 4 - 220815.985 - - 0s 0 0 220896.360 0 3 - 220896.360 - - 0s 0 0 220928.451 0 4 - 220928.451 - - 0s 0 0 220933.282 0 3 - 220933.282 - - 0s 0 0 220942.456 0 4 - 220942.456 - - 0s 0 0 220945.389 0 4 - 220945.389 - - 0s 0 0 220945.599 0 4 - 220945.599 - - 0s 0 0 220945.706 0 4 - 220945.706 - - 1s 0 0 220945.820 0 3 - 220945.820 - - 1s 0 0 220946.132 0 3 - 220946.132 - - 1s 0 0 220946.132 0 3 - 220946.132 - - 1s H 0 0 236050.11836 220946.132 6.40% - 1s 0 2 220947.830 0 3 236050.118 220947.830 6.40% - 1s H 27 20 221985.63641 221060.075 0.42% 20.6 2s H 81 17 221750.21488 221060.075 0.31% 9.9 3s * 133 11 10 221476.77211 221135.748 0.15% 8.9 4s * 148 1 13 221475.77318 221448.927 0.01% 13.2 4s Cutting planes: Flow cover: 13 Explored 151 nodes (4408 simplex iterations) in 4.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214757731774e+05, best bound 2.214757731774e+05, gap 0.0%