Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:20:31 2013 Optimize a model with 1626 rows, 47995 columns and 2269934 nonzeros Presolve removed 58 rows and 490 columns (presolve time = 5s) ... Presolve removed 58 rows and 490 columns Presolve time: 6.47s Presolved: 1568 rows, 47505 columns, 2240029 nonzeros Variable types: 0 continuous, 47505 integer (47505 binary) Found heuristic solution: objective 27051.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8544 1.6875455e+04 5.789831e+02 0.000000e+00 5s 12024 1.6950227e+04 6.739463e+02 0.000000e+00 10s 12961 1.6955000e+04 0.000000e+00 0.000000e+00 12s Root relaxation: objective 1.695500e+04, 12961 iterations, 12.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16955.0000 0 87 27051.0000 16955.0000 37.3% - 19s H 0 0 17239.000000 16955.0000 1.65% - 22s 0 0 16955.0000 0 62 17239.0000 16955.0000 1.65% - 25s H 0 0 17235.000000 16955.0000 1.62% - 37s 0 0 16955.0000 0 56 17235.0000 16955.0000 1.62% - 47s H 0 0 17005.000000 16955.0000 0.29% - 47s H 0 0 16991.000000 16955.0000 0.21% - 48s * 0 0 0 16955.000000 16955.0000 0.0% - 49s Cutting planes: Clique: 2 Zero half: 4 Explored 0 nodes (27955 simplex iterations) in 49.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.695500000000e+04, best bound 1.695500000000e+04, gap 0.0%