Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:01 2013 Optimize a model with 16480 rows, 16080 columns and 64080 nonzeros Presolve removed 40 rows and 0 columns Presolve time: 0.07s Presolved: 16440 rows, 16080 columns, 64040 nonzeros Variable types: 16040 continuous, 40 integer (40 binary) Root relaxation: objective 3.614071e+04, 1861 iterations, 0.41 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 36140.7088 0 33 - 36140.7088 - - 0s H 0 0 44374.000000 36140.7088 18.6% - 0s 0 0 40427.4282 0 6 44374.0000 40427.4282 8.89% - 1s H 0 0 43958.335012 40427.4282 8.03% - 1s H 0 0 41928.000000 40427.4282 3.58% - 1s 0 0 40470.3072 0 4 41928.0000 40470.3072 3.48% - 1s H 0 0 41390.000000 40470.3072 2.22% - 1s H 0 0 40676.000000 40470.3072 0.51% - 1s 0 0 40472.3876 0 2 40676.0000 40472.3876 0.50% - 1s 0 2 40473.7445 0 2 40676.0000 40473.7445 0.50% - 1s * 4 2 3 40627.000000 40622.8618 0.01% 58.8 1s Cutting planes: Gomory: 1 Implied bound: 34 Explored 7 nodes (3392 simplex iterations) in 1.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.062700000000e+04, best bound 4.062700000000e+04, gap 0.0%