Build (method = -2) #dp: 174 Step-3' Graph: 32 vertices and 87 arcs (0.00s) Step-4' Graph: 5 vertices and 33 arcs (0.00s) #V4/#V3 = 0.16 #A4/#A3 = 0.38 Ready! (0.00s) Optimize a model with 15 rows, 34 columns and 98 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 13 rows, 32 columns, 94 nonzeros Variable types: 0 continuous, 32 integer (0 binary) Found heuristic solution: objective 999.0000000 Found heuristic solution: objective 871.0000000 Optimize a model with 13 rows, 32 columns and 94 nonzeros Presolved: 13 rows, 32 columns, 94 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.300e+01 Factor NZ : 9.100e+01 Factor Ops : 8.190e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.02920107e+03 -2.63955061e+03 2.35e+02 0.00e+00 1.34e+02 0s 1 6.27585226e+02 -7.98023690e+02 2.27e-13 2.22e-16 1.99e+01 0s 2 3.94696974e+02 3.50717090e+01 1.42e-13 1.11e-16 4.90e+00 0s 3 3.33931222e+02 3.15948342e+02 3.77e-14 1.46e-16 2.43e-01 0s 4 3.33334429e+02 3.33322190e+02 1.51e-13 2.22e-16 1.65e-04 0s 5 3.33333333e+02 3.33333333e+02 1.25e-13 3.33e-16 1.66e-10 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 3.33333333e+02 Root relaxation: objective 3.333333e+02, 26 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 333.33333 0 3 871.00000 333.33333 61.7% - 0s H 0 0 334.0000000 333.33333 0.20% - 0s Explored 0 nodes (37 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.340000000000e+02, best bound 3.340000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 334 Solution: 92 x [4, 5, 8] 3 x [5, 6, 8] 20 x [1, 2, 5] 14 x [2, 5, 9] 1 x [1, 3, 10] 1 x [2, 3, 7] 18 x [2, 3, 9] 1 x [10] 112 x [7, 9, 10] 8 x [8, 9, 9] 60 x [1, 6, 7] 4 x [6, 9, 9]