Build (method = -2) #dp: 314 Step-3' Graph: 67 vertices and 194 arcs (0.00s) Step-4' Graph: 34 vertices and 128 arcs (0.00s) #V4/#V3 = 0.51 #A4/#A3 = 0.66 Ready! (0.00s) Optimize a model with 54 rows, 129 columns and 323 nonzeros Presolve removed 18 rows and 25 columns Presolve time: 0.00s Presolved: 36 rows, 104 columns, 265 nonzeros Variable types: 0 continuous, 104 integer (0 binary) Found heuristic solution: objective 125.0000000 Optimize a model with 36 rows, 104 columns and 265 nonzeros Presolved: 36 rows, 104 columns, 265 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.780e+02 Factor NZ : 4.800e+02 Factor Ops : 7.578e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.90834253e+02 -1.62873723e+03 1.16e+03 2.22e-16 3.38e+01 0s 1 1.94559103e+02 -5.97999070e+02 1.60e+02 2.55e-15 6.24e+00 0s 2 1.25020046e+02 -8.11751150e+01 1.89e-01 1.91e-14 9.57e-01 0s 3 1.03694889e+02 4.62361757e+01 1.53e-03 6.33e-15 2.66e-01 0s 4 9.61543467e+01 8.67036412e+01 2.29e-04 6.45e-16 4.38e-02 0s 5 9.50820117e+01 9.46982274e+01 2.95e-05 9.63e-16 1.78e-03 0s 6 9.50005090e+01 9.49997605e+01 3.16e-08 1.02e-15 3.47e-06 0s 7 9.50000000e+01 9.50000000e+01 1.29e-12 1.27e-15 3.57e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 9.50000000e+01 Root relaxation: objective 9.500000e+01, 67 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 95.0000000 95.00000 0.0% - 0s Explored 0 nodes (67 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.500000000000e+01, best bound 9.500000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 95 Solution: 1 x [1, 19, 20] 11 x [2] 2 x [2, 18] 3 x [3] 14 x [3, 18, 19] 8 x [4, 16] 5 x [5, 15] 3 x [5, 16] 7 x [6, 13] 3 x [6, 14] 1 x [7, 13, 20] 6 x [7, 15] 3 x [8, 12] 3 x [8, 15] 5 x [9, 14] 1 x [9, 14, 19, 20] 7 x [10, 13] 3 x [10, 14, 17] 3 x [11, 16, 20] 6 x [11, 20]