Build (method = -2) #dp: 229 Step-3' Graph: 27 vertices and 109 arcs (0.00s) Step-4' Graph: 17 vertices and 89 arcs (0.00s) #V4/#V3 = 0.63 #A4/#A3 = 0.82 Ready! (0.00s) Optimize a model with 37 rows, 90 columns and 242 nonzeros Presolve removed 12 rows and 14 columns Presolve time: 0.00s Presolved: 25 rows, 76 columns, 203 nonzeros Variable types: 0 continuous, 76 integer (0 binary) Found heuristic solution: objective 191.0000000 Found heuristic solution: objective 172.0000000 Optimize a model with 25 rows, 76 columns and 203 nonzeros Presolve removed 1 rows and 1 columns Presolved: 24 rows, 75 columns, 201 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 9.500e+01 Factor NZ : 2.220e+02 Factor Ops : 2.560e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.57396994e+02 -1.00533106e+03 1.31e+03 2.22e-16 3.50e+01 0s 1 2.45022260e+02 -3.33290291e+02 9.64e+01 5.55e-16 4.87e+00 0s 2 1.49730339e+02 -5.79034839e+01 6.63e+00 5.44e-15 1.34e+00 0s 3 1.14763170e+02 6.15967945e+01 2.46e-02 7.77e-16 3.32e-01 0s 4 1.03273011e+02 9.40932144e+01 2.52e-03 3.33e-16 5.74e-02 0s 5 1.01563577e+02 1.00046509e+02 2.88e-04 4.63e-16 9.48e-03 0s 6 1.01272880e+02 1.01180044e+02 5.04e-05 3.48e-16 5.80e-04 0s 7 1.01250114e+02 1.01249984e+02 9.68e-08 3.33e-16 8.11e-07 0s 8 1.01250000e+02 1.01250000e+02 5.09e-12 4.82e-16 8.11e-10 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.01250000e+02 Root relaxation: objective 1.012500e+02, 35 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 101.25000 0 5 172.00000 101.25000 41.1% - 0s H 0 0 102.0000000 101.25000 0.74% - 0s Explored 0 nodes (42 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.020000000000e+02, best bound 1.020000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 102 Solution: 5 x [12] 13 x [11] 2 x [7] 3 x [9, 14] 13 x [9, 16] 4 x [6, 14] 9 x [1, 5] 13 x [4, 19] 1 x [1, 19] 1 x [15, 17] 1 x [1, 15] 3 x [3, 20] 6 x [17, 20] 8 x [10, 10] 1 x [1, 4, 8] 1 x [1] 1 x [1, 1] 4 x [13, 16, 18] 6 x [8, 13, 18] 1 x [2, 13] 6 x [2, 2, 13]