Build (method = -2) #dp: 394 Step-3' Graph: 30 vertices and 121 arcs (0.00s) Step-4' Graph: 14 vertices and 89 arcs (0.00s) #V4/#V3 = 0.47 #A4/#A3 = 0.74 Ready! (0.00s) Optimize a model with 67 rows, 90 columns and 247 nonzeros Presolve removed 46 rows and 46 columns Presolve time: 0.00s Presolved: 21 rows, 44 columns, 111 nonzeros Variable types: 0 continuous, 44 integer (5 binary) Found heuristic solution: objective 91.0000000 Found heuristic solution: objective 85.0000000 Found heuristic solution: objective 80.0000000 Optimize a model with 21 rows, 44 columns and 111 nonzeros Presolved: 21 rows, 44 columns, 111 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.900e+01 Factor NZ : 2.310e+02 Factor Ops : 3.311e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.99335280e+02 -1.58326245e+02 3.78e+01 2.22e-16 1.24e+01 0s 1 1.26231069e+02 7.39314832e+00 2.94e+00 2.22e-16 1.54e+00 0s 2 8.77100360e+01 5.54313294e+01 5.58e-02 4.44e-16 3.35e-01 0s 3 8.17784287e+01 7.51031291e+01 1.24e-14 3.33e-16 6.88e-02 0s 4 7.97192270e+01 7.90655885e+01 3.55e-15 4.44e-16 6.74e-03 0s Barrier performed 4 iterations in 0.00 seconds Objective cutoff exceeded Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 8.000000000000e+01, best bound 8.000000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 80 Solution: 4 x [53] 4 x [52] 1 x [51] 3 x [50] 3 x [49] 1 x [48] 2 x [47] 1 x [46] 1 x [45] 3 x [44] 1 x [43] 2 x [42] 2 x [41] 2 x [40] 2 x [39] 2 x [38] 1 x [37] 1 x [36] 1 x [35] 1 x [34] 4 x [33] 1 x [32] 1 x [31] 1 x [30] 2 x [29] 1 x [1, 28] 1 x [27] 1 x [2, 27] 1 x [1, 27] 2 x [3, 26] 4 x [25] 1 x [4, 24] 3 x [23] 1 x [4, 23] 1 x [22] 1 x [5, 22] 1 x [6, 21] 2 x [20] 1 x [7, 20] 1 x [7, 19] 1 x [18] 2 x [9, 18] 2 x [8, 17] 1 x [10, 16] 1 x [11, 15] 1 x [14, 14] 1 x [13, 13] 1 x [12] 1 x [12, 12]