Build (method = -2) #dp: 1543 Step-3' Graph: 55 vertices and 194 arcs (0.01s) Step-4' Graph: 20 vertices and 124 arcs (0.01s) #V4/#V3 = 0.36 #A4/#A3 = 0.64 Ready! (0.01s) Optimize a model with 80 rows, 125 columns and 340 nonzeros Presolve removed 32 rows and 32 columns Presolve time: 0.00s Presolved: 48 rows, 93 columns, 246 nonzeros Variable types: 0 continuous, 93 integer (0 binary) Found heuristic solution: objective 2864.0000000 Found heuristic solution: objective 1786.0000000 Optimize a model with 48 rows, 93 columns and 246 nonzeros Presolved: 48 rows, 93 columns, 246 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 9.300e+01 Factor NZ : 6.520e+02 Factor Ops : 1.221e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.39950178e+04 -1.82455349e+04 1.58e+04 1.11e-16 6.03e+02 0s 1 7.19686565e+03 -4.54565871e+03 1.62e+03 8.88e-16 8.10e+01 0s 2 2.40536537e+03 7.28675047e+02 3.92e+01 1.22e-15 8.06e+00 0s 3 1.68984218e+03 1.37506828e+03 8.78e-02 2.44e-15 1.46e+00 0s 4 1.59967591e+03 1.55299728e+03 1.57e-02 1.44e-15 2.16e-01 0s 5 1.58876392e+03 1.58716273e+03 9.98e-05 1.33e-15 7.41e-03 0s 6 1.58800004e+03 1.58799991e+03 1.49e-08 1.11e-15 6.30e-07 0s 7 1.58800000e+03 1.58800000e+03 6.19e-12 9.30e-16 6.36e-13 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.58800000e+03 Root relaxation: objective 1.588000e+03, 44 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1588.0000000 1588.00000 0.0% - 0s Explored 0 nodes (44 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.588000000000e+03, best bound 1.588000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 1588 Solution: 95 x [45] 74 x [25] 100 x [29] 15 x [58] 1 x [31] 10 x [11, 31] 73 x [11, 52] 22 x [26] 10 x [26, 57] 27 x [47, 48] 4 x [48, 57] 35 x [48, 50] 4 x [24, 33] 65 x [17, 33] 13 x [27, 39] 57 x [24, 39] 1 x [4, 41] 3 x [41, 46] 24 x [5, 41] 52 x [35, 46] 18 x [18, 55] 71 x [13, 55] 2 x [6, 55] 27 x [28, 30] 13 x [16, 28] 37 x [8, 21] 15 x [34, 44] 1 x [44, 49] 8 x [19, 44] 69 x [4, 56] 4 x [10, 12] 95 x [12, 59] 30 x [10, 42] 13 x [3, 22] 60 x [40, 49] 1 x [22, 43] 53 x [19, 43] 73 x [32, 34] 49 x [9, 53] 1 x [15, 36] 16 x [9, 36] 3 x [2, 15] 37 x [38, 51] 4 x [7, 20] 11 x [20, 23] 25 x [9, 54] 60 x [1, 23] 1 x [9, 15] 6 x [9, 51] 13 x [8, 14] 1 x [4, 14] 7 x [14, 27] 8 x [4, 60] 71 x [27, 37]