Build (method = -2) #dp: 2799 Step-3' Graph: 130 vertices and 382 arcs (0.02s) Step-4' Graph: 14 vertices and 150 arcs (0.02s) #V4/#V3 = 0.11 #A4/#A3 = 0.39 Ready! (0.02s) Optimize a model with 55 rows, 151 columns and 430 nonzeros Presolve removed 4 rows and 4 columns Presolve time: 0.00s Presolved: 51 rows, 147 columns, 420 nonzeros Variable types: 0 continuous, 147 integer (37 binary) Found heuristic solution: objective 48.0000000 Optimize a model with 51 rows, 147 columns and 420 nonzeros Presolved: 51 rows, 147 columns, 420 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.560e+02 Factor NZ : 6.130e+02 Factor Ops : 1.182e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.11347245e+02 -3.21726399e+02 4.93e+01 2.95e-02 4.52e+00 0s 1 7.09481411e+01 -1.12363108e+02 1.21e-13 3.33e-16 5.90e-01 0s 2 3.94759016e+01 1.77885007e+01 8.08e-14 3.33e-16 6.82e-02 0s 3 3.33972499e+01 3.29419970e+01 5.14e-14 1.11e-16 1.42e-03 0s 4 3.33333986e+01 3.33329434e+01 4.80e-14 1.11e-16 1.42e-06 0s 5 3.33333333e+01 3.33333333e+01 1.20e-14 1.35e-16 1.42e-12 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 3.33333333e+01 Root relaxation: objective 3.333333e+01, 115 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33.33333 0 4 48.00000 33.33333 30.6% - 0s H 0 0 34.0000000 33.33333 1.96% - 0s Explored 0 nodes (136 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.01 seconds Total run time: 0.04 seconds Objective: 34 Solution: 1 x [41] 1 x [24, 39, 40] 3 x [9, 28, 38] 1 x [22, 36, 37] 4 x [7, 16, 35] 4 x [14, 19, 34] 1 x [11, 30, 33] 2 x [21, 23, 32] 1 x [18, 18, 31] 1 x [25, 29, 29] 1 x [10, 23, 27] 2 x [13, 17, 26] 2 x [6, 12, 22] 2 x [5, 5, 20] 1 x [10, 14, 19] 1 x [10, 13, 16] 1 x [10, 12, 15] 2 x [2, 4, 14] 1 x [3, 7, 8] 1 x [1, 6, 8] 1 x [1, 5, 8]