
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:35:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5617.45.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo5617.45.lp
Reading time = 0.14 seconds
: 85094 rows, 2417 columns, 257174 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 85094 rows, 2417 columns and 257174 nonzeros
Model fingerprint: 0x6c810162
Variable types: 47 continuous, 2370 integer (2370 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 14894 rows and 26 columns
Presolve time: 0.58s
Presolved: 70200 rows, 2391 columns, 213030 nonzeros
Variable types: 0 continuous, 2391 integer (2344 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2382 rows, 72582 columns, 215421 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22774    4.3943758e+01   0.000000e+00   6.630153e+03      5s
   45640    4.3928096e+01   0.000000e+00   1.434033e+04     10s
   59822    4.4000000e+01   0.000000e+00   0.000000e+00     13s
   59822    4.4000000e+01   0.000000e+00   0.000000e+00     13s
   59822    4.4000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.400000e+01, 59822 iterations, 12.56 seconds (12.42 work units)
Total elapsed time = 24.24s (DegenMoves)
Total elapsed time = 25.05s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   44.00000    0  586    6.00000   44.00000   633%     -   25s
H    0     0                       9.0000000   44.00000   389%     -   28s
     0     0   44.00000    0  901    9.00000   44.00000   389%     -   43s
     0     0   44.00000    0  871    9.00000   44.00000   389%     -   45s

Cutting planes:
  Gomory: 1
  Lift-and-project: 25
  Cover: 11
  Clique: 1
  MIR: 97
  Zero half: 13
  RLT: 29

Explored 1 nodes (82834 simplex iterations) in 50.25 seconds (43.77 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.400000000000e+01, gap 388.8889%

Wrote result file './lp_solutions/grafo5617.45.sol'

