
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:46:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4067.44.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/grafo4067.44.lp
Reading time = 0.22 seconds
: 140078 rows, 2427 columns, 422236 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 140078 rows, 2427 columns and 422236 nonzeros
Model fingerprint: 0x20ee3afd
Variable types: 48 continuous, 2379 integer (2379 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]
Found heuristic solution: objective 2.0000000
Presolve removed 43720 rows and 32 columns
Presolve time: 1.10s
Presolved: 96358 rows, 2395 columns, 291411 nonzeros
Variable types: 0 continuous, 2395 integer (2347 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2395 rows, 98753 columns, 293806 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21701    4.5785198e+01   0.000000e+00   4.861382e+04      5s
   44875    4.6000000e+01   0.000000e+00   0.000000e+00     10s
   44875    4.6000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.600000e+01, 44875 iterations, 8.58 seconds (6.93 work units)
Total elapsed time = 28.00s (DegenMoves)

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

     0     0   46.00000    0  561    7.00000   46.00000   557%     -   30s
H    0     0                       8.0000000   46.00000   475%     -   30s
     0     0   46.00000    0  735    8.00000   46.00000   475%     -   44s
     0     0   46.00000    0  764    8.00000   46.00000   475%     -   46s

Cutting planes:
  Gomory: 3
  Lift-and-project: 28
  Cover: 16
  Clique: 10
  MIR: 114
  GUB cover: 1
  Zero half: 44
  RLT: 31
  BQP: 2

Explored 1 nodes (66102 simplex iterations) in 50.16 seconds (44.40 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 2 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.600000000000e+01, gap 475.0000%

Wrote result file './lp_solutions/grafo4067.44.sol'

