
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:13:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7169.44.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/grafo7169.44.lp
Reading time = 0.18 seconds
: 115032 rows, 2583 columns, 347309 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 115032 rows, 2583 columns and 347309 nonzeros
Model fingerprint: 0x58a3fe52
Variable types: 50 continuous, 2533 integer (2533 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 28032 rows and 28 columns
Presolve time: 0.82s
Presolved: 87000 rows, 2555 columns, 263750 nonzeros
Variable types: 0 continuous, 2555 integer (2505 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2552 rows, 89552 columns, 266305 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20226    4.6747888e+01   0.000000e+00   7.587941e+04      5s
   41786    4.6720596e+01   0.000000e+00   4.799529e+03     10s
   56361    4.7000000e+01   0.000000e+00   0.000000e+00     14s
   56361    4.7000000e+01   0.000000e+00   0.000000e+00     14s
   56361    4.7000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.700000e+01, 56361 iterations, 12.57 seconds (10.33 work units)
Total elapsed time = 30.50s (DegenMoves)
Total elapsed time = 36.84s (DegenMoves)
Total elapsed time = 41.23s (DegenMoves)

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

     0     0   47.00000    0  764    6.00000   47.00000   683%     -   41s
H    0     0                       8.0000000   47.00000   487%     -   41s
H    0     0                       9.0000000   47.00000   422%     -   41s
     0     0          -    0         9.00000   47.00000   422%     -   50s

Cutting planes:
  Gomory: 20
  Cover: 24
  Clique: 11
  MIR: 85
  GUB cover: 3
  Zero half: 57
  RLT: 47

Explored 1 nodes (79735 simplex iterations) in 50.02 seconds (52.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.700000000000e+01, gap 422.2222%

Wrote result file './lp_solutions/grafo7169.44.sol'

