
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:46:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5691.46.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/grafo5691.46.lp
Reading time = 0.29 seconds
: 144015 rows, 2392 columns, 433818 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 144015 rows, 2392 columns and 433818 nonzeros
Model fingerprint: 0x1b91372a
Variable types: 44 continuous, 2348 integer (2348 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 51685 rows and 19 columns
Presolve time: 1.28s
Presolved: 92330 rows, 2373 columns, 279244 nonzeros
Variable types: 0 continuous, 2373 integer (2329 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2370 rows, 94700 columns, 281617 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16110    4.2868635e+01   0.000000e+00   1.306016e+06      5s
   36442    4.2778679e+01   0.000000e+00   2.902145e+04     10s
   55448    4.2766657e+01   0.000000e+00   4.461893e+02     15s
   63609    4.3000000e+01   0.000000e+00   0.000000e+00     17s
   63609    4.3000000e+01   0.000000e+00   0.000000e+00     17s
   63609    4.3000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 4.300000e+01, 63609 iterations, 15.77 seconds (9.24 work units)
Total elapsed time = 28.06s (DegenMoves)

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

     0     0   43.00000    0  370    7.00000   43.00000   514%     -   29s
H    0     0                       8.0000000   43.00000   437%     -   29s
     0     0   43.00000    0  632    8.00000   43.00000   437%     -   38s
     0     0   43.00000    0  592    8.00000   43.00000   437%     -   41s
     0     0   43.00000    0  633    8.00000   43.00000   437%     -   50s

Cutting planes:
  Gomory: 13
  Lift-and-project: 35
  Cover: 20
  Clique: 19
  MIR: 127
  StrongCG: 1
  GUB cover: 2
  Zero half: 56
  RLT: 59

Explored 1 nodes (83200 simplex iterations) in 50.04 seconds (38.84 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo5691.46.sol'

