
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:44:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7439.45.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/grafo7439.45.lp
Reading time = 0.14 seconds
: 88649 rows, 2313 columns, 267663 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 88649 rows, 2313 columns and 267663 nonzeros
Model fingerprint: 0x0847ac32
Variable types: 45 continuous, 2268 integer (2268 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 18583 rows and 22 columns
Presolve time: 0.60s
Presolved: 70066 rows, 2291 columns, 212259 nonzeros
Variable types: 0 continuous, 2291 integer (2246 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2291 rows, 72357 columns, 214550 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25056    4.9735896e+01   0.000000e+00   1.633733e+04      5s
   49146    4.9719002e+01   0.000000e+00   2.147287e+03     10s
   53972    5.0000000e+01   0.000000e+00   0.000000e+00     11s
   53972    5.0000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.000000e+01, 53972 iterations, 10.44 seconds (8.21 work units)
Total elapsed time = 26.40s (DegenMoves)
Total elapsed time = 30.15s (DegenMoves)

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

     0     0   50.00000    0  726    7.00000   50.00000   614%     -   30s
H    0     0                       8.0000000   50.00000   525%     -   30s
     0     0   50.00000    0  992    8.00000   50.00000   525%     -   46s
     0     0   50.00000    0  973    8.00000   50.00000   525%     -   48s

Cutting planes:
  Gomory: 4
  Cover: 15
  Clique: 3
  MIR: 144
  Zero half: 25
  RLT: 58
  BQP: 2

Explored 1 nodes (80911 simplex iterations) in 50.20 seconds (44.74 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 5.000000000000e+01, gap 525.0000%

Wrote result file './lp_solutions/grafo7439.45.sol'

