
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:00:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6901.43.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/grafo6901.43.lp
Reading time = 0.16 seconds
: 105078 rows, 2510 columns, 317423 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 105078 rows, 2510 columns and 317423 nonzeros
Model fingerprint: 0x90750d8c
Variable types: 50 continuous, 2460 integer (2460 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 24186 rows and 28 columns
Presolve time: 0.72s
Presolved: 80892 rows, 2482 columns, 245348 nonzeros
Variable types: 0 continuous, 2482 integer (2432 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2479 rows, 83371 columns, 247830 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21603    5.0972553e+01   0.000000e+00   1.534834e+05      5s
   41972    5.0957217e+01   0.000000e+00   1.148998e+04     10s
   62915    5.0950634e+01   0.000000e+00   7.803756e+03     15s
   83237    5.0948487e+01   0.000000e+00   8.271143e+02     20s
   87905    5.1000000e+01   0.000000e+00   0.000000e+00     21s
   87905    5.1000000e+01   0.000000e+00   0.000000e+00     21s
   87905    5.1000000e+01   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 5.100000e+01, 87905 iterations, 20.38 seconds (17.61 work units)
Total elapsed time = 36.80s (DegenMoves)

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

     0     0   51.00000    0  627    7.00000   51.00000   629%     -   50s

Explored 1 nodes (112099 simplex iterations) in 50.02 seconds (57.04 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.100000000000e+01, gap 628.5714%

Wrote result file './lp_solutions/grafo6901.43.sol'

