
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:38:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6804.48.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/grafo6804.48.lp
Reading time = 0.14 seconds
: 92591 rows, 2750 columns, 280014 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 92591 rows, 2750 columns and 280014 nonzeros
Model fingerprint: 0xcdefefff
Variable types: 52 continuous, 2698 integer (2698 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 8514 rows and 1 columns
Presolve time: 0.52s
Presolved: 84077 rows, 2749 columns, 254837 nonzeros
Variable types: 0 continuous, 2749 integer (2697 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2701 rows, 86778 columns, 257586 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21920    4.4970837e+01   0.000000e+00   2.011604e+04      5s
   42801    4.4951692e+01   0.000000e+00   2.255802e+04     10s
   62601    4.4945392e+01   0.000000e+00   2.019390e+03     15s
   81851    4.5000000e+01   0.000000e+00   0.000000e+00     20s
   81851    4.5000000e+01   0.000000e+00   0.000000e+00     20s
   81851    4.5000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 4.500000e+01, 81851 iterations, 19.19 seconds (14.53 work units)
Total elapsed time = 20.13s (DegenMoves)
Total elapsed time = 44.40s (DegenMoves)

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

     0     0   45.00000    0 1061    4.00000   45.00000  1025%     -   50s

Explored 1 nodes (107589 simplex iterations) in 50.03 seconds (48.19 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.500000000000e+01, gap 1025.0000%

Wrote result file './lp_solutions/grafo6804.48.sol'

