
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:15:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5458.41.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/grafo5458.41.lp
Reading time = 0.19 seconds
: 117608 rows, 2805 columns, 355607 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 117608 rows, 2805 columns and 355607 nonzeros
Model fingerprint: 0x03ce83bd
Variable types: 56 continuous, 2749 integer (2749 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, 6e+01]
Found heuristic solution: objective 3.0000000
Presolve removed 23464 rows and 2 columns
Presolve time: 0.67s
Presolved: 94144 rows, 2803 columns, 285799 nonzeros
Variable types: 0 continuous, 2803 integer (2747 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2767 rows, 96911 columns, 288602 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18313    5.0589389e+01   0.000000e+00   4.732703e+04      5s
   37330    5.0552844e+01   0.000000e+00   4.486130e+04     10s
   55942    5.0543642e+01   0.000000e+00   1.416885e+04     15s
   74158    5.0542049e+01   0.000000e+00   3.360603e-01     20s
   74286    5.1000000e+01   0.000000e+00   0.000000e+00     20s
   74286    5.1000000e+01   0.000000e+00   0.000000e+00     20s
   74286    5.1000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 5.100000e+01, 74286 iterations, 19.38 seconds (16.60 work units)
Total elapsed time = 43.11s (DegenMoves)
Total elapsed time = 47.71s (DegenMoves)

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

     0     0   51.00000    0 1013   13.00000   51.00000   292%     -   50s

Explored 1 nodes (94711 simplex iterations) in 50.03 seconds (51.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 3 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.100000000000e+01, gap 292.3077%

Wrote result file './lp_solutions/grafo5458.41.sol'

