
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:56:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5240.43.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/grafo5240.43.lp
Reading time = 0.28 seconds
: 135913 rows, 2718 columns, 410219 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 135913 rows, 2718 columns and 410219 nonzeros
Model fingerprint: 0x86da9b1f
Variable types: 52 continuous, 2666 integer (2666 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 36912 rows and 12 columns
Presolve time: 1.11s
Presolved: 99001 rows, 2706 columns, 299982 nonzeros
Variable types: 0 continuous, 2706 integer (2654 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2695 rows, 101696 columns, 302688 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16910    5.8005105e+01   0.000000e+00   1.332833e+05      5s
   31811    5.3973098e+01   0.000000e+00   1.558065e+04     10s
   48611    5.3961066e+01   0.000000e+00   5.253044e+04     15s
   64151    5.3958452e+01   0.000000e+00   2.358955e+03     20s
   76588    5.4000000e+01   0.000000e+00   0.000000e+00     24s
   76588    5.4000000e+01   0.000000e+00   0.000000e+00     24s
   76588    5.4000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 5.400000e+01, 76588 iterations, 22.84 seconds (14.36 work units)
Total elapsed time = 48.31s (DegenMoves)

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

     0     0   54.00000    0  829   11.00000   54.00000   391%     -   50s

Explored 1 nodes (92654 simplex iterations) in 50.05 seconds (38.06 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 11 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.400000000000e+01, gap 390.9091%

Wrote result file './lp_solutions/grafo5240.43.sol'

