
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:16:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7131.43.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/grafo7131.43.lp
Reading time = 0.40 seconds
: 216754 rows, 2777 columns, 652865 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 216754 rows, 2777 columns and 652865 nonzeros
Model fingerprint: 0x34f47dc3
Variable types: 53 continuous, 2724 integer (2724 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 79403 rows and 20 columns
Presolve time: 1.96s
Presolved: 137351 rows, 2757 columns, 415034 nonzeros
Variable types: 0 continuous, 2757 integer (2704 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2757 rows, 140108 columns, 417791 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11475    8.8522224e+01   0.000000e+00   2.815966e+05      5s
   27333    5.5741039e+01   0.000000e+00   1.315840e+05     10s
   43245    5.5689269e+01   0.000000e+00   1.327125e+04     15s
   57321    5.5681052e+01   0.000000e+00   4.461654e+02     20s
   61942    5.6000000e+01   0.000000e+00   0.000000e+00     22s
   61942    5.6000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.600000e+01, 61942 iterations, 19.38 seconds (11.96 work units)
Total elapsed time = 48.58s (DegenMoves)

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

     0     0   56.00000    0  757    8.00000   56.00000   600%     -   50s

Explored 1 nodes (74520 simplex iterations) in 50.07 seconds (39.11 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.600000000000e+01, gap 600.0000%

Wrote result file './lp_solutions/grafo7131.43.sol'

