
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:06:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3939.39.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/grafo3939.39.lp
Reading time = 0.21 seconds
: 131588 rows, 2133 columns, 396569 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 131588 rows, 2133 columns and 396569 nonzeros
Model fingerprint: 0x547ac490
Variable types: 46 continuous, 2087 integer (2087 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]
Found heuristic solution: objective 1.0000000
Presolve removed 46028 rows and 22 columns
Presolve time: 1.00s
Presolved: 85560 rows, 2111 columns, 258826 nonzeros
Variable types: 0 continuous, 2111 integer (2065 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2099 rows, 87659 columns, 260937 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23526    4.6835834e+01   0.000000e+00   2.015282e+04      5s
   50856    4.6818004e+01   0.000000e+00   5.155521e+00     10s
   51841    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   51841    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   51841    4.7000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.700000e+01, 51841 iterations, 9.14 seconds (7.44 work units)
Total elapsed time = 29.91s (DegenMoves)

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

     0     0   47.00000    0  900    7.00000   47.00000   571%     -   50s

Explored 1 nodes (79137 simplex iterations) in 50.03 seconds (65.54 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 1 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.700000000000e+01, gap 571.4286%

Wrote result file './lp_solutions/grafo3939.39.sol'

