
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:48:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5571.39.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/grafo5571.39.lp
Reading time = 0.20 seconds
: 121654 rows, 2448 columns, 367204 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 121654 rows, 2448 columns and 367204 nonzeros
Model fingerprint: 0xf9aad652
Variable types: 50 continuous, 2398 integer (2398 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 44853 rows and 67 columns
Presolve time: 0.78s
Presolved: 76801 rows, 2381 columns, 233201 nonzeros
Variable types: 0 continuous, 2381 integer (2331 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2378 rows, 79179 columns, 235582 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21628    5.9927298e+01   0.000000e+00   1.859297e+04      5s
   42580    5.9916914e+01   0.000000e+00   3.661518e+03     10s
   63592    5.9915128e+01   0.000000e+00   4.717980e+02     15s
   76597    6.0000000e+01   0.000000e+00   0.000000e+00     18s
   76597    6.0000000e+01   0.000000e+00   0.000000e+00     18s
   76597    6.0000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 6.000000e+01, 76597 iterations, 17.13 seconds (13.57 work units)
Total elapsed time = 38.50s (DegenMoves)
Total elapsed time = 46.07s (DegenMoves)

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

     0     0   60.00000    0  892    4.00000   60.00000  1400%     -   50s

Explored 1 nodes (101519 simplex iterations) in 50.03 seconds (53.11 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 6.000000000000e+01, gap 1400.0000%

Wrote result file './lp_solutions/grafo5571.39.sol'

