
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:55:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3415.49.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/grafo3415.49.lp
Reading time = 0.42 seconds
: 225957 rows, 3675 columns, 681490 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 225957 rows, 3675 columns and 681490 nonzeros
Model fingerprint: 0x9b9ce447
Variable types: 62 continuous, 3613 integer (3613 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]
Presolve removed 64557 rows and 3 columns
Presolve time: 1.79s
Presolved: 161400 rows, 3672 columns, 488545 nonzeros
Variable types: 0 continuous, 3672 integer (3610 binary)
Found heuristic solution: objective 15.0000000
Root relaxation presolved: 3645 rows, 165045 columns, 492217 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11692    8.3789885e+01   0.000000e+00   3.483686e+06      5s
   24938    6.4983189e+01   0.000000e+00   8.768555e+05     10s
   36305    6.2939062e+01   0.000000e+00   1.423398e+05     15s
   46786    6.2924199e+01   0.000000e+00   5.648787e+04     20s
   57244    6.2915818e+01   0.000000e+00   2.947593e+04     25s
   68342    6.2909286e+01   0.000000e+00   4.647725e+04     30s
   78182    6.2905691e+01   0.000000e+00   1.026635e+04     35s
   88641    6.2902862e+01   0.000000e+00   2.009356e+04     40s
   99101    6.2900995e+01   0.000000e+00   1.882021e+04     45s

Root relaxation: time limit, 108614 iterations, 47.76 seconds (33.22 work units)

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

     0     0          -    0        15.00000  390.00000  2500%     -   50s

Explored 1 nodes (108614 simplex iterations) in 50.05 seconds (35.12 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 15 

Time limit reached
Best objective 1.500000000000e+01, best bound 3.900000000000e+02, gap 2500.0000%

Wrote result file './lp_solutions/grafo3415.49.sol'

