
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:58:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7442.45.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/grafo7442.45.lp
Reading time = 0.17 seconds
: 104742 rows, 2348 columns, 316011 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 104742 rows, 2348 columns and 316011 nonzeros
Model fingerprint: 0x5d0ba17e
Variable types: 46 continuous, 2302 integer (2302 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 25835 rows and 27 columns
Presolve time: 0.77s
Presolved: 78907 rows, 2321 columns, 238870 nonzeros
Variable types: 0 continuous, 2321 integer (2275 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2321 rows, 81228 columns, 241191 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25003    4.2815693e+01   0.000000e+00   2.895235e+03      5s
   31121    4.3000000e+01   0.000000e+00   0.000000e+00      6s
   31121    4.3000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.300000e+01, 31121 iterations, 5.39 seconds (4.53 work units)
Total elapsed time = 18.88s (DegenMoves)
Total elapsed time = 22.84s (DegenMoves)
Total elapsed time = 32.64s (DegenMoves)

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

     0     0   43.00000    0  586    8.00000   43.00000   438%     -   33s
H    0     0                      10.0000000   43.00000   330%     -   33s
H    0     0                      13.0000000   43.00000   231%     -   33s
     0     0   43.00000    0  842   13.00000   43.00000   231%     -   48s
     0     0   43.00000    0  857   13.00000   43.00000   231%     -   49s

Cutting planes:
  Gomory: 4
  Cover: 15
  Clique: 12
  MIR: 52
  GUB cover: 1
  Zero half: 12
  RLT: 28

Explored 1 nodes (68423 simplex iterations) in 50.03 seconds (60.19 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 13 10 8 1 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.300000000000e+01, gap 230.7692%

Wrote result file './lp_solutions/grafo7442.45.sol'

