
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:55:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11670.41.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/grafo11670.41.lp
Reading time = 0.12 seconds
: 77578 rows, 2439 columns, 235001 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 77578 rows, 2439 columns and 235001 nonzeros
Model fingerprint: 0xd5561552
Variable types: 50 continuous, 2389 integer (2389 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 11190 rows and 20 columns
Presolve time: 0.48s
Presolved: 66388 rows, 2419 columns, 202009 nonzeros
Variable types: 0 continuous, 2419 integer (2369 binary)
Root relaxation presolved: 2404 rows, 68792 columns, 204428 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24929    4.3962096e+01   0.000000e+00   5.976002e+03      5s
   40810    4.4000000e+01   0.000000e+00   0.000000e+00      8s
   40810    4.4000000e+01   0.000000e+00   0.000000e+00      8s
   40810    4.4000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.400000e+01, 40810 iterations, 7.81 seconds (6.68 work units)
Total elapsed time = 17.98s (DegenMoves)
Total elapsed time = 20.17s (DegenMoves)

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

     0     0   44.00000    0  487          -   44.00000      -     -   20s
H    0     0                      12.0000000   44.00000   267%     -   22s
     0     0   44.00000    0  711   12.00000   44.00000   267%     -   31s
     0     0   44.00000    0  677   12.00000   44.00000   267%     -   33s
     0     0   44.00000    0  900   12.00000   44.00000   267%     -   50s

Cutting planes:
  Gomory: 10
  Lift-and-project: 26
  Cover: 17
  Clique: 3
  MIR: 124
  StrongCG: 1
  GUB cover: 1
  Zero half: 31
  RLT: 56

Explored 1 nodes (72828 simplex iterations) in 50.08 seconds (44.06 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 12 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.400000000000e+01, gap 266.6667%

Wrote result file './lp_solutions/grafo11670.41.sol'

