
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:44:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3839.44.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/grafo3839.44.lp
Reading time = 0.15 seconds
: 95525 rows, 2217 columns, 288260 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 95525 rows, 2217 columns and 288260 nonzeros
Model fingerprint: 0x033615c4
Variable types: 44 continuous, 2173 integer (2173 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 23736 rows and 25 columns
Presolve time: 0.67s
Presolved: 71789 rows, 2192 columns, 217408 nonzeros
Variable types: 0 continuous, 2192 integer (2148 binary)
Root relaxation presolved: 2192 rows, 73981 columns, 219600 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26800    4.0763649e+01   0.000000e+00   5.383015e+03      5s
   33041    4.1000000e+01   0.000000e+00   0.000000e+00      6s
   33041    4.1000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.100000e+01, 33041 iterations, 5.36 seconds (4.64 work units)
Total elapsed time = 13.91s (DegenMoves)
Total elapsed time = 15.07s (DegenMoves)

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

     0     0   41.00000    0  448          -   41.00000      -     -   15s
H    0     0                       8.0000000   41.00000   412%     -   15s
H    0     0                      10.0000000   41.00000   310%     -   15s
     0     0   41.00000    0  603   10.00000   41.00000   310%     -   21s
H    0     0                      11.0000000   41.00000   273%     -   22s
     0     0   41.00000    0  607   11.00000   41.00000   273%     -   22s
     0     0   41.00000    0  510   11.00000   41.00000   273%     -   37s
H    0     0                      12.0000000   41.00000   242%     -   37s
     0     0   41.00000    0  483   12.00000   41.00000   242%     -   38s
     0     0   41.00000    0  596   12.00000   41.00000   242%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 27
  Clique: 11
  MIR: 110
  StrongCG: 3
  GUB cover: 3
  Zero half: 38
  RLT: 61

Explored 1 nodes (68994 simplex iterations) in 50.12 seconds (45.65 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 11 10 8 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.100000000000e+01, gap 241.6667%

Wrote result file './lp_solutions/grafo3839.44.sol'

