
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:48:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3919.38.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/grafo3919.38.lp
Reading time = 0.21 seconds
: 126009 rows, 2286 columns, 380109 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 126009 rows, 2286 columns and 380109 nonzeros
Model fingerprint: 0x3bf0e399
Variable types: 49 continuous, 2237 integer (2237 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 -0.0000000
Presolve removed 39770 rows and 33 columns
Presolve time: 1.11s
Presolved: 86239 rows, 2253 columns, 261214 nonzeros
Variable types: 0 continuous, 2253 integer (2204 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2253 rows, 88492 columns, 263467 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20174    4.9756692e+01   0.000000e+00   1.764262e+04      5s
   44208    4.9731383e+01   0.000000e+00   5.124389e+02     10s
   50426    5.0000000e+01   0.000000e+00   0.000000e+00     11s
   50426    5.0000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.000000e+01, 50426 iterations, 10.17 seconds (8.25 work units)
Total elapsed time = 24.38s (DegenMoves)
Total elapsed time = 29.50s (DegenMoves)
Total elapsed time = 30.36s (DegenMoves)

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

     0     0   50.00000    0  599    7.00000   50.00000   614%     -   30s
     0     0          -    0         7.00000   50.00000   614%     -   50s

Cutting planes:
  Gomory: 33
  Cover: 26
  Clique: 18
  MIR: 108
  GUB cover: 3
  Zero half: 25
  RLT: 37
  BQP: 1

Explored 1 nodes (75125 simplex iterations) in 50.02 seconds (51.45 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.000000000000e+01, gap 614.2857%

Wrote result file './lp_solutions/grafo3919.38.sol'

