
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:39:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2622.38.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/grafo2622.38.lp
Reading time = 0.37 seconds
: 231539 rows, 2257 columns, 696619 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 231539 rows, 2257 columns and 696619 nonzeros
Model fingerprint: 0x989d977e
Variable types: 47 continuous, 2210 integer (2210 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 2.0000000
Presolve removed 99253 rows and 15 columns
Presolve time: 1.68s
Presolved: 132286 rows, 2242 columns, 399106 nonzeros
Variable types: 0 continuous, 2242 integer (2195 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2242 rows, 134528 columns, 401348 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20198    8.6497723e+01   0.000000e+00   1.070992e+06      5s
   43991    5.9836310e+01   0.000000e+00   2.195431e+05     10s
   67761    5.9778995e+01   0.000000e+00   3.518642e+04     15s
   86008    6.0000000e+01   0.000000e+00   0.000000e+00     19s
   86008    6.0000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 6.000000e+01, 86008 iterations, 17.08 seconds (12.61 work units)
Total elapsed time = 33.34s (DegenMoves)
Total elapsed time = 35.70s (DegenMoves)

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

     0     0   60.00000    0  427   12.00000   60.00000   400%     -   36s
H    0     0                      14.0000000   60.00000   329%     -   37s
     0     0          -    0        14.00000   60.00000   329%     -   50s

Cutting planes:
  Gomory: 33
  Cover: 54
  Clique: 46
  MIR: 253
  StrongCG: 2
  GUB cover: 4
  Zero half: 59
  RLT: 91
  BQP: 7

Explored 1 nodes (102023 simplex iterations) in 50.03 seconds (49.05 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 12 2 

Time limit reached
Best objective 1.400000000000e+01, best bound 6.000000000000e+01, gap 328.5714%

Wrote result file './lp_solutions/grafo2622.38.sol'

