
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:06:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7305.38.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/grafo7305.38.lp
Reading time = 0.19 seconds
: 118395 rows, 2314 columns, 357302 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 118395 rows, 2314 columns and 357302 nonzeros
Model fingerprint: 0xd45e4d6e
Variable types: 49 continuous, 2265 integer (2265 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 36053 rows and 24 columns
Presolve time: 0.92s
Presolved: 82342 rows, 2290 columns, 249631 nonzeros
Variable types: 0 continuous, 2290 integer (2241 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2290 rows, 84632 columns, 251921 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24160    5.2765609e+01   0.000000e+00   5.996321e+03      5s
   46834    5.3000000e+01   0.000000e+00   0.000000e+00     10s
   46834    5.3000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.300000e+01, 46834 iterations, 8.88 seconds (7.02 work units)
Total elapsed time = 10.06s (DegenMoves)
Total elapsed time = 24.85s (DegenMoves)
Total elapsed time = 27.33s (DegenMoves)

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

     0     0   53.00000    0  626    9.00000   53.00000   489%     -   30s
     0     0          -    0         9.00000   53.00000   489%     -   50s

Cutting planes:
  Gomory: 36
  Cover: 32
  Clique: 19
  MIR: 217
  GUB cover: 1
  Zero half: 45
  RLT: 45
  BQP: 2

Explored 1 nodes (75920 simplex iterations) in 50.01 seconds (50.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.300000000000e+01, gap 488.8889%

Wrote result file './lp_solutions/grafo7305.38.sol'

