
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:20:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5980.40.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/grafo5980.40.lp
Reading time = 0.16 seconds
: 99715 rows, 2351 columns, 301230 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 99715 rows, 2351 columns and 301230 nonzeros
Model fingerprint: 0xd50a750d
Variable types: 49 continuous, 2302 integer (2302 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 5.0000000
Presolve removed 25118 rows and 31 columns
Presolve time: 0.71s
Presolved: 74597 rows, 2320 columns, 226426 nonzeros
Variable types: 0 continuous, 2320 integer (2271 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2317 rows, 76914 columns, 228746 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23358    4.6708111e+01   0.000000e+00   7.709298e+03      5s
   47316    4.6695496e+01   0.000000e+00   1.473085e+02     10s
   50440    4.7000000e+01   0.000000e+00   0.000000e+00     11s
   50440    4.7000000e+01   0.000000e+00   0.000000e+00     11s
   50440    4.7000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.700000e+01, 50440 iterations, 9.93 seconds (8.85 work units)
Total elapsed time = 22.05s (DegenMoves)
Total elapsed time = 25.82s (DegenMoves)

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

     0     0   47.00000    0  603   11.00000   47.00000   327%     -   26s
H    0     0                      15.0000000   47.00000   213%     -   26s
H    0     0                      17.0000000   47.00000   176%     -   48s
     0     0   47.00000    0  891   17.00000   47.00000   176%     -   48s
     0     0          -    0        17.00000   47.00000   176%     -   50s

Cutting planes:
  Gomory: 9
  Cover: 2
  Clique: 20
  MIR: 55
  Zero half: 9
  RLT: 27
  BQP: 1

Explored 1 nodes (77456 simplex iterations) in 50.07 seconds (47.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 17 15 11 5 

Time limit reached
Best objective 1.700000000000e+01, best bound 4.700000000000e+01, gap 176.4706%

Wrote result file './lp_solutions/grafo5980.40.sol'

