
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:18:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5504.40.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/grafo5504.40.lp
Reading time = 0.14 seconds
: 88259 rows, 2411 columns, 267005 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 88259 rows, 2411 columns and 267005 nonzeros
Model fingerprint: 0xc1b1f00c
Variable types: 50 continuous, 2361 integer (2361 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 17434 rows and 14 columns
Presolve time: 0.51s
Presolved: 70825 rows, 2397 columns, 215288 nonzeros
Variable types: 0 continuous, 2397 integer (2347 binary)
Root relaxation presolved: 2393 rows, 73218 columns, 217685 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23539    4.5705113e+01   0.000000e+00   2.686302e+03      5s
   37263    4.6000000e+01   0.000000e+00   0.000000e+00      8s
   37263    4.6000000e+01   0.000000e+00   0.000000e+00      8s
   37263    4.6000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.600000e+01, 37263 iterations, 7.27 seconds (6.07 work units)
Total elapsed time = 14.54s (DegenMoves)
Total elapsed time = 17.13s (DegenMoves)

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

     0     0   46.00000    0  475          -   46.00000      -     -   19s
H    0     0                      11.0000000   46.00000   318%     -   19s
H    0     0                      13.0000000   46.00000   254%     -   19s
H    0     0                      14.0000000   46.00000   229%     -   19s
     0     0   46.00000    0  692   14.00000   46.00000   229%     -   30s
     0     0   46.00000    0  700   14.00000   46.00000   229%     -   33s
     0     0   46.00000    0  747   14.00000   46.00000   229%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 24
  Cover: 19
  Clique: 12
  MIR: 107
  StrongCG: 1
  Zero half: 85
  RLT: 52

Explored 1 nodes (70933 simplex iterations) in 50.09 seconds (44.39 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 13 11 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.600000000000e+01, gap 228.5714%

Wrote result file './lp_solutions/grafo5504.40.sol'

