
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:33:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6544.48.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/grafo6544.48.lp
Reading time = 0.18 seconds
: 112411 rows, 2929 columns, 339782 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 112411 rows, 2929 columns and 339782 nonzeros
Model fingerprint: 0x6d5a521e
Variable types: 54 continuous, 2875 integer (2875 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 4.0000000
Presolve removed 17344 rows and 2 columns
Presolve time: 0.62s
Presolved: 95067 rows, 2927 columns, 288216 nonzeros
Variable types: 0 continuous, 2927 integer (2873 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2897 rows, 97964 columns, 291143 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19643    5.0687353e+01   0.000000e+00   1.657924e+05      5s
   39179    5.0665302e+01   0.000000e+00   2.981719e+03     10s
   55866    5.0661763e+01   0.000000e+00   1.848406e+02     15s
   58204    5.1000000e+01   0.000000e+00   0.000000e+00     16s
   58204    5.1000000e+01   0.000000e+00   0.000000e+00     16s
   58204    5.1000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.100000e+01, 58204 iterations, 14.97 seconds (11.62 work units)
Total elapsed time = 27.50s (DegenMoves)
Total elapsed time = 30.40s (DegenMoves)

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

     0     0   51.00000    0  548   11.00000   51.00000   364%     -   30s
H    0     0                      13.0000000   51.00000   292%     -   31s
     0     0   51.00000    0  941   13.00000   51.00000   292%     -   43s
     0     0   51.00000    0  856   13.00000   51.00000   292%     -   45s
     0     0          -    0        13.00000   51.00000   292%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 28
  Cover: 13
  Clique: 2
  MIR: 112
  StrongCG: 1
  Zero half: 39
  RLT: 32
  BQP: 1

Explored 1 nodes (82763 simplex iterations) in 50.02 seconds (47.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 11 4 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.100000000000e+01, gap 292.3077%

Wrote result file './lp_solutions/grafo6544.48.sol'

