
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:59:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6240.43.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/grafo6240.43.lp
Reading time = 0.13 seconds
: 83322 rows, 2452 columns, 252066 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 83322 rows, 2452 columns and 252066 nonzeros
Model fingerprint: 0xb65c3466
Variable types: 50 continuous, 2402 integer (2402 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 11891 rows and 26 columns
Presolve time: 0.54s
Presolved: 71431 rows, 2426 columns, 216735 nonzeros
Variable types: 0 continuous, 2426 integer (2376 binary)
Root relaxation presolved: 2426 rows, 73857 columns, 219161 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24346    5.3930786e+01   0.000000e+00   1.459375e+04      5s
   47810    5.3923583e+01   0.000000e+00   9.697353e+01     10s
   54352    5.4000000e+01   0.000000e+00   0.000000e+00     11s
   54352    5.4000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 5.400000e+01, 54352 iterations, 10.83 seconds (9.07 work units)
Total elapsed time = 27.24s (DegenMoves)
Total elapsed time = 32.41s (DegenMoves)
Total elapsed time = 42.24s (DegenMoves)

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

     0     0   54.00000    0  685          -   54.00000      -     -   45s
H    0     0                       6.0000000   54.00000   800%     -   45s
H    0     0                       7.0000000   54.00000   671%     -   45s
H    0     0                      13.0000000   54.00000   315%     -   45s
     0     0          -    0        13.00000   54.00000   315%     -   50s

Cutting planes:
  Gomory: 26
  Cover: 25
  MIR: 124
  GUB cover: 8
  Zero half: 26
  RLT: 47

Explored 1 nodes (88876 simplex iterations) in 50.08 seconds (59.11 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 7 6 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.400000000000e+01, gap 315.3846%

Wrote result file './lp_solutions/grafo6240.43.sol'

