
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:24:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7423.43.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/grafo7423.43.lp
Reading time = 0.11 seconds
: 68620 rows, 2175 columns, 207555 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 68620 rows, 2175 columns and 207555 nonzeros
Model fingerprint: 0xb58483fa
Variable types: 45 continuous, 2130 integer (2130 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 2.0000000
Presolve removed 9003 rows and 25 columns
Presolve time: 0.45s
Presolved: 59617 rows, 2150 columns, 180921 nonzeros
Variable types: 0 continuous, 2150 integer (2105 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2150 rows, 61767 columns, 183071 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   30063    3.7975570e+01   0.000000e+00   4.381313e+03      5s
   46781    3.8000000e+01   0.000000e+00   0.000000e+00      8s
   46781    3.8000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 3.800000e+01, 46781 iterations, 7.79 seconds (6.59 work units)
Total elapsed time = 15.15s (DegenMoves)

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

     0     0   38.00000    0  427    5.00000   38.00000   660%     -   15s
H    0     0                       6.0000000   38.00000   533%     -   15s
H    0     0                       7.0000000   38.00000   443%     -   15s
     0     0   38.00000    0  791    7.00000   38.00000   443%     -   23s
H    0     0                      10.0000000   38.00000   280%     -   23s
     0     0   38.00000    0  786   10.00000   38.00000   280%     -   24s
     0     0   38.00000    0  508   10.00000   38.00000   280%     -   48s
H    0     0                      12.0000000   38.00000   217%     -   48s
H    0     0                      13.0000000   38.00000   192%     -   49s
     0     0   38.00000    0  462   13.00000   38.00000   192%     -   49s

Cutting planes:
  Gomory: 1
  Cover: 25
  Clique: 8
  MIR: 117
  StrongCG: 3
  GUB cover: 2
  Zero half: 1
  RLT: 25
  BQP: 1

Explored 1 nodes (85237 simplex iterations) in 50.09 seconds (43.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 13 12 10 ... 2

Time limit reached
Best objective 1.300000000000e+01, best bound 3.800000000000e+01, gap 192.3077%

Wrote result file './lp_solutions/grafo7423.43.sol'

