
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:33:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1904.39.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/grafo1904.39.lp
Reading time = 0.26 seconds
: 164110 rows, 2069 columns, 494018 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 164110 rows, 2069 columns and 494018 nonzeros
Model fingerprint: 0x7b59eac1
Variable types: 44 continuous, 2025 integer (2025 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 64167 rows and 30 columns
Presolve time: 1.32s
Presolved: 99943 rows, 2039 columns, 301882 nonzeros
Variable types: 0 continuous, 2039 integer (1995 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2039 rows, 101982 columns, 303921 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21357    4.1888448e+01   0.000000e+00   1.388367e+05      5s
   49145    4.1820150e+01   0.000000e+00   2.043503e+03     10s
   62880    4.2000000e+01   0.000000e+00   0.000000e+00     12s
   62880    4.2000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.200000e+01, 62880 iterations, 10.97 seconds (7.87 work units)
Total elapsed time = 22.05s (DegenMoves)
Total elapsed time = 25.86s (DegenMoves)

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

     0     0   42.00000    0  473   12.00000   42.00000   250%     -   27s
H    0     0                      13.0000000   42.00000   223%     -   27s
     0     0   42.00000    0  709   13.00000   42.00000   223%     -   39s
     0     0   42.00000    0  675   13.00000   42.00000   223%     -   41s
     0     0          -    0        13.00000   42.00000   223%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 38
  Cover: 7
  Clique: 14
  MIR: 80
  GUB cover: 1
  Zero half: 33
  RLT: 54
  BQP: 1

Explored 1 nodes (84535 simplex iterations) in 50.02 seconds (50.37 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 12 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.200000000000e+01, gap 223.0769%

Wrote result file './lp_solutions/grafo1904.39.sol'

