
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:45:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3404.43.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/grafo3404.43.lp
Reading time = 0.13 seconds
: 79191 rows, 2152 columns, 239179 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 79191 rows, 2152 columns and 239179 nonzeros
Model fingerprint: 0xd2a851e8
Variable types: 43 continuous, 2109 integer (2109 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 17089 rows and 33 columns
Presolve time: 0.55s
Presolved: 62102 rows, 2119 columns, 188346 nonzeros
Variable types: 0 continuous, 2119 integer (2076 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2119 rows, 64221 columns, 190465 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28115    4.1940178e+01   0.000000e+00   1.598634e+03      5s
   39670    4.2000000e+01   0.000000e+00   0.000000e+00      7s
   39670    4.2000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.200000e+01, 39670 iterations, 6.43 seconds (5.38 work units)
Total elapsed time = 15.16s (DegenMoves)

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

     0     0   42.00000    0  409    8.00000   42.00000   425%     -   17s
H    0     0                      11.0000000   42.00000   282%     -   17s
H    0     0                      13.0000000   42.00000   223%     -   17s
     0     0   42.00000    0  664   13.00000   42.00000   223%     -   24s
     0     0   42.00000    0  634   13.00000   42.00000   223%     -   25s
H    0     0                      14.0000000   42.00000   200%     -   37s
     0     0   42.00000    0  633   14.00000   42.00000   200%     -   37s
     0     0   42.00000    0  589   14.00000   42.00000   200%     -   38s
     0     0   42.00000    0  397   14.00000   42.00000   200%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 5
  Clique: 8
  MIR: 92
  StrongCG: 2
  Zero half: 102
  RLT: 55

Explored 1 nodes (83629 simplex iterations) in 50.06 seconds (48.37 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 14 13 11 8 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.200000000000e+01, gap 200.0000%

Wrote result file './lp_solutions/grafo3404.43.sol'

