
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:45:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6495.39.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/grafo6495.39.lp
Reading time = 0.19 seconds
: 122856 rows, 2411 columns, 370813 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 122856 rows, 2411 columns and 370813 nonzeros
Model fingerprint: 0xe178fbf3
Variable types: 51 continuous, 2360 integer (2360 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 35951 rows and 31 columns
Presolve time: 0.89s
Presolved: 86905 rows, 2380 columns, 263412 nonzeros
Variable types: 0 continuous, 2380 integer (2329 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2377 rows, 89282 columns, 265792 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23186    5.2878110e+01   0.000000e+00   9.859573e+03      5s
   43550    5.3000000e+01   0.000000e+00   0.000000e+00      9s
   43550    5.3000000e+01   0.000000e+00   0.000000e+00      9s
   43550    5.3000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 5.300000e+01, 43550 iterations, 8.36 seconds (6.95 work units)
Total elapsed time = 22.12s (DegenMoves)

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

     0     0   53.00000    0  554   11.00000   53.00000   382%     -   27s
H    0     0                      13.0000000   53.00000   308%     -   27s
     0     0   53.00000    0  897   13.00000   53.00000   308%     -   45s
     0     0   53.00000    0  804   13.00000   53.00000   308%     -   48s

Cutting planes:
  Gomory: 1
  Cover: 23
  Clique: 33
  MIR: 175
  GUB cover: 2
  Zero half: 1
  RLT: 28
  BQP: 5

Explored 1 nodes (70783 simplex iterations) in 50.03 seconds (53.45 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 11 2 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.300000000000e+01, gap 307.6923%

Wrote result file './lp_solutions/grafo6495.39.sol'

