
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 20:43:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11243.37.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/grafo11243.37.lp
Reading time = 0.18 seconds
: 109381 rows, 2069 columns, 330030 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 109381 rows, 2069 columns and 330030 nonzeros
Model fingerprint: 0xa6e21d9a
Variable types: 46 continuous, 2023 integer (2023 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 35202 rows and 22 columns
Presolve time: 0.86s
Presolved: 74179 rows, 2047 columns, 224824 nonzeros
Variable types: 0 continuous, 2047 integer (2001 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2041 rows, 76220 columns, 226871 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21560    4.2946518e+01   0.000000e+00   2.887266e+04      5s
   45888    4.2934435e+01   0.000000e+00   3.204855e+03     10s
   50560    4.3000000e+01   0.000000e+00   0.000000e+00     11s
   50560    4.3000000e+01   0.000000e+00   0.000000e+00     11s
   50560    4.3000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.300000e+01, 50560 iterations, 10.00 seconds (8.23 work units)
Total elapsed time = 20.33s (DegenMoves)

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

     0     0   43.00000    0  540    5.00000   43.00000   760%     -   22s
H    0     0                       8.0000000   43.00000   437%     -   22s
     0     0   43.00000    0  760    8.00000   43.00000   437%     -   37s
     0     0   43.00000    0  738    8.00000   43.00000   437%     -   38s
     0     0   43.00000    0  761    8.00000   43.00000   437%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 1
  Cover: 17
  Clique: 29
  MIR: 162
  StrongCG: 1
  Zero half: 76
  RLT: 82
  BQP: 4

Explored 1 nodes (74939 simplex iterations) in 50.07 seconds (44.66 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 5 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo11243.37.sol'

