
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:32:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6426.48.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/grafo6426.48.lp
Reading time = 0.15 seconds
: 92154 rows, 2653 columns, 278523 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 92154 rows, 2653 columns and 278523 nonzeros
Model fingerprint: 0x906af8d0
Variable types: 50 continuous, 2603 integer (2603 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 1.0000000
Presolve removed 11118 rows and 1 columns
Presolve time: 0.51s
Presolved: 81036 rows, 2652 columns, 245531 nonzeros
Variable types: 0 continuous, 2652 integer (2602 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2613 rows, 83649 columns, 248183 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24631    4.6765961e+01   0.000000e+00   9.208632e+03      5s
   39939    4.7000000e+01   0.000000e+00   0.000000e+00      8s
   39939    4.7000000e+01   0.000000e+00   0.000000e+00      8s
   39939    4.7000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.700000e+01, 39939 iterations, 7.88 seconds (6.56 work units)
Total elapsed time = 18.49s (DegenMoves)
Total elapsed time = 22.56s (DegenMoves)

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

     0     0   47.00000    0  529   11.00000   47.00000   327%     -   25s
H    0     0                      12.0000000   47.00000   292%     -   25s
     0     0   47.00000    0  919   12.00000   47.00000   292%     -   39s
     0     0   47.00000    0  935   12.00000   47.00000   292%     -   40s
     0     0   47.00000    0  906   12.00000   47.00000   292%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 3
  Cover: 8
  MIR: 160
  StrongCG: 1
  Zero half: 88
  RLT: 72

Explored 1 nodes (73967 simplex iterations) in 50.03 seconds (51.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 11 1 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.700000000000e+01, gap 291.6667%

Wrote result file './lp_solutions/grafo6426.48.sol'

