
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:46:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3515.43.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/grafo3515.43.lp
Reading time = 0.19 seconds
: 119280 rows, 2669 columns, 360290 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 119280 rows, 2669 columns and 360290 nonzeros
Model fingerprint: 0x80f0a829
Variable types: 53 continuous, 2616 integer (2616 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 27233 rows and 27 columns
Presolve time: 0.84s
Presolved: 92047 rows, 2642 columns, 279043 nonzeros
Variable types: 0 continuous, 2642 integer (2589 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2636 rows, 94683 columns, 281685 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20257    5.1710935e+01   0.000000e+00   5.461684e+04      5s
   41677    5.1681024e+01   0.000000e+00   1.669917e+04     10s
   57173    5.2000000e+01   0.000000e+00   0.000000e+00     14s
   57173    5.2000000e+01   0.000000e+00   0.000000e+00     14s
   57173    5.2000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 5.200000e+01, 57173 iterations, 13.04 seconds (10.07 work units)
Total elapsed time = 28.54s (DegenMoves)
Total elapsed time = 30.01s (DegenMoves)

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

     0     0   52.00000    0  609    8.00000   52.00000   550%     -   30s
H    0     0                      12.0000000   52.00000   333%     -   30s
     0     0          -    0        12.00000   52.00000   333%     -   50s

Cutting planes:
  Gomory: 43
  Cover: 38
  Clique: 5
  MIR: 130
  StrongCG: 1
  GUB cover: 7
  Zero half: 60
  RLT: 36

Explored 1 nodes (81335 simplex iterations) in 50.02 seconds (46.56 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 8 1 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.200000000000e+01, gap 333.3333%

Wrote result file './lp_solutions/grafo3515.43.sol'

