
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:22:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6686.42.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/grafo6686.42.lp
Reading time = 0.29 seconds
: 181431 rows, 2326 columns, 546190 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 181431 rows, 2326 columns and 546190 nonzeros
Model fingerprint: 0xc207f963
Variable types: 46 continuous, 2280 integer (2280 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 70618 rows and 24 columns
Presolve time: 1.35s
Presolved: 110813 rows, 2302 columns, 334663 nonzeros
Variable types: 0 continuous, 2302 integer (2256 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2296 rows, 113109 columns, 336965 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21021    4.8951882e+01   0.000000e+00   2.560798e+05      5s
   46436    4.8811854e+01   0.000000e+00   1.202903e+04     10s
   64653    4.9000000e+01   0.000000e+00   0.000000e+00     14s
   64653    4.9000000e+01   0.000000e+00   0.000000e+00     14s
   64653    4.9000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.900000e+01, 64653 iterations, 12.15 seconds (9.73 work units)
Total elapsed time = 22.78s (DegenMoves)
Total elapsed time = 32.08s (DegenMoves)

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

     0     0   49.00000    0  444    9.00000   49.00000   444%     -   33s
     0     0          -    0         9.00000   49.00000   444%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 37
  Clique: 36
  MIR: 128
  StrongCG: 2
  GUB cover: 3
  Zero half: 66
  RLT: 49
  BQP: 1

Explored 1 nodes (88183 simplex iterations) in 50.03 seconds (60.38 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.900000000000e+01, gap 444.4444%

Wrote result file './lp_solutions/grafo6686.42.sol'

