
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:10:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4049.37.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/grafo4049.37.lp
Reading time = 0.38 seconds
: 230499 rows, 2174 columns, 693432 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 230499 rows, 2174 columns and 693432 nonzeros
Model fingerprint: 0x52780410
Variable types: 46 continuous, 2128 integer (2128 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 100572 rows and 10 columns
Presolve time: 1.55s
Presolved: 129927 rows, 2164 columns, 392009 nonzeros
Variable types: 0 continuous, 2164 integer (2118 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2154 rows, 132081 columns, 394173 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21520    7.6981621e+01   0.000000e+00   1.207663e+05      5s
   45909    5.6841422e+01   0.000000e+00   3.463678e+04     10s
   70869    5.6813724e+01   0.000000e+00   7.193770e+02     15s
   83379    5.7000000e+01   0.000000e+00   0.000000e+00     18s
   83379    5.7000000e+01   0.000000e+00   0.000000e+00     18s
   83379    5.7000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.700000e+01, 83379 iterations, 15.97 seconds (11.95 work units)
Total elapsed time = 37.59s (DegenMoves)
Total elapsed time = 41.08s (DegenMoves)
Total elapsed time = 46.08s (DegenMoves)

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

     0     0   57.00000    0  592    6.00000   57.00000   850%     -   46s
H    0     0                       8.0000000   57.00000   612%     -   47s
     0     0          -    0         8.00000   57.00000   612%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 51
  Clique: 51
  MIR: 175
  GUB cover: 4
  Zero half: 98
  RLT: 62
  BQP: 8

Explored 1 nodes (99495 simplex iterations) in 50.04 seconds (53.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 6 2 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.700000000000e+01, gap 612.5000%

Wrote result file './lp_solutions/grafo4049.37.sol'

