
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:37:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6234.39.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/grafo6234.39.lp
Reading time = 0.13 seconds
: 81978 rows, 2240 columns, 247905 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 81978 rows, 2240 columns and 247905 nonzeros
Model fingerprint: 0x86cfd1a4
Variable types: 49 continuous, 2191 integer (2191 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 -0.0000000
Presolve removed 16217 rows and 36 columns
Presolve time: 0.53s
Presolved: 65761 rows, 2204 columns, 199612 nonzeros
Variable types: 0 continuous, 2204 integer (2155 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2204 rows, 67965 columns, 201816 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25832    5.2779267e+01   0.000000e+00   1.001201e+04      5s
   37384    5.3000000e+01   0.000000e+00   0.000000e+00      7s
   37384    5.3000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 5.300000e+01, 37384 iterations, 6.65 seconds (5.31 work units)
Total elapsed time = 16.55s (DegenMoves)

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

     0     0   53.00000    0  621    5.00000   53.00000   960%     -   19s
H    0     0                       7.0000000   53.00000   657%     -   21s
     0     0   53.00000    0  869    7.00000   53.00000   657%     -   31s
     0     0   53.00000    0  795    7.00000   53.00000   657%     -   33s
     0     0   53.00000    0  931    7.00000   53.00000   657%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 32
  Cover: 11
  Clique: 9
  MIR: 131
  GUB cover: 3
  Zero half: 64
  RLT: 70
  BQP: 1

Explored 1 nodes (68462 simplex iterations) in 50.07 seconds (43.65 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 5 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.300000000000e+01, gap 657.1429%

Wrote result file './lp_solutions/grafo6234.39.sol'

