
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:02:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6921.43.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/grafo6921.43.lp
Reading time = 0.12 seconds
: 74584 rows, 2208 columns, 225447 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 74584 rows, 2208 columns and 225447 nonzeros
Model fingerprint: 0x9d0360fa
Variable types: 45 continuous, 2163 integer (2163 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]
Presolve removed 12758 rows and 26 columns
Presolve time: 0.50s
Presolved: 61826 rows, 2182 columns, 187593 nonzeros
Variable types: 0 continuous, 2182 integer (2137 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2179 rows, 64005 columns, 189775 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26348    4.4936896e+01   0.000000e+00   8.873411e+02      5s
   37053    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   37053    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   37053    4.5000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.500000e+01, 37053 iterations, 6.57 seconds (5.86 work units)
Total elapsed time = 13.36s (DegenMoves)

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

     0     0   45.00000    0  440    9.00000   45.00000   400%     -   15s
H    0     0                      10.0000000   45.00000   350%     -   15s
H    0     0                      11.0000000   45.00000   309%     -   16s
     0     0   45.00000    0  673   11.00000   45.00000   309%     -   21s
     0     0   45.00000    0  682   11.00000   45.00000   309%     -   22s
     0     0   45.00000    0  635   11.00000   45.00000   309%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 33
  Cover: 8
  Clique: 4
  MIR: 147
  Zero half: 35
  RLT: 59

Explored 1 nodes (74474 simplex iterations) in 50.06 seconds (46.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 10 9 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.500000000000e+01, gap 309.0909%

Wrote result file './lp_solutions/grafo6921.43.sol'

