
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:23:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6191.41.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/grafo6191.41.lp
Reading time = 0.14 seconds
: 88732 rows, 2368 columns, 268247 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 88732 rows, 2368 columns and 268247 nonzeros
Model fingerprint: 0x2ac57d98
Variable types: 49 continuous, 2319 integer (2319 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 17833 rows and 29 columns
Presolve time: 0.60s
Presolved: 70899 rows, 2339 columns, 215293 nonzeros
Variable types: 0 continuous, 2339 integer (2290 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2339 rows, 73238 columns, 217632 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24392    4.8920045e+01   0.000000e+00   7.409922e+03      5s
   40777    4.9000000e+01   0.000000e+00   0.000000e+00      8s
   40777    4.9000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.900000e+01, 40777 iterations, 7.75 seconds (6.71 work units)
Total elapsed time = 15.47s (DegenMoves)

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

     0     0   49.00000    0  419    5.00000   49.00000   880%     -   17s
H    0     0                       8.0000000   49.00000   512%     -   17s
H    0     0                      10.0000000   49.00000   390%     -   33s
     0     0   49.00000    0  900   10.00000   49.00000   390%     -   34s
     0     0   49.00000    0  852   10.00000   49.00000   390%     -   37s
     0     0   49.00000    0  848   10.00000   49.00000   390%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 33
  Cover: 8
  Clique: 6
  MIR: 120
  StrongCG: 1
  Zero half: 12
  RLT: 49

Explored 1 nodes (68715 simplex iterations) in 50.11 seconds (43.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 10 8 5 2 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.900000000000e+01, gap 390.0000%

Wrote result file './lp_solutions/grafo6191.41.sol'

