
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:27:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6309.41.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/grafo6309.41.lp
Reading time = 0.19 seconds
: 117851 rows, 2346 columns, 355620 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 117851 rows, 2346 columns and 355620 nonzeros
Model fingerprint: 0x03b311ab
Variable types: 49 continuous, 2297 integer (2297 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 33350 rows and 32 columns
Presolve time: 0.88s
Presolved: 84501 rows, 2314 columns, 255889 nonzeros
Variable types: 0 continuous, 2314 integer (2265 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2314 rows, 86815 columns, 258203 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22532    4.8930226e+01   0.000000e+00   3.505038e+04      5s
   46688    4.8917015e+01   0.000000e+00   8.790988e+01     10s
   52278    4.9000000e+01   0.000000e+00   0.000000e+00     11s
   52278    4.9000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.900000e+01, 52278 iterations, 10.18 seconds (8.78 work units)
Total elapsed time = 25.94s (DegenMoves)

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

     0     0   49.00000    0  638    7.00000   49.00000   600%     -   28s
     0     0   49.00000    0  872    7.00000   49.00000   600%     -   42s
     0     0   49.00000    0  851    7.00000   49.00000   600%     -   44s
     0     0          -    0         7.00000   49.00000   600%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 37
  Cover: 9
  Clique: 15
  MIR: 103
  StrongCG: 1
  Zero half: 17
  RLT: 53
  BQP: 3

Explored 1 nodes (75571 simplex iterations) in 50.03 seconds (47.84 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.899999999999e+01, gap 600.0000%

Wrote result file './lp_solutions/grafo6309.41.sol'

