
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:53:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2249.40.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/grafo2249.40.lp
Reading time = 0.13 seconds
: 81530 rows, 2179 columns, 246447 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 81530 rows, 2179 columns and 246447 nonzeros
Model fingerprint: 0xa3b20159
Variable types: 47 continuous, 2132 integer (2132 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 16842 rows and 33 columns
Presolve time: 0.56s
Presolved: 64688 rows, 2146 columns, 196381 nonzeros
Variable types: 0 continuous, 2146 integer (2099 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2146 rows, 66834 columns, 198527 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26937    4.0801141e+01   0.000000e+00   5.232608e+02      5s
   29186    4.1000000e+01   0.000000e+00   0.000000e+00      5s
   29186    4.1000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.100000e+01, 29186 iterations, 4.85 seconds (4.00 work units)
Total elapsed time = 11.14s (DegenMoves)
Total elapsed time = 20.88s (DegenMoves)

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

     0     0   41.00000    0  306    3.00000   41.00000  1267%     -   23s
H    0     0                       9.0000000   41.00000   356%     -   23s
H    0     0                      10.0000000   41.00000   310%     -   24s
H    0     0                      12.0000000   41.00000   242%     -   24s
     0     0   41.00000    0  627   12.00000   41.00000   242%     -   29s
     0     0   41.00000    0  592   12.00000   41.00000   242%     -   30s
     0     0   41.00000    0  630   12.00000   41.00000   242%     -   50s

Cutting planes:
  Lift-and-project: 38
  Cover: 9
  Clique: 10
  MIR: 133
  Zero half: 39
  RLT: 51
  BQP: 1

Explored 1 nodes (72290 simplex iterations) in 50.09 seconds (51.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 12 10 9 ... -0

Time limit reached
Best objective 1.200000000000e+01, best bound 4.100000000000e+01, gap 241.6667%

Wrote result file './lp_solutions/grafo2249.40.sol'

