
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:32:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6844.41.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/grafo6844.41.lp
Reading time = 0.15 seconds
: 91309 rows, 2402 columns, 276009 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 91309 rows, 2402 columns and 276009 nonzeros
Model fingerprint: 0xb5faad55
Variable types: 50 continuous, 2352 integer (2352 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 1.0000000
Presolve removed 18044 rows and 45 columns
Presolve time: 0.62s
Presolved: 73265 rows, 2357 columns, 222421 nonzeros
Variable types: 0 continuous, 2357 integer (2307 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2357 rows, 75622 columns, 224778 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23132    4.7931610e+01   0.000000e+00   2.835518e+04      5s
   45572    4.7919794e+01   0.000000e+00   7.398850e+02     10s
   53293    4.8000000e+01   0.000000e+00   0.000000e+00     12s
   53293    4.8000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.800000e+01, 53293 iterations, 11.05 seconds (9.64 work units)
Total elapsed time = 24.95s (DegenMoves)
Total elapsed time = 25.62s (DegenMoves)

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

     0     0   48.00000    0  683    9.00000   48.00000   433%     -   26s
     0     0   48.00000    0  974    9.00000   48.00000   433%     -   49s

Cutting planes:
  Gomory: 2
  Cover: 1
  Clique: 8
  MIR: 50
  Zero half: 3
  RLT: 22

Explored 1 nodes (80081 simplex iterations) in 50.08 seconds (45.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.800000000000e+01, gap 433.3333%

Wrote result file './lp_solutions/grafo6844.41.sol'

