
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:01:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5921.38.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/grafo5921.38.lp
Reading time = 0.27 seconds
: 164914 rows, 2172 columns, 496628 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 164914 rows, 2172 columns and 496628 nonzeros
Model fingerprint: 0xc8746f0f
Variable types: 47 continuous, 2125 integer (2125 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 64305 rows and 30 columns
Presolve time: 1.22s
Presolved: 100609 rows, 2142 columns, 303985 nonzeros
Variable types: 0 continuous, 2142 integer (2095 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2142 rows, 102751 columns, 306127 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21452    5.5910869e+01   0.000000e+00   2.652035e+05      5s
   48138    5.3810486e+01   0.000000e+00   1.863359e+04     10s
   68666    5.4000000e+01   0.000000e+00   0.000000e+00     14s
   68666    5.4000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 5.400000e+01, 68666 iterations, 12.77 seconds (9.79 work units)
Total elapsed time = 32.52s (DegenMoves)
Total elapsed time = 35.90s (DegenMoves)

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

     0     0   54.00000    0  568   11.00000   54.00000   391%     -   36s
     0     0          -    0        11.00000   54.00000   391%     -   50s

Cutting planes:
  Gomory: 30
  Cover: 40
  Clique: 32
  MIR: 223
  StrongCG: 2
  GUB cover: 6
  Zero half: 53
  RLT: 79
  BQP: 1

Explored 1 nodes (89073 simplex iterations) in 50.02 seconds (51.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 1 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.400000000000e+01, gap 390.9091%

Wrote result file './lp_solutions/grafo5921.38.sol'

