
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 05:00:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3035.36.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/grafo3035.36.lp
Reading time = 0.25 seconds
: 152278 rows, 2023 columns, 458627 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 152278 rows, 2023 columns and 458627 nonzeros
Model fingerprint: 0x97df2b7b
Variable types: 45 continuous, 1978 integer (1978 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 3.0000000
Presolve removed 59891 rows and 15 columns
Presolve time: 1.10s
Presolved: 92387 rows, 2008 columns, 279237 nonzeros
Variable types: 0 continuous, 2008 integer (1963 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2008 rows, 94395 columns, 281245 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24363    5.1858911e+01   0.000000e+00   1.010022e+06      5s
   52835    5.1776536e+01   0.000000e+00   1.942088e+04     10s
   73325    5.2000000e+01   0.000000e+00   0.000000e+00     14s
   73325    5.2000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 5.200000e+01, 73325 iterations, 12.85 seconds (8.90 work units)
Total elapsed time = 26.59s (DegenMoves)
Total elapsed time = 33.91s (DegenMoves)

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

     0     0   52.00000    0  599    9.00000   52.00000   478%     -   34s
     0     0   52.00000    0  788    9.00000   52.00000   478%     -   44s
     0     0   52.00000    0  722    9.00000   52.00000   478%     -   47s

Cutting planes:
  Gomory: 1
  Lift-and-project: 22
  Cover: 16
  Clique: 25
  MIR: 132
  StrongCG: 1
  Zero half: 41
  RLT: 39
  BQP: 5

Explored 1 nodes (94339 simplex iterations) in 50.07 seconds (53.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 3 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.200000000000e+01, gap 477.7778%

Wrote result file './lp_solutions/grafo3035.36.sol'

