
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:50:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7050.40.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/grafo7050.40.lp
Reading time = 0.30 seconds
: 153109 rows, 1926 columns, 460721 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 153109 rows, 1926 columns and 460721 nonzeros
Model fingerprint: 0x4582ee3c
Variable types: 40 continuous, 1886 integer (1886 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 61679 rows and 24 columns
Presolve time: 1.51s
Presolved: 91430 rows, 1902 columns, 276004 nonzeros
Variable types: 0 continuous, 1902 integer (1862 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1902 rows, 93332 columns, 277906 nonzeros


Root relaxation: objective 4.000000e+01, 2362 iterations, 1.00 seconds (1.12 work units)
Total elapsed time = 9.15s (DegenMoves)
Total elapsed time = 10.18s (DegenMoves)

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

     0     0   40.00000    0  453    7.00000   40.00000   471%     -   11s
H    0     0                       9.0000000   40.00000   344%     -   11s
     0     0   40.00000    0  661    9.00000   40.00000   344%     -   23s
     0     0   40.00000    0  630    9.00000   40.00000   344%     -   24s
     0     0   40.00000    0  724    9.00000   40.00000   344%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 37
  Cover: 11
  Clique: 27
  MIR: 90
  GUB cover: 3
  Zero half: 10
  RLT: 56
  BQP: 4

Explored 1 nodes (24551 simplex iterations) in 50.05 seconds (43.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.000000000000e+01, gap 344.4444%

Wrote result file './lp_solutions/grafo7050.40.sol'

