
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 17:21:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2040.27.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/grafo2040.27.lp
Reading time = 0.16 seconds
: 77519 rows, 1130 columns, 233435 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 77519 rows, 1130 columns and 233435 nonzeros
Model fingerprint: 0xe99ebd3d
Variable types: 32 continuous, 1098 integer (1098 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 34225 rows and 9 columns
Presolve time: 0.61s
Presolved: 43294 rows, 1121 columns, 130951 nonzeros
Variable types: 0 continuous, 1121 integer (1089 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1121 rows, 44415 columns, 132072 nonzeros


Root relaxation: objective 3.600000e+01, 1813 iterations, 0.83 seconds (0.78 work units)
Total elapsed time = 5.80s (DegenMoves)

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

     0     0   36.00000    0  331    7.00000   36.00000   414%     -    7s
H    0     0                       9.0000000   36.00000   300%     -    9s
     0     0   36.00000    0  487    9.00000   36.00000   300%     -   14s
     0     0   36.00000    0  485    9.00000   36.00000   300%     -   15s
     0     0   36.00000    0  454    9.00000   36.00000   300%     -   28s
     0     0   36.00000    0  441    9.00000   36.00000   300%     -   29s
     0     0   36.00000    0  245    9.00000   36.00000   300%     -   46s
     0     0   36.00000    0  284    9.00000   36.00000   300%     -   47s
     0     0   36.00000    0  343    9.00000   36.00000   300%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 32
  Clique: 25
  MIR: 86
  StrongCG: 1
  Zero half: 66
  RLT: 42
  BQP: 2

Explored 1 nodes (37211 simplex iterations) in 50.08 seconds (37.37 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 3 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.600000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo2040.27.sol'

