
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:29:50 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3353.40.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/grafo3353.40.lp
Reading time = 0.21 seconds
: 102565 rows, 1779 columns, 308932 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 102565 rows, 1779 columns and 308932 nonzeros
Model fingerprint: 0xd5dc189d
Variable types: 38 continuous, 1741 integer (1741 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 -0.0000000
Presolve removed 35806 rows and 21 columns
Presolve time: 0.91s
Presolved: 66759 rows, 1758 columns, 201739 nonzeros
Variable types: 0 continuous, 1758 integer (1720 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 1758 rows, 68517 columns, 203497 nonzeros


Root relaxation: objective 3.300000e+01, 2130 iterations, 0.72 seconds (0.70 work units)
Total elapsed time = 6.53s (DegenMoves)

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

     0     0   33.00000    0  395    5.00000   33.00000   560%     -    8s
H    0     0                       7.0000000   33.00000   371%     -    8s
     0     0   33.00000    0  660    7.00000   33.00000   371%     -   20s
H    0     0                       8.0000000   33.00000   312%     -   20s
     0     0   33.00000    0  656    8.00000   33.00000   312%     -   22s
     0     0   33.00000    0  566    8.00000   33.00000   312%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 22
  Cover: 16
  Clique: 17
  MIR: 103
  StrongCG: 1
  GUB cover: 1
  Zero half: 51
  RLT: 48
  BQP: 2

Explored 1 nodes (30800 simplex iterations) in 50.13 seconds (39.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 5 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.300000000000e+01, gap 312.5000%

Wrote result file './lp_solutions/grafo3353.40.sol'

