
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:52:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7578.49.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/grafo7578.49.lp
Reading time = 0.13 seconds
: 80087 rows, 2449 columns, 241925 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 80087 rows, 2449 columns and 241925 nonzeros
Model fingerprint: 0x28cd5bfd
Variable types: 45 continuous, 2404 integer (2404 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]
Presolve removed 9016 rows and 1 columns
Presolve time: 0.44s
Presolved: 71071 rows, 2448 columns, 215158 nonzeros
Variable types: 0 continuous, 2448 integer (2403 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2424 rows, 73495 columns, 217606 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26065    4.5753683e+01   0.000000e+00   3.912934e+02      5s
   28693    4.6000000e+01   0.000000e+00   0.000000e+00      6s
   28693    4.6000000e+01   0.000000e+00   0.000000e+00      6s
   28693    4.6000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.600000e+01, 28693 iterations, 5.00 seconds (4.49 work units)
Total elapsed time = 14.88s (DegenMoves)
Total elapsed time = 17.66s (DegenMoves)

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

     0     0   46.00000    0  535    9.00000   46.00000   411%     -   18s
H    0     0                      12.0000000   46.00000   283%     -   18s
     0     0   46.00000    0  747   12.00000   46.00000   283%     -   28s
     0     0   46.00000    0  719   12.00000   46.00000   283%     -   29s
     0     0   46.00000    0  697   12.00000   46.00000   283%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 52
  Cover: 15
  Clique: 3
  MIR: 146
  StrongCG: 1
  Zero half: 27
  RLT: 89
  BQP: 1

Explored 1 nodes (64672 simplex iterations) in 50.08 seconds (44.43 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 9 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.600000000000e+01, gap 283.3333%

Wrote result file './lp_solutions/grafo7578.49.sol'

