
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:19:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6029.39.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/grafo6029.39.lp
Reading time = 0.14 seconds
: 89047 rows, 2224 columns, 269098 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 89047 rows, 2224 columns and 269098 nonzeros
Model fingerprint: 0x9ae6f6a1
Variable types: 46 continuous, 2178 integer (2178 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 24946 rows and 47 columns
Presolve time: 0.63s
Presolved: 64101 rows, 2177 columns, 194841 nonzeros
Variable types: 0 continuous, 2177 integer (2131 binary)
Root relaxation presolved: 2168 rows, 66269 columns, 197018 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23540    4.2745690e+01   0.000000e+00   7.364047e+03      5s
   38777    4.3000000e+01   0.000000e+00   0.000000e+00      8s
   38777    4.3000000e+01   0.000000e+00   0.000000e+00      8s
   38777    4.3000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.300000e+01, 38777 iterations, 7.14 seconds (5.83 work units)
Total elapsed time = 15.74s (DegenMoves)
Total elapsed time = 20.79s (DegenMoves)

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

     0     0   43.00000    0  576          -   43.00000      -     -   23s
H    0     0                       8.0000000   43.00000   437%     -   26s
     0     0   43.00000    0  811    8.00000   43.00000   437%     -   35s
H    0     0                      16.0000000   43.00000   169%     -   36s
     0     0   43.00000    0  774   16.00000   43.00000   169%     -   39s
     0     0   43.00000    0  868   16.00000   43.00000   169%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 1
  Cover: 12
  Clique: 13
  MIR: 99
  Zero half: 114
  RLT: 75
  Relax-and-lift: 1
  BQP: 4

Explored 1 nodes (73482 simplex iterations) in 50.12 seconds (48.75 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 16 8 

Time limit reached
Best objective 1.600000000000e+01, best bound 4.300000000000e+01, gap 168.7500%

Wrote result file './lp_solutions/grafo6029.39.sol'

