
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:24:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1560.49.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/grafo1560.49.lp
Reading time = 0.24 seconds
: 142058 rows, 2713 columns, 428258 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 142058 rows, 2713 columns and 428258 nonzeros
Model fingerprint: 0x1185c951
Variable types: 48 continuous, 2665 integer (2665 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 41701 rows and 24 columns
Presolve time: 1.11s
Presolved: 100357 rows, 2689 columns, 303714 nonzeros
Variable types: 0 continuous, 2689 integer (2641 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2677 rows, 103034 columns, 306403 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19148    3.9783795e+01   0.000000e+00   1.597522e+04      5s
   31007    4.0000000e+01   0.000000e+00   0.000000e+00      8s
   31007    4.0000000e+01   0.000000e+00   0.000000e+00      8s
   31007    4.0000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.000000e+01, 31007 iterations, 6.72 seconds (5.53 work units)
Total elapsed time = 19.17s (DegenMoves)
Total elapsed time = 24.51s (DegenMoves)
Total elapsed time = 37.38s (DegenMoves)

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

     0     0   40.00000    0  585    9.00000   40.00000   344%     -   41s
H    0     0                      12.0000000   40.00000   233%     -   41s
     0     0          -    0        12.00000   40.00000   233%     -   50s

Cutting planes:
  Gomory: 25
  Cover: 22
  Clique: 25
  MIR: 72
  GUB cover: 5
  Zero half: 11
  RLT: 25
  BQP: 4

Explored 1 nodes (59693 simplex iterations) in 50.02 seconds (57.15 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 4.000000000000e+01, gap 233.3333%

Wrote result file './lp_solutions/grafo1560.49.sol'

