
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:59:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3048.41.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/grafo3048.41.lp
Reading time = 0.18 seconds
: 113055 rows, 2205 columns, 341014 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 113055 rows, 2205 columns and 341014 nonzeros
Model fingerprint: 0x9bb8dd80
Variable types: 45 continuous, 2160 integer (2160 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 36542 rows and 19 columns
Presolve time: 0.76s
Presolved: 76513 rows, 2186 columns, 231822 nonzeros
Variable types: 0 continuous, 2186 integer (2141 binary)
Root relaxation presolved: 2180 rows, 78693 columns, 234008 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25446    4.5893235e+01   0.000000e+00   2.391581e+04      5s
   33149    4.6000000e+01   0.000000e+00   0.000000e+00      7s
   33149    4.6000000e+01   0.000000e+00   0.000000e+00      7s
   33149    4.6000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.600000e+01, 33149 iterations, 5.60 seconds (4.69 work units)
Total elapsed time = 13.42s (DegenMoves)
Total elapsed time = 25.73s (DegenMoves)

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

     0     0   46.00000    0  337          -   46.00000      -     -   29s
H    0     0                       7.0000000   46.00000   557%     -   29s
H    0     0                      13.0000000   46.00000   254%     -   29s
H    0     0                      15.0000000   46.00000   207%     -   37s
     0     0   46.00000    0  639   15.00000   46.00000   207%     -   37s
     0     0   46.00000    0  624   15.00000   46.00000   207%     -   38s
     0     0   46.00000    0  616   15.00000   46.00000   207%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 28
  Cover: 12
  Clique: 17
  MIR: 124
  StrongCG: 1
  Zero half: 43
  RLT: 87
  BQP: 8

Explored 1 nodes (68392 simplex iterations) in 50.11 seconds (55.27 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 15 13 7 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.600000000000e+01, gap 206.6667%

Wrote result file './lp_solutions/grafo3048.41.sol'

