
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:31:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6431.41.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/grafo6431.41.lp
Reading time = 0.13 seconds
: 78390 rows, 2223 columns, 237042 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 78390 rows, 2223 columns and 237042 nonzeros
Model fingerprint: 0xa1c7b125
Variable types: 46 continuous, 2177 integer (2177 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 16422 rows and 25 columns
Presolve time: 0.52s
Presolved: 61968 rows, 2198 columns, 188290 nonzeros
Variable types: 0 continuous, 2198 integer (2152 binary)
Root relaxation presolved: 2195 rows, 64163 columns, 190488 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27225    4.2965738e+01   0.000000e+00   1.800283e+04      5s
   44566    4.3000000e+01   0.000000e+00   0.000000e+00      8s
   44566    4.3000000e+01   0.000000e+00   0.000000e+00      8s
   44566    4.3000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.300000e+01, 44566 iterations, 7.73 seconds (6.37 work units)
Total elapsed time = 18.53s (DegenMoves)
Total elapsed time = 27.00s (DegenMoves)
Total elapsed time = 38.75s (DegenMoves)
Total elapsed time = 41.03s (DegenMoves)

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

     0     0   43.00000    0  514          -   43.00000      -     -   41s
H    0     0                       7.0000000   43.00000   514%     -   44s
     0     0          -    0         7.00000   43.00000   514%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 32
  Clique: 14
  MIR: 135
  StrongCG: 1
  GUB cover: 7
  Zero half: 44
  RLT: 35
  BQP: 4

Explored 1 nodes (90802 simplex iterations) in 50.07 seconds (57.16 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.300000000000e+01, gap 514.2857%

Wrote result file './lp_solutions/grafo6431.41.sol'

