
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:03:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3640.41.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/grafo3640.41.lp
Reading time = 0.17 seconds
: 107034 rows, 2265 columns, 323015 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 107034 rows, 2265 columns and 323015 nonzeros
Model fingerprint: 0x27e4c3df
Variable types: 47 continuous, 2218 integer (2218 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 30308 rows and 20 columns
Presolve time: 0.73s
Presolved: 76726 rows, 2245 columns, 232433 nonzeros
Variable types: 0 continuous, 2245 integer (2198 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2245 rows, 78971 columns, 234678 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25485    4.8769533e+01   0.000000e+00   2.074756e+04      5s
   39319    4.9000000e+01   0.000000e+00   0.000000e+00      8s
   39319    4.9000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.900000e+01, 39319 iterations, 6.94 seconds (5.54 work units)
Total elapsed time = 18.73s (DegenMoves)

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

     0     0   49.00000    0  826    8.00000   49.00000   512%     -   39s
     0     0          -    0         8.00000   49.00000   512%     -   50s

Cutting planes:
  Gomory: 26
  Cover: 24
  Clique: 45
  MIR: 117
  GUB cover: 4
  Zero half: 29
  RLT: 56
  BQP: 5

Explored 1 nodes (70856 simplex iterations) in 50.10 seconds (61.75 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.900000000000e+01, gap 512.5000%

Wrote result file './lp_solutions/grafo3640.41.sol'

