
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:43:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7732.42.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/grafo7732.42.lp
Reading time = 0.10 seconds
: 65925 rows, 2126 columns, 199432 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 65925 rows, 2126 columns and 199432 nonzeros
Model fingerprint: 0x82c8db8a
Variable types: 45 continuous, 2081 integer (2081 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 9224 rows and 41 columns
Presolve time: 0.43s
Presolved: 56701 rows, 2085 columns, 172186 nonzeros
Variable types: 0 continuous, 2085 integer (2040 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2085 rows, 58786 columns, 174271 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29049    3.8952645e+01   0.000000e+00   2.504201e+03      5s
   36225    3.9000000e+01   0.000000e+00   0.000000e+00      6s
   36225    3.9000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 3.900000e+01, 36225 iterations, 5.81 seconds (5.05 work units)
Total elapsed time = 14.58s (DegenMoves)
Total elapsed time = 16.88s (DegenMoves)

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

     0     0   39.00000    0  580    6.00000   39.00000   550%     -   18s
H    0     0                       8.0000000   39.00000   388%     -   18s
     0     0   39.00000    0  767    8.00000   39.00000   387%     -   30s
     0     0   39.00000    0  786    8.00000   39.00000   387%     -   35s
     0     0   39.00000    0  808    8.00000   39.00000   387%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 23
  Cover: 9
  Clique: 4
  MIR: 100
  GUB cover: 1
  Zero half: 12
  RLT: 43

Explored 1 nodes (70721 simplex iterations) in 50.05 seconds (43.43 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 6 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.900000000000e+01, gap 387.5000%

Wrote result file './lp_solutions/grafo7732.42.sol'

