
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:59:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3287.40.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/grafo3287.40.lp
Reading time = 0.21 seconds
: 127358 rows, 2206 columns, 383899 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 127358 rows, 2206 columns and 383899 nonzeros
Model fingerprint: 0x48abb192
Variable types: 46 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 43539 rows and 18 columns
Presolve time: 0.81s
Presolved: 83819 rows, 2188 columns, 253702 nonzeros
Variable types: 0 continuous, 2188 integer (2142 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2185 rows, 86004 columns, 255890 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23154    5.0814853e+01   0.000000e+00   3.530004e+04      5s
   48550    5.1000000e+01   0.000000e+00   0.000000e+00     10s
   48550    5.1000000e+01   0.000000e+00   0.000000e+00     10s
   48550    5.1000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.100000e+01, 48550 iterations, 8.92 seconds (6.87 work units)
Total elapsed time = 10.13s (DegenMoves)
Total elapsed time = 22.22s (DegenMoves)

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

     0     0   51.00000    0  519    6.00000   51.00000   750%     -   24s
     0     0   51.00000    0  840    6.00000   51.00000   750%     -   37s
     0     0   51.00000    0  842    6.00000   51.00000   750%     -   39s
     0     0          -    0         6.00000   51.00000   750%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 49
  Cover: 19
  Clique: 20
  MIR: 131
  StrongCG: 1
  GUB cover: 3
  Zero half: 27
  RLT: 63

Explored 1 nodes (72065 simplex iterations) in 50.02 seconds (48.93 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.100000000000e+01, gap 750.0000%

Wrote result file './lp_solutions/grafo3287.40.sol'

