
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:36:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6973.41.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/grafo6973.41.lp
Reading time = 0.25 seconds
: 158299 rows, 2777 columns, 477556 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 158299 rows, 2777 columns and 477556 nonzeros
Model fingerprint: 0x4d99ec96
Variable types: 55 continuous, 2722 integer (2722 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, 6e+01]
Presolve removed 48229 rows and 21 columns
Presolve time: 1.07s
Presolved: 110070 rows, 2756 columns, 333307 nonzeros
Variable types: 0 continuous, 2756 integer (2701 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2750 rows, 112820 columns, 336063 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19053    6.7766131e+01   0.000000e+00   7.229243e+04      5s
   39177    6.6725556e+01   0.000000e+00   1.633368e+04     10s
   58833    6.6716139e+01   0.000000e+00   4.922893e+03     15s
   72560    6.7000000e+01   0.000000e+00   0.000000e+00     19s
   72560    6.7000000e+01   0.000000e+00   0.000000e+00     19s
   72560    6.7000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 6.700000e+01, 72560 iterations, 17.40 seconds (13.83 work units)
Total elapsed time = 38.32s (DegenMoves)
Total elapsed time = 41.31s (DegenMoves)

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

     0     0   67.00000    0  677    8.00000   67.00000   737%     -   44s
     0     0          -    0         8.00000   67.00000   737%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 50
  Clique: 42
  MIR: 212
  GUB cover: 7
  Zero half: 50
  RLT: 56
  BQP: 5

Explored 1 nodes (93327 simplex iterations) in 50.03 seconds (51.03 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 6.700000000000e+01, gap 737.5000%

Wrote result file './lp_solutions/grafo6973.41.sol'

