
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:00:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10755.41.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/grafo10755.41.lp
Reading time = 0.26 seconds
: 144768 rows, 2665 columns, 436819 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 144768 rows, 2665 columns and 436819 nonzeros
Model fingerprint: 0x324c89e1
Variable types: 53 continuous, 2612 integer (2612 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]
Found heuristic solution: objective 2.0000000
Presolve removed 42689 rows and 31 columns
Presolve time: 1.38s
Presolved: 102079 rows, 2634 columns, 309295 nonzeros
Variable types: 0 continuous, 2634 integer (2581 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2634 rows, 104713 columns, 311929 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15019    5.4880174e+01   0.000000e+00   6.818134e+05      5s
   31960    5.4757842e+01   0.000000e+00   1.193112e+05     10s
   47430    5.4734483e+01   0.000000e+00   1.454257e+04     15s
   62900    5.4727919e+01   0.000000e+00   2.090667e+03     20s
   68360    5.5000000e+01   0.000000e+00   0.000000e+00     22s
   68360    5.5000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.500000e+01, 68360 iterations, 20.39 seconds (11.86 work units)
Total elapsed time = 40.64s (DegenMoves)

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

     0     0   55.00000    0  629    6.00000   55.00000   817%     -   43s
H    0     0                       9.0000000   55.00000   511%     -   43s
     0     0          -    0         9.00000   55.00000   511%     -   50s

Cutting planes:
  Gomory: 37
  Cover: 40
  Clique: 26
  MIR: 166
  GUB cover: 8
  Zero half: 47
  RLT: 34
  BQP: 7

Explored 1 nodes (83406 simplex iterations) in 50.03 seconds (35.53 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 6 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.500000000000e+01, gap 511.1111%

Wrote result file './lp_solutions/grafo10755.41.sol'

