
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:56:33 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3201.40.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/grafo3201.40.lp
Reading time = 0.18 seconds
: 111518 rows, 2316 columns, 336602 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 111518 rows, 2316 columns and 336602 nonzeros
Model fingerprint: 0xb9890ae5
Variable types: 49 continuous, 2267 integer (2267 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 1.0000000
Presolve removed 30828 rows and 36 columns
Presolve time: 0.81s
Presolved: 80690 rows, 2280 columns, 244570 nonzeros
Variable types: 0 continuous, 2280 integer (2231 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2280 rows, 82970 columns, 246850 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23935    4.5965507e+01   0.000000e+00   2.081459e+04      5s
   46507    4.5954471e+01   0.000000e+00   2.234541e+03     10s
   60423    4.6000000e+01   0.000000e+00   0.000000e+00     13s
   60423    4.6000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.600000e+01, 60423 iterations, 12.33 seconds (10.46 work units)
Total elapsed time = 29.08s (DegenMoves)
Total elapsed time = 33.19s (DegenMoves)

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

     0     0   46.00000    0  686    6.00000   46.00000   667%     -   35s
H    0     0                       7.0000000   46.00000   557%     -   35s
H    0     0                       8.0000000   46.00000   475%     -   35s
     0     0          -    0         8.00000   46.00000   475%     -   50s

Cutting planes:
  Gomory: 27
  Cover: 15
  Clique: 14
  MIR: 185
  StrongCG: 1
  GUB cover: 4
  Zero half: 41
  RLT: 71

Explored 1 nodes (84677 simplex iterations) in 50.02 seconds (49.39 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 6 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.600000000000e+01, gap 475.0000%

Wrote result file './lp_solutions/grafo3201.40.sol'

