
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:12:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7163.44.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/grafo7163.44.lp
Reading time = 0.15 seconds
: 97837 rows, 2434 columns, 295527 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 97837 rows, 2434 columns and 295527 nonzeros
Model fingerprint: 0xc2269d37
Variable types: 48 continuous, 2386 integer (2386 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 20703 rows and 27 columns
Presolve time: 0.64s
Presolved: 77134 rows, 2407 columns, 233844 nonzeros
Variable types: 0 continuous, 2407 integer (2359 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2407 rows, 79541 columns, 236251 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22889    4.3772309e+01   0.000000e+00   4.109105e+04      5s
   47947    4.3745915e+01   0.000000e+00   3.657869e+02     10s
   53766    4.4000000e+01   0.000000e+00   0.000000e+00     11s
   53766    4.4000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.400000e+01, 53766 iterations, 10.52 seconds (8.17 work units)
Total elapsed time = 21.13s (DegenMoves)

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

     0     0   44.00000    0  481    8.00000   44.00000   450%     -   22s
H    0     0                      11.0000000   44.00000   300%     -   22s
     0     0   44.00000    0  846   11.00000   44.00000   300%     -   34s
     0     0   44.00000    0  746   11.00000   44.00000   300%     -   36s
     0     0   44.00000    0  728   11.00000   44.00000   300%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 25
  Cover: 10
  Clique: 15
  MIR: 123
  Zero half: 69
  RLT: 46

Explored 1 nodes (84451 simplex iterations) in 50.03 seconds (47.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 8 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.400000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo7163.44.sol'

