
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:28:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7343.44.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/grafo7343.44.lp
Reading time = 0.12 seconds
: 73254 rows, 2275 columns, 221528 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 73254 rows, 2275 columns and 221528 nonzeros
Model fingerprint: 0x01e03ecd
Variable types: 46 continuous, 2229 integer (2229 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 4.0000000
Presolve removed 10330 rows and 32 columns
Presolve time: 0.51s
Presolved: 62924 rows, 2243 columns, 190918 nonzeros
Variable types: 0 continuous, 2243 integer (2197 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2243 rows, 65167 columns, 193161 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28044    4.3964565e+01   0.000000e+00   1.152218e+04      5s
   53883    4.3957479e+01   0.000000e+00   8.990242e+01     10s
   56829    4.4000000e+01   0.000000e+00   0.000000e+00     11s
   56829    4.4000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.400000e+01, 56829 iterations, 10.03 seconds (7.98 work units)
Total elapsed time = 19.06s (DegenMoves)

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

     0     0   44.00000    0  484    7.00000   44.00000   529%     -   19s
H    0     0                       8.0000000   44.00000   450%     -   19s
H    0     0                       9.0000000   44.00000   389%     -   21s
     0     0   44.00000    0  806    9.00000   44.00000   389%     -   28s
     0     0   44.00000    0  780    9.00000   44.00000   389%     -   29s
     0     0   44.00000    0  782    9.00000   44.00000   389%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 32
  Cover: 13
  MIR: 113
  StrongCG: 1
  Zero half: 33
  RLT: 56

Explored 1 nodes (88748 simplex iterations) in 50.07 seconds (41.71 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 7 4 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.400000000000e+01, gap 388.8889%

Wrote result file './lp_solutions/grafo7343.44.sol'

