
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:04:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3719.40.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/grafo3719.40.lp
Reading time = 0.18 seconds
: 110899 rows, 2075 columns, 334362 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 110899 rows, 2075 columns and 334362 nonzeros
Model fingerprint: 0xb8c7b155
Variable types: 43 continuous, 2032 integer (2032 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 37252 rows and 9 columns
Presolve time: 0.73s
Presolved: 73647 rows, 2066 columns, 222952 nonzeros
Variable types: 0 continuous, 2066 integer (2023 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2063 rows, 75710 columns, 225018 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26592    4.9826439e+01   0.000000e+00   1.204431e+03      5s
   41928    5.0000000e+01   0.000000e+00   0.000000e+00      8s
   41928    5.0000000e+01   0.000000e+00   0.000000e+00      8s
   41928    5.0000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 5.000000e+01, 41928 iterations, 6.93 seconds (5.46 work units)
Total elapsed time = 16.23s (DegenMoves)
Total elapsed time = 30.00s (DegenMoves)

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

     0     0   50.00000    0  410    8.00000   50.00000   525%     -   34s
H    0     0                      10.0000000   50.00000   400%     -   34s
     0     0   50.00000    0  759   10.00000   50.00000   400%     -   45s
     0     0   50.00000    0  718   10.00000   50.00000   400%     -   46s

Cutting planes:
  Gomory: 8
  Lift-and-project: 37
  Cover: 25
  Clique: 29
  MIR: 126
  StrongCG: 1
  Zero half: 39
  RLT: 34
  BQP: 2

Explored 1 nodes (76503 simplex iterations) in 50.18 seconds (58.40 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.999999999999e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo3719.40.sol'

