
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:21:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6182.40.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/grafo6182.40.lp
Reading time = 0.12 seconds
: 78051 rows, 2240 columns, 236044 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 78051 rows, 2240 columns and 236044 nonzeros
Model fingerprint: 0x75c49293
Variable types: 48 continuous, 2192 integer (2192 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 -0.0000000
Presolve removed 14354 rows and 36 columns
Presolve time: 0.50s
Presolved: 63697 rows, 2204 columns, 193461 nonzeros
Variable types: 0 continuous, 2204 integer (2156 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2201 rows, 65898 columns, 195665 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24881    5.0932160e+01   0.000000e+00   7.258376e+03      5s
   46800    5.1000000e+01   0.000000e+00   0.000000e+00      9s
   46800    5.1000000e+01   0.000000e+00   0.000000e+00      9s
   46800    5.1000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.100000e+01, 46800 iterations, 8.93 seconds (7.93 work units)
Total elapsed time = 17.02s (DegenMoves)

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

     0     0   51.00000    0  562    7.00000   51.00000   629%     -   17s
H    0     0                       8.0000000   51.00000   538%     -   18s
H    0     0                      10.0000000   51.00000   410%     -   19s
     0     0   51.00000    0  810   10.00000   51.00000   410%     -   31s
     0     0   51.00000    0  771   10.00000   51.00000   410%     -   33s
     0     0   51.00000    0  852   10.00000   51.00000   410%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 27
  Cover: 5
  Clique: 5
  MIR: 137
  StrongCG: 1
  GUB cover: 2
  Zero half: 25
  RLT: 60
  BQP: 1

Explored 1 nodes (76446 simplex iterations) in 50.08 seconds (43.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 10 8 7 -0 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.100000000000e+01, gap 410.0000%

Wrote result file './lp_solutions/grafo6182.40.sol'

