
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:31:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6955.40.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/grafo6955.40.lp
Reading time = 0.20 seconds
: 127125 rows, 2207 columns, 383234 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 127125 rows, 2207 columns and 383234 nonzeros
Model fingerprint: 0xe6a9a9e3
Variable types: 47 continuous, 2160 integer (2160 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 41469 rows and 37 columns
Presolve time: 1.00s
Presolved: 85656 rows, 2170 columns, 259234 nonzeros
Variable types: 0 continuous, 2170 integer (2123 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2161 rows, 87817 columns, 261404 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22130    4.2766380e+01   0.000000e+00   1.902674e+05      5s
   39975    4.3000000e+01   0.000000e+00   0.000000e+00      8s
   39975    4.3000000e+01   0.000000e+00   0.000000e+00      8s
   39975    4.3000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.300000e+01, 39975 iterations, 7.22 seconds (5.89 work units)
Total elapsed time = 20.43s (DegenMoves)

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

     0     0   43.00000    0  558    7.00000   43.00000   514%     -   22s
H    0     0                       8.0000000   43.00000   438%     -   22s
     0     0   43.00000    0  900    8.00000   43.00000   438%     -   39s
     0     0   43.00000    0  882    8.00000   43.00000   437%     -   41s
     0     0          -    0         8.00000   43.00000   437%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 16
  Cover: 9
  Clique: 19
  MIR: 141
  Zero half: 43
  RLT: 60
  BQP: 3

Explored 1 nodes (64587 simplex iterations) in 50.02 seconds (50.87 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 1 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo6955.40.sol'

