
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:37:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4077.40.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/grafo4077.40.lp
Reading time = 0.29 seconds
: 138551 rows, 2228 columns, 417579 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 138551 rows, 2228 columns and 417579 nonzeros
Model fingerprint: 0x574c80c9
Variable types: 46 continuous, 2182 integer (2182 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 49258 rows and 23 columns
Presolve time: 1.33s
Presolved: 89293 rows, 2205 columns, 270292 nonzeros
Variable types: 0 continuous, 2205 integer (2159 binary)
Root relaxation presolved: 2202 rows, 91495 columns, 272497 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15201    4.1883759e+01   0.000000e+00   6.431155e+04      5s
   36002    4.1824153e+01   0.000000e+00   5.920045e+03     10s
   44730    4.2000000e+01   0.000000e+00   0.000000e+00     12s
   44730    4.2000000e+01   0.000000e+00   0.000000e+00     12s
   44730    4.2000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.200000e+01, 44730 iterations, 10.76 seconds (6.45 work units)
Total elapsed time = 22.62s (DegenMoves)
Total elapsed time = 25.35s (DegenMoves)

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

     0     0   42.00000    0  469          -   42.00000      -     -   25s
H    0     0                       5.0000000   42.00000   740%     -   28s
     0     0   42.00000    0  594    5.00000   42.00000   740%     -   36s
H    0     0                       7.0000000   42.00000   500%     -   37s
     0     0   42.00000    0  579    7.00000   42.00000   500%     -   38s
     0     0          -    0         7.00000   42.00000   500%     -   50s

Cutting planes:
  Gomory: 13
  Lift-and-project: 46
  Cover: 19
  Clique: 18
  MIR: 113
  StrongCG: 1
  GUB cover: 3
  Zero half: 41
  RLT: 38
  BQP: 3

Explored 1 nodes (65429 simplex iterations) in 50.03 seconds (40.14 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 5 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.200000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo4077.40.sol'

