
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:59:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7452.45.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/grafo7452.45.lp
Reading time = 0.17 seconds
: 105415 rows, 2546 columns, 318396 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 105415 rows, 2546 columns and 318396 nonzeros
Model fingerprint: 0x02c158c9
Variable types: 49 continuous, 2497 integer (2497 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 23324 rows and 25 columns
Presolve time: 0.71s
Presolved: 82091 rows, 2521 columns, 248878 nonzeros
Variable types: 0 continuous, 2521 integer (2472 binary)
Root relaxation presolved: 2521 rows, 84612 columns, 251399 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21230    4.3954963e+01   0.000000e+00   4.662784e+04      5s
   42141    4.3936044e+01   0.000000e+00   2.061411e+04     10s
   63216    4.3931268e+01   0.000000e+00   7.761224e+02     15s
   67238    4.4000000e+01   0.000000e+00   0.000000e+00     16s
   67238    4.4000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.400000e+01, 67238 iterations, 15.10 seconds (13.84 work units)
Total elapsed time = 28.39s (DegenMoves)

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

     0     0   44.00000    0  323          -   44.00000      -     -   29s
H    0     0                       7.0000000   44.00000   529%     -   30s
     0     0   44.00000    0  624    7.00000   44.00000   529%     -   34s
H    0     0                       8.0000000   44.00000   450%     -   34s
     0     0   44.00000    0  618    8.00000   44.00000   450%     -   34s
     0     0   44.00000    0  672    8.00000   44.00000   450%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 3
  Cover: 16
  Clique: 21
  MIR: 92
  StrongCG: 3
  GUB cover: 1
  Zero half: 86
  RLT: 52
  BQP: 2

Explored 1 nodes (94752 simplex iterations) in 50.03 seconds (49.16 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.400000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo7452.45.sol'

