
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:42:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7422.40.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/grafo7422.40.lp
Reading time = 0.23 seconds
: 142335 rows, 2149 columns, 428789 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 142335 rows, 2149 columns and 428789 nonzeros
Model fingerprint: 0x6b94263d
Variable types: 45 continuous, 2104 integer (2104 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 51518 rows and 18 columns
Presolve time: 0.98s
Presolved: 90817 rows, 2131 columns, 274569 nonzeros
Variable types: 0 continuous, 2131 integer (2086 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2131 rows, 92948 columns, 276700 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23913    4.5818330e+01   0.000000e+00   2.459567e+04      5s
   52137    4.5797880e+01   0.000000e+00   6.117750e+02     10s
   56921    4.6000000e+01   0.000000e+00   0.000000e+00     11s
   56921    4.6000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.600000e+01, 56921 iterations, 9.73 seconds (7.73 work units)
Total elapsed time = 20.67s (DegenMoves)

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

     0     0   46.00000    0  416    7.00000   46.00000   557%     -   23s
H    0     0                       8.0000000   46.00000   475%     -   23s
     0     0   46.00000    0  742    8.00000   46.00000   475%     -   33s
H    0     0                       9.0000000   46.00000   411%     -   34s
H    0     0                      10.0000000   46.00000   360%     -   34s
     0     0   46.00000    0  699   10.00000   46.00000   360%     -   34s
     0     0   46.00000    0  724   10.00000   46.00000   360%     -   50s

Cutting planes:
  Lift-and-project: 45
  Cover: 15
  Clique: 16
  MIR: 157
  StrongCG: 2
  Zero half: 50
  RLT: 58
  BQP: 4

Explored 1 nodes (83136 simplex iterations) in 50.04 seconds (51.87 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 10 9 8 7 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.600000000000e+01, gap 360.0000%

Wrote result file './lp_solutions/grafo7422.40.sol'

