
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:42:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3849.39.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/grafo3849.39.lp
Reading time = 0.26 seconds
: 151215 rows, 2070 columns, 455345 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 151215 rows, 2070 columns and 455345 nonzeros
Model fingerprint: 0x755ab22a
Variable types: 43 continuous, 2027 integer (2027 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 3.0000000
Presolve removed 58827 rows and 23 columns
Presolve time: 1.12s
Presolved: 92388 rows, 2047 columns, 279256 nonzeros
Variable types: 0 continuous, 2047 integer (2004 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2044 rows, 94432 columns, 281303 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22735    4.1863995e+01   0.000000e+00   1.019903e+05      5s
   50646    4.1798219e+01   0.000000e+00   2.934466e+03     10s
   59928    4.2000000e+01   0.000000e+00   0.000000e+00     12s
   59928    4.2000000e+01   0.000000e+00   0.000000e+00     12s
   59928    4.2000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.200000e+01, 59928 iterations, 10.55 seconds (7.80 work units)
Total elapsed time = 20.33s (DegenMoves)

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

     0     0   42.00000    0  407    7.00000   42.00000   500%     -   23s
     0     0   42.00000    0  650    7.00000   42.00000   500%     -   32s
     0     0   42.00000    0  622    7.00000   42.00000   500%     -   34s
     0     0   42.00000    0  671    7.00000   42.00000   500%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 47
  Cover: 21
  Clique: 19
  MIR: 79
  StrongCG: 1
  Zero half: 31
  RLT: 59
  BQP: 2

Explored 1 nodes (85962 simplex iterations) in 50.03 seconds (50.17 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 3 

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

Wrote result file './lp_solutions/grafo3849.39.sol'

