
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:02:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6062.38.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/grafo6062.38.lp
Reading time = 0.22 seconds
: 141020 rows, 2116 columns, 424845 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 141020 rows, 2116 columns and 424845 nonzeros
Model fingerprint: 0x7b752a9d
Variable types: 45 continuous, 2071 integer (2071 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 -0.0000000
Presolve removed 53324 rows and 18 columns
Presolve time: 0.95s
Presolved: 87696 rows, 2098 columns, 265311 nonzeros
Variable types: 0 continuous, 2098 integer (2053 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2092 rows, 89788 columns, 267409 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24731    4.6861504e+01   0.000000e+00   4.690506e+05      5s
   53916    4.6785292e+01   0.000000e+00   1.141956e+04     10s
   66890    4.7000000e+01   0.000000e+00   0.000000e+00     12s
   66890    4.7000000e+01   0.000000e+00   0.000000e+00     12s
   66890    4.7000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.700000e+01, 66890 iterations, 11.25 seconds (8.33 work units)
Total elapsed time = 22.14s (DegenMoves)

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

     0     0   47.00000    0  434    7.00000   47.00000   571%     -   24s
     0     0   47.00000    0  732    7.00000   47.00000   571%     -   35s
     0     0   47.00000    0  704    7.00000   47.00000   571%     -   37s
     0     0   47.00000    0  736    7.00000   47.00000   571%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 36
  Cover: 14
  Clique: 24
  MIR: 130
  Zero half: 62
  RLT: 63

Explored 1 nodes (90621 simplex iterations) in 50.03 seconds (50.38 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.700000000000e+01, gap 571.4286%

Wrote result file './lp_solutions/grafo6062.38.sol'

