
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:09:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4043.37.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/grafo4043.37.lp
Reading time = 0.13 seconds
: 78486 rows, 1874 columns, 236971 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 78486 rows, 1874 columns and 236971 nonzeros
Model fingerprint: 0x27802084
Variable types: 42 continuous, 1832 integer (1832 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 22986 rows and 17 columns
Presolve time: 0.53s
Presolved: 55500 rows, 1857 columns, 168408 nonzeros
Variable types: 0 continuous, 1857 integer (1815 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 1857 rows, 57357 columns, 170265 nonzeros


Root relaxation: objective 4.700000e+01, 2159 iterations, 0.54 seconds (0.59 work units)
Total elapsed time = 6.39s (DegenMoves)

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

     0     0   47.00000    0  520    4.00000   47.00000  1075%     -    8s
H    0     0                       7.0000000   47.00000   571%     -    8s
     0     0   47.00000    0  917    7.00000   47.00000   571%     -   22s
     0     0   47.00000    0  877    7.00000   47.00000   571%     -   23s
     0     0   47.00000    0  758    7.00000   47.00000   571%     -   50s

Cutting planes:
  Gomory: 8
  Cover: 6
  Clique: 11
  MIR: 150
  Zero half: 93
  RLT: 80
  BQP: 1

Explored 1 nodes (40415 simplex iterations) in 50.06 seconds (45.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 4 

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

Wrote result file './lp_solutions/grafo4043.37.sol'

