
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:35:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7001.40.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/grafo7001.40.lp
Reading time = 0.14 seconds
: 85303 rows, 2158 columns, 257705 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 85303 rows, 2158 columns and 257705 nonzeros
Model fingerprint: 0x86f97b9c
Variable types: 45 continuous, 2113 integer (2113 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 22364 rows and 32 columns
Presolve time: 0.51s
Presolved: 62939 rows, 2126 columns, 191019 nonzeros
Variable types: 0 continuous, 2126 integer (2081 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2110 rows, 65049 columns, 193145 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25736    4.6951017e+01   0.000000e+00   3.005524e+04      5s
   50508    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   50508    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   50508    4.7000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.700000e+01, 50508 iterations, 9.20 seconds (7.85 work units)
Total elapsed time = 18.47s (DegenMoves)
Total elapsed time = 20.38s (DegenMoves)

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

     0     0   47.00000    0  430    8.00000   47.00000   487%     -   21s
H    0     0                      12.0000000   47.00000   292%     -   21s
     0     0   47.00000    0  741   12.00000   47.00000   292%     -   30s
     0     0   47.00000    0  704   12.00000   47.00000   292%     -   31s
     0     0   47.00000    0  632   12.00000   47.00000   292%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 32
  Cover: 11
  Clique: 9
  MIR: 123
  Zero half: 29
  RLT: 59
  BQP: 1

Explored 1 nodes (85096 simplex iterations) in 50.07 seconds (46.53 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 8 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.700000000000e+01, gap 291.6667%

Wrote result file './lp_solutions/grafo7001.40.sol'

