
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:41:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7150.41.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/grafo7150.41.lp
Reading time = 0.19 seconds
: 118559 rows, 2226 columns, 357525 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 118559 rows, 2226 columns and 357525 nonzeros
Model fingerprint: 0x7e6cfd29
Variable types: 46 continuous, 2180 integer (2180 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 37239 rows and 24 columns
Presolve time: 0.88s
Presolved: 81320 rows, 2202 columns, 246178 nonzeros
Variable types: 0 continuous, 2202 integer (2156 binary)
Root relaxation presolved: 2199 rows, 83519 columns, 248380 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23426    4.1760728e+01   0.000000e+00   2.844161e+03      5s
   38219    4.2000000e+01   0.000000e+00   0.000000e+00      8s
   38219    4.2000000e+01   0.000000e+00   0.000000e+00      8s
   38219    4.2000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.200000e+01, 38219 iterations, 6.90 seconds (5.53 work units)
Total elapsed time = 15.78s (DegenMoves)

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

     0     0   42.00000    0  565          -   42.00000      -     -   17s
H    0     0                       6.0000000   42.00000   600%     -   17s
     0     0   42.00000    0  837    6.00000   42.00000   600%     -   29s
H    0     0                       9.0000000   42.00000   367%     -   30s
     0     0   42.00000    0  743    9.00000   42.00000   367%     -   31s
     0     0   42.00000    0  875    9.00000   42.00000   367%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 34
  Cover: 15
  Clique: 31
  MIR: 87
  StrongCG: 1
  Zero half: 35
  RLT: 66
  BQP: 3

Explored 1 nodes (67229 simplex iterations) in 50.04 seconds (50.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.200000000000e+01, gap 366.6667%

Wrote result file './lp_solutions/grafo7150.41.sol'

