
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 02:58:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo161.31.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/grafo161.31.lp
Reading time = 0.35 seconds
: 211751 rows, 1545 columns, 636583 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 211751 rows, 1545 columns and 636583 nonzeros
Model fingerprint: 0x22e16b35
Variable types: 38 continuous, 1507 integer (1507 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 99607 rows and 10 columns
Presolve time: 1.51s
Presolved: 112144 rows, 1535 columns, 337867 nonzeros
Variable types: 0 continuous, 1535 integer (1497 binary)
Root relaxation presolved: 1532 rows, 113676 columns, 339402 nonzeros


Root relaxation: objective 4.200000e+01, 2342 iterations, 1.30 seconds (1.62 work units)
Total elapsed time = 11.39s (DegenMoves)
Total elapsed time = 15.55s (DegenMoves)

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

     0     0   42.00000    0  480          -   42.00000      -     -   16s
H    0     0                       8.0000000   42.00000   425%     -   16s
     0     0   42.00000    0  679    8.00000   42.00000   425%     -   27s
H    0     0                      10.0000000   42.00000   320%     -   28s
     0     0   42.00000    0  652   10.00000   42.00000   320%     -   29s
     0     0   42.00000    0  615   10.00000   42.00000   320%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 25
  Cover: 5
  Clique: 26
  MIR: 128
  StrongCG: 2
  Zero half: 79
  RLT: 74
  BQP: 6
  PSD: 1

Explored 1 nodes (25975 simplex iterations) in 50.04 seconds (57.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.200000000000e+01, gap 320.0000%

Wrote result file './lp_solutions/grafo161.31.sol'

