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

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1301.31.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/grafo1301.31.lp
Reading time = 0.08 seconds
: 45439 rows, 1397 columns, 137436 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 45439 rows, 1397 columns and 137436 nonzeros
Model fingerprint: 0xad0c04da
Variable types: 37 continuous, 1360 integer (1360 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 13268 rows and 28 columns
Presolve time: 0.32s
Presolved: 32171 rows, 1369 columns, 98029 nonzeros
Variable types: 0 continuous, 1369 integer (1332 binary)
Root relaxation presolved: 19906 rows, 13634 columns, 73499 nonzeros


Root relaxation: objective 3.300000e+01, 1098 iterations, 0.32 seconds (0.25 work units)

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

     0     0   33.00000    0  328          -   33.00000      -     -    1s
H    0     0                       6.0000000   33.00000   450%     -    1s
H    0     0                      10.0000000   33.00000   230%     -    2s
H    0     0                      11.0000000   33.00000   200%     -    2s
     0     0   33.00000    0  605   11.00000   33.00000   200%     -    5s
     0     0   33.00000    0  583   11.00000   33.00000   200%     -    5s
     0     0   33.00000    0  319   11.00000   33.00000   200%     -   10s
     0     0   33.00000    0  345   11.00000   33.00000   200%     -   11s
H    0     0                      12.0000000   33.00000   175%     -   22s
H    0     0                      13.0000000   33.00000   154%     -   22s
     0     0   33.00000    0  471   13.00000   33.00000   154%     -   22s
     0     0   33.00000    0  429   13.00000   33.00000   154%     -   23s
H    0     0                      14.0000000   33.00000   136%     -   41s
H    0     0                      15.0000000   33.00000   120%     -   41s
     0     0   33.00000    0  361   15.00000   33.00000   120%     -   41s
     0     0   33.00000    0  371   15.00000   33.00000   120%     -   41s
     0     0   33.00000    0  283   15.00000   33.00000   120%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 2
  Clique: 8
  MIR: 17
  Zero half: 3
  RLT: 21

Explored 1 nodes (68845 simplex iterations) in 50.04 seconds (42.23 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 15 14 13 ... 6

Time limit reached
Best objective 1.500000000000e+01, best bound 3.300000000000e+01, gap 120.0000%

Wrote result file './lp_solutions/grafo1301.31.sol'

