--- Job gr4x6 Start 08/21/08 07:33:35 GAMS Rev 227 Copyright (C) 1987-2008 GAMS Development. All rights reserved Licensee: Stefan Vigerske G071106/0001CB-LNX Humboldt University Berlin, Numerical Mathematics DC5918 --- Starting compilation --- gr4x6.gms(106) 2 Mb --- GDXin=/home/stefan/work/gams/models/LINlib/gr4x6.gdx --- gr4x6.gms(148) 3 Mb --- Starting execution: elapsed 0:00:00.018 --- gr4x6.gms(123) 4 Mb --- Generating MIP model m --- gr4x6.gms(124) 4 Mb --- 35 rows 49 columns 145 non-zeroes --- 24 discrete-columns --- Executing COINCBC: elapsed 0:00:00.021 GAMS/CoinCbc 2.0 LP/MIP Solver written by J. Forrest Problem statistics: 48 columns and 34 rows. 24 variables have integrality restrictions. Calling CBC main solution routine... Coin Cbc and Clp Solver version 2.00.00, build Mar 20 2008 command line - GAMS/CBC -solve -quit Continuous objective value is 185.55 - -0.00 seconds processed model has 34 rows, 48 columns (24 integer) and 96 elements Pass 1: obj. 1.50000 --> up = 1 , down = 0 Pass 2: obj. 0.83333 --> up = 0 , down = 0 -- rand = 3 ( 22) - solution found of 231.9 Before mini branch and bound, 18 integers at bound fixed and 18 continuous Full problem 34 rows 48 columns, reduced to 2 rows 3 columns Mini branch and bound did not improve solution (0.00 seconds) Round again with cutoff of 227.265 Pass 3: obj. 0.83333 --> up = 0 , down = 0 -- rand = 3 ( 17) - solution found of 226.35 Before mini branch and bound, 18 integers at bound fixed and 18 continuous Full problem 34 rows 48 columns, reduced to 2 rows 3 columns Mini branch and bound did not improve solution (0.01 seconds) After 0.01 seconds - Feasibility pump exiting - took 0.01 seconds Integer solution of 226.35 found by feasibility pump after 0 iterations and 0 nodes (0.01 seconds) Full problem 34 rows 48 columns, reduced to 0 rows 0 columns Integer solution of 202.35 found by rounding after 58 iterations and 0 nodes (0.02 seconds) 13 added rows had average density of 18.5385 At root node, 13 cuts changed objective from 185.55 to 202.35 in 7 passes Cut generator 0 (Probing) - 0 row cuts (0 active), 0 column cuts in 0.000 seconds - new frequency is 10 Cut generator 1 (Gomory) - 39 row cuts (2 active), 0 column cuts in 0.000 seconds - new frequency is 1 Cut generator 2 (Knapsack) - 26 row cuts (5 active), 0 column cuts in 0.004 seconds - new frequency is 1 Cut generator 3 (Clique) - 0 row cuts (0 active), 0 column cuts in 0.000 seconds - new frequency is -100 Cut generator 4 (MixedIntegerRounding2) - 15 row cuts (2 active), 0 column cuts in 0.000 seconds - new frequency is -100 Cut generator 5 (FlowCover) - 0 row cuts (0 active), 0 column cuts in 0.000 seconds - new frequency is -100 Cut generator 6 (TwoMirCuts) - 57 row cuts (4 active), 0 column cuts in 0.000 seconds - new frequency is -100 Search completed - best objective 202.35, took 58 iterations and 0 nodes (0.02 seconds) Maximum depth 0, 0 variables fixed on reduced cost Cuts at root node changed objective from 185.55 to 202.35 Probing was tried 7 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Gomory was tried 7 times and created 39 cuts of which 2 were active after adding rounds of cuts (0.000 seconds) Knapsack was tried 7 times and created 26 cuts of which 5 were active after adding rounds of cuts (0.004 seconds) Clique was tried 7 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) MixedIntegerRounding2 was tried 7 times and created 15 cuts of which 2 were active after adding rounds of cuts (0.000 seconds) FlowCover was tried 1 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) TwoMirCuts was tried 7 times and created 57 cuts of which 4 were active after adding rounds of cuts (0.000 seconds) Result - Finished objective 202.35 after 0 nodes and 58 iterations - took 0.02 seconds (total time 0.02) Total time 0.02 Solved to optimality. Writing solution. Objective: 202.35 Time: 0.03 s --- Restarting execution --- gr4x6.gms(124) 0 Mb --- Reading solution for model m *** Status: Normal completion --- Job gr4x6.gms Stop 08/21/08 07:33:35 elapsed 0:00:00.069