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102 lines
3.0 KiB
102 lines
3.0 KiB
//==============================================================================
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//
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// Copyright (c) 2013-
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// Authors:
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// * Ernst Moritz Hahn <emhahn@cs.ox.ac.uk> (University of Oxford)
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//
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//------------------------------------------------------------------------------
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//
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// This file is part of PRISM.
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//
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// PRISM is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// PRISM is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with PRISM; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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//==============================================================================
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package param;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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/**
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* TODO complete
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* @author Ernst Moritz Hahn <emhahn@cs.ox.ac.uk> (University of Oxford)
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*/
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final class RahdConstraintChecker extends ConstraintChecker {
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// TODO read from PrismSettings
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final static String rahdBin = "/home/scratch/svn/pers-sb/rahd/rahd-bin";
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public RahdConstraintChecker(int numRandomPoints) {
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super(numRandomPoints);
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}
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private boolean runRahd(Region region, String formula)
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{
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boolean ok = false;
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StringBuilder varBuilder = new StringBuilder();
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for (int var = 0; var < region.getDimensions(); var++) {
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varBuilder.append("x");
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varBuilder.append(var);
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varBuilder.append(" ");
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}
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String[] command = {"timeout", "5m", rahdBin, "-v", varBuilder.toString(), "-f", formula};
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Process p = null;
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try {
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p = Runtime.getRuntime().exec(command);
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BufferedReader bri = new BufferedReader(new InputStreamReader(p.getInputStream()));
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String line;
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while ((line = bri.readLine()) != null) {
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if (line.equals(" unsat")) {
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ok = true;
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}
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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return ok;
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}
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private String buildRegionString(Region region)
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{
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BoxRegion boxRegion = (BoxRegion) region;
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StringBuilder result = new StringBuilder();
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for (int dim = 0; dim < region.getDimensions(); dim++) {
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result.append("x");
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result.append(dim);
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result.append(">=");
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result.append(boxRegion.getDimensionLower(dim));
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result.append(" /\\ ");
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result.append("x");
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result.append(dim);
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result.append("<=");
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result.append(boxRegion.getDimensionUpper(dim));
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if (dim < region.getDimensions() - 1) {
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result.append(" /\\ ");
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}
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}
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return result.toString();
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}
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@Override
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boolean mainCheck(Region region, Function poly, boolean strict) {
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String regionString = buildRegionString(region);
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return runRahd(region, regionString + " /\\ " + poly + (strict ? " <= 0" : " < 0"));
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}
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}
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