hu.bme.mit.theta.xcfa2chc.Xcfa2Chc.kt Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of theta-xcfa2chc Show documentation
Show all versions of theta-xcfa2chc Show documentation
Xcfa2chc subproject in the Theta model checking framework
/*
* Copyright 2024 Budapest University of Technology and Economics
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package hu.bme.mit.theta.xcfa2chc
import hu.bme.mit.theta.core.Relation
import hu.bme.mit.theta.core.decl.Decls.Param
import hu.bme.mit.theta.core.plus
import hu.bme.mit.theta.core.type.arraytype.ArrayType
import hu.bme.mit.theta.core.type.booltype.BoolExprs.And
import hu.bme.mit.theta.core.type.booltype.BoolExprs.True
import hu.bme.mit.theta.core.type.inttype.IntExprs.Int
import hu.bme.mit.theta.core.utils.ExprUtils
import hu.bme.mit.theta.core.utils.PathUtils
import hu.bme.mit.theta.core.utils.StmtUtils
import hu.bme.mit.theta.core.utils.indexings.VarIndexingFactory
import hu.bme.mit.theta.solver.smtlib.impl.generic.GenericSmtLibSymbolTable
import hu.bme.mit.theta.solver.smtlib.impl.generic.GenericSmtLibTransformationManager
import hu.bme.mit.theta.xcfa.collectVars
import hu.bme.mit.theta.xcfa.model.XcfaProcedure
fun XcfaProcedure.toCHC(): List {
val i2i = ArrayType.of(Int(), Int())
val vars = edges.flatMap { it.label.collectVars() }.toSet().toList()
val types = vars.map { it.type }.toTypedArray()
val oldParams = vars.associateWith { Param("|" + it.name + "|", it.type) }
val oldParamList = vars.map { oldParams[it]!!.ref }.toTypedArray()
val newParams = vars.associateWith { Param("|" + it.name + "_new|", it.type) }
val ufs = locs.associateWith { Relation(it.name, *types) } // br, co, rf, com
edges.forEach {
val unfoldResult = StmtUtils.toExpr(it.label.toStmt(), VarIndexingFactory.basicVarIndexing(0))
val expr = PathUtils.unfold(And(unfoldResult.exprs), VarIndexingFactory.indexing(0))
// var[0] is oldParam, var[-1]is newParam, everything else is a fresh param
var cnt = 0
val consts = ExprUtils.getIndexedConstants(expr).associateWith {
if (it.index == 0) oldParams[it.varDecl]!!
else if (it.index == unfoldResult.indexing[it.varDecl]) newParams[it.varDecl]!!
else Param("__tmp_${cnt++}", it.type)
}
val newParamList = vars.map { if (unfoldResult.indexing[it] == 0) oldParams[it]!!.ref else newParams[it]!!.ref }
.toTypedArray()
val paramdExpr = ExprUtils.changeDecls(expr, consts)
(ufs[it.target]!!)(*newParamList) += (ufs[it.source]!!)(*oldParamList).expr + paramdExpr
}
if (errorLoc.isPresent) {
!(ufs[errorLoc.get()]!!(*oldParamList))
}
ufs[initLoc]!!(*oldParamList) += True()
return ufs.values.toList()
}
fun XcfaProcedure.toSMT2CHC(): String {
val chc = toCHC()
val smt2 = chc.toSMT2()
return smt2
}
fun List.toSMT2(): String {
val symbolTable = GenericSmtLibSymbolTable()
val transformationManager = GenericSmtLibTransformationManager(symbolTable)
val terms = flatMap { it.rules.map { "(assert " + transformationManager.toTerm(it.toExpr()) + ")" } }
val decls = filter { symbolTable.definesConst(it.constDecl) }.map { symbolTable.getDeclaration(it.constDecl) }
return """
; generated by Theta
; https://github.com/ftsrg/theta/
(set-logic HORN)
; declarations
${decls.joinToString("\n")}
; facts, rules, queries
${terms.joinToString("\n")}
(check-sat)
(exit)
""".trimIndent()
}
fun Relation.toSMT2() = listOf(this).toSMT2()
© 2015 - 2024 Weber Informatics LLC | Privacy Policy