./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43afe140f1d8923ae3cc82938867c285a58a3757 ...................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43afe140f1d8923ae3cc82938867c285a58a3757 ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:34:26,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:34:26,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:34:27,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:34:27,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:34:27,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:34:27,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:34:27,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:34:27,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:34:27,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:34:27,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:34:27,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:34:27,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:34:27,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:34:27,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:34:27,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:34:27,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:34:27,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:34:27,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:34:27,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:34:27,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:34:27,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:34:27,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:34:27,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:34:27,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:34:27,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:34:27,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:34:27,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:34:27,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:34:27,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:34:27,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:34:27,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:34:27,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:34:27,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:34:27,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:34:27,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:34:27,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:34:27,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:34:27,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:34:27,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:34:27,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:34:27,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:34:27,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:34:27,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:34:27,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:34:27,060 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:34:27,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:34:27,061 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:34:27,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:34:27,061 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:34:27,061 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:34:27,061 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:34:27,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:34:27,069 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:34:27,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:34:27,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:34:27,069 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:34:27,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:34:27,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:34:27,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:34:27,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:34:27,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:34:27,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:34:27,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:34:27,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:34:27,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:34:27,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:34:27,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:34:27,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:34:27,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:34:27,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:34:27,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:34:27,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:34:27,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:34:27,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:34:27,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:34:27,072 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:34:27,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:34:27,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:34:27,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:34:27,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:34:27,073 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43afe140f1d8923ae3cc82938867c285a58a3757 [2020-12-09 18:34:27,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:34:27,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:34:27,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:34:27,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:34:27,262 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:34:27,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2020-12-09 18:34:27,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data/c0c84573f/de495cc192584e2782c968f4ebee0170/FLAG701d33fd1 [2020-12-09 18:34:27,738 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:34:27,738 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2020-12-09 18:34:27,750 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data/c0c84573f/de495cc192584e2782c968f4ebee0170/FLAG701d33fd1 [2020-12-09 18:34:27,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data/c0c84573f/de495cc192584e2782c968f4ebee0170 [2020-12-09 18:34:27,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:34:27,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:34:27,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:34:27,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:34:27,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:34:27,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:34:27" (1/1) ... [2020-12-09 18:34:27,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5823fc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:27, skipping insertion in model container [2020-12-09 18:34:27,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:34:27" (1/1) ... [2020-12-09 18:34:27,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:34:27,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:34:28,286 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1710) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:234) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1402) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2343) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:706) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2343) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:707) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:706) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:174) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:676) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1409) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1353) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1046) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1424) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3213) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2293) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:580) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 18:34:28,291 INFO L168 Benchmark]: Toolchain (without parser) took 522.73 ms. Allocated memory is still 121.6 MB. Free memory was 99.4 MB in the beginning and 88.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:34:28,291 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 83.9 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:34:28,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.72 ms. Allocated memory is still 121.6 MB. Free memory was 99.4 MB in the beginning and 88.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:34:28,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 83.9 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 520.72 ms. Allocated memory is still 121.6 MB. Free memory was 99.4 MB in the beginning and 88.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: fpclassify: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:34:29,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:34:29,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:34:29,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:34:29,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:34:29,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:34:29,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:34:29,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:34:29,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:34:29,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:34:29,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:34:29,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:34:29,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:34:29,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:34:29,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:34:29,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:34:29,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:34:29,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:34:29,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:34:29,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:34:29,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:34:29,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:34:29,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:34:29,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:34:29,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:34:29,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:34:29,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:34:29,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:34:29,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:34:29,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:34:29,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:34:29,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:34:29,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:34:29,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:34:29,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:34:29,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:34:29,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:34:29,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:34:29,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:34:29,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:34:29,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:34:29,718 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 18:34:29,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:34:29,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:34:29,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:34:29,745 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:34:29,745 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:34:29,745 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:34:29,746 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:34:29,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:34:29,746 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:34:29,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:34:29,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:34:29,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:34:29,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:34:29,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:34:29,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:34:29,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:34:29,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:34:29,748 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:34:29,748 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:34:29,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:34:29,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:34:29,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:34:29,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:34:29,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:34:29,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:34:29,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:34:29,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:34:29,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:34:29,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:34:29,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:34:29,751 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:34:29,751 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:34:29,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:34:29,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:34:29,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:34:29,752 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43afe140f1d8923ae3cc82938867c285a58a3757 [2020-12-09 18:34:29,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:34:30,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:34:30,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:34:30,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:34:30,017 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:34:30,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2020-12-09 18:34:30,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data/569c2f055/f5affa3dbfb34e8294162cca2482446c/FLAGa30c00e11 [2020-12-09 18:34:30,494 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:34:30,494 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/sv-benchmarks/c/floats-cbmc-regression/float-div1.i [2020-12-09 18:34:30,507 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data/569c2f055/f5affa3dbfb34e8294162cca2482446c/FLAGa30c00e11 [2020-12-09 18:34:30,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/data/569c2f055/f5affa3dbfb34e8294162cca2482446c [2020-12-09 18:34:30,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:34:30,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:34:30,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:34:30,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:34:30,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:34:30,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:34:30" (1/1) ... [2020-12-09 18:34:30,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc33f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:30, skipping insertion in model container [2020-12-09 18:34:30,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:34:30" (1/1) ... [2020-12-09 18:34:30,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:34:30,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:34:30,890 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2020-12-09 18:34:30,904 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2020-12-09 18:34:30,905 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2020-12-09 18:34:30,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:34:30,917 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:34:30,951 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40610,40623] [2020-12-09 18:34:30,955 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40902,40915] [2020-12-09 18:34:30,956 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/sv-benchmarks/c/floats-cbmc-regression/float-div1.i[40949,40962] [2020-12-09 18:34:30,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:34:31,174 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:34:31,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31 WrapperNode [2020-12-09 18:34:31,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:34:31,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:34:31,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:34:31,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:34:31,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:34:31,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:34:31,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:34:31,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:34:31,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... [2020-12-09 18:34:31,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:34:31,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:34:31,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:34:31,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:34:31,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:34:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 18:34:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:34:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:34:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:34:35,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:34:35,303 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 18:34:35,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:34:35 BoogieIcfgContainer [2020-12-09 18:34:35,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:34:35,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:34:35,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:34:35,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:34:35,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:34:30" (1/3) ... [2020-12-09 18:34:35,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42543e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:34:35, skipping insertion in model container [2020-12-09 18:34:35,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:34:31" (2/3) ... [2020-12-09 18:34:35,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42543e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:34:35, skipping insertion in model container [2020-12-09 18:34:35,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:34:35" (3/3) ... [2020-12-09 18:34:35,309 INFO L111 eAbstractionObserver]: Analyzing ICFG float-div1.i [2020-12-09 18:34:35,317 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:34:35,320 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-09 18:34:35,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-09 18:34:35,341 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:34:35,341 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:34:35,341 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:34:35,341 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:34:35,342 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:34:35,342 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:34:35,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:34:35,342 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:34:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-09 18:34:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 18:34:35,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:34:35,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 18:34:35,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:34:35,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:34:35,357 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-12-09 18:34:35,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:34:35,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030618061] [2020-12-09 18:34:35,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 18:34:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:34:35,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 18:34:35,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:34:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:34:35,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:34:35,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030618061] [2020-12-09 18:34:35,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:34:35,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:34:35,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924812039] [2020-12-09 18:34:35,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:34:35,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:34:35,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:34:35,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:34:35,757 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-09 18:34:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:34:35,767 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-12-09 18:34:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:34:35,768 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 18:34:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:34:35,774 INFO L225 Difference]: With dead ends: 37 [2020-12-09 18:34:35,774 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 18:34:35,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:34:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 18:34:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 18:34:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 18:34:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-09 18:34:35,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 6 [2020-12-09 18:34:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:34:35,799 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-09 18:34:35,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:34:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-09 18:34:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 18:34:35,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:34:35,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 18:34:36,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:34:36,002 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:34:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:34:36,005 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-12-09 18:34:36,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:34:36,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488062450] [2020-12-09 18:34:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 18:34:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:34:36,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 18:34:36,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:34:37,091 WARN L197 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2020-12-09 18:34:39,223 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (and (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState) (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 67108864.0)))) (fp.div c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode (fp.add c_currentRoundingMode ULTIMATE.start_inductiveStepHunt_~startState (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32))))) c_ULTIMATE.start_inductiveStepHunt_~oneAfter~0) (fp.lt ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)) ULTIMATE.start_inductiveStepHunt_~startState))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2020-12-09 18:34:45,395 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven ULTIMATE.start_inductiveStepHunt_~startState (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) .cse1)) (fp.lt .cse1 ULTIMATE.start_inductiveStepHunt_~startState) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState)))) is different from false [2020-12-09 18:34:47,436 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_inductiveStepHunt_~startState (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (and (not (fp.gt (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 67108864.0)))) (fp.div roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven (fp.add roundNearestTiesToEven ULTIMATE.start_inductiveStepHunt_~startState (fp.div roundNearestTiesToEven .cse0 ULTIMATE.start_inductiveStepHunt_~startState)) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32))))) .cse1)) (fp.lt .cse1 ULTIMATE.start_inductiveStepHunt_~startState) (fp.isNormal ULTIMATE.start_inductiveStepHunt_~startState)))) is different from true [2020-12-09 18:34:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:34:47,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:34:47,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488062450] [2020-12-09 18:34:47,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:34:47,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:34:47,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971885254] [2020-12-09 18:34:47,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 18:34:47,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:34:47,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 18:34:47,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2020-12-09 18:34:47,439 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 7 states. [2020-12-09 18:34:47,591 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 16 [2020-12-09 18:34:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:34:50,293 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-12-09 18:34:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 18:34:50,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-12-09 18:34:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:34:50,294 INFO L225 Difference]: With dead ends: 16 [2020-12-09 18:34:50,294 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 18:34:50,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=18, Invalid=17, Unknown=3, NotChecked=18, Total=56 [2020-12-09 18:34:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 18:34:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 18:34:50,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 18:34:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-12-09 18:34:50,298 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 6 [2020-12-09 18:34:50,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:34:50,298 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-12-09 18:34:50,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 18:34:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-12-09 18:34:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:34:50,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:34:50,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:34:50,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:34:50,501 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:34:50,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:34:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1929124086, now seen corresponding path program 1 times [2020-12-09 18:34:50,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:34:50,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223767277] [2020-12-09 18:34:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 18:34:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:34:51,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:34:51,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:34:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:34:51,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:34:51,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223767277] [2020-12-09 18:34:51,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:34:51,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:34:51,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765643337] [2020-12-09 18:34:51,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:34:51,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:34:51,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:34:51,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:34:51,116 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 3 states. [2020-12-09 18:34:54,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:34:54,562 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-12-09 18:34:54,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:34:54,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 18:34:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:34:54,564 INFO L225 Difference]: With dead ends: 14 [2020-12-09 18:34:54,564 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 18:34:54,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:34:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 18:34:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 18:34:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 18:34:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-09 18:34:54,567 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2020-12-09 18:34:54,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:34:54,567 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-09 18:34:54,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:34:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-09 18:34:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 18:34:54,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:34:54,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:34:54,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 18:34:54,769 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:34:54,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:34:54,771 INFO L82 PathProgramCache]: Analyzing trace with hash 326699576, now seen corresponding path program 1 times [2020-12-09 18:34:54,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:34:54,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944267815] [2020-12-09 18:34:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 18:34:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:34:55,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 18:34:55,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:34:59,515 WARN L197 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 18:34:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:34:59,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:34:59,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944267815] [2020-12-09 18:34:59,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:34:59,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:34:59,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953955876] [2020-12-09 18:34:59,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 18:34:59,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:34:59,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 18:34:59,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:34:59,878 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 6 states. [2020-12-09 18:35:03,580 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2020-12-09 18:35:12,321 WARN L197 SmtUtils]: Spent 7.96 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2020-12-09 18:35:12,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:12,590 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-09 18:35:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:35:12,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 18:35:12,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:12,619 INFO L225 Difference]: With dead ends: 12 [2020-12-09 18:35:12,619 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:35:12,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-09 18:35:12,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:35:12,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:35:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:35:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:35:12,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 18:35:12,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:12,620 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:35:12,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 18:35:12,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:35:12,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:35:12,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 18:35:12,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:35:12,886 INFO L262 CegarLoopResult]: For program point L2-1(lines 2 4) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point L384(line 384) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point L384-1(line 384) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L265 CegarLoopResult]: At program point L399(lines 394 400) the Hoare annotation is: true [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point L391(line 391) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point L391-1(line 391) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point L391-3(lines 387 393) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-09 18:35:12,887 INFO L262 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point L377(lines 377 385) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 392) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point L2(lines 2 4) no Hoare annotation was computed. [2020-12-09 18:35:12,888 INFO L262 CegarLoopResult]: For program point L386(lines 386 393) no Hoare annotation was computed. [2020-12-09 18:35:12,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:35:12 BoogieIcfgContainer [2020-12-09 18:35:12,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:35:12,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:35:12,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:35:12,894 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:35:12,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:34:35" (3/4) ... [2020-12-09 18:35:12,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:35:12,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 18:35:12,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 18:35:12,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:35:12,903 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:35:12,928 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_382efb3c-6ffb-48cb-98d1-286b07cf3862/bin/utaipan/witness.graphml [2020-12-09 18:35:12,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:35:12,929 INFO L168 Benchmark]: Toolchain (without parser) took 42407.06 ms. Allocated memory was 52.4 MB in the beginning and 88.1 MB in the end (delta: 35.7 MB). Free memory was 29.0 MB in the beginning and 40.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:12,930 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 34.9 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:35:12,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.82 ms. Allocated memory was 52.4 MB in the beginning and 88.1 MB in the end (delta: 35.7 MB). Free memory was 28.8 MB in the beginning and 50.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:12,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.90 ms. Allocated memory is still 88.1 MB. Free memory was 50.3 MB in the beginning and 47.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:12,931 INFO L168 Benchmark]: Boogie Preprocessor took 18.00 ms. Allocated memory is still 88.1 MB. Free memory was 47.7 MB in the beginning and 46.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:12,931 INFO L168 Benchmark]: RCFGBuilder took 4064.18 ms. Allocated memory is still 88.1 MB. Free memory was 46.6 MB in the beginning and 59.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:12,932 INFO L168 Benchmark]: TraceAbstraction took 37588.34 ms. Allocated memory is still 88.1 MB. Free memory was 59.1 MB in the beginning and 43.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:12,932 INFO L168 Benchmark]: Witness Printer took 35.27 ms. Allocated memory is still 88.1 MB. Free memory was 43.7 MB in the beginning and 40.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:35:12,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 34.9 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 651.82 ms. Allocated memory was 52.4 MB in the beginning and 88.1 MB in the end (delta: 35.7 MB). Free memory was 28.8 MB in the beginning and 50.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.90 ms. Allocated memory is still 88.1 MB. Free memory was 50.3 MB in the beginning and 47.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.00 ms. Allocated memory is still 88.1 MB. Free memory was 47.7 MB in the beginning and 46.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4064.18 ms. Allocated memory is still 88.1 MB. Free memory was 46.6 MB in the beginning and 59.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37588.34 ms. Allocated memory is still 88.1 MB. Free memory was 59.1 MB in the beginning and 43.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Witness Printer took 35.27 ms. Allocated memory is still 88.1 MB. Free memory was 43.7 MB in the beginning and 40.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 384]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 392]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 394]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 37.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 19.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 15 SDslu, 8 SDs, 0 SdLazy, 35 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 4 QuantifiedInterpolants, 2120 SizeOfPredicates, 15 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...