./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 03:08:16,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 03:08:16,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 03:08:16,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 03:08:16,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 03:08:16,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 03:08:16,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 03:08:16,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 03:08:16,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 03:08:16,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 03:08:16,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 03:08:16,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 03:08:16,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 03:08:16,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 03:08:16,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 03:08:16,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 03:08:16,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 03:08:16,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 03:08:16,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 03:08:16,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 03:08:16,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 03:08:16,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 03:08:16,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 03:08:16,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 03:08:16,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 03:08:16,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 03:08:16,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 03:08:16,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 03:08:16,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 03:08:16,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 03:08:16,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 03:08:16,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 03:08:16,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 03:08:16,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 03:08:16,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 03:08:16,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 03:08:16,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 03:08:16,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 03:08:16,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 03:08:16,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 03:08:16,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 03:08:16,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 03:08:16,676 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 03:08:16,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 03:08:16,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 03:08:16,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 03:08:16,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 03:08:16,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 03:08:16,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 03:08:16,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 03:08:16,678 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 03:08:16,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 03:08:16,678 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 03:08:16,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 03:08:16,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 03:08:16,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 03:08:16,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 03:08:16,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 03:08:16,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 03:08:16,679 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 03:08:16,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 03:08:16,679 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 03:08:16,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 03:08:16,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 03:08:16,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 03:08:16,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 03:08:16,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 03:08:16,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 03:08:16,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 03:08:16,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 03:08:16,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 03:08:16,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 03:08:16,681 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 03:08:16,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 03:08:16,681 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 03:08:16,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 03:08:16,681 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 03:08:16,682 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e [2023-02-18 03:08:16,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 03:08:16,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 03:08:16,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 03:08:16,922 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 03:08:16,922 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 03:08:16,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2023-02-18 03:08:17,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 03:08:17,999 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 03:08:18,000 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2023-02-18 03:08:18,005 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7019bf712/e516fdb7415448f19dec17ad8ad88fd7/FLAGe7371f941 [2023-02-18 03:08:18,021 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7019bf712/e516fdb7415448f19dec17ad8ad88fd7 [2023-02-18 03:08:18,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 03:08:18,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 03:08:18,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 03:08:18,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 03:08:18,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 03:08:18,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:08:18" (1/1) ... [2023-02-18 03:08:18,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b1ea58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:18, skipping insertion in model container [2023-02-18 03:08:18,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:08:18" (1/1) ... [2023-02-18 03:08:18,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 03:08:18,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 03:08:18,229 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961] [2023-02-18 03:08:18,241 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: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:806) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2063) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:242) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) 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:728) 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:1420) 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:1094) 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:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1496) 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:3320) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2395) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) 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) [2023-02-18 03:08:18,246 INFO L158 Benchmark]: Toolchain (without parser) took 220.25ms. Allocated memory is still 192.9MB. Free memory was 154.7MB in the beginning and 158.4MB in the end (delta: -3.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-02-18 03:08:18,246 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 03:08:18,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.27ms. Allocated memory is still 192.9MB. Free memory was 154.0MB in the beginning and 158.4MB in the end (delta: -4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 03:08:18,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 130.0MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.27ms. Allocated memory is still 192.9MB. Free memory was 154.0MB in the beginning and 158.4MB in the end (delta: -4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:806) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 03:08:19,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 03:08:19,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 03:08:19,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 03:08:19,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 03:08:19,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 03:08:19,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 03:08:19,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 03:08:19,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 03:08:19,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 03:08:19,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 03:08:19,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 03:08:19,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 03:08:19,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 03:08:19,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 03:08:19,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 03:08:19,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 03:08:19,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 03:08:19,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 03:08:19,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 03:08:19,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 03:08:19,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 03:08:19,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 03:08:19,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 03:08:19,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 03:08:19,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 03:08:19,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 03:08:19,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 03:08:19,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 03:08:19,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 03:08:19,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 03:08:19,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 03:08:19,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 03:08:19,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 03:08:19,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 03:08:19,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 03:08:19,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 03:08:19,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 03:08:19,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 03:08:19,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 03:08:19,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 03:08:19,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-18 03:08:19,836 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 03:08:19,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 03:08:19,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 03:08:19,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 03:08:19,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 03:08:19,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 03:08:19,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 03:08:19,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 03:08:19,838 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 03:08:19,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 03:08:19,839 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 03:08:19,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 03:08:19,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 03:08:19,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 03:08:19,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 03:08:19,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 03:08:19,840 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 03:08:19,840 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 03:08:19,840 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 03:08:19,840 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 03:08:19,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 03:08:19,840 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 03:08:19,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 03:08:19,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 03:08:19,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 03:08:19,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 03:08:19,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 03:08:19,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 03:08:19,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 03:08:19,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 03:08:19,842 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 03:08:19,842 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 03:08:19,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 03:08:19,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 03:08:19,842 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 03:08:19,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 03:08:19,843 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 03:08:19,843 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 03:08:19,843 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e [2023-02-18 03:08:20,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 03:08:20,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 03:08:20,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 03:08:20,075 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 03:08:20,075 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 03:08:20,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2023-02-18 03:08:21,144 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 03:08:21,283 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 03:08:21,284 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2023-02-18 03:08:21,310 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca9a057b/c1620116f561494eb7bc42c317bb613f/FLAG97d27f96a [2023-02-18 03:08:21,321 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca9a057b/c1620116f561494eb7bc42c317bb613f [2023-02-18 03:08:21,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 03:08:21,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 03:08:21,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 03:08:21,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 03:08:21,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 03:08:21,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6efc26eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21, skipping insertion in model container [2023-02-18 03:08:21,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 03:08:21,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 03:08:21,490 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961] [2023-02-18 03:08:21,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 03:08:21,541 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 03:08:21,557 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961] [2023-02-18 03:08:21,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 03:08:21,586 INFO L208 MainTranslator]: Completed translation [2023-02-18 03:08:21,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21 WrapperNode [2023-02-18 03:08:21,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 03:08:21,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 03:08:21,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 03:08:21,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 03:08:21,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,630 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2023-02-18 03:08:21,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 03:08:21,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 03:08:21,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 03:08:21,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 03:08:21,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,673 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 03:08:21,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 03:08:21,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 03:08:21,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 03:08:21,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (1/1) ... [2023-02-18 03:08:21,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 03:08:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:08:21,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 03:08:21,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 03:08:21,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 03:08:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 03:08:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 03:08:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 03:08:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 03:08:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 03:08:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 03:08:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 03:08:21,834 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 03:08:21,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 03:08:24,713 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 03:08:24,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 03:08:24,718 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 03:08:24,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:08:24 BoogieIcfgContainer [2023-02-18 03:08:24,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 03:08:24,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 03:08:24,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 03:08:24,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 03:08:24,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 03:08:21" (1/3) ... [2023-02-18 03:08:24,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286615d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:08:24, skipping insertion in model container [2023-02-18 03:08:24,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:08:21" (2/3) ... [2023-02-18 03:08:24,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286615d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:08:24, skipping insertion in model container [2023-02-18 03:08:24,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:08:24" (3/3) ... [2023-02-18 03:08:24,726 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound10.i [2023-02-18 03:08:24,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 03:08:24,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 03:08:24,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 03:08:24,787 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b4e236e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 03:08:24,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 03:08:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 03:08:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 03:08:24,796 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:08:24,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:08:24,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:08:24,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:08:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1511169482, now seen corresponding path program 1 times [2023-02-18 03:08:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 03:08:24,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055793612] [2023-02-18 03:08:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:08:24,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 03:08:24,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 03:08:24,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 03:08:24,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-18 03:08:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:08:25,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 03:08:25,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:08:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 03:08:25,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 03:08:25,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 03:08:25,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055793612] [2023-02-18 03:08:25,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055793612] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 03:08:25,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 03:08:25,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 03:08:25,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755081134] [2023-02-18 03:08:25,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 03:08:25,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 03:08:25,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 03:08:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 03:08:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 03:08:25,145 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:08:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:08:25,159 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2023-02-18 03:08:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 03:08:25,160 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-18 03:08:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:08:25,165 INFO L225 Difference]: With dead ends: 55 [2023-02-18 03:08:25,165 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 03:08:25,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 03:08:25,170 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 03:08:25,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 03:08:25,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 03:08:25,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-18 03:08:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 03:08:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-02-18 03:08:25,193 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 19 [2023-02-18 03:08:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:08:25,193 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-02-18 03:08:25,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:08:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-02-18 03:08:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 03:08:25,194 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:08:25,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:08:25,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-18 03:08:25,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 03:08:25,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:08:25,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:08:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1110907126, now seen corresponding path program 1 times [2023-02-18 03:08:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 03:08:25,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449183357] [2023-02-18 03:08:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:08:25,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 03:08:25,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 03:08:25,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 03:08:25,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process