./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_valuebound20.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 f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:44:51,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:44:51,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:44:51,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:44:51,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:44:51,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:44:51,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:44:51,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:44:51,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:44:51,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:44:51,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:44:51,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:44:51,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:44:51,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:44:51,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:44:51,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:44:51,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:44:51,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:44:51,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:44:51,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:44:51,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:44:51,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:44:51,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:44:51,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:44:51,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:44:51,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:44:51,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:44:51,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:44:51,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:44:51,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:44:51,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:44:51,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:44:51,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:44:51,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:44:51,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:44:51,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:44:51,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:44:51,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:44:51,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:44:51,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:44:51,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:44:51,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:44:51,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:44:51,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:44:51,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:44:51,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:44:51,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:44:51,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:44:51,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:44:51,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:44:51,712 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:44:51,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:44:51,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:44:51,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:44:51,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:44:51,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:44:51,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:44:51,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:44:51,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:44:51,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:44:51,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:44:51,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:44:51,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:44:51,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:44:51,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:44:51,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:44:51,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:44:51,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:44:51,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:44:51,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:44:51,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:44:51,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:44:51,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:44:51,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:44:51,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:44:51,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:44:51,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b [2021-12-21 12:44:51,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:44:51,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:44:51,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:44:51,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:44:51,903 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:44:51,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2021-12-21 12:44:51,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/385771c9c/9f43ff1ff0df487581242a39128e9e6d/FLAG315dc87b1 [2021-12-21 12:44:52,317 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:44:52,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2021-12-21 12:44:52,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/385771c9c/9f43ff1ff0df487581242a39128e9e6d/FLAG315dc87b1 [2021-12-21 12:44:52,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/385771c9c/9f43ff1ff0df487581242a39128e9e6d [2021-12-21 12:44:52,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:44:52,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:44:52,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:44:52,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:44:52,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:44:52,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:44:52" (1/1) ... [2021-12-21 12:44:52,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119ae498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:52, skipping insertion in model container [2021-12-21 12:44:52,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:44:52" (1/1) ... [2021-12-21 12:44:52,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:44:52,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:44:52,497 WARN L230 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_valuebound20.i[948,961] [2021-12-21 12:44:52,506 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:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1792) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:235) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1434) 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:730) 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:1385) 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:1069) 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:1456) 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:3268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2342) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:595) 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) [2021-12-21 12:44:52,510 INFO L158 Benchmark]: Toolchain (without parser) took 165.88ms. Allocated memory is still 136.3MB. Free memory was 109.0MB in the beginning and 114.6MB in the end (delta: -5.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 12:44:52,510 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 40.3MB in the beginning and 40.2MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:44:52,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.84ms. Allocated memory is still 136.3MB. Free memory was 108.6MB in the beginning and 114.6MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:44:52,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 40.3MB in the beginning and 40.2MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.84ms. Allocated memory is still 136.3MB. Free memory was 108.6MB in the beginning and 114.6MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. 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:846) 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_valuebound20.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 f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:44:53,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:44:53,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:44:53,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:44:53,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:44:53,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:44:53,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:44:53,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:44:53,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:44:53,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:44:53,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:44:53,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:44:54,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:44:54,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:44:54,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:44:54,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:44:54,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:44:54,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:44:54,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:44:54,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:44:54,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:44:54,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:44:54,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:44:54,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:44:54,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:44:54,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:44:54,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:44:54,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:44:54,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:44:54,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:44:54,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:44:54,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:44:54,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:44:54,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:44:54,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:44:54,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:44:54,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:44:54,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:44:54,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:44:54,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:44:54,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:44:54,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 12:44:54,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:44:54,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:44:54,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:44:54,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:44:54,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:44:54,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:44:54,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:44:54,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:44:54,061 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:44:54,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:44:54,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:44:54,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:44:54,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:44:54,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:44:54,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:44:54,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:44:54,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 12:44:54,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 12:44:54,063 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 12:44:54,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:44:54,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:44:54,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:44:54,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:44:54,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:44:54,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:44:54,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:44:54,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:44:54,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:44:54,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:44:54,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:44:54,065 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 12:44:54,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 12:44:54,066 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:44:54,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:44:54,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:44:54,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:44:54,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 12:44:54,067 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:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7d8666e561276f52fdb57f95324433fec798c5d47b9bb4ca4cdc06eae6ff06b [2021-12-21 12:44:54,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:44:54,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:44:54,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:44:54,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:44:54,374 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:44:54,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2021-12-21 12:44:54,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe30eb325/7ff7b10e41b6400091feb2adb141c60b/FLAG94b5f917c [2021-12-21 12:44:54,784 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:44:54,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound20.i [2021-12-21 12:44:54,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe30eb325/7ff7b10e41b6400091feb2adb141c60b/FLAG94b5f917c [2021-12-21 12:44:55,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe30eb325/7ff7b10e41b6400091feb2adb141c60b [2021-12-21 12:44:55,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:44:55,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:44:55,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:44:55,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:44:55,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:44:55,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51901b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55, skipping insertion in model container [2021-12-21 12:44:55,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:44:55,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:44:55,357 WARN L230 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_valuebound20.i[948,961] [2021-12-21 12:44:55,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:44:55,419 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:44:55,467 WARN L230 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_valuebound20.i[948,961] [2021-12-21 12:44:55,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:44:55,504 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:44:55,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55 WrapperNode [2021-12-21 12:44:55,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:44:55,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:44:55,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:44:55,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:44:55,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,544 INFO L137 Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 66 [2021-12-21 12:44:55,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:44:55,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:44:55,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:44:55,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:44:55,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:44:55,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:44:55,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:44:55,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:44:55,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (1/1) ... [2021-12-21 12:44:55,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:44:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:44:55,610 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) [2021-12-21 12:44:55,617 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 [2021-12-21 12:44:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:44:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 12:44:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 12:44:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 12:44:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:44:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:44:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 12:44:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 12:44:55,683 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:44:55,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:44:58,547 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:44:58,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:44:58,552 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:44:58,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:44:58 BoogieIcfgContainer [2021-12-21 12:44:58,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:44:58,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:44:58,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:44:58,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:44:58,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:44:55" (1/3) ... [2021-12-21 12:44:58,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400d88dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:44:58, skipping insertion in model container [2021-12-21 12:44:58,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:44:55" (2/3) ... [2021-12-21 12:44:58,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400d88dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:44:58, skipping insertion in model container [2021-12-21 12:44:58,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:44:58" (3/3) ... [2021-12-21 12:44:58,558 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound20.i [2021-12-21 12:44:58,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:44:58,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:44:58,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:44:58,595 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:44:58,595 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:44:58,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-21 12:44:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-21 12:44:58,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:44:58,611 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:44:58,611 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:44:58,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:44:58,615 INFO L85 PathProgramCache]: Analyzing trace with hash 919095715, now seen corresponding path program 1 times [2021-12-21 12:44:58,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:44:58,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614348619] [2021-12-21 12:44:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:44:58,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:44:58,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:44:58,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 12:44:58,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 12:44:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:44:58,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 12:44:58,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:44:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 12:44:59,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:44:59,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:44:59,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614348619] [2021-12-21 12:44:59,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614348619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:44:59,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:44:59,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:44:59,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154095070] [2021-12-21 12:44:59,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:44:59,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:44:59,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:44:59,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:44:59,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:44:59,334 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 12:44:59,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:44:59,347 INFO L93 Difference]: Finished difference Result 59 states and 92 transitions. [2021-12-21 12:44:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:44:59,352 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-12-21 12:44:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:44:59,356 INFO L225 Difference]: With dead ends: 59 [2021-12-21 12:44:59,357 INFO L226 Difference]: Without dead ends: 27 [2021-12-21 12:44:59,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:44:59,361 INFO L933 BasicCegarLoop]: 40 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, 40 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 [2021-12-21 12:44:59,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:44:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-21 12:44:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-21 12:44:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-21 12:44:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-12-21 12:44:59,385 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 29 [2021-12-21 12:44:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:44:59,386 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-12-21 12:44:59,386 INFO L471 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 12:44:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-12-21 12:44:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-21 12:44:59,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:44:59,387 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:44:59,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 12:44:59,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 12:44:59,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:44:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:44:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash -960358297, now seen corresponding path program 1 times [2021-12-21 12:44:59,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:44:59,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576793937] [2021-12-21 12:44:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:44:59,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:44:59,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:44:59,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 12:44:59,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 12:45:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:45:01,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 12:45:01,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:45:20,517 WARN L227 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-21 12:45:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 12:45:41,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:45:51,262 WARN L860 $PredicateComparison]: unable to prove that (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2)) (.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (bvadd (bvmul (bvadd (bvmul (_ bv4 32) .cse0) (bvmul (_ bv4 32) .cse1)) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse3)))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) is different from true [2021-12-21 12:46:00,215 WARN L860 $PredicateComparison]: unable to prove that (or (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2)) (.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (bvadd (bvmul (bvadd (bvmul (_ bv4 32) .cse0) (bvmul (_ bv4 32) .cse1)) (bvmul |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvadd (bvmul (_ bv8 32) .cse0) (bvmul (_ bv8 32) .cse1)))) (bvmul (_ bv8 32) .cse3) (bvneg (bvmul |c_ULTIMATE.start_main_~a~0#1| (bvmul (_ bv4 32) .cse3)))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32)))) is different from true [2021-12-21 12:46:12,718 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ BitVec 32))) (or (= (bvmul (_ bv8 32) |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|) (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv4294967294 32)))) (let ((.cse1 (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)) (.cse3 (bvneg (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|))) (.cse2 (bvudiv |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse0))) (bvadd (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvmul (bvurem |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| .cse0) (_ bv4 32))) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvmul (_ bv4 32) .cse1))) (bvneg (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul (_ bv8 32) .cse3)))) (bvmul (_ bv8 32) .cse1) (bvmul (bvadd (bvmul (_ bv4 32) .cse3) (bvmul .cse2 (_ bv4 32))) (bvmul |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|)))))) (bvugt |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ bv2 32)))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true