./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 f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX --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 0.2.1-dev-f8e1c90 [2021-11-09 10:38:53,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:38:53,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:38:53,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:38:53,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:38:53,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:38:53,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:38:53,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:38:53,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:38:53,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:38:53,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:38:53,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:38:53,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:38:53,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:38:53,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:38:53,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:38:53,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:38:53,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:38:53,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:38:53,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:38:53,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:38:53,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:38:53,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:38:53,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:38:53,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:38:53,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:38:53,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:38:53,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:38:53,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:38:53,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:38:53,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:38:53,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:38:53,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:38:53,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:38:53,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:38:53,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:38:53,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:38:53,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:38:53,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:38:53,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:38:53,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:38:53,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:38:53,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:38:53,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:38:53,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:38:53,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:38:53,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:38:53,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:38:53,691 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:38:53,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:38:53,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:38:53,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:38:53,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:38:53,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:38:53,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:38:53,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:38:53,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:38:53,694 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:38:53,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:38:53,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:38:53,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:38:53,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:38:53,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:38:53,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:38:53,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:38:53,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:38:53,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:38:53,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:38:53,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:38:53,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:38:53,697 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:38:53,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:38:53,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:38:53,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:38:53,698 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e [2021-11-09 10:38:53,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:38:53,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:38:53,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:38:53,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:38:53,981 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:38:53,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2021-11-09 10:38:54,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data/6ed5b37b1/20fe2378f2e546838e2b35f5176ab245/FLAG6fac9c5dd [2021-11-09 10:38:54,564 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:38:54,572 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2021-11-09 10:38:54,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data/6ed5b37b1/20fe2378f2e546838e2b35f5176ab245/FLAG6fac9c5dd [2021-11-09 10:38:54,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data/6ed5b37b1/20fe2378f2e546838e2b35f5176ab245 [2021-11-09 10:38:54,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:38:54,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:38:54,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:38:54,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:38:54,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:38:54,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:38:54" (1/1) ... [2021-11-09 10:38:54,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c2e969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:54, skipping insertion in model container [2021-11-09 10:38:54,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:38:54" (1/1) ... [2021-11-09 10:38:54,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:38:54,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:38:55,136 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961] [2021-11-09 10:38:55,149 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:1732) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430) 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:729) 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:1381) 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:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) 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:3254) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2328) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) 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) [2021-11-09 10:38:55,155 INFO L168 Benchmark]: Toolchain (without parser) took 207.62 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.7 MB in the beginning and 95.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:55,156 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:38:55,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.40 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.5 MB in the beginning and 95.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:55,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 205.40 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.5 MB in the beginning and 95.1 MB in the end (delta: -29.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: 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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX --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 0.2.1-dev-f8e1c90 [2021-11-09 10:38:57,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:38:57,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:38:57,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:38:57,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:38:57,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:38:57,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:38:57,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:38:57,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:38:57,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:38:57,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:38:57,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:38:57,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:38:57,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:38:57,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:38:57,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:38:57,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:38:57,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:38:57,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:38:57,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:38:57,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:38:57,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:38:57,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:38:57,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:38:57,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:38:57,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:38:57,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:38:57,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:38:57,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:38:57,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:38:57,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:38:57,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:38:57,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:38:57,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:38:57,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:38:57,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:38:57,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:38:57,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:38:57,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:38:57,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:38:57,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:38:57,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 10:38:57,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:38:57,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:38:57,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:38:57,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:38:57,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:38:57,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:38:57,364 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:38:57,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:38:57,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:38:57,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:38:57,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:38:57,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:38:57,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:38:57,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:38:57,367 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:38:57,367 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:38:57,367 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:38:57,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:38:57,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:38:57,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:38:57,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:38:57,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:38:57,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:38:57,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:38:57,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:38:57,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:38:57,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:38:57,370 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:38:57,370 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:38:57,371 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:38:57,371 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:38:57,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:38:57,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:38:57,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:38:57,372 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e [2021-11-09 10:38:57,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:38:57,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:38:57,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:38:57,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:38:57,755 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:38:57,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2021-11-09 10:38:57,828 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data/c91ffb049/82ddf8fc54af45b7ae3f31878a5477fa/FLAG9ca0d6dcc [2021-11-09 10:38:58,371 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:38:58,372 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i [2021-11-09 10:38:58,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data/c91ffb049/82ddf8fc54af45b7ae3f31878a5477fa/FLAG9ca0d6dcc [2021-11-09 10:38:58,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/data/c91ffb049/82ddf8fc54af45b7ae3f31878a5477fa [2021-11-09 10:38:58,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:38:58,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:38:58,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:38:58,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:38:58,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:38:58,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:38:58" (1/1) ... [2021-11-09 10:38:58,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6c56c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:58, skipping insertion in model container [2021-11-09 10:38:58,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:38:58" (1/1) ... [2021-11-09 10:38:58,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:38:58,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:38:58,941 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961] [2021-11-09 10:38:58,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:38:59,024 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:38:59,045 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961] [2021-11-09 10:38:59,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:38:59,103 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:38:59,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59 WrapperNode [2021-11-09 10:38:59,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:38:59,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:38:59,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:38:59,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:38:59,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:38:59,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:38:59,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:38:59,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:38:59,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:38:59,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:38:59,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:38:59,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:38:59,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (1/1) ... [2021-11-09 10:38:59,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:38:59,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:38:59,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:38:59,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:38:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:38:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:38:59,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:38:59,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:39:02,486 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:39:02,487 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-09 10:39:02,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:02 BoogieIcfgContainer [2021-11-09 10:39:02,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:39:02,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:39:02,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:39:02,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:39:02,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:38:58" (1/3) ... [2021-11-09 10:39:02,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f34534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:02, skipping insertion in model container [2021-11-09 10:39:02,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:59" (2/3) ... [2021-11-09 10:39:02,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f34534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:02, skipping insertion in model container [2021-11-09 10:39:02,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:02" (3/3) ... [2021-11-09 10:39:02,497 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound10.i [2021-11-09 10:39:02,503 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:39:02,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-09 10:39:02,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:39:02,563 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 [2021-11-09 10:39:02,564 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-09 10:39:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:02,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:39:02,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:02,582 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:02,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 10:39:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-11-09 10:39:02,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:02,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812989899] [2021-11-09 10:39:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:02,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:02,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:02,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:02,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:39:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:03,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:39:03,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:03,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:39:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:03,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:39:03,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812989899] [2021-11-09 10:39:03,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812989899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:03,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:03,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:39:03,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177771822] [2021-11-09 10:39:03,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:39:03,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:39:03,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:39:03,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:39:03,339 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:03,381 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2021-11-09 10:39:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:39:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 10:39:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:03,391 INFO L225 Difference]: With dead ends: 59 [2021-11-09 10:39:03,397 INFO L226 Difference]: Without dead ends: 27 [2021-11-09 10:39:03,410 INFO L786 BasicCegarLoop]: 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 [2021-11-09 10:39:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-09 10:39:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-09 10:39:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-11-09 10:39:03,457 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2021-11-09 10:39:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:03,457 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-11-09 10:39:03,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-11-09 10:39:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:39:03,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:03,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:03,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 10:39:03,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:39:03,683 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 10:39:03,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-11-09 10:39:03,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:39:03,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390951842] [2021-11-09 10:39:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:03,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:39:03,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:39:03,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:39:03,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f108849b-41e7-465e-8265-8a97ffdc5bb0/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process