./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.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_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/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_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/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_9c8d75d4-eaf4-4781-98be-11718f852e85/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 f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:42:33,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:42:33,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:42:33,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:42:33,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:42:33,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:42:33,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:42:33,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:42:33,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:42:33,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:42:33,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:42:33,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:42:33,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:42:33,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:42:33,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:42:33,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:42:33,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:42:33,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:42:33,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:42:33,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:42:33,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:42:33,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:42:33,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:42:33,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:42:33,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:42:33,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:42:33,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:42:33,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:42:33,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:42:33,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:42:33,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:42:33,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:42:33,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:42:33,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:42:33,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:42:33,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:42:33,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:42:33,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:42:33,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:42:33,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:42:33,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:42:33,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:42:33,700 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:42:33,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:42:33,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:42:33,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:42:33,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:42:33,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:42:33,703 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:42:33,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:42:33,703 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:42:33,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:42:33,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:42:33,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:42:33,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:42:33,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:42:33,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:42:33,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:42:33,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:42:33,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:42:33,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:42:33,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:42:33,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:42:33,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:42:33,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:42:33,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:42:33,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:42:33,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:42:33,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:42:33,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:42:33,708 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:42:33,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:42:33,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:42:33,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:42:33,709 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_9c8d75d4-eaf4-4781-98be-11718f852e85/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 [2021-11-09 10:42:34,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:42:34,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:42:34,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:42:34,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:42:34,126 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:42:34,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2021-11-09 10:42:34,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data/21e416fe9/726f1159816a439dae2cf595d67a4442/FLAGffe22b85c [2021-11-09 10:42:34,859 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:42:34,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2021-11-09 10:42:34,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data/21e416fe9/726f1159816a439dae2cf595d67a4442/FLAGffe22b85c [2021-11-09 10:42:35,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data/21e416fe9/726f1159816a439dae2cf595d67a4442 [2021-11-09 10:42:35,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:42:35,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:42:35,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:42:35,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:42:35,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:42:35,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:35" (1/1) ... [2021-11-09 10:42:35,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50700c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:35, skipping insertion in model container [2021-11-09 10:42:35,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:35" (1/1) ... [2021-11-09 10:42:35,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:42:35,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:42:35,502 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_9c8d75d4-eaf4-4781-98be-11718f852e85/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i[948,961] [2021-11-09 10:42:35,517 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 10:42:35,522 INFO L168 Benchmark]: Toolchain (without parser) took 293.33 ms. Allocated memory is still 111.1 MB. Free memory was 70.2 MB in the beginning and 87.4 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:42:35,523 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 111.1 MB. Free memory is still 86.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:42:35,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.49 ms. Allocated memory is still 111.1 MB. Free memory was 70.0 MB in the beginning and 87.4 MB in the end (delta: -17.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:42:35,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 111.1 MB. Free memory is still 86.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.49 ms. Allocated memory is still 111.1 MB. Free memory was 70.0 MB in the beginning and 87.4 MB in the end (delta: -17.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: 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_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/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_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/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_9c8d75d4-eaf4-4781-98be-11718f852e85/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 f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:42:38,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:42:38,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:42:38,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:42:38,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:42:38,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:42:38,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:42:38,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:42:38,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:42:38,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:42:38,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:42:38,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:42:38,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:42:38,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:42:38,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:42:38,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:42:38,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:42:38,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:42:38,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:42:38,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:42:38,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:42:38,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:42:38,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:42:38,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:42:38,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:42:38,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:42:38,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:42:38,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:42:38,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:42:38,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:42:38,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:42:38,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:42:38,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:42:38,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:42:38,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:42:38,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:42:38,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:42:38,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:42:38,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:42:38,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:42:38,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:42:38,464 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 10:42:38,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:42:38,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:42:38,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:42:38,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:42:38,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:42:38,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:42:38,535 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:42:38,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:42:38,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:42:38,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:42:38,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:42:38,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:42:38,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:42:38,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:42:38,539 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:42:38,539 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:42:38,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:42:38,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:42:38,540 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:42:38,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:42:38,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:42:38,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:42:38,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:42:38,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:42:38,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:42:38,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:42:38,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:42:38,543 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:42:38,543 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:42:38,543 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:42:38,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:42:38,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:42:38,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:42:38,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:42:38,545 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_9c8d75d4-eaf4-4781-98be-11718f852e85/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 [2021-11-09 10:42:39,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:42:39,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:42:39,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:42:39,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:42:39,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:42:39,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2021-11-09 10:42:39,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data/eecd8c179/0fbee71a08fa41eea866bb2d07eec0a2/FLAG40d6d5b42 [2021-11-09 10:42:39,731 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:42:39,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2021-11-09 10:42:39,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data/eecd8c179/0fbee71a08fa41eea866bb2d07eec0a2/FLAG40d6d5b42 [2021-11-09 10:42:40,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/data/eecd8c179/0fbee71a08fa41eea866bb2d07eec0a2 [2021-11-09 10:42:40,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:42:40,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:42:40,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:42:40,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:42:40,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:42:40,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ccc95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40, skipping insertion in model container [2021-11-09 10:42:40,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:42:40,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:42:40,392 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_9c8d75d4-eaf4-4781-98be-11718f852e85/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i[948,961] [2021-11-09 10:42:40,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:42:40,451 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:42:40,468 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_9c8d75d4-eaf4-4781-98be-11718f852e85/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i[948,961] [2021-11-09 10:42:40,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:42:40,509 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:42:40,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40 WrapperNode [2021-11-09 10:42:40,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:42:40,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:42:40,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:42:40,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:42:40,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:42:40,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:42:40,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:42:40,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:42:40,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:42:40,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:42:40,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:42:40,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:42:40,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (1/1) ... [2021-11-09 10:42:40,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:42:40,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:40,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:42:40,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:42:40,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:42:40,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:42:40,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:42:40,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:42:44,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:42:44,303 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-09 10:42:44,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:44 BoogieIcfgContainer [2021-11-09 10:42:44,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:42:44,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:42:44,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:42:44,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:42:44,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:42:40" (1/3) ... [2021-11-09 10:42:44,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d303135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:44, skipping insertion in model container [2021-11-09 10:42:44,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:40" (2/3) ... [2021-11-09 10:42:44,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d303135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:44, skipping insertion in model container [2021-11-09 10:42:44,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:44" (3/3) ... [2021-11-09 10:42:44,317 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound1.i [2021-11-09 10:42:44,324 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:42:44,324 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-09 10:42:44,400 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:42:44,412 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 10:42:44,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-09 10:42:44,450 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 10:42:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:42:44,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:44,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:42:44,456 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 10:42:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:44,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-11-09 10:42:44,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:42:44,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98476677] [2021-11-09 10:42:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:44,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:42:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:42:44,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:42:44,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:42:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:44,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 10:42:44,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:42:45,128 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 10:42:45,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:42:45,302 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 10:42:45,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:42:45,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98476677] [2021-11-09 10:42:45,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98476677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:45,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:45,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 10:42:45,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395351979] [2021-11-09 10:42:45,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:42:45,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:42:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:42:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:42:45,336 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 10:42:45,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:45,362 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2021-11-09 10:42:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:42:45,364 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 10:42:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:45,396 INFO L225 Difference]: With dead ends: 59 [2021-11-09 10:42:45,396 INFO L226 Difference]: Without dead ends: 27 [2021-11-09 10:42:45,399 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 10:42:45,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-09 10:42:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-09 10:42:45,435 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 10:42:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-11-09 10:42:45,438 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2021-11-09 10:42:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:45,439 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-11-09 10:42:45,440 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 10:42:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-11-09 10:42:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:42:45,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:45,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:42:45,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:42:45,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:42:45,665 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 10:42:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-11-09 10:42:45,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:42:45,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94707661] [2021-11-09 10:42:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:45,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:42:45,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:42:45,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:42:45,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c8d75d4-eaf4-4781-98be-11718f852e85/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process