./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 a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:08:23,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:08:23,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:08:23,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:08:23,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:08:23,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:08:23,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:08:23,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:08:23,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:08:23,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:08:23,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:08:23,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:08:23,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:08:23,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:08:23,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:08:23,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:08:23,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:08:23,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:08:23,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:08:23,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:08:23,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:08:23,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:08:23,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:08:23,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:08:23,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:08:23,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:08:23,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:08:23,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:08:23,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:08:23,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:08:23,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:08:23,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:08:23,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:08:23,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:08:23,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:08:23,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:08:23,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:08:23,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:08:23,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:08:23,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:08:23,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:08:23,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 12:08:23,276 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:08:23,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:08:23,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:08:23,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:08:23,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:08:23,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:08:23,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:08:23,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:08:23,280 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:08:23,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:08:23,281 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:08:23,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:08:23,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:08:23,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:08:23,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 12:08:23,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:08:23,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 12:08:23,282 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:08:23,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 12:08:23,282 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:08:23,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 12:08:23,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:08:23,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:08:23,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:08:23,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:08:23,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:08:23,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:08:23,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 12:08:23,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 12:08:23,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 12:08:23,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:08:23,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 12:08:23,285 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:08:23,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:08:23,285 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:08:23,285 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 [2023-02-15 12:08:23,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:08:23,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:08:23,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:08:23,542 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:08:23,542 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:08:23,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2023-02-15 12:08:24,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:08:24,797 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:08:24,797 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2023-02-15 12:08:24,803 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226ec3b15/0c9a42e13789436e876a5b88b9ffffc2/FLAG35187cafa [2023-02-15 12:08:24,816 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/226ec3b15/0c9a42e13789436e876a5b88b9ffffc2 [2023-02-15 12:08:24,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:08:24,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:08:24,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:08:24,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:08:24,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:08:24,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:08:24" (1/1) ... [2023-02-15 12:08:24,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52206ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:24, skipping insertion in model container [2023-02-15 12:08:24,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:08:24" (1/1) ... [2023-02-15 12:08:24,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:08:24,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:08:24,979 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i[948,961] [2023-02-15 12:08:24,988 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:806) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2063) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:242) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1420) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1094) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1496) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3320) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2395) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-02-15 12:08:24,993 INFO L158 Benchmark]: Toolchain (without parser) took 172.11ms. Allocated memory is still 159.4MB. Free memory was 113.1MB in the beginning and 104.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 12:08:24,993 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 12:08:24,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.97ms. Allocated memory is still 159.4MB. Free memory was 113.1MB in the beginning and 104.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 12:08:24,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.97ms. Allocated memory is still 159.4MB. Free memory was 113.1MB in the beginning and 104.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:806) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:08:26,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:08:26,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:08:26,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:08:26,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:08:26,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:08:26,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:08:26,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:08:26,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:08:26,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:08:26,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:08:26,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:08:26,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:08:26,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:08:26,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:08:26,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:08:26,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:08:26,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:08:26,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:08:26,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:08:26,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:08:26,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:08:26,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:08:26,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:08:26,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:08:26,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:08:26,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:08:26,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:08:26,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:08:26,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:08:26,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:08:26,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:08:26,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:08:26,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:08:26,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:08:26,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:08:26,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:08:26,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:08:26,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:08:26,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:08:26,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:08:26,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-15 12:08:26,952 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:08:26,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:08:26,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:08:26,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:08:26,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:08:26,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:08:26,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:08:26,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:08:26,955 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:08:26,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:08:26,956 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:08:26,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:08:26,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:08:26,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 12:08:26,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:08:26,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 12:08:26,957 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 12:08:26,957 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 12:08:26,958 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 12:08:26,958 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:08:26,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 12:08:26,958 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:08:26,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 12:08:26,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:08:26,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:08:26,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:08:26,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:08:26,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:08:26,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:08:26,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 12:08:26,960 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 12:08:26,960 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 12:08:26,960 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:08:26,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 12:08:26,961 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:08:26,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:08:26,961 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 12:08:26,961 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:08:26,961 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7c2c0f04a8ec4985dc8297aaa6f2bb0534ef908d102354702fc27f17d7b5004 [2023-02-15 12:08:27,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:08:27,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:08:27,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:08:27,284 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:08:27,284 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:08:27,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2023-02-15 12:08:28,520 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:08:28,724 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:08:28,724 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i [2023-02-15 12:08:28,730 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/106e29ab3/69827b7b5aad4fb6b08b2790cbf0630e/FLAGf67b52419 [2023-02-15 12:08:28,741 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/106e29ab3/69827b7b5aad4fb6b08b2790cbf0630e [2023-02-15 12:08:28,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:08:28,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:08:28,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:08:28,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:08:28,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:08:28,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:08:28" (1/1) ... [2023-02-15 12:08:28,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1dbce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:28, skipping insertion in model container [2023-02-15 12:08:28,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:08:28" (1/1) ... [2023-02-15 12:08:28,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:08:28,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:08:28,934 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i[948,961] [2023-02-15 12:08:28,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:08:29,005 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 12:08:29,023 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound1.i[948,961] [2023-02-15 12:08:29,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:08:29,068 INFO L208 MainTranslator]: Completed translation [2023-02-15 12:08:29,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29 WrapperNode [2023-02-15 12:08:29,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:08:29,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 12:08:29,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 12:08:29,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 12:08:29,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,121 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2023-02-15 12:08:29,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 12:08:29,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 12:08:29,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 12:08:29,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 12:08:29,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,167 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 12:08:29,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 12:08:29,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 12:08:29,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 12:08:29,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (1/1) ... [2023-02-15 12:08:29,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:08:29,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:08:29,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 12:08:29,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 12:08:29,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 12:08:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 12:08:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 12:08:29,248 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 12:08:29,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 12:08:29,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 12:08:29,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 12:08:29,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 12:08:29,298 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 12:08:29,300 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 12:08:32,261 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 12:08:32,266 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 12:08:32,267 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 12:08:32,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:08:32 BoogieIcfgContainer [2023-02-15 12:08:32,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 12:08:32,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 12:08:32,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 12:08:32,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 12:08:32,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:08:28" (1/3) ... [2023-02-15 12:08:32,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a10b741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:08:32, skipping insertion in model container [2023-02-15 12:08:32,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:08:29" (2/3) ... [2023-02-15 12:08:32,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a10b741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:08:32, skipping insertion in model container [2023-02-15 12:08:32,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:08:32" (3/3) ... [2023-02-15 12:08:32,276 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound1.i [2023-02-15 12:08:32,288 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 12:08:32,288 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 12:08:32,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 12:08:32,332 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1eef31c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 12:08:32,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 12:08:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 12:08:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 12:08:32,340 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:08:32,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:08:32,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:08:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:08:32,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1511169482, now seen corresponding path program 1 times [2023-02-15 12:08:32,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:08:32,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252603870] [2023-02-15 12:08:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:08:32,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:08:32,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:08:32,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:08:32,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 12:08:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:08:32,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 12:08:32,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:08:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 12:08:32,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 12:08:32,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 12:08:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252603870] [2023-02-15 12:08:32,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252603870] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:08:32,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:08:32,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 12:08:32,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844109810] [2023-02-15 12:08:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:08:32,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 12:08:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 12:08:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 12:08:32,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 12:08:32,727 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:08:32,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:08:32,744 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2023-02-15 12:08:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 12:08:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-15 12:08:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:08:32,752 INFO L225 Difference]: With dead ends: 55 [2023-02-15 12:08:32,752 INFO L226 Difference]: Without dead ends: 25 [2023-02-15 12:08:32,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 12:08:32,760 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:08:32,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:08:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-15 12:08:32,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-15 12:08:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 12:08:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-02-15 12:08:32,796 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 19 [2023-02-15 12:08:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:08:32,797 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-02-15 12:08:32,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:08:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-02-15 12:08:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 12:08:32,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:08:32,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:08:32,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-15 12:08:33,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:08:33,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:08:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:08:33,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1110907126, now seen corresponding path program 1 times [2023-02-15 12:08:33,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 12:08:33,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61656709] [2023-02-15 12:08:33,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:08:33,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 12:08:33,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 12:08:33,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 12:08:33,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process