./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/forester-heap/dll-rb-sentinel-1.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 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:54:15,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:54:15,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:54:15,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:54:15,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:54:15,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:54:15,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:54:15,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:54:15,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:54:15,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:54:15,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:54:15,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:54:15,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:54:15,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:54:15,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:54:15,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:54:15,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:54:15,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:54:15,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:54:15,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:54:15,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:54:15,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:54:15,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:54:15,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:54:15,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:54:15,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:54:15,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:54:15,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:54:15,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:54:15,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:54:15,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:54:15,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:54:15,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:54:15,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:54:15,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:54:15,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:54:15,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:54:15,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:54:15,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:54:15,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:54:15,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:54:15,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:54:15,827 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:54:15,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:54:15,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:54:15,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:54:15,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:54:15,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:54:15,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:54:15,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:54:15,828 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:54:15,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:54:15,829 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:54:15,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:54:15,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:54:15,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:54:15,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:54:15,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:54:15,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:54:15,831 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:54:15,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:54:15,831 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:54:15,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:54:15,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:54:15,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:54:15,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:54:15,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:54:15,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:54:15,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:54:15,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:54:15,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:54:15,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:54:15,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:54:15,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:54:15,833 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:54:15,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:54:15,834 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:54:15,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503e46fe74670dc8b1fd2e8b2c5a408fc01c83cb421ff9aefb8796417315d291 [2023-02-16 00:54:16,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:54:16,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:54:16,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:54:16,114 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:54:16,114 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:54:16,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2023-02-16 00:54:17,234 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:54:17,480 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:54:17,480 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2023-02-16 00:54:17,492 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0721d82d/616948082451456a8a060cc8608f5d88/FLAG1b7b05f15 [2023-02-16 00:54:17,506 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0721d82d/616948082451456a8a060cc8608f5d88 [2023-02-16 00:54:17,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:54:17,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:54:17,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:54:17,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:54:17,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:54:17,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:17,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a976a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17, skipping insertion in model container [2023-02-16 00:54:17,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:17,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:54:17,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:54:17,824 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/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2023-02-16 00:54:17,831 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/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2023-02-16 00:54:17,832 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/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2023-02-16 00:54:17,835 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/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2023-02-16 00:54:17,836 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/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2023-02-16 00:54:17,837 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/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2023-02-16 00:54:17,838 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/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2023-02-16 00:54:17,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:54:17,854 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:54:17,900 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/forester-heap/dll-rb-sentinel-1.i[22665,22678] [2023-02-16 00:54:17,901 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/forester-heap/dll-rb-sentinel-1.i[22735,22748] [2023-02-16 00:54:17,901 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/forester-heap/dll-rb-sentinel-1.i[22799,22812] [2023-02-16 00:54:17,903 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/forester-heap/dll-rb-sentinel-1.i[22894,22907] [2023-02-16 00:54:17,903 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/forester-heap/dll-rb-sentinel-1.i[22966,22979] [2023-02-16 00:54:17,904 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/forester-heap/dll-rb-sentinel-1.i[23105,23118] [2023-02-16 00:54:17,905 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/forester-heap/dll-rb-sentinel-1.i[23179,23192] [2023-02-16 00:54:17,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:54:17,934 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:54:17,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17 WrapperNode [2023-02-16 00:54:17,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:54:17,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:54:17,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:54:17,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:54:17,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:17,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:17,993 INFO L138 Inliner]: procedures = 119, calls = 43, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 156 [2023-02-16 00:54:17,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:54:18,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:54:18,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:54:18,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:54:18,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:54:18,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:54:18,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:54:18,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:54:18,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (1/1) ... [2023-02-16 00:54:18,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:54:18,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:54:18,072 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) [2023-02-16 00:54:18,102 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 [2023-02-16 00:54:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:54:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:54:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 00:54:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:54:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 00:54:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 00:54:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:54:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:54:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:54:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:54:18,277 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:54:18,278 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:54:18,585 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:54:18,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:54:18,591 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2023-02-16 00:54:18,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:54:18 BoogieIcfgContainer [2023-02-16 00:54:18,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:54:18,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:54:18,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:54:18,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:54:18,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:54:17" (1/3) ... [2023-02-16 00:54:18,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38765cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:54:18, skipping insertion in model container [2023-02-16 00:54:18,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:54:17" (2/3) ... [2023-02-16 00:54:18,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38765cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:54:18, skipping insertion in model container [2023-02-16 00:54:18,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:54:18" (3/3) ... [2023-02-16 00:54:18,601 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2023-02-16 00:54:18,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:54:18,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-02-16 00:54:18,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:54:18,668 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;@7f69604b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:54:18,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-02-16 00:54:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 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) [2023-02-16 00:54:18,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 00:54:18,680 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:18,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 00:54:18,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash 891600134, now seen corresponding path program 1 times [2023-02-16 00:54:18,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:18,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696980394] [2023-02-16 00:54:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:18,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:18,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696980394] [2023-02-16 00:54:18,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696980394] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:54:18,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:54:18,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 00:54:18,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884965235] [2023-02-16 00:54:18,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:54:18,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 00:54:18,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 00:54:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:54:18,912 INFO L87 Difference]: Start difference. First operand has 47 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 46 states have internal predecessors, (76), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-16 00:54:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:18,935 INFO L93 Difference]: Finished difference Result 92 states and 150 transitions. [2023-02-16 00:54:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 00:54:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-02-16 00:54:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:18,943 INFO L225 Difference]: With dead ends: 92 [2023-02-16 00:54:18,944 INFO L226 Difference]: Without dead ends: 41 [2023-02-16 00:54:18,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:54:18,951 INFO L413 NwaCegarLoop]: 52 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, 52 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 [2023-02-16 00:54:18,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:54:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-16 00:54:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-02-16 00:54:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 40 states have internal predecessors, (44), 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) [2023-02-16 00:54:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-02-16 00:54:18,983 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2023-02-16 00:54:18,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:18,983 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-02-16 00:54:18,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-16 00:54:18,984 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-02-16 00:54:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 00:54:18,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:18,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:18,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:54:18,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1806905862, now seen corresponding path program 1 times [2023-02-16 00:54:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:18,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783844533] [2023-02-16 00:54:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:18,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:19,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:19,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783844533] [2023-02-16 00:54:19,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783844533] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:54:19,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:54:19,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:54:19,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114662382] [2023-02-16 00:54:19,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:54:19,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:54:19,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:54:19,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:54:19,200 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-16 00:54:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:19,276 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2023-02-16 00:54:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:54:19,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2023-02-16 00:54:19,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:19,277 INFO L225 Difference]: With dead ends: 47 [2023-02-16 00:54:19,277 INFO L226 Difference]: Without dead ends: 45 [2023-02-16 00:54:19,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:54:19,279 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:54:19,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 47 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:54:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-16 00:54:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2023-02-16 00:54:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 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) [2023-02-16 00:54:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-02-16 00:54:19,285 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 7 [2023-02-16 00:54:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:19,286 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-02-16 00:54:19,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-16 00:54:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-02-16 00:54:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 00:54:19,287 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:19,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:19,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 00:54:19,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:19,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash 179566605, now seen corresponding path program 1 times [2023-02-16 00:54:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:19,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223486451] [2023-02-16 00:54:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:19,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:19,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223486451] [2023-02-16 00:54:19,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223486451] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:54:19,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:54:19,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:54:19,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645283113] [2023-02-16 00:54:19,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:54:19,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:54:19,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:19,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:54:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:54:19,506 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-16 00:54:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:19,617 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2023-02-16 00:54:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:54:19,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2023-02-16 00:54:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:19,619 INFO L225 Difference]: With dead ends: 39 [2023-02-16 00:54:19,620 INFO L226 Difference]: Without dead ends: 37 [2023-02-16 00:54:19,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:54:19,621 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:54:19,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 69 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:54:19,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-16 00:54:19,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-16 00:54:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.25) internal successors, (40), 36 states have internal predecessors, (40), 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) [2023-02-16 00:54:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-02-16 00:54:19,633 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2023-02-16 00:54:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:19,633 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-02-16 00:54:19,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-02-16 00:54:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-02-16 00:54:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 00:54:19,634 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:19,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:19,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 00:54:19,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash 711412120, now seen corresponding path program 1 times [2023-02-16 00:54:19,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430264081] [2023-02-16 00:54:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:19,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:19,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430264081] [2023-02-16 00:54:19,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430264081] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:54:19,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:54:19,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:54:19,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876195322] [2023-02-16 00:54:19,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:54:19,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:54:19,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:54:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:54:19,906 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-02-16 00:54:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:20,042 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2023-02-16 00:54:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 00:54:20,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2023-02-16 00:54:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:20,045 INFO L225 Difference]: With dead ends: 62 [2023-02-16 00:54:20,045 INFO L226 Difference]: Without dead ends: 60 [2023-02-16 00:54:20,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:54:20,049 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 44 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:54:20,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 74 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:54:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-16 00:54:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2023-02-16 00:54:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 43 states have internal predecessors, (48), 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) [2023-02-16 00:54:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-02-16 00:54:20,057 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 10 [2023-02-16 00:54:20,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:20,058 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-02-16 00:54:20,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2023-02-16 00:54:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-02-16 00:54:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 00:54:20,059 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:20,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:20,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 00:54:20,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2056579816, now seen corresponding path program 1 times [2023-02-16 00:54:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:20,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055513859] [2023-02-16 00:54:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:20,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055513859] [2023-02-16 00:54:20,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055513859] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:54:20,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:54:20,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:54:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713836963] [2023-02-16 00:54:20,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:54:20,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:54:20,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:54:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:54:20,309 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-02-16 00:54:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:20,383 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-02-16 00:54:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:54:20,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-02-16 00:54:20,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:20,386 INFO L225 Difference]: With dead ends: 44 [2023-02-16 00:54:20,386 INFO L226 Difference]: Without dead ends: 42 [2023-02-16 00:54:20,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:54:20,393 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:54:20,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:54:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-16 00:54:20,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-02-16 00:54:20,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 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) [2023-02-16 00:54:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-16 00:54:20,404 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 11 [2023-02-16 00:54:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:20,404 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-16 00:54:20,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-02-16 00:54:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-16 00:54:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 00:54:20,405 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:20,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:20,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 00:54:20,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:20,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:20,406 INFO L85 PathProgramCache]: Analyzing trace with hash -688119236, now seen corresponding path program 1 times [2023-02-16 00:54:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:20,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350009706] [2023-02-16 00:54:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:21,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350009706] [2023-02-16 00:54:21,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350009706] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:54:21,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:54:21,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:54:21,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007158108] [2023-02-16 00:54:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:54:21,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:54:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:54:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:54:21,103 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-16 00:54:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:21,160 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2023-02-16 00:54:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:54:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-02-16 00:54:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:21,162 INFO L225 Difference]: With dead ends: 42 [2023-02-16 00:54:21,162 INFO L226 Difference]: Without dead ends: 40 [2023-02-16 00:54:21,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:54:21,163 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:54:21,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 38 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:54:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-16 00:54:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-02-16 00:54:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 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) [2023-02-16 00:54:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-02-16 00:54:21,169 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 13 [2023-02-16 00:54:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-02-16 00:54:21,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-16 00:54:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-02-16 00:54:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 00:54:21,170 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:21,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-16 00:54:21,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1285114177, now seen corresponding path program 1 times [2023-02-16 00:54:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973804435] [2023-02-16 00:54:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:21,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:21,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973804435] [2023-02-16 00:54:21,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973804435] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:54:21,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:54:21,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:54:21,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925257151] [2023-02-16 00:54:21,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:54:21,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:54:21,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:54:21,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:54:21,251 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-02-16 00:54:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:21,367 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2023-02-16 00:54:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 00:54:21,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2023-02-16 00:54:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:21,368 INFO L225 Difference]: With dead ends: 55 [2023-02-16 00:54:21,368 INFO L226 Difference]: Without dead ends: 43 [2023-02-16 00:54:21,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:54:21,369 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:54:21,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:54:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-16 00:54:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-02-16 00:54:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 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) [2023-02-16 00:54:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-16 00:54:21,380 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 14 [2023-02-16 00:54:21,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:21,380 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-16 00:54:21,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-02-16 00:54:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-16 00:54:21,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 00:54:21,381 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:21,381 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:21,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 00:54:21,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:21,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1621160418, now seen corresponding path program 1 times [2023-02-16 00:54:21,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:21,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114661739] [2023-02-16 00:54:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:21,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:21,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114661739] [2023-02-16 00:54:21,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114661739] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:54:21,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926291759] [2023-02-16 00:54:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:21,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:54:21,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:54:21,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:54:21,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:54:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:21,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 00:54:21,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:54:21,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:21,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:21,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2023-02-16 00:54:21,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:21,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:21,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2023-02-16 00:54:21,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 00:54:21,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:21,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2023-02-16 00:54:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:21,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:54:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:21,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926291759] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:54:21,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:54:21,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-16 00:54:21,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806764801] [2023-02-16 00:54:21,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:54:21,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 00:54:21,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:21,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 00:54:21,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:54:21,989 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2023-02-16 00:54:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:22,131 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2023-02-16 00:54:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 00:54:22,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) Word has length 17 [2023-02-16 00:54:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:22,132 INFO L225 Difference]: With dead ends: 59 [2023-02-16 00:54:22,132 INFO L226 Difference]: Without dead ends: 37 [2023-02-16 00:54:22,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-02-16 00:54:22,133 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:54:22,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 90 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:54:22,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-16 00:54:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-16 00:54:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 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) [2023-02-16 00:54:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-02-16 00:54:22,138 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2023-02-16 00:54:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:22,138 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-02-16 00:54:22,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2023-02-16 00:54:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-02-16 00:54:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 00:54:22,139 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:22,139 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:22,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:54:22,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:54:22,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:22,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:22,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1036168340, now seen corresponding path program 1 times [2023-02-16 00:54:22,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:22,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061456297] [2023-02-16 00:54:22,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:22,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:23,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:23,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061456297] [2023-02-16 00:54:23,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061456297] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:54:23,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337462352] [2023-02-16 00:54:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:23,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:54:23,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:54:23,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:54:23,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:54:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:23,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-16 00:54:23,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:54:23,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 00:54:23,602 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 00:54:23,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-02-16 00:54:23,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:23,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2023-02-16 00:54:23,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:23,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:23,672 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:54:23,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-02-16 00:54:23,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2023-02-16 00:54:23,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2023-02-16 00:54:23,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-02-16 00:54:23,709 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 00:54:23,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 00:54:23,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:23,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:23,787 INFO L321 Elim1Store]: treesize reduction 137, result has 7.4 percent of original size [2023-02-16 00:54:23,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 38 [2023-02-16 00:54:23,802 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-02-16 00:54:23,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-02-16 00:54:23,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 00:54:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:23,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:54:23,929 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:23,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-02-16 00:54:23,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 51 [2023-02-16 00:54:23,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-02-16 00:54:24,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:24,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 79 [2023-02-16 00:54:24,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 111 [2023-02-16 00:54:24,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 98 [2023-02-16 00:54:24,601 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:54:24,605 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-02-16 00:54:24,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2023-02-16 00:54:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:24,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337462352] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:54:24,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:54:24,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2023-02-16 00:54:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162801859] [2023-02-16 00:54:24,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:54:24,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 00:54:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:54:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 00:54:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2023-02-16 00:54:24,609 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 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) [2023-02-16 00:54:25,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:54:25,002 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2023-02-16 00:54:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 00:54:25,003 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 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 21 [2023-02-16 00:54:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:54:25,003 INFO L225 Difference]: With dead ends: 49 [2023-02-16 00:54:25,003 INFO L226 Difference]: Without dead ends: 47 [2023-02-16 00:54:25,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=305, Unknown=1, NotChecked=0, Total=420 [2023-02-16 00:54:25,004 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 177 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:54:25,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 82 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:54:25,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-16 00:54:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2023-02-16 00:54:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 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) [2023-02-16 00:54:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-02-16 00:54:25,010 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2023-02-16 00:54:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:54:25,010 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-02-16 00:54:25,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 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) [2023-02-16 00:54:25,010 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-02-16 00:54:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 00:54:25,011 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:54:25,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:54:25,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 00:54:25,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-16 00:54:25,218 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-16 00:54:25,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:54:25,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1438350182, now seen corresponding path program 1 times [2023-02-16 00:54:25,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:54:25,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514805618] [2023-02-16 00:54:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:25,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:54:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:26,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:54:26,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514805618] [2023-02-16 00:54:26,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514805618] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:54:26,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716859373] [2023-02-16 00:54:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:54:26,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:54:26,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:54:26,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:54:26,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:54:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:54:26,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 86 conjunts are in the unsatisfiable core [2023-02-16 00:54:26,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:54:26,951 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 00:54:26,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-02-16 00:54:27,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-02-16 00:54:27,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-02-16 00:54:27,032 INFO L321 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2023-02-16 00:54:27,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 78 [2023-02-16 00:54:27,048 INFO L321 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-02-16 00:54:27,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-02-16 00:54:27,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:27,074 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2023-02-16 00:54:27,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 42 [2023-02-16 00:54:27,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 00:54:27,091 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 00:54:27,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:27,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:27,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:27,172 INFO L321 Elim1Store]: treesize reduction 59, result has 25.3 percent of original size [2023-02-16 00:54:27,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 82 [2023-02-16 00:54:27,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2023-02-16 00:54:27,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:54:27,210 INFO L321 Elim1Store]: treesize reduction 115, result has 8.7 percent of original size [2023-02-16 00:54:27,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 92 [2023-02-16 00:54:27,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-02-16 00:54:27,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-02-16 00:54:27,240 INFO L321 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-02-16 00:54:27,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 46 [2023-02-16 00:54:27,581 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-02-16 00:54:27,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 53 [2023-02-16 00:54:27,630 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 00:54:27,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 23 [2023-02-16 00:54:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:54:27,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:54:27,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:27,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 125 [2023-02-16 00:54:27,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:27,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 107 [2023-02-16 00:54:27,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:27,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1111 treesize of output 888 [2023-02-16 00:54:27,945 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:27,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 879 treesize of output 624 [2023-02-16 00:54:47,335 WARN L233 SmtUtils]: Spent 19.19s on a formula simplification. DAG size of input: 1911 DAG size of output: 794 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-16 00:54:47,339 INFO L321 Elim1Store]: treesize reduction 4885, result has 33.1 percent of original size [2023-02-16 00:54:47,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 34 select indices, 34 select index equivalence classes, 0 disjoint index pairs (out of 561 index pairs), introduced 43 new quantified variables, introduced 561 case distinctions, treesize of input 5403168 treesize of output 4291020 [2023-02-16 00:54:50,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:50,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 775175557 treesize of output 670202488 [2023-02-16 00:54:52,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 670140657 treesize of output 661531409 [2023-02-16 00:54:53,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 661531409 treesize of output 640765457 [2023-02-16 00:54:55,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 640827273 treesize of output 629268253 [2023-02-16 00:54:58,670 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:54:58,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 614524951 treesize of output 610049415 [2023-02-16 00:55:00,922 INFO L217 Elim1Store]: Index analysis took 193 ms [2023-02-16 00:55:02,215 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:02,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 297791106 treesize of output 297208760 [2023-02-16 00:55:04,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:04,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 599463330 treesize of output 597023226 [2023-02-16 00:55:06,796 INFO L217 Elim1Store]: Index analysis took 198 ms [2023-02-16 00:55:08,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:08,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 203951188 treesize of output 202780190 [2023-02-16 00:55:10,385 INFO L217 Elim1Store]: Index analysis took 477 ms [2023-02-16 00:55:12,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:12,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 21939850 treesize of output 21773868 [2023-02-16 00:55:15,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:15,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15524535 treesize of output 15524536 [2023-02-16 00:55:17,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:17,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 605689273 treesize of output 595997159 [2023-02-16 00:55:19,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:19,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 549393186 treesize of output 512398530 [2023-02-16 00:55:23,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:23,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 531530893 treesize of output 519961811 [2023-02-16 00:55:25,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 519961635 treesize of output 488600213 [2023-02-16 00:55:26,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 472161468 treesize of output 456991782 [2023-02-16 00:55:28,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:28,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 473430579 treesize of output 464984157 [2023-02-16 00:55:30,994 INFO L217 Elim1Store]: Index analysis took 215 ms [2023-02-16 00:55:32,362 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:32,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 159745104 treesize of output 159661358 [2023-02-16 00:55:34,199 INFO L217 Elim1Store]: Index analysis took 136 ms [2023-02-16 00:55:35,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:55:35,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 161837650 treesize of output 161798520 [2023-02-16 00:55:37,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 480895920 treesize of output 447269094 [2023-02-16 00:55:39,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 439317415 treesize of output 422680565