./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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-queue-2.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 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 14:01:26,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 14:01:26,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 14:01:26,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 14:01:26,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 14:01:26,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 14:01:26,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 14:01:26,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 14:01:26,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 14:01:26,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 14:01:26,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 14:01:26,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 14:01:26,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 14:01:26,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 14:01:26,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 14:01:26,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 14:01:26,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 14:01:26,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 14:01:26,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 14:01:26,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 14:01:26,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 14:01:26,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 14:01:26,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 14:01:26,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 14:01:26,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 14:01:26,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 14:01:26,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 14:01:26,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 14:01:26,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 14:01:26,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 14:01:26,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 14:01:26,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 14:01:26,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 14:01:26,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 14:01:26,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 14:01:26,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 14:01:26,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 14:01:26,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 14:01:26,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 14:01:26,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 14:01:26,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 14:01:26,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 14:01:26,982 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 14:01:26,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 14:01:26,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 14:01:26,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 14:01:26,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 14:01:26,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 14:01:26,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 14:01:26,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 14:01:26,985 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 14:01:26,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 14:01:26,986 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 14:01:26,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 14:01:26,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 14:01:26,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 14:01:26,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 14:01:26,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 14:01:26,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 14:01:26,988 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 14:01:26,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 14:01:26,988 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 14:01:26,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 14:01:26,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 14:01:26,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 14:01:26,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 14:01:26,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 14:01:26,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 14:01:26,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 14:01:26,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 14:01:26,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 14:01:26,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 14:01:26,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 14:01:26,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 14:01:26,992 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 14:01:26,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 14:01:26,992 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 14:01:26,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 [2023-02-18 14:01:27,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 14:01:27,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 14:01:27,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 14:01:27,257 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 14:01:27,257 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 14:01:27,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-queue-2.i [2023-02-18 14:01:28,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 14:01:28,532 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 14:01:28,533 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-queue-2.i [2023-02-18 14:01:28,558 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c02fdfa8/e5682dbf0f0d493eacb8bf7fb9c38808/FLAGeb1277d44 [2023-02-18 14:01:28,568 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c02fdfa8/e5682dbf0f0d493eacb8bf7fb9c38808 [2023-02-18 14:01:28,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 14:01:28,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 14:01:28,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 14:01:28,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 14:01:28,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 14:01:28,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ffad37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28, skipping insertion in model container [2023-02-18 14:01:28,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 14:01:28,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 14:01:28,830 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-queue-2.i[22460,22473] [2023-02-18 14:01:28,835 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-queue-2.i[22531,22544] [2023-02-18 14:01:28,836 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-queue-2.i[22605,22618] [2023-02-18 14:01:28,836 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-queue-2.i[22697,22710] [2023-02-18 14:01:28,837 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-queue-2.i[22774,22787] [2023-02-18 14:01:28,838 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-queue-2.i[22869,22882] [2023-02-18 14:01:28,838 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-queue-2.i[22946,22959] [2023-02-18 14:01:28,839 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-queue-2.i[23029,23042] [2023-02-18 14:01:28,840 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-queue-2.i[23124,23137] [2023-02-18 14:01:28,841 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-queue-2.i[23201,23214] [2023-02-18 14:01:28,841 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-queue-2.i[23284,23297] [2023-02-18 14:01:28,842 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-queue-2.i[23373,23386] [2023-02-18 14:01:28,843 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-queue-2.i[23459,23472] [2023-02-18 14:01:28,844 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-queue-2.i[23604,23617] [2023-02-18 14:01:28,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 14:01:28,854 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 14:01:28,882 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-queue-2.i[22460,22473] [2023-02-18 14:01:28,882 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-queue-2.i[22531,22544] [2023-02-18 14:01:28,883 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-queue-2.i[22605,22618] [2023-02-18 14:01:28,884 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-queue-2.i[22697,22710] [2023-02-18 14:01:28,884 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-queue-2.i[22774,22787] [2023-02-18 14:01:28,885 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-queue-2.i[22869,22882] [2023-02-18 14:01:28,886 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-queue-2.i[22946,22959] [2023-02-18 14:01:28,886 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-queue-2.i[23029,23042] [2023-02-18 14:01:28,887 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-queue-2.i[23124,23137] [2023-02-18 14:01:28,888 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-queue-2.i[23201,23214] [2023-02-18 14:01:28,889 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-queue-2.i[23284,23297] [2023-02-18 14:01:28,889 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-queue-2.i[23373,23386] [2023-02-18 14:01:28,890 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-queue-2.i[23459,23472] [2023-02-18 14:01:28,891 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-queue-2.i[23604,23617] [2023-02-18 14:01:28,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 14:01:28,913 INFO L208 MainTranslator]: Completed translation [2023-02-18 14:01:28,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28 WrapperNode [2023-02-18 14:01:28,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 14:01:28,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 14:01:28,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 14:01:28,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 14:01:28,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,952 INFO L138 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 223 [2023-02-18 14:01:28,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 14:01:28,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 14:01:28,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 14:01:28,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 14:01:28,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,981 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 14:01:28,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 14:01:28,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 14:01:28,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 14:01:28,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (1/1) ... [2023-02-18 14:01:28,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 14:01:29,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:01:29,026 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) [2023-02-18 14:01:29,043 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 [2023-02-18 14:01:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 14:01:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 14:01:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 14:01:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 14:01:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 14:01:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 14:01:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 14:01:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 14:01:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 14:01:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 14:01:29,170 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 14:01:29,174 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 14:01:29,463 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 14:01:29,470 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 14:01:29,470 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2023-02-18 14:01:29,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:01:29 BoogieIcfgContainer [2023-02-18 14:01:29,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 14:01:29,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 14:01:29,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 14:01:29,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 14:01:29,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:01:28" (1/3) ... [2023-02-18 14:01:29,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520c13ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:01:29, skipping insertion in model container [2023-02-18 14:01:29,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:01:28" (2/3) ... [2023-02-18 14:01:29,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520c13ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:01:29, skipping insertion in model container [2023-02-18 14:01:29,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:01:29" (3/3) ... [2023-02-18 14:01:29,480 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2023-02-18 14:01:29,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 14:01:29,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-02-18 14:01:29,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 14:01:29,542 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;@3ce4a5ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 14:01:29,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-02-18 14:01:29,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 70 states have (on average 2.0) internal successors, (140), 84 states have internal predecessors, (140), 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) [2023-02-18 14:01:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-18 14:01:29,566 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:29,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-18 14:01:29,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-02-18 14:01:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash 28752478, now seen corresponding path program 1 times [2023-02-18 14:01:29,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:29,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955857839] [2023-02-18 14:01:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:29,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:29,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:29,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955857839] [2023-02-18 14:01:29,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955857839] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:29,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:29,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 14:01:29,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329362142] [2023-02-18 14:01:29,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:29,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 14:01:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:29,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 14:01:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 14:01:29,771 INFO L87 Difference]: Start difference. First operand has 85 states, 70 states have (on average 2.0) internal successors, (140), 84 states have internal predecessors, (140), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-02-18 14:01:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:29,809 INFO L93 Difference]: Finished difference Result 168 states and 278 transitions. [2023-02-18 14:01:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 14:01:29,811 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-02-18 14:01:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:29,820 INFO L225 Difference]: With dead ends: 168 [2023-02-18 14:01:29,820 INFO L226 Difference]: Without dead ends: 80 [2023-02-18 14:01:29,823 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 [2023-02-18 14:01:29,829 INFO L413 NwaCegarLoop]: 95 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, 95 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 [2023-02-18 14:01:29,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:01:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-18 14:01:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-02-18 14:01:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 79 states have internal predecessors, (89), 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) [2023-02-18 14:01:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2023-02-18 14:01:29,873 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 5 [2023-02-18 14:01:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:29,874 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2023-02-18 14:01:29,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-02-18 14:01:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2023-02-18 14:01:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 14:01:29,875 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:29,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 14:01:29,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 14:01:29,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-02-18 14:01:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:29,877 INFO L85 PathProgramCache]: Analyzing trace with hash 889571111, now seen corresponding path program 1 times [2023-02-18 14:01:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:29,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993431688] [2023-02-18 14:01:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:29,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993431688] [2023-02-18 14:01:29,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993431688] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:29,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:29,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 14:01:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736684151] [2023-02-18 14:01:29,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:29,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 14:01:29,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 14:01:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 14:01:29,978 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-02-18 14:01:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:30,022 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2023-02-18 14:01:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 14:01:30,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2023-02-18 14:01:30,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:30,023 INFO L225 Difference]: With dead ends: 80 [2023-02-18 14:01:30,024 INFO L226 Difference]: Without dead ends: 70 [2023-02-18 14:01:30,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 14:01:30,025 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 75 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:30,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 67 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:01:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-18 14:01:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-02-18 14:01:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 69 states have internal predecessors, (79), 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) [2023-02-18 14:01:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2023-02-18 14:01:30,042 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 6 [2023-02-18 14:01:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:30,043 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2023-02-18 14:01:30,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2023-02-18 14:01:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2023-02-18 14:01:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 14:01:30,044 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:30,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:30,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 14:01:30,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-02-18 14:01:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1270244236, now seen corresponding path program 1 times [2023-02-18 14:01:30,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:30,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611366139] [2023-02-18 14:01:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:30,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:30,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611366139] [2023-02-18 14:01:30,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611366139] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:30,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:30,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 14:01:30,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948073760] [2023-02-18 14:01:30,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:30,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 14:01:30,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:30,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 14:01:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 14:01:30,567 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-18 14:01:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:30,679 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2023-02-18 14:01:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 14:01:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-02-18 14:01:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:30,680 INFO L225 Difference]: With dead ends: 119 [2023-02-18 14:01:30,681 INFO L226 Difference]: Without dead ends: 117 [2023-02-18 14:01:30,681 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 [2023-02-18 14:01:30,682 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 159 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:30,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 124 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 14:01:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-18 14:01:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 68. [2023-02-18 14:01:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 67 states have internal predecessors, (77), 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) [2023-02-18 14:01:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2023-02-18 14:01:30,691 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 9 [2023-02-18 14:01:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:30,691 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2023-02-18 14:01:30,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-18 14:01:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2023-02-18 14:01:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 14:01:30,692 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:30,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:30,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 14:01:30,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-02-18 14:01:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:30,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1286414876, now seen corresponding path program 1 times [2023-02-18 14:01:30,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:30,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139559745] [2023-02-18 14:01:30,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:30,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:30,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:30,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139559745] [2023-02-18 14:01:30,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139559745] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:30,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:30,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 14:01:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570606398] [2023-02-18 14:01:30,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:30,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 14:01:30,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:30,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 14:01:30,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 14:01:30,743 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-02-18 14:01:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:30,780 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2023-02-18 14:01:30,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 14:01:30,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2023-02-18 14:01:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:30,783 INFO L225 Difference]: With dead ends: 153 [2023-02-18 14:01:30,783 INFO L226 Difference]: Without dead ends: 87 [2023-02-18 14:01:30,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 14:01:30,787 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 17 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:30,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 135 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:01:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-18 14:01:30,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2023-02-18 14:01:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 75 states have internal predecessors, (86), 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) [2023-02-18 14:01:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2023-02-18 14:01:30,801 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 12 [2023-02-18 14:01:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:30,802 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2023-02-18 14:01:30,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-02-18 14:01:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2023-02-18 14:01:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 14:01:30,802 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:30,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:30,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 14:01:30,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-02-18 14:01:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash -138012862, now seen corresponding path program 1 times [2023-02-18 14:01:30,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:30,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527241916] [2023-02-18 14:01:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:30,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:30,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527241916] [2023-02-18 14:01:30,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527241916] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:01:30,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:01:30,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 14:01:30,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650586814] [2023-02-18 14:01:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:01:30,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 14:01:30,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:01:30,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 14:01:30,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:01:30,886 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2023-02-18 14:01:30,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:01:30,947 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2023-02-18 14:01:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 14:01:30,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 [2023-02-18 14:01:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:01:30,948 INFO L225 Difference]: With dead ends: 91 [2023-02-18 14:01:30,948 INFO L226 Difference]: Without dead ends: 71 [2023-02-18 14:01:30,948 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 [2023-02-18 14:01:30,949 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 6 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:01:30,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 265 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:01:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-18 14:01:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-02-18 14:01:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.253968253968254) internal successors, (79), 70 states have internal predecessors, (79), 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) [2023-02-18 14:01:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2023-02-18 14:01:30,955 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 17 [2023-02-18 14:01:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:01:30,956 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2023-02-18 14:01:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2023-02-18 14:01:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2023-02-18 14:01:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 14:01:30,957 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:01:30,957 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:01:30,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 14:01:30,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2023-02-18 14:01:30,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:01:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash -472870040, now seen corresponding path program 1 times [2023-02-18 14:01:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:01:30,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690674064] [2023-02-18 14:01:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:30,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:01:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:01:31,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:01:31,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690674064] [2023-02-18 14:01:31,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690674064] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:01:31,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746183580] [2023-02-18 14:01:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:01:31,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:01:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:01:31,651 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) [2023-02-18 14:01:31,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 14:01:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:01:31,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 14:01:31,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:01:31,806 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 6 treesize of output 5 [2023-02-18 14:01:31,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 36 treesize of output 27 [2023-02-18 14:01:31,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:31,858 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 61 treesize of output 102 [2023-02-18 14:01:31,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:31,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 17 [2023-02-18 14:01:31,881 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 [2023-02-18 14:01:31,902 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 76 treesize of output 54 [2023-02-18 14:01:31,906 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 71 treesize of output 51 [2023-02-18 14:01:31,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:31,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 158 treesize of output 184 [2023-02-18 14:01:32,045 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 145 treesize of output 119 [2023-02-18 14:01:32,076 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 144 treesize of output 118 [2023-02-18 14:01:32,082 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,089 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,090 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,095 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,096 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,105 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,107 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,108 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,110 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,116 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,124 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,125 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,135 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,192 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 39 treesize of output 27 [2023-02-18 14:01:32,250 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,278 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 30 treesize of output 20 [2023-02-18 14:01:32,302 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,308 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,310 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,315 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,319 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,320 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,340 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,344 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,345 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,359 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:32,363 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:01:33,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:01:33,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 26 new quantified variables, introduced 153 case distinctions, treesize of input 1172 treesize of output 1980