/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:28:02,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:28:02,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:28:02,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:28:02,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:28:02,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:28:02,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:28:02,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:28:02,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:28:02,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:28:02,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:28:02,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:28:02,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:28:02,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:28:02,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:28:02,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:28:02,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:28:02,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:28:02,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:28:02,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:28:02,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:28:02,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:28:02,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:28:02,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:28:02,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:28:02,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:28:02,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:28:02,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:28:02,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:28:02,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:28:02,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:28:02,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:28:02,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:28:02,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:28:02,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:28:02,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:28:02,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:28:02,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:28:02,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:28:02,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:28:02,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:28:02,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:28:02,961 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:28:02,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:28:02,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:28:02,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:28:02,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:28:02,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:28:02,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:28:02,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:28:02,964 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:28:02,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:28:02,965 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:28:02,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:28:02,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:28:02,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:28:02,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:28:02,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:28:02,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:28:02,966 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:28:02,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:28:02,966 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:28:02,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:28:02,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:28:02,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:28:02,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:28:02,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:28:02,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:28:02,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:28:02,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:28:02,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:28:02,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:28:02,968 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:28:02,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:28:02,968 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:28:02,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:28:02,969 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:28:02,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:28:03,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:28:03,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:28:03,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:28:03,216 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:28:03,216 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:28:03,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:28:04,336 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:28:04,555 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:28:04,556 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:28:04,578 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7ea2df0/2d2ad32dc6cc417b87507fd6a2418d1e/FLAGd07b33aa3 [2023-04-02 06:28:04,897 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7ea2df0/2d2ad32dc6cc417b87507fd6a2418d1e [2023-04-02 06:28:04,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:28:04,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:28:04,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:28:04,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:28:04,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:28:04,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:28:04" (1/1) ... [2023-04-02 06:28:04,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de3486b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:04, skipping insertion in model container [2023-04-02 06:28:04,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:28:04" (1/1) ... [2023-04-02 06:28:04,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:28:04,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:28:05,240 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8893,8906] [2023-04-02 06:28:05,264 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12165,12178] [2023-04-02 06:28:05,280 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13321,13334] [2023-04-02 06:28:05,290 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13977,13990] [2023-04-02 06:28:05,301 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15456,15469] [2023-04-02 06:28:05,305 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16112,16125] [2023-04-02 06:28:05,313 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17096,17109] [2023-04-02 06:28:05,322 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19392,19405] [2023-04-02 06:28:05,325 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20051,20064] [2023-04-02 06:28:05,329 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21033,21046] [2023-04-02 06:28:05,337 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22824,22837] [2023-04-02 06:28:05,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:28:05,449 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:28:05,493 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8893,8906] [2023-04-02 06:28:05,505 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12165,12178] [2023-04-02 06:28:05,512 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13321,13334] [2023-04-02 06:28:05,515 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13977,13990] [2023-04-02 06:28:05,519 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15456,15469] [2023-04-02 06:28:05,521 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16112,16125] [2023-04-02 06:28:05,524 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17096,17109] [2023-04-02 06:28:05,540 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19392,19405] [2023-04-02 06:28:05,542 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20051,20064] [2023-04-02 06:28:05,545 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21033,21046] [2023-04-02 06:28:05,549 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22824,22837] [2023-04-02 06:28:05,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:28:05,621 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:28:05,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05 WrapperNode [2023-04-02 06:28:05,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:28:05,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:28:05,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:28:05,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:28:05,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,743 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:28:05,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:28:05,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:28:05,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:28:05,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (1/1) ... [2023-04-02 06:28:05,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:28:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:28:05,798 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) [2023-04-02 06:28:05,805 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 [2023-04-02 06:28:05,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:28:05,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:28:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:28:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:28:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:28:05,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:28:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:28:05,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:28:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:28:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:28:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:28:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:28:06,027 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:28:06,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:28:07,095 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:28:07,112 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:28:07,112 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:28:07,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:28:07 BoogieIcfgContainer [2023-04-02 06:28:07,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:28:07,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:28:07,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:28:07,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:28:07,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:28:04" (1/3) ... [2023-04-02 06:28:07,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23581093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:28:07, skipping insertion in model container [2023-04-02 06:28:07,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:28:05" (2/3) ... [2023-04-02 06:28:07,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23581093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:28:07, skipping insertion in model container [2023-04-02 06:28:07,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:28:07" (3/3) ... [2023-04-02 06:28:07,125 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:28:07,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:28:07,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-04-02 06:28:07,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:28:07,192 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;@78183c90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:28:07,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-04-02 06:28:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 346 states have (on average 1.8352601156069364) internal successors, (635), 358 states have internal predecessors, (635), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:28:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 06:28:07,212 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:07,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:07,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:07,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:07,218 INFO L85 PathProgramCache]: Analyzing trace with hash 406944274, now seen corresponding path program 1 times [2023-04-02 06:28:07,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:07,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180153378] [2023-04-02 06:28:07,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:08,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:08,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180153378] [2023-04-02 06:28:08,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180153378] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:08,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:08,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:28:08,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603693222] [2023-04-02 06:28:08,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:08,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:28:08,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:28:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:28:08,183 INFO L87 Difference]: Start difference. First operand has 363 states, 346 states have (on average 1.8352601156069364) internal successors, (635), 358 states have internal predecessors, (635), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:09,909 INFO L93 Difference]: Finished difference Result 579 states and 980 transitions. [2023-04-02 06:28:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:28:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-04-02 06:28:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:09,920 INFO L225 Difference]: With dead ends: 579 [2023-04-02 06:28:09,921 INFO L226 Difference]: Without dead ends: 299 [2023-04-02 06:28:09,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:28:09,927 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1453 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:09,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 387 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:28:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-04-02 06:28:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-04-02 06:28:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 285 states have (on average 1.2912280701754386) internal successors, (368), 295 states have internal predecessors, (368), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 371 transitions. [2023-04-02 06:28:09,981 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 371 transitions. Word has length 62 [2023-04-02 06:28:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:09,981 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 371 transitions. [2023-04-02 06:28:09,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 371 transitions. [2023-04-02 06:28:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 06:28:09,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:09,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:09,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:28:09,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:09,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:09,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1330641949, now seen corresponding path program 1 times [2023-04-02 06:28:09,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:09,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506838734] [2023-04-02 06:28:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:09,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:10,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:10,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506838734] [2023-04-02 06:28:10,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506838734] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:10,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:10,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:28:10,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615229631] [2023-04-02 06:28:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:10,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:28:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:28:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:28:10,453 INFO L87 Difference]: Start difference. First operand 299 states and 371 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:11,473 INFO L93 Difference]: Finished difference Result 501 states and 638 transitions. [2023-04-02 06:28:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:28:11,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2023-04-02 06:28:11,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:11,476 INFO L225 Difference]: With dead ends: 501 [2023-04-02 06:28:11,476 INFO L226 Difference]: Without dead ends: 273 [2023-04-02 06:28:11,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:28:11,479 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 949 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:11,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 217 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:28:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-04-02 06:28:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-04-02 06:28:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 259 states have (on average 1.3011583011583012) internal successors, (337), 269 states have internal predecessors, (337), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 340 transitions. [2023-04-02 06:28:11,529 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 340 transitions. Word has length 63 [2023-04-02 06:28:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:11,529 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 340 transitions. [2023-04-02 06:28:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 340 transitions. [2023-04-02 06:28:11,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-02 06:28:11,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:11,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:11,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:28:11,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:11,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:11,533 INFO L85 PathProgramCache]: Analyzing trace with hash -354873680, now seen corresponding path program 1 times [2023-04-02 06:28:11,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:11,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041208892] [2023-04-02 06:28:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:11,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:11,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:11,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:11,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041208892] [2023-04-02 06:28:11,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041208892] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:11,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:11,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:28:11,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914364759] [2023-04-02 06:28:11,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:11,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:28:11,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:11,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:28:11,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:28:11,931 INFO L87 Difference]: Start difference. First operand 273 states and 340 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:12,865 INFO L93 Difference]: Finished difference Result 475 states and 606 transitions. [2023-04-02 06:28:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:28:12,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-04-02 06:28:12,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:12,867 INFO L225 Difference]: With dead ends: 475 [2023-04-02 06:28:12,867 INFO L226 Difference]: Without dead ends: 263 [2023-04-02 06:28:12,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:28:12,869 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 895 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:12,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 203 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:28:12,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-04-02 06:28:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-04-02 06:28:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 249 states have (on average 1.3012048192771084) internal successors, (324), 259 states have internal predecessors, (324), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:12,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 327 transitions. [2023-04-02 06:28:12,892 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 327 transitions. Word has length 64 [2023-04-02 06:28:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:12,892 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 327 transitions. [2023-04-02 06:28:12,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 327 transitions. [2023-04-02 06:28:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-02 06:28:12,894 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:12,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:12,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:28:12,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:12,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1525784987, now seen corresponding path program 1 times [2023-04-02 06:28:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:12,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441713871] [2023-04-02 06:28:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:12,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441713871] [2023-04-02 06:28:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441713871] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:13,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:13,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:28:13,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169880010] [2023-04-02 06:28:13,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:13,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:28:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:13,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:28:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:28:13,225 INFO L87 Difference]: Start difference. First operand 263 states and 327 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:14,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:14,186 INFO L93 Difference]: Finished difference Result 598 states and 766 transitions. [2023-04-02 06:28:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:28:14,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-04-02 06:28:14,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:14,188 INFO L225 Difference]: With dead ends: 598 [2023-04-02 06:28:14,188 INFO L226 Difference]: Without dead ends: 382 [2023-04-02 06:28:14,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:28:14,190 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1232 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:14,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 296 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:28:14,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-04-02 06:28:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 340. [2023-04-02 06:28:14,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.361963190184049) internal successors, (444), 336 states have internal predecessors, (444), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:14,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 447 transitions. [2023-04-02 06:28:14,215 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 447 transitions. Word has length 65 [2023-04-02 06:28:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:14,216 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 447 transitions. [2023-04-02 06:28:14,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 447 transitions. [2023-04-02 06:28:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 06:28:14,218 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:14,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:14,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:28:14,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:14,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1399201326, now seen corresponding path program 1 times [2023-04-02 06:28:14,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:14,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609732485] [2023-04-02 06:28:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:14,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:14,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:14,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609732485] [2023-04-02 06:28:14,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609732485] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:14,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:14,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:28:14,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500519511] [2023-04-02 06:28:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:14,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:28:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:28:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:28:14,803 INFO L87 Difference]: Start difference. First operand 340 states and 447 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:15,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:15,921 INFO L93 Difference]: Finished difference Result 686 states and 904 transitions. [2023-04-02 06:28:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:28:15,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-04-02 06:28:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:15,924 INFO L225 Difference]: With dead ends: 686 [2023-04-02 06:28:15,924 INFO L226 Difference]: Without dead ends: 503 [2023-04-02 06:28:15,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:28:15,926 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1906 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:15,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 452 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:28:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-04-02 06:28:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 340. [2023-04-02 06:28:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.3588957055214723) internal successors, (443), 336 states have internal predecessors, (443), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 446 transitions. [2023-04-02 06:28:15,976 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 446 transitions. Word has length 66 [2023-04-02 06:28:15,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:15,976 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 446 transitions. [2023-04-02 06:28:15,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 446 transitions. [2023-04-02 06:28:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 06:28:15,977 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:15,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:15,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:28:15,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:15,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:15,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1740017124, now seen corresponding path program 1 times [2023-04-02 06:28:15,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:15,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433585036] [2023-04-02 06:28:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:15,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:16,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:16,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433585036] [2023-04-02 06:28:16,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433585036] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:16,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:16,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:16,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818824487] [2023-04-02 06:28:16,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:16,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:16,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:16,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:16,502 INFO L87 Difference]: Start difference. First operand 340 states and 446 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:17,808 INFO L93 Difference]: Finished difference Result 746 states and 1011 transitions. [2023-04-02 06:28:17,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:28:17,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-04-02 06:28:17,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:17,811 INFO L225 Difference]: With dead ends: 746 [2023-04-02 06:28:17,811 INFO L226 Difference]: Without dead ends: 741 [2023-04-02 06:28:17,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:28:17,813 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1434 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:17,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 893 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:28:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-04-02 06:28:17,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 340. [2023-04-02 06:28:17,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.3558282208588956) internal successors, (442), 336 states have internal predecessors, (442), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 445 transitions. [2023-04-02 06:28:17,862 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 445 transitions. Word has length 66 [2023-04-02 06:28:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:17,863 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 445 transitions. [2023-04-02 06:28:17,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 445 transitions. [2023-04-02 06:28:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 06:28:17,864 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:17,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:28:17,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:17,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1296061004, now seen corresponding path program 1 times [2023-04-02 06:28:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:17,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687634756] [2023-04-02 06:28:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:18,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:18,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:18,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687634756] [2023-04-02 06:28:18,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687634756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:18,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:18,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970502835] [2023-04-02 06:28:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:18,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:18,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:18,419 INFO L87 Difference]: Start difference. First operand 340 states and 445 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:19,701 INFO L93 Difference]: Finished difference Result 642 states and 879 transitions. [2023-04-02 06:28:19,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:28:19,705 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-04-02 06:28:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:19,707 INFO L225 Difference]: With dead ends: 642 [2023-04-02 06:28:19,707 INFO L226 Difference]: Without dead ends: 504 [2023-04-02 06:28:19,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:28:19,710 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1603 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:19,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 781 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:28:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-04-02 06:28:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 340. [2023-04-02 06:28:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.352760736196319) internal successors, (441), 336 states have internal predecessors, (441), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 444 transitions. [2023-04-02 06:28:19,754 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 444 transitions. Word has length 66 [2023-04-02 06:28:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:19,755 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 444 transitions. [2023-04-02 06:28:19,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 444 transitions. [2023-04-02 06:28:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:28:19,757 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:19,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:19,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:28:19,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:19,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1770387464, now seen corresponding path program 1 times [2023-04-02 06:28:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:19,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104739772] [2023-04-02 06:28:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:19,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:20,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:20,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104739772] [2023-04-02 06:28:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104739772] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:20,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84970043] [2023-04-02 06:28:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:20,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:20,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:20,392 INFO L87 Difference]: Start difference. First operand 340 states and 444 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:21,874 INFO L93 Difference]: Finished difference Result 877 states and 1207 transitions. [2023-04-02 06:28:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:28:21,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:28:21,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:21,877 INFO L225 Difference]: With dead ends: 877 [2023-04-02 06:28:21,878 INFO L226 Difference]: Without dead ends: 761 [2023-04-02 06:28:21,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:28:21,879 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1873 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:21,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 953 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:28:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-04-02 06:28:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 340. [2023-04-02 06:28:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.3496932515337423) internal successors, (440), 336 states have internal predecessors, (440), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 443 transitions. [2023-04-02 06:28:21,925 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 443 transitions. Word has length 68 [2023-04-02 06:28:21,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:21,925 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 443 transitions. [2023-04-02 06:28:21,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 443 transitions. [2023-04-02 06:28:21,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:28:21,938 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:21,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:21,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:28:21,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:21,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1719197262, now seen corresponding path program 1 times [2023-04-02 06:28:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:21,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528324163] [2023-04-02 06:28:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528324163] [2023-04-02 06:28:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528324163] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:22,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:22,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:22,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822651736] [2023-04-02 06:28:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:22,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:22,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:22,472 INFO L87 Difference]: Start difference. First operand 340 states and 443 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:23,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:23,828 INFO L93 Difference]: Finished difference Result 847 states and 1159 transitions. [2023-04-02 06:28:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:28:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:28:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:23,832 INFO L225 Difference]: With dead ends: 847 [2023-04-02 06:28:23,832 INFO L226 Difference]: Without dead ends: 741 [2023-04-02 06:28:23,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:28:23,833 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 980 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:23,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 913 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:28:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-04-02 06:28:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 340. [2023-04-02 06:28:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.3466257668711656) internal successors, (439), 336 states have internal predecessors, (439), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 442 transitions. [2023-04-02 06:28:23,896 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 442 transitions. Word has length 68 [2023-04-02 06:28:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:23,896 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 442 transitions. [2023-04-02 06:28:23,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:23,897 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 442 transitions. [2023-04-02 06:28:23,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:28:23,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:23,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:28:23,898 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:23,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1830933026, now seen corresponding path program 1 times [2023-04-02 06:28:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433390602] [2023-04-02 06:28:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:24,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433390602] [2023-04-02 06:28:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433390602] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:24,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:24,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941350179] [2023-04-02 06:28:24,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:24,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:24,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:24,374 INFO L87 Difference]: Start difference. First operand 340 states and 442 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:25,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:25,682 INFO L93 Difference]: Finished difference Result 850 states and 1161 transitions. [2023-04-02 06:28:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:28:25,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:28:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:25,686 INFO L225 Difference]: With dead ends: 850 [2023-04-02 06:28:25,686 INFO L226 Difference]: Without dead ends: 741 [2023-04-02 06:28:25,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:28:25,687 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1384 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:25,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 945 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:28:25,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-04-02 06:28:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 340. [2023-04-02 06:28:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.343558282208589) internal successors, (438), 336 states have internal predecessors, (438), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 441 transitions. [2023-04-02 06:28:25,738 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 441 transitions. Word has length 68 [2023-04-02 06:28:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:25,738 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 441 transitions. [2023-04-02 06:28:25,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 441 transitions. [2023-04-02 06:28:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:28:25,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:25,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:25,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:28:25,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr8ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:25,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash 98223486, now seen corresponding path program 1 times [2023-04-02 06:28:25,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:25,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936318903] [2023-04-02 06:28:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:25,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:26,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:26,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:26,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936318903] [2023-04-02 06:28:26,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936318903] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:26,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:26,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:26,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708600994] [2023-04-02 06:28:26,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:26,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:26,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:26,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:26,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:26,213 INFO L87 Difference]: Start difference. First operand 340 states and 441 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:27,705 INFO L93 Difference]: Finished difference Result 882 states and 1209 transitions. [2023-04-02 06:28:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:28:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:28:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:27,708 INFO L225 Difference]: With dead ends: 882 [2023-04-02 06:28:27,708 INFO L226 Difference]: Without dead ends: 761 [2023-04-02 06:28:27,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:28:27,709 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1337 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:27,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 1100 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:28:27,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-04-02 06:28:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 340. [2023-04-02 06:28:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.3404907975460123) internal successors, (437), 336 states have internal predecessors, (437), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 440 transitions. [2023-04-02 06:28:27,762 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 440 transitions. Word has length 68 [2023-04-02 06:28:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:27,762 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 440 transitions. [2023-04-02 06:28:27,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 440 transitions. [2023-04-02 06:28:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:28:27,763 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:27,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:27,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:28:27,764 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:27,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash -809912249, now seen corresponding path program 1 times [2023-04-02 06:28:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355440075] [2023-04-02 06:28:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:27,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:28,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:28,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:28,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355440075] [2023-04-02 06:28:28,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355440075] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:28,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:28,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:28,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929034842] [2023-04-02 06:28:28,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:28,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:28,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:28,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:28,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:28,241 INFO L87 Difference]: Start difference. First operand 340 states and 440 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:29,617 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2023-04-02 06:28:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:28:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:28:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:29,620 INFO L225 Difference]: With dead ends: 746 [2023-04-02 06:28:29,620 INFO L226 Difference]: Without dead ends: 741 [2023-04-02 06:28:29,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:28:29,621 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 933 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:29,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 997 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:28:29,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-04-02 06:28:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 340. [2023-04-02 06:28:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.334355828220859) internal successors, (435), 336 states have internal predecessors, (435), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 438 transitions. [2023-04-02 06:28:29,680 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 438 transitions. Word has length 68 [2023-04-02 06:28:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:29,680 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 438 transitions. [2023-04-02 06:28:29,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 438 transitions. [2023-04-02 06:28:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:28:29,681 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:29,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:29,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:28:29,682 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:29,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:29,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1194960410, now seen corresponding path program 1 times [2023-04-02 06:28:29,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:29,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720100545] [2023-04-02 06:28:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:29,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:30,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:30,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720100545] [2023-04-02 06:28:30,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720100545] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:30,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:30,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:30,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431664979] [2023-04-02 06:28:30,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:30,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:30,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:30,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:30,175 INFO L87 Difference]: Start difference. First operand 340 states and 438 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:31,672 INFO L93 Difference]: Finished difference Result 778 states and 1050 transitions. [2023-04-02 06:28:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:28:31,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:28:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:31,675 INFO L225 Difference]: With dead ends: 778 [2023-04-02 06:28:31,675 INFO L226 Difference]: Without dead ends: 761 [2023-04-02 06:28:31,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:28:31,676 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1784 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:31,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1784 Valid, 1030 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:28:31,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-04-02 06:28:31,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 340. [2023-04-02 06:28:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.3282208588957056) internal successors, (433), 336 states have internal predecessors, (433), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 436 transitions. [2023-04-02 06:28:31,736 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 436 transitions. Word has length 68 [2023-04-02 06:28:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:31,736 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 436 transitions. [2023-04-02 06:28:31,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 436 transitions. [2023-04-02 06:28:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:28:31,737 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:31,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:31,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:28:31,738 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:31,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1087205780, now seen corresponding path program 1 times [2023-04-02 06:28:31,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:31,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638323637] [2023-04-02 06:28:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:31,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:32,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:32,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638323637] [2023-04-02 06:28:32,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638323637] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:32,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:32,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:28:32,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221923098] [2023-04-02 06:28:32,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:32,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:28:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:28:32,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:28:32,506 INFO L87 Difference]: Start difference. First operand 340 states and 436 transitions. Second operand has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:34,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:34,566 INFO L93 Difference]: Finished difference Result 807 states and 1104 transitions. [2023-04-02 06:28:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 06:28:34,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-02 06:28:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:34,569 INFO L225 Difference]: With dead ends: 807 [2023-04-02 06:28:34,569 INFO L226 Difference]: Without dead ends: 639 [2023-04-02 06:28:34,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-04-02 06:28:34,570 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1922 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:34,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 1427 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:28:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-04-02 06:28:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 340. [2023-04-02 06:28:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 326 states have (on average 1.322085889570552) internal successors, (431), 336 states have internal predecessors, (431), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 434 transitions. [2023-04-02 06:28:34,628 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 434 transitions. Word has length 68 [2023-04-02 06:28:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:34,628 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 434 transitions. [2023-04-02 06:28:34,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:34,628 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 434 transitions. [2023-04-02 06:28:34,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:28:34,629 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:34,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:34,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:28:34,630 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:34,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1998700100, now seen corresponding path program 1 times [2023-04-02 06:28:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097081918] [2023-04-02 06:28:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:34,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097081918] [2023-04-02 06:28:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097081918] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:35,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:35,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:28:35,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412634491] [2023-04-02 06:28:35,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:35,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:28:35,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:35,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:28:35,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:28:35,476 INFO L87 Difference]: Start difference. First operand 340 states and 434 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:37,627 INFO L93 Difference]: Finished difference Result 1078 states and 1496 transitions. [2023-04-02 06:28:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:28:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-02 06:28:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:37,630 INFO L225 Difference]: With dead ends: 1078 [2023-04-02 06:28:37,630 INFO L226 Difference]: Without dead ends: 967 [2023-04-02 06:28:37,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:28:37,631 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 2080 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:37,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 2749 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:28:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-04-02 06:28:37,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 333. [2023-04-02 06:28:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 319 states have (on average 1.3197492163009403) internal successors, (421), 329 states have internal predecessors, (421), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 424 transitions. [2023-04-02 06:28:37,712 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 424 transitions. Word has length 70 [2023-04-02 06:28:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:37,712 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 424 transitions. [2023-04-02 06:28:37,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 424 transitions. [2023-04-02 06:28:37,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:28:37,713 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:37,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:28:37,713 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:37,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:37,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1642921653, now seen corresponding path program 1 times [2023-04-02 06:28:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10760435] [2023-04-02 06:28:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:38,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10760435] [2023-04-02 06:28:38,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10760435] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:38,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:38,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:28:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801461303] [2023-04-02 06:28:38,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:38,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:28:38,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:28:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:28:38,429 INFO L87 Difference]: Start difference. First operand 333 states and 424 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:40,289 INFO L93 Difference]: Finished difference Result 786 states and 1081 transitions. [2023-04-02 06:28:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:28:40,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-02 06:28:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:40,291 INFO L225 Difference]: With dead ends: 786 [2023-04-02 06:28:40,291 INFO L226 Difference]: Without dead ends: 665 [2023-04-02 06:28:40,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:28:40,293 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1392 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:40,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 2285 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:28:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-04-02 06:28:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 316. [2023-04-02 06:28:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 303 states have (on average 1.3234323432343233) internal successors, (401), 312 states have internal predecessors, (401), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 404 transitions. [2023-04-02 06:28:40,384 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 404 transitions. Word has length 70 [2023-04-02 06:28:40,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:40,384 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 404 transitions. [2023-04-02 06:28:40,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 404 transitions. [2023-04-02 06:28:40,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:28:40,385 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:40,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:28:40,386 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:40,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash 434399906, now seen corresponding path program 1 times [2023-04-02 06:28:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10498984] [2023-04-02 06:28:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:41,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:41,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10498984] [2023-04-02 06:28:41,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10498984] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:41,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:41,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:28:41,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288072709] [2023-04-02 06:28:41,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:41,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:28:41,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:41,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:28:41,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:28:41,023 INFO L87 Difference]: Start difference. First operand 316 states and 404 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:42,858 INFO L93 Difference]: Finished difference Result 830 states and 1109 transitions. [2023-04-02 06:28:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:28:42,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-02 06:28:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:42,860 INFO L225 Difference]: With dead ends: 830 [2023-04-02 06:28:42,860 INFO L226 Difference]: Without dead ends: 687 [2023-04-02 06:28:42,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:28:42,861 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1455 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:42,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1291 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:28:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-04-02 06:28:42,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 277. [2023-04-02 06:28:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 267 states have (on average 1.3258426966292134) internal successors, (354), 273 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 357 transitions. [2023-04-02 06:28:42,946 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 357 transitions. Word has length 70 [2023-04-02 06:28:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:42,946 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 357 transitions. [2023-04-02 06:28:42,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 357 transitions. [2023-04-02 06:28:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:28:42,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:42,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:42,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:28:42,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:42,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1569202963, now seen corresponding path program 1 times [2023-04-02 06:28:42,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:42,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826936791] [2023-04-02 06:28:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:42,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:44,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:44,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826936791] [2023-04-02 06:28:44,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826936791] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:44,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:44,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-04-02 06:28:44,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427430494] [2023-04-02 06:28:44,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-02 06:28:44,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-02 06:28:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:28:44,415 INFO L87 Difference]: Start difference. First operand 277 states and 357 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:47,087 INFO L93 Difference]: Finished difference Result 417 states and 551 transitions. [2023-04-02 06:28:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 06:28:47,088 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-02 06:28:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:47,089 INFO L225 Difference]: With dead ends: 417 [2023-04-02 06:28:47,089 INFO L226 Difference]: Without dead ends: 309 [2023-04-02 06:28:47,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=353, Invalid=1809, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 06:28:47,090 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 463 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:47,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 2428 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:28:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-04-02 06:28:47,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 287. [2023-04-02 06:28:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 277 states have (on average 1.332129963898917) internal successors, (369), 283 states have internal predecessors, (369), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 372 transitions. [2023-04-02 06:28:47,166 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 372 transitions. Word has length 70 [2023-04-02 06:28:47,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:47,166 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 372 transitions. [2023-04-02 06:28:47,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 372 transitions. [2023-04-02 06:28:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:28:47,167 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:47,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:47,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:28:47,167 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:47,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1935468157, now seen corresponding path program 1 times [2023-04-02 06:28:47,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:47,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589750534] [2023-04-02 06:28:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:47,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:47,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:47,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:47,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589750534] [2023-04-02 06:28:47,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589750534] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:47,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:47,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:28:47,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497951777] [2023-04-02 06:28:47,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:47,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:28:47,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:47,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:28:47,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:28:47,877 INFO L87 Difference]: Start difference. First operand 287 states and 372 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:49,226 INFO L93 Difference]: Finished difference Result 549 states and 744 transitions. [2023-04-02 06:28:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:28:49,226 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-04-02 06:28:49,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:49,227 INFO L225 Difference]: With dead ends: 549 [2023-04-02 06:28:49,227 INFO L226 Difference]: Without dead ends: 403 [2023-04-02 06:28:49,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:28:49,228 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 685 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:49,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1646 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:28:49,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-04-02 06:28:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 245. [2023-04-02 06:28:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 238 states have (on average 1.3319327731092436) internal successors, (317), 241 states have internal predecessors, (317), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 320 transitions. [2023-04-02 06:28:49,323 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 320 transitions. Word has length 70 [2023-04-02 06:28:49,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:49,323 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 320 transitions. [2023-04-02 06:28:49,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:49,324 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 320 transitions. [2023-04-02 06:28:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:28:49,324 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:49,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:49,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:28:49,325 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:49,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:49,325 INFO L85 PathProgramCache]: Analyzing trace with hash -882103041, now seen corresponding path program 1 times [2023-04-02 06:28:49,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:49,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342573121] [2023-04-02 06:28:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:49,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:49,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:49,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342573121] [2023-04-02 06:28:49,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342573121] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:49,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:49,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:28:49,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124219026] [2023-04-02 06:28:49,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:49,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:28:49,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:49,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:28:49,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:28:49,998 INFO L87 Difference]: Start difference. First operand 245 states and 320 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:51,332 INFO L93 Difference]: Finished difference Result 493 states and 672 transitions. [2023-04-02 06:28:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:28:51,333 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:28:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:51,334 INFO L225 Difference]: With dead ends: 493 [2023-04-02 06:28:51,334 INFO L226 Difference]: Without dead ends: 383 [2023-04-02 06:28:51,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:28:51,335 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 872 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:51,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 851 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:28:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-04-02 06:28:51,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 225. [2023-04-02 06:28:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 219 states have (on average 1.3105022831050228) internal successors, (287), 221 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 290 transitions. [2023-04-02 06:28:51,437 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 290 transitions. Word has length 71 [2023-04-02 06:28:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:51,437 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 290 transitions. [2023-04-02 06:28:51,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 290 transitions. [2023-04-02 06:28:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:28:51,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:51,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:51,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:28:51,439 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:51,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1840184204, now seen corresponding path program 1 times [2023-04-02 06:28:51,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:51,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747140121] [2023-04-02 06:28:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:51,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747140121] [2023-04-02 06:28:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747140121] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:51,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545985511] [2023-04-02 06:28:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:51,910 INFO L87 Difference]: Start difference. First operand 225 states and 290 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:52,794 INFO L93 Difference]: Finished difference Result 372 states and 491 transitions. [2023-04-02 06:28:52,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:28:52,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:28:52,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:52,795 INFO L225 Difference]: With dead ends: 372 [2023-04-02 06:28:52,795 INFO L226 Difference]: Without dead ends: 365 [2023-04-02 06:28:52,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:28:52,797 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 1017 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:52,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 438 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:28:52,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-04-02 06:28:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 225. [2023-04-02 06:28:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 219 states have (on average 1.3059360730593608) internal successors, (286), 221 states have internal predecessors, (286), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 289 transitions. [2023-04-02 06:28:52,882 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 289 transitions. Word has length 71 [2023-04-02 06:28:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:52,882 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 289 transitions. [2023-04-02 06:28:52,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 289 transitions. [2023-04-02 06:28:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:28:52,883 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:52,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:52,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:28:52,883 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:52,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1571731529, now seen corresponding path program 1 times [2023-04-02 06:28:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:52,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502619364] [2023-04-02 06:28:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:53,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:53,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:53,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502619364] [2023-04-02 06:28:53,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502619364] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:53,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:53,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:28:53,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182687633] [2023-04-02 06:28:53,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:53,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:28:53,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:53,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:28:53,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:28:53,497 INFO L87 Difference]: Start difference. First operand 225 states and 289 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:56,607 INFO L93 Difference]: Finished difference Result 1477 states and 2090 transitions. [2023-04-02 06:28:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 06:28:56,609 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-02 06:28:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:56,612 INFO L225 Difference]: With dead ends: 1477 [2023-04-02 06:28:56,612 INFO L226 Difference]: Without dead ends: 1343 [2023-04-02 06:28:56,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:28:56,614 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 2042 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:56,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 1411 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 06:28:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2023-04-02 06:28:56,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 233. [2023-04-02 06:28:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 227 states have (on average 1.2951541850220265) internal successors, (294), 229 states have internal predecessors, (294), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 297 transitions. [2023-04-02 06:28:56,726 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 297 transitions. Word has length 71 [2023-04-02 06:28:56,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:56,727 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 297 transitions. [2023-04-02 06:28:56,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 297 transitions. [2023-04-02 06:28:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:28:56,728 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:56,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:56,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:28:56,728 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:56,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash -330810011, now seen corresponding path program 1 times [2023-04-02 06:28:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162530648] [2023-04-02 06:28:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:57,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162530648] [2023-04-02 06:28:57,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162530648] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:57,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:57,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:28:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051941843] [2023-04-02 06:28:57,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:57,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:28:57,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:28:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:28:57,159 INFO L87 Difference]: Start difference. First operand 233 states and 297 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:28:58,219 INFO L93 Difference]: Finished difference Result 523 states and 701 transitions. [2023-04-02 06:28:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:28:58,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-04-02 06:28:58,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:28:58,221 INFO L225 Difference]: With dead ends: 523 [2023-04-02 06:28:58,221 INFO L226 Difference]: Without dead ends: 389 [2023-04-02 06:28:58,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:28:58,222 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 795 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:28:58,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 580 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:28:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-04-02 06:28:58,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 225. [2023-04-02 06:28:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 219 states have (on average 1.2968036529680365) internal successors, (284), 221 states have internal predecessors, (284), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:58,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 287 transitions. [2023-04-02 06:28:58,308 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 287 transitions. Word has length 72 [2023-04-02 06:28:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:28:58,308 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 287 transitions. [2023-04-02 06:28:58,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:28:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 287 transitions. [2023-04-02 06:28:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:28:58,309 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:28:58,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:28:58,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:28:58,309 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:28:58,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:28:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1697673669, now seen corresponding path program 1 times [2023-04-02 06:28:58,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:28:58,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307096955] [2023-04-02 06:28:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:28:58,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:28:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:59,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:28:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:28:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:28:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:28:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307096955] [2023-04-02 06:28:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307096955] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:28:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:28:59,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-02 06:28:59,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321993007] [2023-04-02 06:28:59,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:28:59,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 06:28:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:28:59,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 06:28:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:28:59,588 INFO L87 Difference]: Start difference. First operand 225 states and 287 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:02,143 INFO L93 Difference]: Finished difference Result 469 states and 635 transitions. [2023-04-02 06:29:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-02 06:29:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-02 06:29:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:02,145 INFO L225 Difference]: With dead ends: 469 [2023-04-02 06:29:02,145 INFO L226 Difference]: Without dead ends: 463 [2023-04-02 06:29:02,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=327, Invalid=1565, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 06:29:02,145 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 633 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:02,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 2669 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:29:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-04-02 06:29:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 236. [2023-04-02 06:29:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 230 states have (on average 1.2956521739130435) internal successors, (298), 232 states have internal predecessors, (298), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 301 transitions. [2023-04-02 06:29:02,261 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 301 transitions. Word has length 73 [2023-04-02 06:29:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:02,262 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 301 transitions. [2023-04-02 06:29:02,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 301 transitions. [2023-04-02 06:29:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:29:02,262 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:02,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:02,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:29:02,263 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:02,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash 569777443, now seen corresponding path program 1 times [2023-04-02 06:29:02,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:02,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672263090] [2023-04-02 06:29:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:02,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:03,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:03,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672263090] [2023-04-02 06:29:03,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672263090] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:03,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:03,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-02 06:29:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602571183] [2023-04-02 06:29:03,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:03,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 06:29:03,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 06:29:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:29:03,625 INFO L87 Difference]: Start difference. First operand 236 states and 301 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:05,878 INFO L93 Difference]: Finished difference Result 260 states and 325 transitions. [2023-04-02 06:29:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-04-02 06:29:05,878 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2023-04-02 06:29:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:05,879 INFO L225 Difference]: With dead ends: 260 [2023-04-02 06:29:05,879 INFO L226 Difference]: Without dead ends: 252 [2023-04-02 06:29:05,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=344, Invalid=1636, Unknown=0, NotChecked=0, Total=1980 [2023-04-02 06:29:05,880 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 435 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:05,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1763 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:29:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-04-02 06:29:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 240. [2023-04-02 06:29:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 234 states have (on average 1.294871794871795) internal successors, (303), 236 states have internal predecessors, (303), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 306 transitions. [2023-04-02 06:29:05,975 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 306 transitions. Word has length 73 [2023-04-02 06:29:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:05,975 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 306 transitions. [2023-04-02 06:29:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 306 transitions. [2023-04-02 06:29:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:29:05,976 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:05,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:05,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:29:05,976 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:05,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1277317235, now seen corresponding path program 1 times [2023-04-02 06:29:05,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:05,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192686801] [2023-04-02 06:29:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:05,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:06,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:06,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192686801] [2023-04-02 06:29:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192686801] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:06,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:06,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 06:29:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496041229] [2023-04-02 06:29:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:06,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 06:29:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 06:29:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:29:06,964 INFO L87 Difference]: Start difference. First operand 240 states and 306 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:10,612 INFO L93 Difference]: Finished difference Result 1158 states and 1627 transitions. [2023-04-02 06:29:10,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:29:10,612 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-02 06:29:10,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:10,615 INFO L225 Difference]: With dead ends: 1158 [2023-04-02 06:29:10,615 INFO L226 Difference]: Without dead ends: 1152 [2023-04-02 06:29:10,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 06:29:10,616 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1442 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 3778 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:10,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 3778 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:29:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-04-02 06:29:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 240. [2023-04-02 06:29:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 236 states have internal predecessors, (302), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 305 transitions. [2023-04-02 06:29:10,722 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 305 transitions. Word has length 74 [2023-04-02 06:29:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:10,722 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 305 transitions. [2023-04-02 06:29:10,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 305 transitions. [2023-04-02 06:29:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:29:10,723 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:10,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:10,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:29:10,723 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:10,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash 149421009, now seen corresponding path program 1 times [2023-04-02 06:29:10,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:10,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729352184] [2023-04-02 06:29:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:10,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:11,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729352184] [2023-04-02 06:29:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729352184] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:11,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:11,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:29:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771651457] [2023-04-02 06:29:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:29:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:29:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:29:11,340 INFO L87 Difference]: Start difference. First operand 240 states and 305 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:13,305 INFO L93 Difference]: Finished difference Result 642 states and 869 transitions. [2023-04-02 06:29:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:29:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-02 06:29:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:13,307 INFO L225 Difference]: With dead ends: 642 [2023-04-02 06:29:13,308 INFO L226 Difference]: Without dead ends: 627 [2023-04-02 06:29:13,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:29:13,308 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 815 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:13,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1958 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:29:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2023-04-02 06:29:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 224. [2023-04-02 06:29:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.2922374429223744) internal successors, (283), 220 states have internal predecessors, (283), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 286 transitions. [2023-04-02 06:29:13,427 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 286 transitions. Word has length 74 [2023-04-02 06:29:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:13,427 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 286 transitions. [2023-04-02 06:29:13,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 286 transitions. [2023-04-02 06:29:13,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:29:13,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:13,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:13,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:29:13,428 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:13,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:13,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1467218972, now seen corresponding path program 1 times [2023-04-02 06:29:13,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:13,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680066890] [2023-04-02 06:29:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:13,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:14,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680066890] [2023-04-02 06:29:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680066890] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:14,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:14,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-04-02 06:29:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031891655] [2023-04-02 06:29:14,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:14,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 06:29:14,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 06:29:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:29:14,276 INFO L87 Difference]: Start difference. First operand 224 states and 286 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:17,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:17,218 INFO L93 Difference]: Finished difference Result 1121 states and 1588 transitions. [2023-04-02 06:29:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 06:29:17,219 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-02 06:29:17,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:17,222 INFO L225 Difference]: With dead ends: 1121 [2023-04-02 06:29:17,222 INFO L226 Difference]: Without dead ends: 1115 [2023-04-02 06:29:17,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:29:17,222 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1807 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:17,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 2558 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:29:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-04-02 06:29:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 207. [2023-04-02 06:29:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 203 states have (on average 1.2955665024630543) internal successors, (263), 203 states have internal predecessors, (263), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 266 transitions. [2023-04-02 06:29:17,333 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 266 transitions. Word has length 74 [2023-04-02 06:29:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:17,333 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 266 transitions. [2023-04-02 06:29:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 266 transitions. [2023-04-02 06:29:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:29:17,334 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:17,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:17,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:29:17,335 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:17,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1715955800, now seen corresponding path program 1 times [2023-04-02 06:29:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:17,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557487230] [2023-04-02 06:29:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:17,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:17,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:17,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557487230] [2023-04-02 06:29:17,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557487230] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:17,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:17,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:29:17,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645701338] [2023-04-02 06:29:17,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:17,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:29:17,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:17,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:29:17,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:29:17,615 INFO L87 Difference]: Start difference. First operand 207 states and 266 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:18,787 INFO L93 Difference]: Finished difference Result 1039 states and 1498 transitions. [2023-04-02 06:29:18,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:29:18,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-02 06:29:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:18,790 INFO L225 Difference]: With dead ends: 1039 [2023-04-02 06:29:18,790 INFO L226 Difference]: Without dead ends: 935 [2023-04-02 06:29:18,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:29:18,791 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 885 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:18,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 957 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:29:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2023-04-02 06:29:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 309. [2023-04-02 06:29:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 305 states have (on average 1.3573770491803279) internal successors, (414), 305 states have internal predecessors, (414), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 417 transitions. [2023-04-02 06:29:19,076 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 417 transitions. Word has length 96 [2023-04-02 06:29:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:19,077 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 417 transitions. [2023-04-02 06:29:19,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 417 transitions. [2023-04-02 06:29:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:29:19,078 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:19,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:19,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:29:19,078 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:19,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1336514200, now seen corresponding path program 1 times [2023-04-02 06:29:19,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:19,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927096709] [2023-04-02 06:29:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:19,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:19,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:19,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927096709] [2023-04-02 06:29:19,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927096709] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:19,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:19,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:29:19,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605677651] [2023-04-02 06:29:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:19,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:29:19,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:19,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:29:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:29:19,423 INFO L87 Difference]: Start difference. First operand 309 states and 417 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:20,849 INFO L93 Difference]: Finished difference Result 1237 states and 1789 transitions. [2023-04-02 06:29:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:29:20,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-02 06:29:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:20,852 INFO L225 Difference]: With dead ends: 1237 [2023-04-02 06:29:20,852 INFO L226 Difference]: Without dead ends: 1031 [2023-04-02 06:29:20,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:29:20,853 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 636 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:20,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 681 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:29:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-04-02 06:29:21,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 411. [2023-04-02 06:29:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 407 states have (on average 1.3882063882063882) internal successors, (565), 407 states have internal predecessors, (565), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 568 transitions. [2023-04-02 06:29:21,143 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 568 transitions. Word has length 98 [2023-04-02 06:29:21,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:21,143 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 568 transitions. [2023-04-02 06:29:21,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 568 transitions. [2023-04-02 06:29:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:29:21,144 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:21,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:21,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:29:21,144 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:21,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash 658138987, now seen corresponding path program 1 times [2023-04-02 06:29:21,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:21,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234413483] [2023-04-02 06:29:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234413483] [2023-04-02 06:29:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234413483] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:21,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:21,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:29:21,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426015124] [2023-04-02 06:29:21,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:29:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:29:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:29:21,525 INFO L87 Difference]: Start difference. First operand 411 states and 568 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:22,384 INFO L93 Difference]: Finished difference Result 823 states and 1176 transitions. [2023-04-02 06:29:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:29:22,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-02 06:29:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:22,385 INFO L225 Difference]: With dead ends: 823 [2023-04-02 06:29:22,386 INFO L226 Difference]: Without dead ends: 515 [2023-04-02 06:29:22,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:29:22,386 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 203 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:22,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 382 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:29:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-04-02 06:29:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 513. [2023-04-02 06:29:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 509 states have (on average 1.3988212180746562) internal successors, (712), 509 states have internal predecessors, (712), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 715 transitions. [2023-04-02 06:29:22,760 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 715 transitions. Word has length 98 [2023-04-02 06:29:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:22,761 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 715 transitions. [2023-04-02 06:29:22,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 715 transitions. [2023-04-02 06:29:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:29:22,762 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:22,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:22,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:29:22,762 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:22,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash -52048662, now seen corresponding path program 1 times [2023-04-02 06:29:22,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:22,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589351669] [2023-04-02 06:29:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589351669] [2023-04-02 06:29:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589351669] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:22,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:22,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:29:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051350025] [2023-04-02 06:29:22,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:22,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:29:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:23,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:29:23,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:29:23,000 INFO L87 Difference]: Start difference. First operand 513 states and 715 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:24,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:24,163 INFO L93 Difference]: Finished difference Result 1223 states and 1756 transitions. [2023-04-02 06:29:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:29:24,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-02 06:29:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:24,166 INFO L225 Difference]: With dead ends: 1223 [2023-04-02 06:29:24,166 INFO L226 Difference]: Without dead ends: 813 [2023-04-02 06:29:24,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:29:24,168 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 93 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:24,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 252 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:29:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-04-02 06:29:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 805. [2023-04-02 06:29:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 801 states have (on average 1.4069912609238453) internal successors, (1127), 801 states have internal predecessors, (1127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1130 transitions. [2023-04-02 06:29:24,823 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1130 transitions. Word has length 98 [2023-04-02 06:29:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:24,823 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1130 transitions. [2023-04-02 06:29:24,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1130 transitions. [2023-04-02 06:29:24,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:29:24,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:24,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:24,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:29:24,825 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:24,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash -753400588, now seen corresponding path program 1 times [2023-04-02 06:29:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226495408] [2023-04-02 06:29:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:24,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:25,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226495408] [2023-04-02 06:29:25,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226495408] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:25,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:25,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:29:25,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389792726] [2023-04-02 06:29:25,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:25,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:29:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:25,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:29:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:29:25,126 INFO L87 Difference]: Start difference. First operand 805 states and 1130 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:27,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:27,377 INFO L93 Difference]: Finished difference Result 2405 states and 3451 transitions. [2023-04-02 06:29:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:29:27,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-02 06:29:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:27,382 INFO L225 Difference]: With dead ends: 2405 [2023-04-02 06:29:27,382 INFO L226 Difference]: Without dead ends: 2043 [2023-04-02 06:29:27,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:29:27,383 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 605 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:27,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 684 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:29:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2023-04-02 06:29:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1315. [2023-04-02 06:29:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1311 states have (on average 1.421815408085431) internal successors, (1864), 1311 states have internal predecessors, (1864), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1867 transitions. [2023-04-02 06:29:28,469 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1867 transitions. Word has length 98 [2023-04-02 06:29:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:28,469 INFO L495 AbstractCegarLoop]: Abstraction has 1315 states and 1867 transitions. [2023-04-02 06:29:28,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1867 transitions. [2023-04-02 06:29:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:29:28,471 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:28,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:28,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-02 06:29:28,471 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:28,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 237179758, now seen corresponding path program 1 times [2023-04-02 06:29:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:28,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152504234] [2023-04-02 06:29:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:28,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:28,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152504234] [2023-04-02 06:29:28,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152504234] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:28,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:28,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:29:28,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689920472] [2023-04-02 06:29:28,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:28,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:29:28,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:28,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:29:28,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:29:28,749 INFO L87 Difference]: Start difference. First operand 1315 states and 1867 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:31,337 INFO L93 Difference]: Finished difference Result 2745 states and 3943 transitions. [2023-04-02 06:29:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:29:31,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2023-04-02 06:29:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:31,343 INFO L225 Difference]: With dead ends: 2745 [2023-04-02 06:29:31,343 INFO L226 Difference]: Without dead ends: 2383 [2023-04-02 06:29:31,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:29:31,344 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 571 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:31,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 754 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:29:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2023-04-02 06:29:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 1655. [2023-04-02 06:29:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1651 states have (on average 1.4270139309509389) internal successors, (2356), 1651 states have internal predecessors, (2356), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2359 transitions. [2023-04-02 06:29:32,745 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2359 transitions. Word has length 98 [2023-04-02 06:29:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:32,745 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2359 transitions. [2023-04-02 06:29:32,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2359 transitions. [2023-04-02 06:29:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:29:32,746 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:32,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-02 06:29:32,747 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:32,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:32,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1131695430, now seen corresponding path program 1 times [2023-04-02 06:29:32,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:32,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913448927] [2023-04-02 06:29:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:32,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913448927] [2023-04-02 06:29:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913448927] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:33,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:29:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127994838] [2023-04-02 06:29:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:33,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:29:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:33,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:29:33,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:29:33,003 INFO L87 Difference]: Start difference. First operand 1655 states and 2359 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:36,039 INFO L93 Difference]: Finished difference Result 4615 states and 6601 transitions. [2023-04-02 06:29:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:29:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:29:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:36,049 INFO L225 Difference]: With dead ends: 4615 [2023-04-02 06:29:36,050 INFO L226 Difference]: Without dead ends: 3063 [2023-04-02 06:29:36,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:29:36,053 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 73 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:36,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 330 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:29:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2023-04-02 06:29:38,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2917. [2023-04-02 06:29:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2913 states have (on average 1.419155509783728) internal successors, (4134), 2913 states have internal predecessors, (4134), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4137 transitions. [2023-04-02 06:29:38,566 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4137 transitions. Word has length 99 [2023-04-02 06:29:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:38,566 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 4137 transitions. [2023-04-02 06:29:38,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4137 transitions. [2023-04-02 06:29:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:29:38,567 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:38,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:38,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-02 06:29:38,568 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:38,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:38,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1338787684, now seen corresponding path program 1 times [2023-04-02 06:29:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:38,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389228779] [2023-04-02 06:29:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:38,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:38,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389228779] [2023-04-02 06:29:38,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389228779] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:38,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:38,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:29:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055316944] [2023-04-02 06:29:38,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:29:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:29:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:29:38,831 INFO L87 Difference]: Start difference. First operand 2917 states and 4137 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:44,040 INFO L93 Difference]: Finished difference Result 8257 states and 11683 transitions. [2023-04-02 06:29:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:29:44,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:29:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:44,053 INFO L225 Difference]: With dead ends: 8257 [2023-04-02 06:29:44,054 INFO L226 Difference]: Without dead ends: 5443 [2023-04-02 06:29:44,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:29:44,059 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 66 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:44,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 330 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:29:44,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5443 states. [2023-04-02 06:29:48,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5443 to 5153. [2023-04-02 06:29:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5149 states have (on average 1.4026024470771024) internal successors, (7222), 5149 states have internal predecessors, (7222), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 7225 transitions. [2023-04-02 06:29:48,618 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 7225 transitions. Word has length 100 [2023-04-02 06:29:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:29:48,618 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 7225 transitions. [2023-04-02 06:29:48,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:48,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 7225 transitions. [2023-04-02 06:29:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 06:29:48,619 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:29:48,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:29:48,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-02 06:29:48,619 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:29:48,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:29:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1540448183, now seen corresponding path program 1 times [2023-04-02 06:29:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:29:48,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003510173] [2023-04-02 06:29:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:29:48,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:29:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:29:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:29:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:29:48,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:29:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003510173] [2023-04-02 06:29:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003510173] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:29:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:29:48,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:29:48,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477838668] [2023-04-02 06:29:48,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:29:48,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:29:48,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:29:48,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:29:48,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:29:48,887 INFO L87 Difference]: Start difference. First operand 5153 states and 7225 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:29:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:29:57,970 INFO L93 Difference]: Finished difference Result 14677 states and 20443 transitions. [2023-04-02 06:29:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:29:57,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2023-04-02 06:29:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:29:57,988 INFO L225 Difference]: With dead ends: 14677 [2023-04-02 06:29:57,988 INFO L226 Difference]: Without dead ends: 9627 [2023-04-02 06:29:57,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:29:57,998 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 56 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:29:57,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 330 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:29:58,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9627 states. [2023-04-02 06:30:06,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9627 to 9049. [2023-04-02 06:30:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9049 states, 9045 states have (on average 1.3777777777777778) internal successors, (12462), 9045 states have internal predecessors, (12462), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9049 states to 9049 states and 12465 transitions. [2023-04-02 06:30:06,234 INFO L78 Accepts]: Start accepts. Automaton has 9049 states and 12465 transitions. Word has length 101 [2023-04-02 06:30:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:06,235 INFO L495 AbstractCegarLoop]: Abstraction has 9049 states and 12465 transitions. [2023-04-02 06:30:06,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 9049 states and 12465 transitions. [2023-04-02 06:30:06,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:30:06,236 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:06,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:30:06,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-02 06:30:06,236 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:06,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:06,237 INFO L85 PathProgramCache]: Analyzing trace with hash 524593141, now seen corresponding path program 1 times [2023-04-02 06:30:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:06,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039699609] [2023-04-02 06:30:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:30:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039699609] [2023-04-02 06:30:06,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039699609] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:06,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:06,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:30:06,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871899802] [2023-04-02 06:30:06,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:06,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:30:06,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:06,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:30:06,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:30:06,649 INFO L87 Difference]: Start difference. First operand 9049 states and 12465 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:19,844 INFO L93 Difference]: Finished difference Result 13615 states and 18603 transitions. [2023-04-02 06:30:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:30:19,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-02 06:30:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:19,871 INFO L225 Difference]: With dead ends: 13615 [2023-04-02 06:30:19,871 INFO L226 Difference]: Without dead ends: 13613 [2023-04-02 06:30:19,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:19,875 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 252 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:19,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 841 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:30:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13613 states. [2023-04-02 06:30:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13613 to 9241. [2023-04-02 06:30:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9237 states have (on average 1.361264479809462) internal successors, (12574), 9237 states have internal predecessors, (12574), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 12577 transitions. [2023-04-02 06:30:28,576 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 12577 transitions. Word has length 102 [2023-04-02 06:30:28,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:28,576 INFO L495 AbstractCegarLoop]: Abstraction has 9241 states and 12577 transitions. [2023-04-02 06:30:28,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:28,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 12577 transitions. [2023-04-02 06:30:28,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:30:28,577 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:28,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:30:28,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-02 06:30:28,577 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:28,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:28,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2082038431, now seen corresponding path program 1 times [2023-04-02 06:30:28,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:28,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32678519] [2023-04-02 06:30:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:28,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:30:28,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:28,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32678519] [2023-04-02 06:30:28,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32678519] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:28,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:28,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:30:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543903660] [2023-04-02 06:30:28,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:28,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:30:28,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:28,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:30:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:30:28,916 INFO L87 Difference]: Start difference. First operand 9241 states and 12577 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:44,149 INFO L93 Difference]: Finished difference Result 17729 states and 24285 transitions. [2023-04-02 06:30:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:30:44,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-04-02 06:30:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:44,185 INFO L225 Difference]: With dead ends: 17729 [2023-04-02 06:30:44,185 INFO L226 Difference]: Without dead ends: 15567 [2023-04-02 06:30:44,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:30:44,193 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 627 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:44,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 742 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:30:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15567 states. [2023-04-02 06:30:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15567 to 11241. [2023-04-02 06:30:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11241 states, 11237 states have (on average 1.36103942333363) internal successors, (15294), 11237 states have internal predecessors, (15294), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11241 states to 11241 states and 15297 transitions. [2023-04-02 06:30:54,885 INFO L78 Accepts]: Start accepts. Automaton has 11241 states and 15297 transitions. Word has length 102 [2023-04-02 06:30:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:54,885 INFO L495 AbstractCegarLoop]: Abstraction has 11241 states and 15297 transitions. [2023-04-02 06:30:54,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:30:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 11241 states and 15297 transitions. [2023-04-02 06:30:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:30:54,886 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:54,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:30:54,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-02 06:30:54,887 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:54,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1040048868, now seen corresponding path program 1 times [2023-04-02 06:30:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:54,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183687573] [2023-04-02 06:30:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:54,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:55,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:30:55,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:55,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183687573] [2023-04-02 06:30:55,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183687573] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:55,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:55,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:30:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611963928] [2023-04-02 06:30:55,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:55,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:30:55,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:55,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:30:55,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:30:55,206 INFO L87 Difference]: Start difference. First operand 11241 states and 15297 transitions. Second operand has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:31:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:11,926 INFO L93 Difference]: Finished difference Result 27105 states and 36621 transitions. [2023-04-02 06:31:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:31:11,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-04-02 06:31:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:11,955 INFO L225 Difference]: With dead ends: 27105 [2023-04-02 06:31:11,955 INFO L226 Difference]: Without dead ends: 15967 [2023-04-02 06:31:11,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:31:11,972 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1009 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:11,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 295 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:31:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15967 states. [2023-04-02 06:31:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15967 to 11153. [2023-04-02 06:31:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11153 states, 11149 states have (on average 1.3481029688761323) internal successors, (15030), 11149 states have internal predecessors, (15030), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:31:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11153 states to 11153 states and 15033 transitions. [2023-04-02 06:31:22,935 INFO L78 Accepts]: Start accepts. Automaton has 11153 states and 15033 transitions. Word has length 104 [2023-04-02 06:31:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:22,935 INFO L495 AbstractCegarLoop]: Abstraction has 11153 states and 15033 transitions. [2023-04-02 06:31:22,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:31:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 11153 states and 15033 transitions. [2023-04-02 06:31:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 06:31:22,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:22,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:31:22,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-02 06:31:22,939 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:31:22,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1929123121, now seen corresponding path program 1 times [2023-04-02 06:31:22,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:22,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166147011] [2023-04-02 06:31:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:22,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:31:23,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:23,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166147011] [2023-04-02 06:31:23,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166147011] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:23,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:23,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:31:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579158119] [2023-04-02 06:31:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:23,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:31:23,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:31:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:31:23,243 INFO L87 Difference]: Start difference. First operand 11153 states and 15033 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:31:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:36,947 INFO L93 Difference]: Finished difference Result 24837 states and 33475 transitions. [2023-04-02 06:31:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:31:36,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2023-04-02 06:31:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:36,971 INFO L225 Difference]: With dead ends: 24837 [2023-04-02 06:31:36,971 INFO L226 Difference]: Without dead ends: 13787 [2023-04-02 06:31:36,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:31:36,988 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 66 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:36,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 300 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:31:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13787 states. [2023-04-02 06:31:49,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13787 to 12801. [2023-04-02 06:31:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12801 states, 12797 states have (on average 1.3289052121590998) internal successors, (17006), 12797 states have internal predecessors, (17006), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:31:49,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12801 states to 12801 states and 17009 transitions. [2023-04-02 06:31:49,803 INFO L78 Accepts]: Start accepts. Automaton has 12801 states and 17009 transitions. Word has length 129 [2023-04-02 06:31:49,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:49,804 INFO L495 AbstractCegarLoop]: Abstraction has 12801 states and 17009 transitions. [2023-04-02 06:31:49,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:31:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 12801 states and 17009 transitions. [2023-04-02 06:31:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 06:31:49,807 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:49,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:31:49,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-02 06:31:49,807 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:31:49,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:49,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1614609737, now seen corresponding path program 1 times [2023-04-02 06:31:49,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:49,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313596983] [2023-04-02 06:31:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:49,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 06:31:50,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:50,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313596983] [2023-04-02 06:31:50,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313596983] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:50,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:50,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:31:50,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126639512] [2023-04-02 06:31:50,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:50,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:31:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:31:50,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:31:50,067 INFO L87 Difference]: Start difference. First operand 12801 states and 17009 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)