/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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:30:08,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:30:08,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:30:08,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:30:08,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:30:08,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:30:08,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:30:08,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:30:08,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:30:08,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:30:08,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:30:08,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:30:08,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:30:08,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:30:08,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:30:08,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:30:08,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:30:08,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:30:08,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:30:08,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:30:08,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:30:08,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:30:08,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:30:08,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:30:08,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:30:08,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:30:08,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:30:08,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:30:08,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:30:08,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:30:08,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:30:08,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:30:08,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:30:08,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:30:08,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:30:08,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:30:08,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:30:08,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:30:08,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:30:08,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:30:08,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:30:08,325 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 06:30:08,343 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:30:08,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:30:08,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:30:08,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:30:08,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:30:08,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:30:08,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:30:08,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:30:08,345 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:30:08,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:30:08,346 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:30:08,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:30:08,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:30:08,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:30:08,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:30:08,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:30:08,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:30:08,347 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:30:08,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:30:08,347 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:30:08,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:30:08,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:30:08,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:30:08,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:30:08,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:30:08,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:30:08,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:30:08,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:30:08,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:30:08,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:30:08,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:30:08,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:30:08,349 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:30:08,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:30:08,349 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:30:08,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:30:08,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:30:08,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:30:08,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:30:08,604 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:30:08,605 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:30:08,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:30:09,762 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:30:10,070 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:30:10,071 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:30:10,085 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e0fadbe/9adb39123e6c42f6a62ae37749d200bc/FLAG903839f8f [2023-04-02 06:30:10,102 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e0fadbe/9adb39123e6c42f6a62ae37749d200bc [2023-04-02 06:30:10,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:30:10,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:30:10,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:30:10,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:30:10,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:30:10,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f07efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10, skipping insertion in model container [2023-04-02 06:30:10,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:30:10,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:30:10,402 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2023-04-02 06:30:10,426 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2023-04-02 06:30:10,433 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2023-04-02 06:30:10,437 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2023-04-02 06:30:10,459 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2023-04-02 06:30:10,464 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2023-04-02 06:30:10,470 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2023-04-02 06:30:10,480 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2023-04-02 06:30:10,484 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2023-04-02 06:30:10,488 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2023-04-02 06:30:10,494 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2023-04-02 06:30:10,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:30:10,570 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:30:10,629 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2023-04-02 06:30:10,656 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2023-04-02 06:30:10,660 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2023-04-02 06:30:10,666 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2023-04-02 06:30:10,670 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2023-04-02 06:30:10,672 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2023-04-02 06:30:10,675 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2023-04-02 06:30:10,681 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2023-04-02 06:30:10,684 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2023-04-02 06:30:10,701 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2023-04-02 06:30:10,706 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2023-04-02 06:30:10,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:30:10,781 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:30:10,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10 WrapperNode [2023-04-02 06:30:10,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:30:10,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:30:10,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:30:10,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:30:10,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:30:10,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:30:10,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:30:10,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:30:10,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (1/1) ... [2023-04-02 06:30:10,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:30:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:30:10,951 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 06:30:10,980 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 06:30:10,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:30:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:30:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:30:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:30:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:30:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:30:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:30:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:30:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:30:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:30:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:30:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:30:11,000 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:30:11,000 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:30:11,000 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:30:11,000 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:30:11,000 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:30:11,000 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:30:11,000 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:30:11,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:30:11,169 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:30:11,170 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:30:12,190 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:30:12,205 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:30:12,205 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:30:12,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:30:12 BoogieIcfgContainer [2023-04-02 06:30:12,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:30:12,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:30:12,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:30:12,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:30:12,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:30:10" (1/3) ... [2023-04-02 06:30:12,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f3fe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:30:12, skipping insertion in model container [2023-04-02 06:30:12,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:30:10" (2/3) ... [2023-04-02 06:30:12,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f3fe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:30:12, skipping insertion in model container [2023-04-02 06:30:12,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:30:12" (3/3) ... [2023-04-02 06:30:12,219 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-02 06:30:12,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:30:12,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-04-02 06:30:12,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:30:12,288 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;@1d171728, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:30:12,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-04-02 06:30:12,294 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 06:30:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 06:30:12,307 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:12,307 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 06:30:12,308 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 06:30:12,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash 406944274, now seen corresponding path program 1 times [2023-04-02 06:30:12,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:12,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851757013] [2023-04-02 06:30:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:12,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:13,248 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 06:30:13,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:13,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851757013] [2023-04-02 06:30:13,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851757013] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:13,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:13,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:30:13,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838268532] [2023-04-02 06:30:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:13,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:30:13,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:13,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:30:13,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:30:13,283 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 06:30:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:14,925 INFO L93 Difference]: Finished difference Result 579 states and 980 transitions. [2023-04-02 06:30:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:30:14,928 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 06:30:14,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:14,941 INFO L225 Difference]: With dead ends: 579 [2023-04-02 06:30:14,941 INFO L226 Difference]: Without dead ends: 299 [2023-04-02 06:30:14,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:30:14,947 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1453 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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 06:30:14,948 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 06:30:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-04-02 06:30:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-04-02 06:30:15,010 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 06:30:15,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 371 transitions. [2023-04-02 06:30:15,012 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 371 transitions. Word has length 62 [2023-04-02 06:30:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:15,013 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 371 transitions. [2023-04-02 06:30:15,013 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 06:30:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 371 transitions. [2023-04-02 06:30:15,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 06:30:15,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:15,022 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 06:30:15,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:30:15,023 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 06:30:15,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:15,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1330641949, now seen corresponding path program 1 times [2023-04-02 06:30:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:15,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207088169] [2023-04-02 06:30:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:15,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:15,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:15,565 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 06:30:15,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207088169] [2023-04-02 06:30:15,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207088169] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:15,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:15,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:30:15,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744411658] [2023-04-02 06:30:15,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:15,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:30:15,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:30:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:30:15,568 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 06:30:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:16,606 INFO L93 Difference]: Finished difference Result 501 states and 638 transitions. [2023-04-02 06:30:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:30:16,606 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 06:30:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:16,608 INFO L225 Difference]: With dead ends: 501 [2023-04-02 06:30:16,608 INFO L226 Difference]: Without dead ends: 273 [2023-04-02 06:30:16,610 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 06:30:16,611 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 06:30:16,611 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 06:30:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-04-02 06:30:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-04-02 06:30:16,634 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 06:30:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 340 transitions. [2023-04-02 06:30:16,635 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 340 transitions. Word has length 63 [2023-04-02 06:30:16,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:16,636 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 340 transitions. [2023-04-02 06:30:16,636 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 06:30:16,636 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 340 transitions. [2023-04-02 06:30:16,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-02 06:30:16,637 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:16,638 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 06:30:16,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:30:16,638 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 06:30:16,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:16,639 INFO L85 PathProgramCache]: Analyzing trace with hash -354873680, now seen corresponding path program 1 times [2023-04-02 06:30:16,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:16,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870678248] [2023-04-02 06:30:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:16,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:17,058 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 06:30:17,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:17,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870678248] [2023-04-02 06:30:17,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870678248] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:17,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:17,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:30:17,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138835854] [2023-04-02 06:30:17,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:17,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:30:17,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:17,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:30:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:30:17,063 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 06:30:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:17,983 INFO L93 Difference]: Finished difference Result 475 states and 606 transitions. [2023-04-02 06:30:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:30:17,984 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 06:30:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:17,985 INFO L225 Difference]: With dead ends: 475 [2023-04-02 06:30:17,985 INFO L226 Difference]: Without dead ends: 263 [2023-04-02 06:30:17,987 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 06:30:17,988 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 895 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 06:30:17,988 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 06:30:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-04-02 06:30:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-04-02 06:30:18,010 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 06:30:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 327 transitions. [2023-04-02 06:30:18,011 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 327 transitions. Word has length 64 [2023-04-02 06:30:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:18,011 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 327 transitions. [2023-04-02 06:30:18,012 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 06:30:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 327 transitions. [2023-04-02 06:30:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-02 06:30:18,013 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:18,013 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 06:30:18,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:30:18,014 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 06:30:18,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1525784987, now seen corresponding path program 1 times [2023-04-02 06:30:18,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:18,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406980903] [2023-04-02 06:30:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:18,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:18,382 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 06:30:18,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:18,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406980903] [2023-04-02 06:30:18,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406980903] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:18,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:18,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:30:18,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347814020] [2023-04-02 06:30:18,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:18,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:30:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:30:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:30:18,389 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 06:30:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:19,280 INFO L93 Difference]: Finished difference Result 465 states and 592 transitions. [2023-04-02 06:30:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:30:19,280 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 06:30:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:19,282 INFO L225 Difference]: With dead ends: 465 [2023-04-02 06:30:19,282 INFO L226 Difference]: Without dead ends: 249 [2023-04-02 06:30:19,282 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 06:30:19,283 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 886 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:19,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 192 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:30:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-04-02 06:30:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2023-04-02 06:30:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 235 states have (on average 1.3106382978723403) internal successors, (308), 245 states have internal predecessors, (308), 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 06:30:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 311 transitions. [2023-04-02 06:30:19,301 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 311 transitions. Word has length 65 [2023-04-02 06:30:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:19,301 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 311 transitions. [2023-04-02 06:30:19,302 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 06:30:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 311 transitions. [2023-04-02 06:30:19,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 06:30:19,303 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:19,303 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 06:30:19,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:30:19,303 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 06:30:19,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:19,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1399201326, now seen corresponding path program 1 times [2023-04-02 06:30:19,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:19,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105209573] [2023-04-02 06:30:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:19,858 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 06:30:19,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105209573] [2023-04-02 06:30:19,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105209573] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:19,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:19,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:30:19,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131598961] [2023-04-02 06:30:19,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:19,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:30:19,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:19,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:30:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:30:19,864 INFO L87 Difference]: Start difference. First operand 249 states and 311 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 06:30:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:21,017 INFO L93 Difference]: Finished difference Result 486 states and 607 transitions. [2023-04-02 06:30:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:30:21,017 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 06:30:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:21,019 INFO L225 Difference]: With dead ends: 486 [2023-04-02 06:30:21,019 INFO L226 Difference]: Without dead ends: 354 [2023-04-02 06:30:21,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:30:21,020 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1897 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:21,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 452 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:30:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-04-02 06:30:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 249. [2023-04-02 06:30:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 235 states have (on average 1.3063829787234043) internal successors, (307), 245 states have internal predecessors, (307), 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 06:30:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 310 transitions. [2023-04-02 06:30:21,056 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 310 transitions. Word has length 66 [2023-04-02 06:30:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:21,056 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 310 transitions. [2023-04-02 06:30:21,056 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 06:30:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 310 transitions. [2023-04-02 06:30:21,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 06:30:21,058 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:21,058 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 06:30:21,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:30:21,059 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 06:30:21,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:21,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1740017124, now seen corresponding path program 1 times [2023-04-02 06:30:21,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:21,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623963333] [2023-04-02 06:30:21,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:21,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:21,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:21,666 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 06:30:21,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:21,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623963333] [2023-04-02 06:30:21,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623963333] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:21,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:21,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:21,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135602133] [2023-04-02 06:30:21,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:21,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:21,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:21,669 INFO L87 Difference]: Start difference. First operand 249 states and 310 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 06:30:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:23,190 INFO L93 Difference]: Finished difference Result 553 states and 727 transitions. [2023-04-02 06:30:23,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:23,191 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 06:30:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:23,193 INFO L225 Difference]: With dead ends: 553 [2023-04-02 06:30:23,193 INFO L226 Difference]: Without dead ends: 488 [2023-04-02 06:30:23,194 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 06:30:23,195 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1978 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:23,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1978 Valid, 894 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:30:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-04-02 06:30:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 249. [2023-04-02 06:30:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 235 states have (on average 1.3021276595744682) internal successors, (306), 245 states have internal predecessors, (306), 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 06:30:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 309 transitions. [2023-04-02 06:30:23,221 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 309 transitions. Word has length 66 [2023-04-02 06:30:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:23,222 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 309 transitions. [2023-04-02 06:30:23,222 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 06:30:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 309 transitions. [2023-04-02 06:30:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 06:30:23,223 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:23,223 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 06:30:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:30:23,223 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 06:30:23,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1296061004, now seen corresponding path program 1 times [2023-04-02 06:30:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:23,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243219561] [2023-04-02 06:30:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:23,827 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 06:30:23,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243219561] [2023-04-02 06:30:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243219561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:23,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:23,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857773180] [2023-04-02 06:30:23,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:23,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:23,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:23,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:23,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:23,829 INFO L87 Difference]: Start difference. First operand 249 states and 309 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 06:30:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:25,279 INFO L93 Difference]: Finished difference Result 579 states and 759 transitions. [2023-04-02 06:30:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:25,279 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 06:30:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:25,281 INFO L225 Difference]: With dead ends: 579 [2023-04-02 06:30:25,281 INFO L226 Difference]: Without dead ends: 492 [2023-04-02 06:30:25,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:30:25,283 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1776 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:25,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 1059 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:30:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-04-02 06:30:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 249. [2023-04-02 06:30:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 235 states have (on average 1.297872340425532) internal successors, (305), 245 states have internal predecessors, (305), 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 06:30:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 308 transitions. [2023-04-02 06:30:25,309 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 308 transitions. Word has length 66 [2023-04-02 06:30:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:25,310 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 308 transitions. [2023-04-02 06:30:25,310 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 06:30:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 308 transitions. [2023-04-02 06:30:25,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:30:25,311 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:25,311 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 06:30:25,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:30:25,311 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 06:30:25,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:25,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1719197262, now seen corresponding path program 1 times [2023-04-02 06:30:25,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:25,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330265697] [2023-04-02 06:30:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:25,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:25,893 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 06:30:25,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:25,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330265697] [2023-04-02 06:30:25,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330265697] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:25,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:25,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:25,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800948373] [2023-04-02 06:30:25,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:25,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:25,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:25,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:25,896 INFO L87 Difference]: Start difference. First operand 249 states and 308 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 06:30:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:27,242 INFO L93 Difference]: Finished difference Result 535 states and 697 transitions. [2023-04-02 06:30:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:27,243 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 06:30:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:27,245 INFO L225 Difference]: With dead ends: 535 [2023-04-02 06:30:27,245 INFO L226 Difference]: Without dead ends: 480 [2023-04-02 06:30:27,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:30:27,246 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1858 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:27,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 915 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:30:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-04-02 06:30:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 249. [2023-04-02 06:30:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 235 states have (on average 1.2936170212765958) internal successors, (304), 245 states have internal predecessors, (304), 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 06:30:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 307 transitions. [2023-04-02 06:30:27,277 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 307 transitions. Word has length 68 [2023-04-02 06:30:27,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:27,277 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 307 transitions. [2023-04-02 06:30:27,277 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 06:30:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 307 transitions. [2023-04-02 06:30:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:30:27,278 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:27,278 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 06:30:27,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:30:27,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:27,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:27,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1301896145, now seen corresponding path program 1 times [2023-04-02 06:30:27,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:27,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099221090] [2023-04-02 06:30:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:28,117 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 06:30:28,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:28,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099221090] [2023-04-02 06:30:28,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099221090] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:28,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:28,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:30:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710940270] [2023-04-02 06:30:28,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:28,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:30:28,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:28,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:30:28,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:30:28,120 INFO L87 Difference]: Start difference. First operand 249 states and 307 transitions. Second operand has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 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 06:30:30,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:30,557 INFO L93 Difference]: Finished difference Result 770 states and 1025 transitions. [2023-04-02 06:30:30,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 06:30:30,557 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 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 06:30:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:30,563 INFO L225 Difference]: With dead ends: 770 [2023-04-02 06:30:30,563 INFO L226 Difference]: Without dead ends: 765 [2023-04-02 06:30:30,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:30:30,566 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 3955 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3955 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:30,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3955 Valid, 1138 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 06:30:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2023-04-02 06:30:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 253. [2023-04-02 06:30:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 239 states have (on average 1.288702928870293) internal successors, (308), 249 states have internal predecessors, (308), 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 06:30:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 311 transitions. [2023-04-02 06:30:30,609 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 311 transitions. Word has length 68 [2023-04-02 06:30:30,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:30,609 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 311 transitions. [2023-04-02 06:30:30,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 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 06:30:30,610 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 311 transitions. [2023-04-02 06:30:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:30:30,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:30,611 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 06:30:30,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:30:30,611 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 06:30:30,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1830933026, now seen corresponding path program 1 times [2023-04-02 06:30:30,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:30,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228756782] [2023-04-02 06:30:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:30,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:31,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:31,126 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 06:30:31,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228756782] [2023-04-02 06:30:31,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228756782] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:31,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:31,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:31,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220604081] [2023-04-02 06:30:31,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:31,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:31,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:31,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:31,128 INFO L87 Difference]: Start difference. First operand 253 states and 311 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 06:30:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:32,453 INFO L93 Difference]: Finished difference Result 538 states and 698 transitions. [2023-04-02 06:30:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:32,454 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 06:30:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:32,456 INFO L225 Difference]: With dead ends: 538 [2023-04-02 06:30:32,456 INFO L226 Difference]: Without dead ends: 480 [2023-04-02 06:30:32,457 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 06:30:32,458 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1116 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:32,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 932 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:30:32,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-04-02 06:30:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 253. [2023-04-02 06:30:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 239 states have (on average 1.284518828451883) internal successors, (307), 249 states have internal predecessors, (307), 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 06:30:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 310 transitions. [2023-04-02 06:30:32,501 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 310 transitions. Word has length 68 [2023-04-02 06:30:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:32,501 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 310 transitions. [2023-04-02 06:30:32,501 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 06:30:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 310 transitions. [2023-04-02 06:30:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:30:32,502 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:32,502 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 06:30:32,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:30:32,503 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 06:30:32,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:32,503 INFO L85 PathProgramCache]: Analyzing trace with hash 98223486, now seen corresponding path program 1 times [2023-04-02 06:30:32,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:32,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86903668] [2023-04-02 06:30:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:32,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:33,020 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 06:30:33,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:33,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86903668] [2023-04-02 06:30:33,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86903668] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:33,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:33,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:33,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932885829] [2023-04-02 06:30:33,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:33,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:33,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:33,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:33,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:33,023 INFO L87 Difference]: Start difference. First operand 253 states and 310 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 06:30:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:34,743 INFO L93 Difference]: Finished difference Result 562 states and 731 transitions. [2023-04-02 06:30:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:34,744 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 06:30:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:34,746 INFO L225 Difference]: With dead ends: 562 [2023-04-02 06:30:34,746 INFO L226 Difference]: Without dead ends: 492 [2023-04-02 06:30:34,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:30:34,747 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1471 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:34,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1118 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:30:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-04-02 06:30:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 253. [2023-04-02 06:30:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 239 states have (on average 1.2803347280334727) internal successors, (306), 249 states have internal predecessors, (306), 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 06:30:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 309 transitions. [2023-04-02 06:30:34,796 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 309 transitions. Word has length 68 [2023-04-02 06:30:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:34,796 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 309 transitions. [2023-04-02 06:30:34,796 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 06:30:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 309 transitions. [2023-04-02 06:30:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:30:34,797 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:34,797 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 06:30:34,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:30:34,797 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 06:30:34,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash -809912249, now seen corresponding path program 1 times [2023-04-02 06:30:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:34,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804032701] [2023-04-02 06:30:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:34,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:35,309 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 06:30:35,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:35,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804032701] [2023-04-02 06:30:35,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804032701] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:35,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:35,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:35,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924533506] [2023-04-02 06:30:35,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:35,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:35,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:35,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:35,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:35,311 INFO L87 Difference]: Start difference. First operand 253 states and 309 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 06:30:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:36,993 INFO L93 Difference]: Finished difference Result 485 states and 618 transitions. [2023-04-02 06:30:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:36,994 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 06:30:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:36,996 INFO L225 Difference]: With dead ends: 485 [2023-04-02 06:30:36,996 INFO L226 Difference]: Without dead ends: 480 [2023-04-02 06:30:36,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:30:36,997 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1761 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:36,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 987 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:30:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-04-02 06:30:37,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 253. [2023-04-02 06:30:37,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 239 states have (on average 1.2761506276150627) internal successors, (305), 249 states have internal predecessors, (305), 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 06:30:37,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 308 transitions. [2023-04-02 06:30:37,046 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 308 transitions. Word has length 68 [2023-04-02 06:30:37,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:37,046 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 308 transitions. [2023-04-02 06:30:37,046 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 06:30:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 308 transitions. [2023-04-02 06:30:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:30:37,047 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:37,047 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 06:30:37,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:30:37,048 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 06:30:37,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:37,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1194960410, now seen corresponding path program 1 times [2023-04-02 06:30:37,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:37,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005652621] [2023-04-02 06:30:37,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:37,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:37,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:37,580 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 06:30:37,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:37,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005652621] [2023-04-02 06:30:37,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005652621] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:37,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:37,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:37,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846335795] [2023-04-02 06:30:37,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:37,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:37,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:37,583 INFO L87 Difference]: Start difference. First operand 253 states and 308 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 06:30:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:39,057 INFO L93 Difference]: Finished difference Result 509 states and 650 transitions. [2023-04-02 06:30:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:39,058 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 06:30:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:39,059 INFO L225 Difference]: With dead ends: 509 [2023-04-02 06:30:39,060 INFO L226 Difference]: Without dead ends: 492 [2023-04-02 06:30:39,060 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 06:30:39,061 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1779 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:39,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 1030 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:30:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-04-02 06:30:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 253. [2023-04-02 06:30:39,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 239 states have (on average 1.2719665271966527) internal successors, (304), 249 states have internal predecessors, (304), 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 06:30:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 307 transitions. [2023-04-02 06:30:39,110 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 307 transitions. Word has length 68 [2023-04-02 06:30:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:39,110 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 307 transitions. [2023-04-02 06:30:39,111 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 06:30:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 307 transitions. [2023-04-02 06:30:39,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-02 06:30:39,111 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:39,112 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 06:30:39,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:30:39,112 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 06:30:39,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:39,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1087205780, now seen corresponding path program 1 times [2023-04-02 06:30:39,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:39,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841631958] [2023-04-02 06:30:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:39,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:39,560 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 06:30:39,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841631958] [2023-04-02 06:30:39,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841631958] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:39,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:39,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:39,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061626161] [2023-04-02 06:30:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:39,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:39,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:39,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:39,563 INFO L87 Difference]: Start difference. First operand 253 states and 307 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 06:30:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:41,027 INFO L93 Difference]: Finished difference Result 589 states and 760 transitions. [2023-04-02 06:30:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:41,027 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 06:30:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:41,029 INFO L225 Difference]: With dead ends: 589 [2023-04-02 06:30:41,029 INFO L226 Difference]: Without dead ends: 496 [2023-04-02 06:30:41,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:30:41,030 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1812 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:41,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 1145 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:30:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-04-02 06:30:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 253. [2023-04-02 06:30:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 239 states have (on average 1.2677824267782427) internal successors, (303), 249 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 06:30:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 306 transitions. [2023-04-02 06:30:41,088 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 306 transitions. Word has length 68 [2023-04-02 06:30:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:41,088 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 306 transitions. [2023-04-02 06:30:41,088 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 06:30:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 306 transitions. [2023-04-02 06:30:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-02 06:30:41,089 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:41,089 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] [2023-04-02 06:30:41,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:30:41,090 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:41,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:41,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1996361319, now seen corresponding path program 1 times [2023-04-02 06:30:41,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:41,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834215215] [2023-04-02 06:30:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:41,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:41,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:41,554 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 06:30:41,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:41,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834215215] [2023-04-02 06:30:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834215215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:41,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:41,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:30:41,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117020405] [2023-04-02 06:30:41,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:41,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:30:41,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:41,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:30:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:30:41,556 INFO L87 Difference]: Start difference. First operand 253 states and 306 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 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 06:30:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:43,033 INFO L93 Difference]: Finished difference Result 485 states and 615 transitions. [2023-04-02 06:30:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:30:43,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 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 69 [2023-04-02 06:30:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:43,035 INFO L225 Difference]: With dead ends: 485 [2023-04-02 06:30:43,035 INFO L226 Difference]: Without dead ends: 480 [2023-04-02 06:30:43,036 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 06:30:43,036 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1362 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:43,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 1111 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:30:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-04-02 06:30:43,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 249. [2023-04-02 06:30:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 235 states have (on average 1.2680851063829788) internal successors, (298), 245 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 06:30:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 301 transitions. [2023-04-02 06:30:43,089 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 301 transitions. Word has length 69 [2023-04-02 06:30:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:43,089 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 301 transitions. [2023-04-02 06:30:43,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 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 06:30:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 301 transitions. [2023-04-02 06:30:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:30:43,090 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:43,090 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 06:30:43,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:30:43,091 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 06:30:43,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1998700100, now seen corresponding path program 1 times [2023-04-02 06:30:43,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:43,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788969168] [2023-04-02 06:30:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:43,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:44,194 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 06:30:44,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788969168] [2023-04-02 06:30:44,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788969168] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:44,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:44,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 06:30:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047573383] [2023-04-02 06:30:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:44,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 06:30:44,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:44,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 06:30:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-04-02 06:30:44,196 INFO L87 Difference]: Start difference. First operand 249 states and 301 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 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 06:30:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:47,447 INFO L93 Difference]: Finished difference Result 714 states and 929 transitions. [2023-04-02 06:30:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:30:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 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 06:30:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:47,450 INFO L225 Difference]: With dead ends: 714 [2023-04-02 06:30:47,450 INFO L226 Difference]: Without dead ends: 658 [2023-04-02 06:30:47,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 06:30:47,451 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1809 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:47,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 3834 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 06:30:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-04-02 06:30:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 249. [2023-04-02 06:30:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 235 states have (on average 1.2595744680851064) internal successors, (296), 245 states have internal predecessors, (296), 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 06:30:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 299 transitions. [2023-04-02 06:30:47,522 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 299 transitions. Word has length 70 [2023-04-02 06:30:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:47,522 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 299 transitions. [2023-04-02 06:30:47,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 17 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 06:30:47,522 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 299 transitions. [2023-04-02 06:30:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:30:47,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:47,523 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 06:30:47,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:30:47,524 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:47,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1642921653, now seen corresponding path program 1 times [2023-04-02 06:30:47,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:47,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138628376] [2023-04-02 06:30:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:49,145 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 06:30:49,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:49,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138628376] [2023-04-02 06:30:49,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138628376] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:49,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:49,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-04-02 06:30:49,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778367108] [2023-04-02 06:30:49,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:49,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-02 06:30:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-02 06:30:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2023-04-02 06:30:49,147 INFO L87 Difference]: Start difference. First operand 249 states and 299 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 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 06:30:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:54,405 INFO L93 Difference]: Finished difference Result 793 states and 989 transitions. [2023-04-02 06:30:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-02 06:30:54,406 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 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 06:30:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:54,408 INFO L225 Difference]: With dead ends: 793 [2023-04-02 06:30:54,408 INFO L226 Difference]: Without dead ends: 739 [2023-04-02 06:30:54,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=525, Invalid=2127, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 06:30:54,409 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 3025 mSDsluCounter, 5934 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3025 SdHoareTripleChecker+Valid, 6389 SdHoareTripleChecker+Invalid, 4055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:54,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3025 Valid, 6389 Invalid, 4055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4012 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 06:30:54,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2023-04-02 06:30:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 255. [2023-04-02 06:30:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 241 states have (on average 1.2572614107883817) internal successors, (303), 251 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 06:30:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 306 transitions. [2023-04-02 06:30:54,494 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 306 transitions. Word has length 70 [2023-04-02 06:30:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:54,494 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 306 transitions. [2023-04-02 06:30:54,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 25 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 06:30:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 306 transitions. [2023-04-02 06:30:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:30:54,495 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:54,496 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 06:30:54,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:30:54,496 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr10ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:54,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1198664342, now seen corresponding path program 1 times [2023-04-02 06:30:54,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:54,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822418810] [2023-04-02 06:30:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:55,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:55,191 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 06:30:55,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:55,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822418810] [2023-04-02 06:30:55,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822418810] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:55,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:55,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:30:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459870696] [2023-04-02 06:30:55,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:55,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:30:55,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:30:55,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:30:55,195 INFO L87 Difference]: Start difference. First operand 255 states and 306 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 06:30:57,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:57,265 INFO L93 Difference]: Finished difference Result 688 states and 902 transitions. [2023-04-02 06:30:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:30:57,265 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 06:30:57,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:57,267 INFO L225 Difference]: With dead ends: 688 [2023-04-02 06:30:57,267 INFO L226 Difference]: Without dead ends: 605 [2023-04-02 06:30:57,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:30:57,268 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2041 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2041 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:57,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2041 Valid, 2851 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:30:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-04-02 06:30:57,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 225. [2023-04-02 06:30:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 212 states have (on average 1.2641509433962264) internal successors, (268), 221 states have internal predecessors, (268), 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 06:30:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 271 transitions. [2023-04-02 06:30:57,332 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 271 transitions. Word has length 70 [2023-04-02 06:30:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:57,332 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 271 transitions. [2023-04-02 06:30:57,332 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 06:30:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 271 transitions. [2023-04-02 06:30:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:30:57,333 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:57,333 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 06:30:57,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:30:57,333 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr9ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:30:57,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash 434399906, now seen corresponding path program 1 times [2023-04-02 06:30:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:57,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389626] [2023-04-02 06:30:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:30:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:30:57,997 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 06:30:57,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:30:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389626] [2023-04-02 06:30:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389626] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:30:57,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:30:57,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:30:57,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938397043] [2023-04-02 06:30:57,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:30:57,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:30:57,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:30:58,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:30:58,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:30:58,000 INFO L87 Difference]: Start difference. First operand 225 states and 271 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 06:30:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:30:59,701 INFO L93 Difference]: Finished difference Result 575 states and 724 transitions. [2023-04-02 06:30:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:30:59,701 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 06:30:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:30:59,702 INFO L225 Difference]: With dead ends: 575 [2023-04-02 06:30:59,702 INFO L226 Difference]: Without dead ends: 483 [2023-04-02 06:30:59,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:30:59,703 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1612 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:30:59,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 1058 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:30:59,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-04-02 06:30:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 186. [2023-04-02 06:30:59,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 176 states have (on average 1.2556818181818181) internal successors, (221), 182 states have internal predecessors, (221), 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 06:30:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 224 transitions. [2023-04-02 06:30:59,778 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 224 transitions. Word has length 70 [2023-04-02 06:30:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:30:59,778 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 224 transitions. [2023-04-02 06:30:59,778 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 06:30:59,778 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 224 transitions. [2023-04-02 06:30:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:30:59,779 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:30:59,779 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 06:30:59,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:30:59,779 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 06:30:59,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:30:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1569202963, now seen corresponding path program 1 times [2023-04-02 06:30:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:30:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543769588] [2023-04-02 06:30:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:30:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:30:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:00,526 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 06:31:00,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:00,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543769588] [2023-04-02 06:31:00,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543769588] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:00,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:00,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:31:00,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247011432] [2023-04-02 06:31:00,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:00,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:31:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:31:00,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:31:00,528 INFO L87 Difference]: Start difference. First operand 186 states and 224 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 06:31:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:02,779 INFO L93 Difference]: Finished difference Result 567 states and 758 transitions. [2023-04-02 06:31:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:31:02,780 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 06:31:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:02,782 INFO L225 Difference]: With dead ends: 567 [2023-04-02 06:31:02,782 INFO L226 Difference]: Without dead ends: 498 [2023-04-02 06:31:02,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:31:02,784 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1267 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:02,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 2316 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:31:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-04-02 06:31:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 170. [2023-04-02 06:31:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 162 states have (on average 1.2469135802469136) internal successors, (202), 166 states have internal predecessors, (202), 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 06:31:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 205 transitions. [2023-04-02 06:31:02,850 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 205 transitions. Word has length 70 [2023-04-02 06:31:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:02,850 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 205 transitions. [2023-04-02 06:31:02,850 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 06:31:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 205 transitions. [2023-04-02 06:31:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-02 06:31:02,851 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:02,851 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 06:31:02,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:31:02,851 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:31:02,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:02,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1935468157, now seen corresponding path program 1 times [2023-04-02 06:31:02,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:02,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449708350] [2023-04-02 06:31:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:03,486 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 06:31:03,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:03,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449708350] [2023-04-02 06:31:03,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449708350] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:03,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:03,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:31:03,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035173401] [2023-04-02 06:31:03,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:03,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:31:03,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:31:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:31:03,488 INFO L87 Difference]: Start difference. First operand 170 states and 205 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 06:31:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:05,399 INFO L93 Difference]: Finished difference Result 463 states and 608 transitions. [2023-04-02 06:31:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:31:05,400 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 06:31:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:05,401 INFO L225 Difference]: With dead ends: 463 [2023-04-02 06:31:05,401 INFO L226 Difference]: Without dead ends: 377 [2023-04-02 06:31:05,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:31:05,402 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 828 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:05,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 2491 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:31:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-04-02 06:31:05,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 137. [2023-04-02 06:31:05,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 133 states have internal predecessors, (164), 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 06:31:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 167 transitions. [2023-04-02 06:31:05,472 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 167 transitions. Word has length 70 [2023-04-02 06:31:05,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:05,472 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 167 transitions. [2023-04-02 06:31:05,472 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 06:31:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 167 transitions. [2023-04-02 06:31:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 06:31:05,473 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:05,473 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 06:31:05,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:31:05,473 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 06:31:05,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:05,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1571731529, now seen corresponding path program 1 times [2023-04-02 06:31:05,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:05,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054789331] [2023-04-02 06:31:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:05,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:06,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:06,047 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 06:31:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054789331] [2023-04-02 06:31:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054789331] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:31:06,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399834768] [2023-04-02 06:31:06,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:06,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:31:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:31:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:31:06,049 INFO L87 Difference]: Start difference. First operand 137 states and 167 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 06:31:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:08,964 INFO L93 Difference]: Finished difference Result 774 states and 1068 transitions. [2023-04-02 06:31:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 06:31:08,966 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 06:31:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:08,968 INFO L225 Difference]: With dead ends: 774 [2023-04-02 06:31:08,968 INFO L226 Difference]: Without dead ends: 703 [2023-04-02 06:31:08,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:31:08,969 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2323 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:08,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2323 Valid, 1348 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:31:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2023-04-02 06:31:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 141. [2023-04-02 06:31:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.2352941176470589) internal successors, (168), 137 states have internal predecessors, (168), 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 06:31:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2023-04-02 06:31:09,028 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 71 [2023-04-02 06:31:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:09,028 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2023-04-02 06:31:09,028 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 06:31:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2023-04-02 06:31:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 06:31:09,029 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:09,029 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 06:31:09,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:31:09,029 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 06:31:09,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash -330810011, now seen corresponding path program 1 times [2023-04-02 06:31:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319592287] [2023-04-02 06:31:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:09,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:09,478 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 06:31:09,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:09,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319592287] [2023-04-02 06:31:09,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319592287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:09,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:09,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:31:09,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363788321] [2023-04-02 06:31:09,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:09,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:31:09,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:09,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:31:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:31:09,480 INFO L87 Difference]: Start difference. First operand 141 states and 171 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 06:31:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:10,451 INFO L93 Difference]: Finished difference Result 288 states and 371 transitions. [2023-04-02 06:31:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:31:10,452 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 06:31:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:10,453 INFO L225 Difference]: With dead ends: 288 [2023-04-02 06:31:10,453 INFO L226 Difference]: Without dead ends: 217 [2023-04-02 06:31:10,453 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 06:31:10,453 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 725 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:10,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 517 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:31:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-04-02 06:31:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 137. [2023-04-02 06:31:10,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 132 states have (on average 1.2348484848484849) internal successors, (163), 133 states have internal predecessors, (163), 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 06:31:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 166 transitions. [2023-04-02 06:31:10,515 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 166 transitions. Word has length 72 [2023-04-02 06:31:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:10,515 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 166 transitions. [2023-04-02 06:31:10,515 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 06:31:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 166 transitions. [2023-04-02 06:31:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-02 06:31:10,516 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:10,516 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 06:31:10,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:31:10,516 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 06:31:10,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1697673669, now seen corresponding path program 1 times [2023-04-02 06:31:10,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:10,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917004410] [2023-04-02 06:31:10,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:11,782 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 06:31:11,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:11,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917004410] [2023-04-02 06:31:11,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917004410] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:11,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:11,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-02 06:31:11,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118490074] [2023-04-02 06:31:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:11,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 06:31:11,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:11,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 06:31:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:31:11,784 INFO L87 Difference]: Start difference. First operand 137 states and 166 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 06:31:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:15,693 INFO L93 Difference]: Finished difference Result 572 states and 757 transitions. [2023-04-02 06:31:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 06:31:15,694 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 06:31:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:15,696 INFO L225 Difference]: With dead ends: 572 [2023-04-02 06:31:15,696 INFO L226 Difference]: Without dead ends: 566 [2023-04-02 06:31:15,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 06:31:15,697 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1739 mSDsluCounter, 5181 mSDsCounter, 0 mSdLazyCounter, 3260 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 5606 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:15,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 5606 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3260 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 06:31:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-04-02 06:31:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 153. [2023-04-02 06:31:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.2364864864864864) internal successors, (183), 149 states have internal predecessors, (183), 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 06:31:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 186 transitions. [2023-04-02 06:31:15,770 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 186 transitions. Word has length 73 [2023-04-02 06:31:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:15,770 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 186 transitions. [2023-04-02 06:31:15,770 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 06:31:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 186 transitions. [2023-04-02 06:31:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:31:15,771 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:15,771 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 06:31:15,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:31:15,771 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:31:15,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1277317235, now seen corresponding path program 1 times [2023-04-02 06:31:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:15,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771549336] [2023-04-02 06:31:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:15,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:16,729 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 06:31:16,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:16,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771549336] [2023-04-02 06:31:16,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771549336] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:16,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:16,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 06:31:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625394792] [2023-04-02 06:31:16,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:16,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 06:31:16,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 06:31:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:31:16,731 INFO L87 Difference]: Start difference. First operand 153 states and 186 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 06:31:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:19,872 INFO L93 Difference]: Finished difference Result 654 states and 887 transitions. [2023-04-02 06:31:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:31:19,872 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 06:31:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:19,874 INFO L225 Difference]: With dead ends: 654 [2023-04-02 06:31:19,874 INFO L226 Difference]: Without dead ends: 648 [2023-04-02 06:31:19,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 06:31:19,875 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1339 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:19,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 3459 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:31:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-04-02 06:31:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 160. [2023-04-02 06:31:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.232258064516129) internal successors, (191), 156 states have internal predecessors, (191), 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 06:31:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 194 transitions. [2023-04-02 06:31:19,967 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 194 transitions. Word has length 74 [2023-04-02 06:31:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:19,967 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 194 transitions. [2023-04-02 06:31:19,967 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 06:31:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 194 transitions. [2023-04-02 06:31:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 06:31:19,968 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:19,968 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 06:31:19,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:31:19,968 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 06:31:19,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1467218972, now seen corresponding path program 1 times [2023-04-02 06:31:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760653097] [2023-04-02 06:31:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:20,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:20,596 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 06:31:20,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:20,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760653097] [2023-04-02 06:31:20,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760653097] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:20,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:20,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:31:20,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298473134] [2023-04-02 06:31:20,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:20,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:31:20,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:20,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:31:20,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:31:20,599 INFO L87 Difference]: Start difference. First operand 160 states and 194 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 06:31:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:22,464 INFO L93 Difference]: Finished difference Result 352 states and 463 transitions. [2023-04-02 06:31:22,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:31:22,465 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 06:31:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:22,466 INFO L225 Difference]: With dead ends: 352 [2023-04-02 06:31:22,466 INFO L226 Difference]: Without dead ends: 346 [2023-04-02 06:31:22,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:31:22,467 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 451 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:22,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1537 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:31:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-04-02 06:31:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 131. [2023-04-02 06:31:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.236220472440945) internal successors, (157), 127 states have internal predecessors, (157), 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 06:31:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2023-04-02 06:31:22,536 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 74 [2023-04-02 06:31:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:22,536 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2023-04-02 06:31:22,536 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 06:31:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2023-04-02 06:31:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:31:22,537 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:22,537 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 06:31:22,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:31:22,537 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:31:22,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:22,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1715955800, now seen corresponding path program 1 times [2023-04-02 06:31:22,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:22,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433201360] [2023-04-02 06:31:22,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:22,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:22,932 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 06:31:22,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:22,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433201360] [2023-04-02 06:31:22,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433201360] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:22,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:22,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:31:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568896767] [2023-04-02 06:31:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:22,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:31:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:31:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:31:22,935 INFO L87 Difference]: Start difference. First operand 131 states and 160 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 06:31:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:24,073 INFO L93 Difference]: Finished difference Result 555 states and 776 transitions. [2023-04-02 06:31:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:31:24,074 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 06:31:24,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:24,076 INFO L225 Difference]: With dead ends: 555 [2023-04-02 06:31:24,076 INFO L226 Difference]: Without dead ends: 502 [2023-04-02 06:31:24,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:31:24,077 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 875 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:24,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 946 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:31:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-04-02 06:31:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 182. [2023-04-02 06:31:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 178 states have (on average 1.303370786516854) internal successors, (232), 178 states have internal predecessors, (232), 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 06:31:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 235 transitions. [2023-04-02 06:31:24,246 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 235 transitions. Word has length 96 [2023-04-02 06:31:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:24,247 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 235 transitions. [2023-04-02 06:31:24,247 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 06:31:24,247 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 235 transitions. [2023-04-02 06:31:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:31:24,247 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:24,247 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 06:31:24,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:31:24,248 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-04-02 06:31:24,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:24,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1336514200, now seen corresponding path program 1 times [2023-04-02 06:31:24,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:24,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101120717] [2023-04-02 06:31:24,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:24,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:24,587 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 06:31:24,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:24,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101120717] [2023-04-02 06:31:24,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101120717] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:24,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:24,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:31:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710937595] [2023-04-02 06:31:24,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:24,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:31:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:31:24,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:31:24,589 INFO L87 Difference]: Start difference. First operand 182 states and 235 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 06:31:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:25,656 INFO L93 Difference]: Finished difference Result 651 states and 919 transitions. [2023-04-02 06:31:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:31:25,657 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 06:31:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:25,659 INFO L225 Difference]: With dead ends: 651 [2023-04-02 06:31:25,662 INFO L226 Difference]: Without dead ends: 547 [2023-04-02 06:31:25,664 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 06:31:25,664 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 629 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:25,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 675 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:31:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-04-02 06:31:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 233. [2023-04-02 06:31:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 229 states have (on average 1.3406113537117903) internal successors, (307), 229 states have internal predecessors, (307), 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 06:31:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 310 transitions. [2023-04-02 06:31:25,862 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 310 transitions. Word has length 98 [2023-04-02 06:31:25,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:25,862 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 310 transitions. [2023-04-02 06:31:25,863 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 06:31:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 310 transitions. [2023-04-02 06:31:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:31:25,863 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:25,863 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 06:31:25,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:31:25,864 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 06:31:25,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 658138987, now seen corresponding path program 1 times [2023-04-02 06:31:25,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:25,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239412164] [2023-04-02 06:31:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:26,221 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 06:31:26,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:26,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239412164] [2023-04-02 06:31:26,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239412164] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:26,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:26,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:31:26,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205457120] [2023-04-02 06:31:26,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:26,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:31:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:31:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:31:26,223 INFO L87 Difference]: Start difference. First operand 233 states and 310 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 06:31:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:26,920 INFO L93 Difference]: Finished difference Result 441 states and 613 transitions. [2023-04-02 06:31:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:31:26,921 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 06:31:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:26,922 INFO L225 Difference]: With dead ends: 441 [2023-04-02 06:31:26,922 INFO L226 Difference]: Without dead ends: 286 [2023-04-02 06:31:26,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:31:26,923 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 200 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:26,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 378 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:31:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-04-02 06:31:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2023-04-02 06:31:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 280 states have (on average 1.3571428571428572) internal successors, (380), 280 states have internal predecessors, (380), 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 06:31:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 383 transitions. [2023-04-02 06:31:27,151 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 383 transitions. Word has length 98 [2023-04-02 06:31:27,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:27,151 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 383 transitions. [2023-04-02 06:31:27,151 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 06:31:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 383 transitions. [2023-04-02 06:31:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:31:27,152 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:27,152 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 06:31:27,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:31:27,152 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 06:31:27,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash -52048662, now seen corresponding path program 1 times [2023-04-02 06:31:27,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:27,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807701804] [2023-04-02 06:31:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:27,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:27,430 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 06:31:27,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807701804] [2023-04-02 06:31:27,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807701804] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:27,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:27,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:31:27,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246074649] [2023-04-02 06:31:27,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:27,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:31:27,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:27,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:31:27,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:31:27,433 INFO L87 Difference]: Start difference. First operand 284 states and 383 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 06:31:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:28,274 INFO L93 Difference]: Finished difference Result 641 states and 902 transitions. [2023-04-02 06:31:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:31:28,275 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 06:31:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:28,276 INFO L225 Difference]: With dead ends: 641 [2023-04-02 06:31:28,276 INFO L226 Difference]: Without dead ends: 435 [2023-04-02 06:31:28,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:31:28,277 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 92 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:28,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 250 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:31:28,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-04-02 06:31:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 430. [2023-04-02 06:31:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 426 states have (on average 1.3779342723004695) internal successors, (587), 426 states have internal predecessors, (587), 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 06:31:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 590 transitions. [2023-04-02 06:31:28,680 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 590 transitions. Word has length 98 [2023-04-02 06:31:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:28,681 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 590 transitions. [2023-04-02 06:31:28,681 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 06:31:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 590 transitions. [2023-04-02 06:31:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:31:28,682 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:28,682 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 06:31:28,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:31:28,682 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 06:31:28,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash -753400588, now seen corresponding path program 1 times [2023-04-02 06:31:28,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:28,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282506841] [2023-04-02 06:31:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:28,986 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 06:31:28,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:28,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282506841] [2023-04-02 06:31:28,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282506841] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:28,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:28,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:31:28,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139559803] [2023-04-02 06:31:28,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:28,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:31:28,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:31:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:31:28,988 INFO L87 Difference]: Start difference. First operand 430 states and 590 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 06:31:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:30,595 INFO L93 Difference]: Finished difference Result 1235 states and 1747 transitions. [2023-04-02 06:31:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:31:30,597 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 06:31:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:30,600 INFO L225 Difference]: With dead ends: 1235 [2023-04-02 06:31:30,600 INFO L226 Difference]: Without dead ends: 1053 [2023-04-02 06:31:30,601 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 06:31:30,601 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 598 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 677 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 06:31:30,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 677 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:31:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-04-02 06:31:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 685. [2023-04-02 06:31:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 681 states have (on average 1.4008810572687225) internal successors, (954), 681 states have internal predecessors, (954), 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 06:31:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 957 transitions. [2023-04-02 06:31:31,356 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 957 transitions. Word has length 98 [2023-04-02 06:31:31,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:31,356 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 957 transitions. [2023-04-02 06:31:31,356 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 06:31:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 957 transitions. [2023-04-02 06:31:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:31:31,357 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:31,357 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 06:31:31,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:31:31,358 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 06:31:31,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash 237179758, now seen corresponding path program 1 times [2023-04-02 06:31:31,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:31,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003138940] [2023-04-02 06:31:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:31,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:31,654 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 06:31:31,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:31,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003138940] [2023-04-02 06:31:31,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003138940] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:31,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:31,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:31:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961433896] [2023-04-02 06:31:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:31,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:31:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:31:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:31:31,656 INFO L87 Difference]: Start difference. First operand 685 states and 957 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 06:31:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:33,473 INFO L93 Difference]: Finished difference Result 1405 states and 1992 transitions. [2023-04-02 06:31:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:31:33,474 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 06:31:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:33,477 INFO L225 Difference]: With dead ends: 1405 [2023-04-02 06:31:33,477 INFO L226 Difference]: Without dead ends: 1223 [2023-04-02 06:31:33,478 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 06:31:33,478 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 566 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 730 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 06:31:33,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 730 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:31:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2023-04-02 06:31:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 855. [2023-04-02 06:31:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 851 states have (on average 1.408930669800235) internal successors, (1199), 851 states have internal predecessors, (1199), 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 06:31:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1202 transitions. [2023-04-02 06:31:34,357 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1202 transitions. Word has length 98 [2023-04-02 06:31:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:34,357 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1202 transitions. [2023-04-02 06:31:34,357 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 06:31:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1202 transitions. [2023-04-02 06:31:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:31:34,358 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:34,358 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 06:31:34,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:31:34,359 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 06:31:34,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1131695430, now seen corresponding path program 1 times [2023-04-02 06:31:34,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:34,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165821400] [2023-04-02 06:31:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:34,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:34,620 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 06:31:34,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:34,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165821400] [2023-04-02 06:31:34,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165821400] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:34,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:34,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:31:34,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126330951] [2023-04-02 06:31:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:34,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:31:34,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:31:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:31:34,622 INFO L87 Difference]: Start difference. First operand 855 states and 1202 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 06:31:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:36,798 INFO L93 Difference]: Finished difference Result 2337 states and 3314 transitions. [2023-04-02 06:31:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:31:36,799 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 06:31:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:36,803 INFO L225 Difference]: With dead ends: 2337 [2023-04-02 06:31:36,803 INFO L226 Difference]: Without dead ends: 1560 [2023-04-02 06:31:36,804 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 06:31:36,804 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 72 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:36,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 328 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:31:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2023-04-02 06:31:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1486. [2023-04-02 06:31:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1482 states have (on average 1.4055330634278003) internal successors, (2083), 1482 states have internal predecessors, (2083), 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 06:31:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2086 transitions. [2023-04-02 06:31:38,316 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2086 transitions. Word has length 99 [2023-04-02 06:31:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:38,316 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2086 transitions. [2023-04-02 06:31:38,316 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 06:31:38,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2086 transitions. [2023-04-02 06:31:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:31:38,317 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:38,317 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 06:31:38,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-04-02 06:31:38,318 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 06:31:38,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1338787684, now seen corresponding path program 1 times [2023-04-02 06:31:38,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:38,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138084801] [2023-04-02 06:31:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:38,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:38,620 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 06:31:38,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:38,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138084801] [2023-04-02 06:31:38,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138084801] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:38,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:38,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:31:38,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308728053] [2023-04-02 06:31:38,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:38,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:31:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:31:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:31:38,622 INFO L87 Difference]: Start difference. First operand 1486 states and 2086 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 06:31:42,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:42,020 INFO L93 Difference]: Finished difference Result 4158 states and 5840 transitions. [2023-04-02 06:31:42,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:31:42,021 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 06:31:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:42,028 INFO L225 Difference]: With dead ends: 4158 [2023-04-02 06:31:42,028 INFO L226 Difference]: Without dead ends: 2750 [2023-04-02 06:31:42,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:31:42,030 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 65 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:42,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 328 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:31:42,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2023-04-02 06:31:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2604. [2023-04-02 06:31:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2600 states have (on average 1.3911538461538462) internal successors, (3617), 2600 states have internal predecessors, (3617), 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 06:31:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3620 transitions. [2023-04-02 06:31:44,841 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3620 transitions. Word has length 100 [2023-04-02 06:31:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:44,842 INFO L495 AbstractCegarLoop]: Abstraction has 2604 states and 3620 transitions. [2023-04-02 06:31:44,842 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 06:31:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3620 transitions. [2023-04-02 06:31:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 06:31:44,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:44,843 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 06:31:44,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-04-02 06:31:44,843 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 06:31:44,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1540448183, now seen corresponding path program 1 times [2023-04-02 06:31:44,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:44,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919786529] [2023-04-02 06:31:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:44,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:45,133 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 06:31:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:45,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919786529] [2023-04-02 06:31:45,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919786529] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:45,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:45,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:31:45,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719944092] [2023-04-02 06:31:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:45,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:31:45,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:31:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:31:45,135 INFO L87 Difference]: Start difference. First operand 2604 states and 3620 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 06:31:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:31:50,756 INFO L93 Difference]: Finished difference Result 7368 states and 10190 transitions. [2023-04-02 06:31:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:31:50,756 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 06:31:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:31:50,767 INFO L225 Difference]: With dead ends: 7368 [2023-04-02 06:31:50,767 INFO L226 Difference]: Without dead ends: 4842 [2023-04-02 06:31:50,771 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 06:31:50,772 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 55 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:31:50,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 328 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:31:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2023-04-02 06:31:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4552. [2023-04-02 06:31:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4552 states, 4548 states have (on average 1.3669744942832014) internal successors, (6217), 4548 states have internal predecessors, (6217), 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 06:31:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6220 transitions. [2023-04-02 06:31:56,242 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6220 transitions. Word has length 101 [2023-04-02 06:31:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:31:56,242 INFO L495 AbstractCegarLoop]: Abstraction has 4552 states and 6220 transitions. [2023-04-02 06:31:56,242 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 06:31:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6220 transitions. [2023-04-02 06:31:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:31:56,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:31:56,243 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 06:31:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-04-02 06:31:56,243 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 06:31:56,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:31:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash 524593141, now seen corresponding path program 1 times [2023-04-02 06:31:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:31:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542834393] [2023-04-02 06:31:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:31:56,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:31:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:31:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:31:56,594 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 06:31:56,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:31:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542834393] [2023-04-02 06:31:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542834393] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:31:56,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:31:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:31:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787122753] [2023-04-02 06:31:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:31:56,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:31:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:31:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:31:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:31:56,596 INFO L87 Difference]: Start difference. First operand 4552 states and 6220 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 06:32:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:32:04,735 INFO L93 Difference]: Finished difference Result 6836 states and 9273 transitions. [2023-04-02 06:32:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:32:04,736 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 06:32:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:32:04,755 INFO L225 Difference]: With dead ends: 6836 [2023-04-02 06:32:04,755 INFO L226 Difference]: Without dead ends: 6834 [2023-04-02 06:32:04,757 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 06:32:04,757 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 249 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:32:04,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 834 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:32:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2023-04-02 06:32:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 4648. [2023-04-02 06:32:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4644 states have (on average 1.3507751937984496) internal successors, (6273), 4644 states have internal predecessors, (6273), 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 06:32:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 6276 transitions. [2023-04-02 06:32:10,040 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 6276 transitions. Word has length 102 [2023-04-02 06:32:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:32:10,040 INFO L495 AbstractCegarLoop]: Abstraction has 4648 states and 6276 transitions. [2023-04-02 06:32:10,040 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 06:32:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 6276 transitions. [2023-04-02 06:32:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:32:10,041 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:32:10,041 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 06:32:10,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-04-02 06:32:10,042 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 06:32:10,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:32:10,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2082038431, now seen corresponding path program 1 times [2023-04-02 06:32:10,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:32:10,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345331989] [2023-04-02 06:32:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:32:10,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:32:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:32:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:32:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:32:10,332 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 06:32:10,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:32:10,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345331989] [2023-04-02 06:32:10,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345331989] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:32:10,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:32:10,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:32:10,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75728939] [2023-04-02 06:32:10,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:32:10,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:32:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:32:10,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:32:10,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:32:10,334 INFO L87 Difference]: Start difference. First operand 4648 states and 6276 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 06:32:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:32:19,545 INFO L93 Difference]: Finished difference Result 8896 states and 12088 transitions. [2023-04-02 06:32:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 06:32:19,546 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 06:32:19,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:32:19,558 INFO L225 Difference]: With dead ends: 8896 [2023-04-02 06:32:19,559 INFO L226 Difference]: Without dead ends: 7814 [2023-04-02 06:32:19,561 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 06:32:19,561 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 617 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:32:19,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 752 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:32:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7814 states. [2023-04-02 06:32:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7814 to 5648. [2023-04-02 06:32:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5648 states, 5644 states have (on average 1.35099220411056) internal successors, (7625), 5644 states have internal predecessors, (7625), 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 06:32:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5648 states to 5648 states and 7628 transitions. [2023-04-02 06:32:26,190 INFO L78 Accepts]: Start accepts. Automaton has 5648 states and 7628 transitions. Word has length 102 [2023-04-02 06:32:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:32:26,190 INFO L495 AbstractCegarLoop]: Abstraction has 5648 states and 7628 transitions. [2023-04-02 06:32:26,191 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 06:32:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5648 states and 7628 transitions. [2023-04-02 06:32:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:32:26,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:32:26,192 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 06:32:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-04-02 06:32:26,192 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 06:32:26,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:32:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1040048868, now seen corresponding path program 1 times [2023-04-02 06:32:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:32:26,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999659376] [2023-04-02 06:32:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:32:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:32:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:32:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:32:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:32:26,570 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 06:32:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:32:26,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999659376] [2023-04-02 06:32:26,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999659376] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:32:26,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:32:26,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:32:26,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846958630] [2023-04-02 06:32:26,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:32:26,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:32:26,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:32:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:32:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:32:26,573 INFO L87 Difference]: Start difference. First operand 5648 states and 7628 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 06:32:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:32:36,964 INFO L93 Difference]: Finished difference Result 13584 states and 18244 transitions. [2023-04-02 06:32:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:32:36,965 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 06:32:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:32:36,980 INFO L225 Difference]: With dead ends: 13584 [2023-04-02 06:32:36,980 INFO L226 Difference]: Without dead ends: 8014 [2023-04-02 06:32:36,987 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 06:32:36,988 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1000 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:32:36,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 295 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:32:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8014 states. [2023-04-02 06:32:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8014 to 5648. [2023-04-02 06:32:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5648 states, 5644 states have (on average 1.335400425230333) internal successors, (7537), 5644 states have internal predecessors, (7537), 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 06:32:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5648 states to 5648 states and 7540 transitions. [2023-04-02 06:32:43,863 INFO L78 Accepts]: Start accepts. Automaton has 5648 states and 7540 transitions. Word has length 104 [2023-04-02 06:32:43,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:32:43,863 INFO L495 AbstractCegarLoop]: Abstraction has 5648 states and 7540 transitions. [2023-04-02 06:32:43,864 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 06:32:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5648 states and 7540 transitions. [2023-04-02 06:32:43,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 06:32:43,866 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:32:43,866 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 06:32:43,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-04-02 06:32:43,866 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 06:32:43,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:32:43,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1929123121, now seen corresponding path program 1 times [2023-04-02 06:32:43,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:32:43,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68052280] [2023-04-02 06:32:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:32:43,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:32:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:32:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:32:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:32:44,180 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 06:32:44,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:32:44,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68052280] [2023-04-02 06:32:44,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68052280] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:32:44,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:32:44,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:32:44,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368436909] [2023-04-02 06:32:44,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:32:44,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:32:44,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:32:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:32:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:32:44,182 INFO L87 Difference]: Start difference. First operand 5648 states and 7540 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 06:32:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:32:52,913 INFO L93 Difference]: Finished difference Result 12580 states and 16802 transitions. [2023-04-02 06:32:52,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:32:52,914 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 06:32:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:32:52,928 INFO L225 Difference]: With dead ends: 12580 [2023-04-02 06:32:52,928 INFO L226 Difference]: Without dead ends: 7010 [2023-04-02 06:32:52,937 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 06:32:52,938 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 66 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:32:52,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 298 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:32:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7010 states. [2023-04-02 06:33:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7010 to 6472. [2023-04-02 06:33:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6472 states, 6468 states have (on average 1.3180272108843538) internal successors, (8525), 6468 states have internal predecessors, (8525), 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 06:33:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6472 states to 6472 states and 8528 transitions. [2023-04-02 06:33:00,995 INFO L78 Accepts]: Start accepts. Automaton has 6472 states and 8528 transitions. Word has length 129 [2023-04-02 06:33:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:00,996 INFO L495 AbstractCegarLoop]: Abstraction has 6472 states and 8528 transitions. [2023-04-02 06:33:00,996 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 06:33:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6472 states and 8528 transitions. [2023-04-02 06:33:00,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 06:33:00,998 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:00,999 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 06:33:00,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-04-02 06:33:00,999 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 06:33:00,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1614609737, now seen corresponding path program 1 times [2023-04-02 06:33:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:01,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115411598] [2023-04-02 06:33:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:01,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:01,282 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 06:33:01,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:01,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115411598] [2023-04-02 06:33:01,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115411598] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:01,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:01,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:33:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420641306] [2023-04-02 06:33:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:01,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:33:01,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:01,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:33:01,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:33:01,286 INFO L87 Difference]: Start difference. First operand 6472 states and 8528 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) [2023-04-02 06:33:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:08,855 INFO L93 Difference]: Finished difference Result 12770 states and 16877 transitions. [2023-04-02 06:33:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:33:08,856 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 129 [2023-04-02 06:33:08,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:08,868 INFO L225 Difference]: With dead ends: 12770 [2023-04-02 06:33:08,869 INFO L226 Difference]: Without dead ends: 6280 [2023-04-02 06:33:08,878 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 06:33:08,879 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:08,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:33:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2023-04-02 06:33:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6272. [2023-04-02 06:33:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6272 states, 6268 states have (on average 1.312858966177409) internal successors, (8229), 6268 states have internal predecessors, (8229), 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 06:33:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6272 states to 6272 states and 8232 transitions. [2023-04-02 06:33:16,343 INFO L78 Accepts]: Start accepts. Automaton has 6272 states and 8232 transitions. Word has length 129 [2023-04-02 06:33:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:33:16,343 INFO L495 AbstractCegarLoop]: Abstraction has 6272 states and 8232 transitions. [2023-04-02 06:33:16,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-04-02 06:33:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6272 states and 8232 transitions. [2023-04-02 06:33:16,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-02 06:33:16,346 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:33:16,346 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-04-02 06:33:16,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-04-02 06:33:16,346 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 06:33:16,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:33:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2116439410, now seen corresponding path program 1 times [2023-04-02 06:33:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:33:16,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722601536] [2023-04-02 06:33:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:33:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:33:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:33:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:33:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 06:33:16,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:33:16,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722601536] [2023-04-02 06:33:16,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722601536] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:33:16,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:33:16,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:33:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754586967] [2023-04-02 06:33:16,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:33:16,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:33:16,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:33:16,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:33:16,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:33:16,964 INFO L87 Difference]: Start difference. First operand 6272 states and 8232 transitions. Second operand has 13 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 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 06:33:52,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:33:52,691 INFO L93 Difference]: Finished difference Result 34117 states and 44447 transitions. [2023-04-02 06:33:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 06:33:52,691 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 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 130 [2023-04-02 06:33:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:33:52,748 INFO L225 Difference]: With dead ends: 34117 [2023-04-02 06:33:52,748 INFO L226 Difference]: Without dead ends: 27917 [2023-04-02 06:33:52,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:33:52,766 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 2706 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:33:52,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2706 Valid, 1077 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:33:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27917 states. [2023-04-02 06:34:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27917 to 6276. [2023-04-02 06:34:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6276 states, 6272 states have (on average 1.3126594387755102) internal successors, (8233), 6272 states have internal predecessors, (8233), 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 06:34:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6276 states to 6276 states and 8236 transitions. [2023-04-02 06:34:00,636 INFO L78 Accepts]: Start accepts. Automaton has 6276 states and 8236 transitions. Word has length 130 [2023-04-02 06:34:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:34:00,637 INFO L495 AbstractCegarLoop]: Abstraction has 6276 states and 8236 transitions. [2023-04-02 06:34:00,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.916666666666666) internal successors, (119), 11 states have internal predecessors, (119), 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 06:34:00,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6276 states and 8236 transitions. [2023-04-02 06:34:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 06:34:00,639 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:34:00,639 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-04-02 06:34:00,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-04-02 06:34:00,639 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 06:34:00,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:34:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1879030761, now seen corresponding path program 1 times [2023-04-02 06:34:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:34:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339087611] [2023-04-02 06:34:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:34:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:34:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:34:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:34:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 06:34:01,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:34:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339087611] [2023-04-02 06:34:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339087611] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:34:01,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:34:01,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:34:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993504202] [2023-04-02 06:34:01,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:34:01,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:34:01,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:34:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:34:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:34:01,053 INFO L87 Difference]: Start difference. First operand 6276 states and 8236 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 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)