/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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:48:38,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:48:38,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:48:38,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:48:38,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:48:38,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:48:38,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:48:38,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:48:38,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:48:38,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:48:38,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:48:38,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:48:38,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:48:38,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:48:38,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:48:38,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:48:38,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:48:38,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:48:38,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:48:38,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:48:38,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:48:38,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:48:38,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:48:38,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:48:38,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:48:38,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:48:38,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:48:38,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:48:38,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:48:38,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:48:38,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:48:38,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:48:38,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:48:38,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:48:38,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:48:38,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:48:38,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:48:38,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:48:38,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:48:38,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:48:38,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:48:38,084 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 05:48:38,102 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:48:38,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:48:38,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:48:38,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:48:38,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:48:38,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:48:38,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:48:38,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:48:38,104 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:48:38,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:48:38,104 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:48:38,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:48:38,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:48:38,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:48:38,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:48:38,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:48:38,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:48:38,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:48:38,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:48:38,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:48:38,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:48:38,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:48:38,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:48:38,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:48:38,106 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:48:38,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:48:38,107 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:48:38,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:48:38,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:48:38,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:48:38,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:48:38,367 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:48:38,367 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:48:38,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 05:48:39,446 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:48:39,683 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:48:39,684 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 05:48:39,705 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e906120bd/0cf3a9008f154d7ba6b686f8c158450d/FLAG1174a19d3 [2023-04-02 05:48:39,719 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e906120bd/0cf3a9008f154d7ba6b686f8c158450d [2023-04-02 05:48:39,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:48:39,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:48:39,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:48:39,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:48:39,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:48:39,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:48:39" (1/1) ... [2023-04-02 05:48:39,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb85874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:39, skipping insertion in model container [2023-04-02 05:48:39,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:48:39" (1/1) ... [2023-04-02 05:48:39,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:48:39,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:48:40,284 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31348,31361] [2023-04-02 05:48:40,314 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[32238,32251] [2023-04-02 05:48:40,328 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33897,33910] [2023-04-02 05:48:40,336 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34787,34800] [2023-04-02 05:48:40,368 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37218,37231] [2023-04-02 05:48:40,378 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38111,38124] [2023-04-02 05:48:40,391 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39773,39786] [2023-04-02 05:48:40,407 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[41134,41147] [2023-04-02 05:48:40,506 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54998,55011] [2023-04-02 05:48:40,514 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55891,55904] [2023-04-02 05:48:40,529 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57553,57566] [2023-04-02 05:48:40,594 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61710,61723] [2023-04-02 05:48:40,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:48:40,719 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:48:40,932 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[31348,31361] [2023-04-02 05:48:40,940 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[32238,32251] [2023-04-02 05:48:40,951 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[33897,33910] [2023-04-02 05:48:40,958 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[34787,34800] [2023-04-02 05:48:40,973 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[37218,37231] [2023-04-02 05:48:40,980 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[38111,38124] [2023-04-02 05:48:40,992 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[39773,39786] [2023-04-02 05:48:41,001 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[41134,41147] [2023-04-02 05:48:41,073 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[54998,55011] [2023-04-02 05:48:41,081 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[55891,55904] [2023-04-02 05:48:41,092 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[57553,57566] [2023-04-02 05:48:41,115 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_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[61710,61723] [2023-04-02 05:48:41,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:48:41,185 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:48:41,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41 WrapperNode [2023-04-02 05:48:41,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:48:41,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:48:41,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:48:41,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:48:41,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:48:41,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:48:41,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:48:41,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:48:41,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (1/1) ... [2023-04-02 05:48:41,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:48:41,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:48:41,389 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 05:48:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:48:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:48:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:48:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:48:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:48:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:48:41,426 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 05:48:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:48:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:48:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:48:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:48:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:48:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:48:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:48:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:48:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:48:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:48:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:48:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:48:41,631 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:48:41,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:48:43,333 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:48:43,348 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:48:43,348 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 05:48:43,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:48:43 BoogieIcfgContainer [2023-04-02 05:48:43,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:48:43,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:48:43,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:48:43,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:48:43,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:48:39" (1/3) ... [2023-04-02 05:48:43,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b67ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:48:43, skipping insertion in model container [2023-04-02 05:48:43,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:41" (2/3) ... [2023-04-02 05:48:43,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b67ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:48:43, skipping insertion in model container [2023-04-02 05:48:43,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:48:43" (3/3) ... [2023-04-02 05:48:43,359 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-02 05:48:43,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:48:43,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-04-02 05:48:43,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:48:43,445 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;@115d893b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:48:43,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-04-02 05:48:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 905 states, 881 states have (on average 1.8274687854710556) internal successors, (1610), 900 states have internal predecessors, (1610), 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 05:48:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-04-02 05:48:43,479 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:43,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:43,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:48:43,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:43,485 INFO L85 PathProgramCache]: Analyzing trace with hash -108349351, now seen corresponding path program 1 times [2023-04-02 05:48:43,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:43,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629487061] [2023-04-02 05:48:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:43,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:44,736 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 05:48:44,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:44,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629487061] [2023-04-02 05:48:44,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629487061] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:44,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:44,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:44,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287210760] [2023-04-02 05:48:44,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:44,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:44,777 INFO L87 Difference]: Start difference. First operand has 905 states, 881 states have (on average 1.8274687854710556) internal successors, (1610), 900 states have internal predecessors, (1610), 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 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 05:48:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:49,028 INFO L93 Difference]: Finished difference Result 1586 states and 2797 transitions. [2023-04-02 05:48:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:49,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 290 [2023-04-02 05:48:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:49,054 INFO L225 Difference]: With dead ends: 1586 [2023-04-02 05:48:49,055 INFO L226 Difference]: Without dead ends: 1324 [2023-04-02 05:48:49,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:49,060 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 882 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:49,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 2909 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-02 05:48:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2023-04-02 05:48:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1322. [2023-04-02 05:48:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1307 states have (on average 1.5439938791124712) internal successors, (2018), 1318 states have internal predecessors, (2018), 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 05:48:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 2021 transitions. [2023-04-02 05:48:49,154 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 2021 transitions. Word has length 290 [2023-04-02 05:48:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:49,155 INFO L495 AbstractCegarLoop]: Abstraction has 1322 states and 2021 transitions. [2023-04-02 05:48:49,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 05:48:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 2021 transitions. [2023-04-02 05:48:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-04-02 05:48:49,159 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:49,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:49,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:48:49,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:48:49,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash -450023655, now seen corresponding path program 1 times [2023-04-02 05:48:49,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898927880] [2023-04-02 05:48:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:49,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:49,903 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 05:48:49,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:49,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898927880] [2023-04-02 05:48:49,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898927880] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:49,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:49,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836835820] [2023-04-02 05:48:49,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:49,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:49,906 INFO L87 Difference]: Start difference. First operand 1322 states and 2021 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 05:48:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:53,594 INFO L93 Difference]: Finished difference Result 2553 states and 3934 transitions. [2023-04-02 05:48:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:53,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 290 [2023-04-02 05:48:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:53,605 INFO L225 Difference]: With dead ends: 2553 [2023-04-02 05:48:53,606 INFO L226 Difference]: Without dead ends: 2238 [2023-04-02 05:48:53,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:53,612 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 747 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:53,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 2476 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 05:48:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2023-04-02 05:48:53,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2236. [2023-04-02 05:48:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2221 states have (on average 1.5466006303466906) internal successors, (3435), 2232 states have internal predecessors, (3435), 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 05:48:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3438 transitions. [2023-04-02 05:48:53,676 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3438 transitions. Word has length 290 [2023-04-02 05:48:53,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:53,677 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3438 transitions. [2023-04-02 05:48:53,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 05:48:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3438 transitions. [2023-04-02 05:48:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-04-02 05:48:53,682 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:53,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:53,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:48:53,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:48:53,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash -450362279, now seen corresponding path program 1 times [2023-04-02 05:48:53,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:53,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951756692] [2023-04-02 05:48:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:53,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:54,786 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 05:48:54,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:54,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951756692] [2023-04-02 05:48:54,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951756692] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:54,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658483543] [2023-04-02 05:48:54,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:54,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:54,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:54,790 INFO L87 Difference]: Start difference. First operand 2236 states and 3438 transitions. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 4 states have internal predecessors, (287), 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 05:48:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:59,670 INFO L93 Difference]: Finished difference Result 6611 states and 10159 transitions. [2023-04-02 05:48:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:59,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 4 states have internal predecessors, (287), 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 290 [2023-04-02 05:48:59,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:59,684 INFO L225 Difference]: With dead ends: 6611 [2023-04-02 05:48:59,684 INFO L226 Difference]: Without dead ends: 4390 [2023-04-02 05:48:59,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:59,688 INFO L413 NwaCegarLoop]: 2330 mSDtfsCounter, 2873 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:59,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2873 Valid, 3624 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-02 05:48:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2023-04-02 05:48:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4222. [2023-04-02 05:48:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4222 states, 4207 states have (on average 1.5381507012122653) internal successors, (6471), 4218 states have internal predecessors, (6471), 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 05:48:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 6474 transitions. [2023-04-02 05:48:59,844 INFO L78 Accepts]: Start accepts. Automaton has 4222 states and 6474 transitions. Word has length 290 [2023-04-02 05:48:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:59,844 INFO L495 AbstractCegarLoop]: Abstraction has 4222 states and 6474 transitions. [2023-04-02 05:48:59,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 4 states have internal predecessors, (287), 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 05:48:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4222 states and 6474 transitions. [2023-04-02 05:48:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-04-02 05:48:59,852 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:59,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:48:59,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:48:59,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:48:59,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1142616668, now seen corresponding path program 1 times [2023-04-02 05:48:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:59,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938179549] [2023-04-02 05:48:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:59,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:00,461 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 05:49:00,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:00,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938179549] [2023-04-02 05:49:00,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938179549] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:00,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:00,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:49:00,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281508249] [2023-04-02 05:49:00,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:00,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:49:00,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:00,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:49:00,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:00,467 INFO L87 Difference]: Start difference. First operand 4222 states and 6474 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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 05:49:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:05,736 INFO L93 Difference]: Finished difference Result 12621 states and 19351 transitions. [2023-04-02 05:49:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:49:05,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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 292 [2023-04-02 05:49:05,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:05,790 INFO L225 Difference]: With dead ends: 12621 [2023-04-02 05:49:05,791 INFO L226 Difference]: Without dead ends: 8424 [2023-04-02 05:49:05,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:05,797 INFO L413 NwaCegarLoop]: 2688 mSDtfsCounter, 1340 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 4034 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:05,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 4034 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2697 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-02 05:49:05,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8424 states. [2023-04-02 05:49:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8424 to 4235. [2023-04-02 05:49:06,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 4220 states have (on average 1.537914691943128) internal successors, (6490), 4231 states have internal predecessors, (6490), 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 05:49:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 6493 transitions. [2023-04-02 05:49:06,032 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 6493 transitions. Word has length 292 [2023-04-02 05:49:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:06,033 INFO L495 AbstractCegarLoop]: Abstraction has 4235 states and 6493 transitions. [2023-04-02 05:49:06,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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 05:49:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 6493 transitions. [2023-04-02 05:49:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-04-02 05:49:06,041 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:06,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:06,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:49:06,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:49:06,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1650537879, now seen corresponding path program 1 times [2023-04-02 05:49:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:06,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661341990] [2023-04-02 05:49:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:06,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:06,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:06,635 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 05:49:06,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661341990] [2023-04-02 05:49:06,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661341990] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:06,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:06,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:49:06,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728269932] [2023-04-02 05:49:06,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:06,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:49:06,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:49:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:06,637 INFO L87 Difference]: Start difference. First operand 4235 states and 6493 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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 05:49:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:12,257 INFO L93 Difference]: Finished difference Result 12404 states and 18978 transitions. [2023-04-02 05:49:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:49:12,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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 292 [2023-04-02 05:49:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:12,285 INFO L225 Difference]: With dead ends: 12404 [2023-04-02 05:49:12,285 INFO L226 Difference]: Without dead ends: 8311 [2023-04-02 05:49:12,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:12,292 INFO L413 NwaCegarLoop]: 2583 mSDtfsCounter, 1227 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2622 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:12,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 3883 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2622 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-02 05:49:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2023-04-02 05:49:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 8143. [2023-04-02 05:49:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8143 states, 8128 states have (on average 1.5291584645669292) internal successors, (12429), 8139 states have internal predecessors, (12429), 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 05:49:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8143 states to 8143 states and 12432 transitions. [2023-04-02 05:49:12,731 INFO L78 Accepts]: Start accepts. Automaton has 8143 states and 12432 transitions. Word has length 292 [2023-04-02 05:49:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:12,732 INFO L495 AbstractCegarLoop]: Abstraction has 8143 states and 12432 transitions. [2023-04-02 05:49:12,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 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 05:49:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 8143 states and 12432 transitions. [2023-04-02 05:49:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-04-02 05:49:12,743 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:12,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:49:12,743 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:49:12,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1670082169, now seen corresponding path program 1 times [2023-04-02 05:49:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:12,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755320967] [2023-04-02 05:49:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:12,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:13,283 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 05:49:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755320967] [2023-04-02 05:49:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755320967] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:13,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:49:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772132568] [2023-04-02 05:49:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:13,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:49:13,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:49:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:13,285 INFO L87 Difference]: Start difference. First operand 8143 states and 12432 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 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 05:49:18,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:18,840 INFO L93 Difference]: Finished difference Result 24316 states and 37109 transitions. [2023-04-02 05:49:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:49:18,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 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 293 [2023-04-02 05:49:18,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:18,869 INFO L225 Difference]: With dead ends: 24316 [2023-04-02 05:49:18,869 INFO L226 Difference]: Without dead ends: 16233 [2023-04-02 05:49:18,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:18,883 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 1335 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:18,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 4033 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 05:49:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16233 states. [2023-04-02 05:49:19,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16233 to 8161. [2023-04-02 05:49:19,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8161 states, 8146 states have (on average 1.5283574760618708) internal successors, (12450), 8157 states have internal predecessors, (12450), 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 05:49:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8161 states to 8161 states and 12453 transitions. [2023-04-02 05:49:19,427 INFO L78 Accepts]: Start accepts. Automaton has 8161 states and 12453 transitions. Word has length 293 [2023-04-02 05:49:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:19,428 INFO L495 AbstractCegarLoop]: Abstraction has 8161 states and 12453 transitions. [2023-04-02 05:49:19,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 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 05:49:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 8161 states and 12453 transitions. [2023-04-02 05:49:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-02 05:49:19,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:19,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:19,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:49:19,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:49:19,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:19,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1643831282, now seen corresponding path program 1 times [2023-04-02 05:49:19,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:19,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550343302] [2023-04-02 05:49:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:19,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:19,999 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 05:49:20,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550343302] [2023-04-02 05:49:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550343302] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:20,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:20,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:49:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942035856] [2023-04-02 05:49:20,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:20,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:49:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:49:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:20,003 INFO L87 Difference]: Start difference. First operand 8161 states and 12453 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 05:49:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:25,770 INFO L93 Difference]: Finished difference Result 23844 states and 36296 transitions. [2023-04-02 05:49:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:49:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 294 [2023-04-02 05:49:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:25,802 INFO L225 Difference]: With dead ends: 23844 [2023-04-02 05:49:25,803 INFO L226 Difference]: Without dead ends: 15928 [2023-04-02 05:49:25,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:25,818 INFO L413 NwaCegarLoop]: 2644 mSDtfsCounter, 1220 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:25,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 3944 Invalid, 2707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2683 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 05:49:25,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15928 states. [2023-04-02 05:49:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15928 to 15760. [2023-04-02 05:49:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15760 states, 15745 states have (on average 1.5175611305176246) internal successors, (23894), 15756 states have internal predecessors, (23894), 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 05:49:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15760 states to 15760 states and 23897 transitions. [2023-04-02 05:49:26,859 INFO L78 Accepts]: Start accepts. Automaton has 15760 states and 23897 transitions. Word has length 294 [2023-04-02 05:49:26,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:26,859 INFO L495 AbstractCegarLoop]: Abstraction has 15760 states and 23897 transitions. [2023-04-02 05:49:26,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 05:49:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 15760 states and 23897 transitions. [2023-04-02 05:49:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-04-02 05:49:26,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:26,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:49:26,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:49:26,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash -68135409, now seen corresponding path program 1 times [2023-04-02 05:49:26,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:26,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437343857] [2023-04-02 05:49:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:26,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:27,755 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 05:49:27,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437343857] [2023-04-02 05:49:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437343857] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:27,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:49:27,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559938862] [2023-04-02 05:49:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:27,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:49:27,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:49:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:27,756 INFO L87 Difference]: Start difference. First operand 15760 states and 23897 transitions. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 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 05:49:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:34,248 INFO L93 Difference]: Finished difference Result 46346 states and 70148 transitions. [2023-04-02 05:49:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:49:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 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 294 [2023-04-02 05:49:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:34,307 INFO L225 Difference]: With dead ends: 46346 [2023-04-02 05:49:34,308 INFO L226 Difference]: Without dead ends: 30645 [2023-04-02 05:49:34,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:34,336 INFO L413 NwaCegarLoop]: 2262 mSDtfsCounter, 2603 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 4828 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2603 Valid, 4828 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 05:49:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30645 states. [2023-04-02 05:49:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30645 to 30489. [2023-04-02 05:49:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30489 states, 30474 states have (on average 1.503281485856796) internal successors, (45811), 30485 states have internal predecessors, (45811), 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 05:49:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30489 states to 30489 states and 45814 transitions. [2023-04-02 05:49:36,563 INFO L78 Accepts]: Start accepts. Automaton has 30489 states and 45814 transitions. Word has length 294 [2023-04-02 05:49:36,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:36,564 INFO L495 AbstractCegarLoop]: Abstraction has 30489 states and 45814 transitions. [2023-04-02 05:49:36,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 5 states have internal predecessors, (291), 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 05:49:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 30489 states and 45814 transitions. [2023-04-02 05:49:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-04-02 05:49:36,603 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:36,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:36,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:49:36,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:49:36,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 806770585, now seen corresponding path program 1 times [2023-04-02 05:49:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031705793] [2023-04-02 05:49:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:37,539 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 05:49:37,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:37,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031705793] [2023-04-02 05:49:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031705793] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:37,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:49:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278416775] [2023-04-02 05:49:37,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:37,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:49:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:49:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:49:37,541 INFO L87 Difference]: Start difference. First operand 30489 states and 45814 transitions. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 4 states have internal predecessors, (293), 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 05:49:46,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:46,653 INFO L93 Difference]: Finished difference Result 90033 states and 135142 transitions. [2023-04-02 05:49:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:49:46,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 4 states have internal predecessors, (293), 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 296 [2023-04-02 05:49:46,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:46,773 INFO L225 Difference]: With dead ends: 90033 [2023-04-02 05:49:46,773 INFO L226 Difference]: Without dead ends: 59745 [2023-04-02 05:49:46,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:46,822 INFO L413 NwaCegarLoop]: 2313 mSDtfsCounter, 2820 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:46,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2820 Valid, 3611 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-02 05:49:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59745 states. [2023-04-02 05:49:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59745 to 59569. [2023-04-02 05:49:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59569 states, 59554 states have (on average 1.4929979514390301) internal successors, (88914), 59565 states have internal predecessors, (88914), 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 05:49:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59569 states to 59569 states and 88917 transitions. [2023-04-02 05:49:51,919 INFO L78 Accepts]: Start accepts. Automaton has 59569 states and 88917 transitions. Word has length 296 [2023-04-02 05:49:51,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:51,924 INFO L495 AbstractCegarLoop]: Abstraction has 59569 states and 88917 transitions. [2023-04-02 05:49:51,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 4 states have internal predecessors, (293), 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 05:49:51,924 INFO L276 IsEmpty]: Start isEmpty. Operand 59569 states and 88917 transitions. [2023-04-02 05:49:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-04-02 05:49:52,002 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:52,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:49:52,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:49:52,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:49:52,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1076748082, now seen corresponding path program 1 times [2023-04-02 05:49:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:52,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200874769] [2023-04-02 05:49:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:52,579 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 05:49:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200874769] [2023-04-02 05:49:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200874769] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:52,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:52,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:49:52,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2991344] [2023-04-02 05:49:52,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:52,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:49:52,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:49:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:52,582 INFO L87 Difference]: Start difference. First operand 59569 states and 88917 transitions. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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 05:50:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:06,985 INFO L93 Difference]: Finished difference Result 175539 states and 261591 transitions. [2023-04-02 05:50:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:50:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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 298 [2023-04-02 05:50:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:07,218 INFO L225 Difference]: With dead ends: 175539 [2023-04-02 05:50:07,218 INFO L226 Difference]: Without dead ends: 116867 [2023-04-02 05:50:07,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:50:07,294 INFO L413 NwaCegarLoop]: 2584 mSDtfsCounter, 1203 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:07,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 3888 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 05:50:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116867 states. [2023-04-02 05:50:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116867 to 116691. [2023-04-02 05:50:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116691 states, 116676 states have (on average 1.4831156364633686) internal successors, (173044), 116687 states have internal predecessors, (173044), 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 05:50:17,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116691 states to 116691 states and 173047 transitions. [2023-04-02 05:50:17,587 INFO L78 Accepts]: Start accepts. Automaton has 116691 states and 173047 transitions. Word has length 298 [2023-04-02 05:50:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:17,588 INFO L495 AbstractCegarLoop]: Abstraction has 116691 states and 173047 transitions. [2023-04-02 05:50:17,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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 05:50:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 116691 states and 173047 transitions. [2023-04-02 05:50:17,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-04-02 05:50:17,707 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:17,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:17,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:50:17,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:50:17,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1807095123, now seen corresponding path program 1 times [2023-04-02 05:50:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:17,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037999904] [2023-04-02 05:50:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:17,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:18,435 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 05:50:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037999904] [2023-04-02 05:50:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037999904] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:18,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:18,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:50:18,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038709056] [2023-04-02 05:50:18,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:18,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:50:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:50:18,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:50:18,437 INFO L87 Difference]: Start difference. First operand 116691 states and 173047 transitions. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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 05:50:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:44,205 INFO L93 Difference]: Finished difference Result 349269 states and 517827 transitions. [2023-04-02 05:50:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:50:44,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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 298 [2023-04-02 05:50:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:44,694 INFO L225 Difference]: With dead ends: 349269 [2023-04-02 05:50:44,695 INFO L226 Difference]: Without dead ends: 233025 [2023-04-02 05:50:44,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:50:44,825 INFO L413 NwaCegarLoop]: 2655 mSDtfsCounter, 1307 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 2668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:44,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 4001 Invalid, 2668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2664 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-02 05:50:45,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233025 states. [2023-04-02 05:50:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233025 to 116881. [2023-04-02 05:50:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116881 states, 116866 states have (on average 1.4831003029110263) internal successors, (173324), 116877 states have internal predecessors, (173324), 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 05:50:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116881 states to 116881 states and 173327 transitions. [2023-04-02 05:50:58,437 INFO L78 Accepts]: Start accepts. Automaton has 116881 states and 173327 transitions. Word has length 298 [2023-04-02 05:50:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:58,439 INFO L495 AbstractCegarLoop]: Abstraction has 116881 states and 173327 transitions. [2023-04-02 05:50:58,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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 05:50:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 116881 states and 173327 transitions. [2023-04-02 05:50:58,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-04-02 05:50:58,616 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:58,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:50:58,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:50:58,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:50:58,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:58,623 INFO L85 PathProgramCache]: Analyzing trace with hash -621148900, now seen corresponding path program 1 times [2023-04-02 05:50:58,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:58,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538567362] [2023-04-02 05:50:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:59,167 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 05:50:59,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538567362] [2023-04-02 05:50:59,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538567362] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:59,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:59,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:50:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846198922] [2023-04-02 05:50:59,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:59,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:50:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:59,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:50:59,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:50:59,411 INFO L87 Difference]: Start difference. First operand 116881 states and 173327 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 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 05:51:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:51:28,218 INFO L93 Difference]: Finished difference Result 349381 states and 517905 transitions. [2023-04-02 05:51:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:51:28,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 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 299 [2023-04-02 05:51:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:51:28,727 INFO L225 Difference]: With dead ends: 349381 [2023-04-02 05:51:28,728 INFO L226 Difference]: Without dead ends: 233187 [2023-04-02 05:51:28,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:51:28,873 INFO L413 NwaCegarLoop]: 2655 mSDtfsCounter, 1302 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 2668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:51:28,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 4001 Invalid, 2668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2664 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-02 05:51:29,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233187 states. [2023-04-02 05:51:42,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233187 to 117043. [2023-04-02 05:51:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117043 states, 117028 states have (on average 1.4826366339679393) internal successors, (173510), 117039 states have internal predecessors, (173510), 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 05:51:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117043 states to 117043 states and 173513 transitions. [2023-04-02 05:51:42,772 INFO L78 Accepts]: Start accepts. Automaton has 117043 states and 173513 transitions. Word has length 299 [2023-04-02 05:51:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:51:42,773 INFO L495 AbstractCegarLoop]: Abstraction has 117043 states and 173513 transitions. [2023-04-02 05:51:42,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 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 05:51:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 117043 states and 173513 transitions. [2023-04-02 05:51:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-04-02 05:51:43,125 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:51:43,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:51:43,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:51:43,126 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-04-02 05:51:43,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:51:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash 457222377, now seen corresponding path program 1 times [2023-04-02 05:51:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:51:43,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482187218] [2023-04-02 05:51:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:51:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:51:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:43,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:51:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:43,740 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 05:51:43,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:51:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482187218] [2023-04-02 05:51:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482187218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:51:43,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:51:43,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:51:43,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54310030] [2023-04-02 05:51:43,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:51:43,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:51:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:51:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:51:43,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:51:43,742 INFO L87 Difference]: Start difference. First operand 117043 states and 173513 transitions. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 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)