/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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 02:02:31,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 02:02:31,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 02:02:31,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 02:02:31,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 02:02:31,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 02:02:31,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 02:02:31,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 02:02:31,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 02:02:31,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 02:02:31,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 02:02:31,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 02:02:31,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 02:02:31,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 02:02:31,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 02:02:31,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 02:02:31,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 02:02:31,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 02:02:31,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 02:02:31,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 02:02:31,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 02:02:31,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 02:02:31,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 02:02:31,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 02:02:31,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 02:02:31,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 02:02:31,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 02:02:31,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 02:02:31,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 02:02:31,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 02:02:31,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 02:02:31,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 02:02:31,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 02:02:31,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 02:02:31,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 02:02:31,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 02:02:31,162 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 [2023-03-31 02:02:31,180 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 02:02:31,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 02:02:31,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 02:02:31,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 02:02:31,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 02:02:31,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 02:02:31,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 02:02:31,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 02:02:31,183 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 02:02:31,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 02:02:31,183 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 02:02:31,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 02:02:31,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 02:02:31,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 02:02:31,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 02:02:31,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 02:02:31,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 02:02:31,184 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 02:02:31,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 02:02:31,184 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 02:02:31,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 02:02:31,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 02:02:31,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 02:02:31,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 02:02:31,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:02:31,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 02:02:31,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 02:02:31,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 02:02:31,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 02:02:31,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 02:02:31,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 02:02:31,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 02:02:31,186 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 02:02:31,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 02:02:31,186 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 02:02:31,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 02:02:31,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 02:02:31,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 02:02:31,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 02:02:31,394 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 02:02:31,394 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 02:02:31,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 02:02:32,590 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 02:02:32,919 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 02:02:32,920 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 02:02:32,942 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb2f5bb7/67aca828c8514eeaab3c3de43a68a5b5/FLAG06ddf8475 [2023-03-31 02:02:32,960 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb2f5bb7/67aca828c8514eeaab3c3de43a68a5b5 [2023-03-31 02:02:32,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 02:02:32,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 02:02:32,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 02:02:32,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 02:02:32,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 02:02:32,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:02:32" (1/1) ... [2023-03-31 02:02:32,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a26879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:32, skipping insertion in model container [2023-03-31 02:02:32,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:02:32" (1/1) ... [2023-03-31 02:02:32,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 02:02:33,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 02:02:33,686 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34347,34360] [2023-03-31 02:02:33,714 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35237,35250] [2023-03-31 02:02:33,733 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37067,37080] [2023-03-31 02:02:33,745 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37957,37970] [2023-03-31 02:02:33,771 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40730,40743] [2023-03-31 02:02:33,785 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41623,41636] [2023-03-31 02:02:33,808 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[43456,43469] [2023-03-31 02:02:33,827 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[44733,44746] [2023-03-31 02:02:33,941 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60386,60399] [2023-03-31 02:02:33,955 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61279,61292] [2023-03-31 02:02:33,978 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63112,63125] [2023-03-31 02:02:34,040 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67569,67582] [2023-03-31 02:02:34,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:02:34,176 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 02:02:34,394 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34347,34360] [2023-03-31 02:02:34,405 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35237,35250] [2023-03-31 02:02:34,423 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37067,37080] [2023-03-31 02:02:34,436 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37957,37970] [2023-03-31 02:02:34,459 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40730,40743] [2023-03-31 02:02:34,478 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[41623,41636] [2023-03-31 02:02:34,497 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[43456,43469] [2023-03-31 02:02:34,515 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[44733,44746] [2023-03-31 02:02:34,628 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60386,60399] [2023-03-31 02:02:34,640 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[61279,61292] [2023-03-31 02:02:34,660 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63112,63125] [2023-03-31 02:02:34,702 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_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67569,67582] [2023-03-31 02:02:34,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:02:34,830 INFO L208 MainTranslator]: Completed translation [2023-03-31 02:02:34,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34 WrapperNode [2023-03-31 02:02:34,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 02:02:34,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 02:02:34,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 02:02:34,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 02:02:34,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:34,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:34,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:34,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:34,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:34,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:34,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:35,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:35,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 02:02:35,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 02:02:35,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 02:02:35,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 02:02:35,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (1/1) ... [2023-03-31 02:02:35,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:02:35,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 02:02:35,058 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) [2023-03-31 02:02:35,082 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 [2023-03-31 02:02:35,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 02:02:35,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 02:02:35,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 02:02:35,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 02:02:35,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 02:02:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 02:02:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 02:02:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 02:02:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 02:02:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 02:02:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 02:02:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 02:02:35,102 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 02:02:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 02:02:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 02:02:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 02:02:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 02:02:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 02:02:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 02:02:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 02:02:35,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 02:02:35,356 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 02:02:35,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 02:02:37,451 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 02:02:37,470 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 02:02:37,471 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 02:02:37,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:02:37 BoogieIcfgContainer [2023-03-31 02:02:37,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 02:02:37,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 02:02:37,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 02:02:37,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 02:02:37,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 02:02:32" (1/3) ... [2023-03-31 02:02:37,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19574333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:02:37, skipping insertion in model container [2023-03-31 02:02:37,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:34" (2/3) ... [2023-03-31 02:02:37,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19574333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:02:37, skipping insertion in model container [2023-03-31 02:02:37,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:02:37" (3/3) ... [2023-03-31 02:02:37,490 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 02:02:37,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 02:02:37,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-03-31 02:02:37,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 02:02:37,577 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;@252de9cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 02:02:37,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-03-31 02:02:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 1004 states, 980 states have (on average 1.8173469387755101) internal successors, (1781), 999 states have internal predecessors, (1781), 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) [2023-03-31 02:02:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:37,616 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:37,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:37,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr11ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-03-31 02:02:37,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:37,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1173287097, now seen corresponding path program 1 times [2023-03-31 02:02:37,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:37,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537588086] [2023-03-31 02:02:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:37,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:39,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:39,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537588086] [2023-03-31 02:02:39,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537588086] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:39,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:39,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272563406] [2023-03-31 02:02:39,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:39,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:39,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:39,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:39,330 INFO L87 Difference]: Start difference. First operand has 1004 states, 980 states have (on average 1.8173469387755101) internal successors, (1781), 999 states have internal predecessors, (1781), 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 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-03-31 02:02:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:44,992 INFO L93 Difference]: Finished difference Result 1758 states and 3083 transitions. [2023-03-31 02:02:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:44,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-03-31 02:02:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:45,023 INFO L225 Difference]: With dead ends: 1758 [2023-03-31 02:02:45,023 INFO L226 Difference]: Without dead ends: 1429 [2023-03-31 02:02:45,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:45,037 INFO L413 NwaCegarLoop]: 1979 mSDtfsCounter, 968 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:45,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 3278 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-03-31 02:02:45,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2023-03-31 02:02:45,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1427. [2023-03-31 02:02:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1412 states have (on average 1.5325779036827196) internal successors, (2164), 1423 states have internal predecessors, (2164), 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) [2023-03-31 02:02:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2167 transitions. [2023-03-31 02:02:45,163 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2167 transitions. Word has length 320 [2023-03-31 02:02:45,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:45,169 INFO L495 AbstractCegarLoop]: Abstraction has 1427 states and 2167 transitions. [2023-03-31 02:02:45,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-03-31 02:02:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2167 transitions. [2023-03-31 02:02:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:45,181 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:45,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:45,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 02:02:45,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-03-31 02:02:45,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1018284073, now seen corresponding path program 1 times [2023-03-31 02:02:45,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:45,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854901225] [2023-03-31 02:02:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:45,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:46,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:46,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854901225] [2023-03-31 02:02:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854901225] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:46,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382119871] [2023-03-31 02:02:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:46,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:46,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:46,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:46,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:46,066 INFO L87 Difference]: Start difference. First operand 1427 states and 2167 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-03-31 02:02:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:50,848 INFO L93 Difference]: Finished difference Result 2734 states and 4187 transitions. [2023-03-31 02:02:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-03-31 02:02:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:50,858 INFO L225 Difference]: With dead ends: 2734 [2023-03-31 02:02:50,859 INFO L226 Difference]: Without dead ends: 2301 [2023-03-31 02:02:50,861 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 [2023-03-31 02:02:50,862 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 788 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:50,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 2775 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-03-31 02:02:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-03-31 02:02:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2299. [2023-03-31 02:02:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2284 states have (on average 1.5332749562171628) internal successors, (3502), 2295 states have internal predecessors, (3502), 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) [2023-03-31 02:02:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3505 transitions. [2023-03-31 02:02:50,942 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3505 transitions. Word has length 320 [2023-03-31 02:02:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:50,943 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 3505 transitions. [2023-03-31 02:02:50,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-03-31 02:02:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3505 transitions. [2023-03-31 02:02:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:50,949 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:50,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:50,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 02:02:50,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-03-31 02:02:50,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:50,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1531908903, now seen corresponding path program 1 times [2023-03-31 02:02:50,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162046650] [2023-03-31 02:02:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:51,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:51,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162046650] [2023-03-31 02:02:51,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162046650] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:51,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:51,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:51,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358955033] [2023-03-31 02:02:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:51,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:51,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:51,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:51,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:51,778 INFO L87 Difference]: Start difference. First operand 2299 states and 3505 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-03-31 02:02:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:56,088 INFO L93 Difference]: Finished difference Result 4766 states and 7338 transitions. [2023-03-31 02:02:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:56,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-03-31 02:02:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:56,110 INFO L225 Difference]: With dead ends: 4766 [2023-03-31 02:02:56,110 INFO L226 Difference]: Without dead ends: 4097 [2023-03-31 02:02:56,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:56,115 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 856 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:56,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2763 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-03-31 02:02:56,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2023-03-31 02:02:56,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 4095. [2023-03-31 02:02:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4095 states, 4080 states have (on average 1.5338235294117648) internal successors, (6258), 4091 states have internal predecessors, (6258), 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) [2023-03-31 02:02:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 6261 transitions. [2023-03-31 02:02:56,250 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 6261 transitions. Word has length 320 [2023-03-31 02:02:56,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:56,251 INFO L495 AbstractCegarLoop]: Abstraction has 4095 states and 6261 transitions. [2023-03-31 02:02:56,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-03-31 02:02:56,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 6261 transitions. [2023-03-31 02:02:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:56,260 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:56,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:56,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 02:02:56,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-03-31 02:02:56,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1531570279, now seen corresponding path program 1 times [2023-03-31 02:02:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012221894] [2023-03-31 02:02:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:56,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:57,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012221894] [2023-03-31 02:02:57,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012221894] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:57,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:57,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:02:57,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616880408] [2023-03-31 02:02:57,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:57,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:02:57,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:02:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:57,683 INFO L87 Difference]: Start difference. First operand 4095 states and 6261 transitions. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 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) [2023-03-31 02:03:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:03,309 INFO L93 Difference]: Finished difference Result 12142 states and 18544 transitions. [2023-03-31 02:03:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:03:03,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 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 320 [2023-03-31 02:03:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:03,343 INFO L225 Difference]: With dead ends: 12142 [2023-03-31 02:03:03,344 INFO L226 Difference]: Without dead ends: 8062 [2023-03-31 02:03:03,351 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 [2023-03-31 02:03:03,352 INFO L413 NwaCegarLoop]: 2447 mSDtfsCounter, 3305 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3305 SdHoareTripleChecker+Valid, 3882 SdHoareTripleChecker+Invalid, 2565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:03,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3305 Valid, 3882 Invalid, 2565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2537 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-03-31 02:03:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8062 states. [2023-03-31 02:03:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8062 to 7891. [2023-03-31 02:03:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7891 states, 7876 states have (on average 1.5272981208735399) internal successors, (12029), 7887 states have internal predecessors, (12029), 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) [2023-03-31 02:03:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7891 states to 7891 states and 12032 transitions. [2023-03-31 02:03:03,694 INFO L78 Accepts]: Start accepts. Automaton has 7891 states and 12032 transitions. Word has length 320 [2023-03-31 02:03:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:03,694 INFO L495 AbstractCegarLoop]: Abstraction has 7891 states and 12032 transitions. [2023-03-31 02:03:03,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 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) [2023-03-31 02:03:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 7891 states and 12032 transitions. [2023-03-31 02:03:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-03-31 02:03:03,715 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:03,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:03:03,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 02:03:03,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-03-31 02:03:03,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash -921782580, now seen corresponding path program 1 times [2023-03-31 02:03:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908124867] [2023-03-31 02:03:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908124867] [2023-03-31 02:03:04,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908124867] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:04,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:04,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268088752] [2023-03-31 02:03:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:04,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:04,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:04,360 INFO L87 Difference]: Start difference. First operand 7891 states and 12032 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-03-31 02:03:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:10,475 INFO L93 Difference]: Finished difference Result 23628 states and 36025 transitions. [2023-03-31 02:03:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:03:10,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 322 [2023-03-31 02:03:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:10,526 INFO L225 Difference]: With dead ends: 23628 [2023-03-31 02:03:10,526 INFO L226 Difference]: Without dead ends: 15762 [2023-03-31 02:03:10,545 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 [2023-03-31 02:03:10,546 INFO L413 NwaCegarLoop]: 2966 mSDtfsCounter, 1479 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 4451 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:10,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 4451 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2975 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-03-31 02:03:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15762 states. [2023-03-31 02:03:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15762 to 7904. [2023-03-31 02:03:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7904 states, 7889 states have (on average 1.5271897578907339) internal successors, (12048), 7900 states have internal predecessors, (12048), 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) [2023-03-31 02:03:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7904 states to 7904 states and 12051 transitions. [2023-03-31 02:03:11,175 INFO L78 Accepts]: Start accepts. Automaton has 7904 states and 12051 transitions. Word has length 322 [2023-03-31 02:03:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:11,175 INFO L495 AbstractCegarLoop]: Abstraction has 7904 states and 12051 transitions. [2023-03-31 02:03:11,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-03-31 02:03:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 7904 states and 12051 transitions. [2023-03-31 02:03:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-03-31 02:03:11,191 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:11,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:03:11,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 02:03:11,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-03-31 02:03:11,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash -421273401, now seen corresponding path program 1 times [2023-03-31 02:03:11,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:11,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797269432] [2023-03-31 02:03:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:11,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797269432] [2023-03-31 02:03:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797269432] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058214037] [2023-03-31 02:03:11,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:11,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:11,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:11,838 INFO L87 Difference]: Start difference. First operand 7904 states and 12051 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-03-31 02:03:18,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:18,028 INFO L93 Difference]: Finished difference Result 23241 states and 35360 transitions. [2023-03-31 02:03:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:03:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 322 [2023-03-31 02:03:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:18,062 INFO L225 Difference]: With dead ends: 23241 [2023-03-31 02:03:18,062 INFO L226 Difference]: Without dead ends: 15479 [2023-03-31 02:03:18,080 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 [2023-03-31 02:03:18,082 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 1350 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 2946 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:18,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 4338 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2946 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-03-31 02:03:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15479 states. [2023-03-31 02:03:18,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15479 to 15308. [2023-03-31 02:03:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15308 states, 15293 states have (on average 1.5182109461845288) internal successors, (23218), 15304 states have internal predecessors, (23218), 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) [2023-03-31 02:03:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15308 states to 15308 states and 23221 transitions. [2023-03-31 02:03:18,887 INFO L78 Accepts]: Start accepts. Automaton has 15308 states and 23221 transitions. Word has length 322 [2023-03-31 02:03:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:18,887 INFO L495 AbstractCegarLoop]: Abstraction has 15308 states and 23221 transitions. [2023-03-31 02:03:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-03-31 02:03:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15308 states and 23221 transitions. [2023-03-31 02:03:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-03-31 02:03:18,913 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:18,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:03:18,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 02:03:18,914 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-03-31 02:03:18,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2075547389, now seen corresponding path program 1 times [2023-03-31 02:03:18,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:18,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295644672] [2023-03-31 02:03:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:18,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:19,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:03:19,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:19,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295644672] [2023-03-31 02:03:19,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295644672] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:19,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:19,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061602071] [2023-03-31 02:03:19,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:19,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:19,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:19,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:19,548 INFO L87 Difference]: Start difference. First operand 15308 states and 23221 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-03-31 02:03:26,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:26,408 INFO L93 Difference]: Finished difference Result 45811 states and 69476 transitions. [2023-03-31 02:03:26,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:03:26,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 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 323 [2023-03-31 02:03:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:26,481 INFO L225 Difference]: With dead ends: 45811 [2023-03-31 02:03:26,482 INFO L226 Difference]: Without dead ends: 30563 [2023-03-31 02:03:26,518 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 [2023-03-31 02:03:26,519 INFO L413 NwaCegarLoop]: 2965 mSDtfsCounter, 1474 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 4450 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:26,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 4450 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2974 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-03-31 02:03:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30563 states. [2023-03-31 02:03:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30563 to 15326. [2023-03-31 02:03:27,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15326 states, 15311 states have (on average 1.5177976618117692) internal successors, (23239), 15322 states have internal predecessors, (23239), 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) [2023-03-31 02:03:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15326 states to 15326 states and 23242 transitions. [2023-03-31 02:03:27,699 INFO L78 Accepts]: Start accepts. Automaton has 15326 states and 23242 transitions. Word has length 323 [2023-03-31 02:03:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:27,699 INFO L495 AbstractCegarLoop]: Abstraction has 15326 states and 23242 transitions. [2023-03-31 02:03:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-03-31 02:03:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15326 states and 23242 transitions. [2023-03-31 02:03:27,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-03-31 02:03:27,730 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:27,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:03:27,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 02:03:27,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-03-31 02:03:27,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:27,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1712330018, now seen corresponding path program 1 times [2023-03-31 02:03:27,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:27,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331176406] [2023-03-31 02:03:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:27,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat