/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:22:12,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:22:12,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:22:12,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:22:12,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:22:12,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:22:12,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:22:12,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:22:12,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:22:12,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:22:12,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:22:12,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:22:12,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:22:12,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:22:12,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:22:12,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:22:12,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:22:12,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:22:12,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:22:12,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:22:12,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:22:12,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:22:12,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:22:12,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:22:12,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:22:12,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:22:12,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:22:12,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:22:12,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:22:12,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:22:12,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:22:12,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:22:12,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:22:12,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:22:12,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:22:12,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:22:12,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:22:12,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:22:12,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:22:12,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:22:12,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:22:12,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:22:12,172 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:22:12,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:22:12,173 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:22:12,173 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:22:12,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:22:12,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:22:12,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:22:12,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:22:12,175 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:22:12,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:22:12,176 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:22:12,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:22:12,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:22:12,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:22:12,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:22:12,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:22:12,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:22:12,177 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:22:12,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:22:12,177 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:22:12,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:22:12,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:22:12,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:22:12,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:22:12,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:22:12,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:22:12,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:22:12,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:22:12,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:22:12,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:22:12,179 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:22:12,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:22:12,179 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:22:12,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:22:12,179 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:22:12,180 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:22:12,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:22:12,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:22:12,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:22:12,430 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:22:12,430 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:22:12,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 06:22:13,516 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:22:13,749 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:22:13,750 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 06:22:13,761 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf287c8f/439adfb12ba44cd89ee14d23ebdff51f/FLAG1c8b7bee6 [2023-04-02 06:22:13,775 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cf287c8f/439adfb12ba44cd89ee14d23ebdff51f [2023-04-02 06:22:13,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:22:13,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:22:13,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:22:13,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:22:13,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:22:13,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:22:13" (1/1) ... [2023-04-02 06:22:13,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4829a245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:13, skipping insertion in model container [2023-04-02 06:22:13,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:22:13" (1/1) ... [2023-04-02 06:22:13,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:22:13,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:22:14,023 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7545,7558] [2023-04-02 06:22:14,043 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10452,10465] [2023-04-02 06:22:14,051 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11543,11556] [2023-04-02 06:22:14,054 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12149,12162] [2023-04-02 06:22:14,061 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13568,13581] [2023-04-02 06:22:14,065 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14174,14187] [2023-04-02 06:22:14,071 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15145,15158] [2023-04-02 06:22:14,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:22:14,145 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:22:14,199 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7545,7558] [2023-04-02 06:22:14,208 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10452,10465] [2023-04-02 06:22:14,221 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11543,11556] [2023-04-02 06:22:14,224 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12149,12162] [2023-04-02 06:22:14,228 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13568,13581] [2023-04-02 06:22:14,231 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14174,14187] [2023-04-02 06:22:14,234 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15145,15158] [2023-04-02 06:22:14,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:22:14,282 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:22:14,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14 WrapperNode [2023-04-02 06:22:14,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:22:14,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:22:14,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:22:14,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:22:14,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:22:14,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:22:14,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:22:14,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:22:14,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (1/1) ... [2023-04-02 06:22:14,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:22:14,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:22:14,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:22:14,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:22:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:22:14,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:22:14,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:22:14,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:22:14,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:22:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:22:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:22:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:22:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:22:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:22:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:22:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:22:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:22:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:22:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:22:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:22:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:22:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:22:14,635 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:22:14,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:22:15,374 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:22:15,386 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:22:15,386 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:22:15,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:22:15 BoogieIcfgContainer [2023-04-02 06:22:15,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:22:15,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:22:15,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:22:15,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:22:15,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:22:13" (1/3) ... [2023-04-02 06:22:15,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eaca67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:22:15, skipping insertion in model container [2023-04-02 06:22:15,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:22:14" (2/3) ... [2023-04-02 06:22:15,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eaca67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:22:15, skipping insertion in model container [2023-04-02 06:22:15,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:22:15" (3/3) ... [2023-04-02 06:22:15,399 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2023-04-02 06:22:15,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:22:15,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-02 06:22:15,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:22:15,467 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;@6415f185, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:22:15,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-02 06:22:15,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 200 states have (on average 1.82) internal successors, (364), 208 states have internal predecessors, (364), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:22:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-02 06:22:15,491 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:15,491 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] [2023-04-02 06:22:15,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:15,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash -594872832, now seen corresponding path program 1 times [2023-04-02 06:22:15,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:15,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30549755] [2023-04-02 06:22:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30549755] [2023-04-02 06:22:16,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30549755] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:16,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:16,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:22:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117997118] [2023-04-02 06:22:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:16,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:22:16,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:22:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:22:16,299 INFO L87 Difference]: Start difference. First operand has 213 states, 200 states have (on average 1.82) internal successors, (364), 208 states have internal predecessors, (364), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:17,338 INFO L93 Difference]: Finished difference Result 349 states and 578 transitions. [2023-04-02 06:22:17,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:17,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2023-04-02 06:22:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:17,349 INFO L225 Difference]: With dead ends: 349 [2023-04-02 06:22:17,350 INFO L226 Difference]: Without dead ends: 181 [2023-04-02 06:22:17,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:22:17,356 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 850 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:17,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 249 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:22:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-04-02 06:22:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-04-02 06:22:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 171 states have (on average 1.2690058479532165) internal successors, (217), 177 states have internal predecessors, (217), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 220 transitions. [2023-04-02 06:22:17,406 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 220 transitions. Word has length 51 [2023-04-02 06:22:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:17,407 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 220 transitions. [2023-04-02 06:22:17,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 220 transitions. [2023-04-02 06:22:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-02 06:22:17,409 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:17,409 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] [2023-04-02 06:22:17,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:22:17,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:17,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:17,410 INFO L85 PathProgramCache]: Analyzing trace with hash 371764749, now seen corresponding path program 1 times [2023-04-02 06:22:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:17,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830239302] [2023-04-02 06:22:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:17,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:17,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:17,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830239302] [2023-04-02 06:22:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830239302] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:17,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:22:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580062720] [2023-04-02 06:22:17,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:17,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:22:17,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:17,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:22:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:22:17,744 INFO L87 Difference]: Start difference. First operand 181 states and 220 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:18,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:18,317 INFO L93 Difference]: Finished difference Result 303 states and 378 transitions. [2023-04-02 06:22:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:18,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-04-02 06:22:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:18,322 INFO L225 Difference]: With dead ends: 303 [2023-04-02 06:22:18,322 INFO L226 Difference]: Without dead ends: 171 [2023-04-02 06:22:18,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:22:18,328 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 556 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:18,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 138 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:22:18,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-04-02 06:22:18,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-04-02 06:22:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 161 states have (on average 1.2670807453416149) internal successors, (204), 167 states have internal predecessors, (204), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 207 transitions. [2023-04-02 06:22:18,351 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 207 transitions. Word has length 52 [2023-04-02 06:22:18,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:18,351 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 207 transitions. [2023-04-02 06:22:18,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 207 transitions. [2023-04-02 06:22:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-02 06:22:18,353 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:18,353 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] [2023-04-02 06:22:18,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:22:18,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:18,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash 511879490, now seen corresponding path program 1 times [2023-04-02 06:22:18,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:18,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83783634] [2023-04-02 06:22:18,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:18,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:18,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83783634] [2023-04-02 06:22:18,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83783634] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:18,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:18,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:22:18,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975809617] [2023-04-02 06:22:18,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:18,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:22:18,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:22:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:22:18,680 INFO L87 Difference]: Start difference. First operand 171 states and 207 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:19,278 INFO L93 Difference]: Finished difference Result 376 states and 472 transitions. [2023-04-02 06:22:19,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:19,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2023-04-02 06:22:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:19,281 INFO L225 Difference]: With dead ends: 376 [2023-04-02 06:22:19,282 INFO L226 Difference]: Without dead ends: 243 [2023-04-02 06:22:19,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:22:19,284 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 755 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:19,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 189 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:22:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-04-02 06:22:19,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2023-04-02 06:22:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 209 states have (on average 1.3205741626794258) internal successors, (276), 215 states have internal predecessors, (276), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 279 transitions. [2023-04-02 06:22:19,312 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 279 transitions. Word has length 53 [2023-04-02 06:22:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:19,312 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 279 transitions. [2023-04-02 06:22:19,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 279 transitions. [2023-04-02 06:22:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 06:22:19,314 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:19,314 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] [2023-04-02 06:22:19,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:22:19,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:19,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1148094681, now seen corresponding path program 1 times [2023-04-02 06:22:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:19,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932541373] [2023-04-02 06:22:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:19,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:19,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932541373] [2023-04-02 06:22:19,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932541373] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:19,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:19,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 06:22:19,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874874599] [2023-04-02 06:22:19,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:19,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:22:19,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:19,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:22:19,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:22:19,919 INFO L87 Difference]: Start difference. First operand 219 states and 279 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:20,703 INFO L93 Difference]: Finished difference Result 459 states and 598 transitions. [2023-04-02 06:22:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:22:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-04-02 06:22:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:20,707 INFO L225 Difference]: With dead ends: 459 [2023-04-02 06:22:20,707 INFO L226 Difference]: Without dead ends: 337 [2023-04-02 06:22:20,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:22:20,714 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 1208 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:20,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 296 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:22:20,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-04-02 06:22:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 219. [2023-04-02 06:22:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 209 states have (on average 1.3157894736842106) internal successors, (275), 215 states have internal predecessors, (275), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 278 transitions. [2023-04-02 06:22:20,760 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 278 transitions. Word has length 54 [2023-04-02 06:22:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:20,761 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 278 transitions. [2023-04-02 06:22:20,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 278 transitions. [2023-04-02 06:22:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 06:22:20,762 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:20,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:22:20,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:22:20,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:20,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:20,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1625805454, now seen corresponding path program 1 times [2023-04-02 06:22:20,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:20,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413528559] [2023-04-02 06:22:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:20,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:21,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:21,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413528559] [2023-04-02 06:22:21,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413528559] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:21,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:21,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:22:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415846583] [2023-04-02 06:22:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:21,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:22:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:22:21,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:22:21,201 INFO L87 Difference]: Start difference. First operand 219 states and 278 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:22,137 INFO L93 Difference]: Finished difference Result 449 states and 604 transitions. [2023-04-02 06:22:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:22:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-04-02 06:22:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:22,140 INFO L225 Difference]: With dead ends: 449 [2023-04-02 06:22:22,140 INFO L226 Difference]: Without dead ends: 350 [2023-04-02 06:22:22,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:22:22,141 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1054 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:22,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 495 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:22:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-04-02 06:22:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 219. [2023-04-02 06:22:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 209 states have (on average 1.3110047846889952) internal successors, (274), 215 states have internal predecessors, (274), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 277 transitions. [2023-04-02 06:22:22,171 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 277 transitions. Word has length 54 [2023-04-02 06:22:22,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:22,173 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 277 transitions. [2023-04-02 06:22:22,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 277 transitions. [2023-04-02 06:22:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-02 06:22:22,177 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:22,177 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] [2023-04-02 06:22:22,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:22:22,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:22,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:22,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2111729042, now seen corresponding path program 1 times [2023-04-02 06:22:22,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:22,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457602681] [2023-04-02 06:22:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:22,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:22,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457602681] [2023-04-02 06:22:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457602681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:22,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:22,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:22:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550511969] [2023-04-02 06:22:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:22:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:22:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:22:22,626 INFO L87 Difference]: Start difference. First operand 219 states and 277 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:23,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:23,693 INFO L93 Difference]: Finished difference Result 528 states and 706 transitions. [2023-04-02 06:22:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:22:23,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-04-02 06:22:23,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:23,697 INFO L225 Difference]: With dead ends: 528 [2023-04-02 06:22:23,698 INFO L226 Difference]: Without dead ends: 523 [2023-04-02 06:22:23,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:22:23,699 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1074 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:23,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 699 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:22:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-04-02 06:22:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 219. [2023-04-02 06:22:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 209 states have (on average 1.30622009569378) internal successors, (273), 215 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 276 transitions. [2023-04-02 06:22:23,729 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 276 transitions. Word has length 54 [2023-04-02 06:22:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:23,730 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 276 transitions. [2023-04-02 06:22:23,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 276 transitions. [2023-04-02 06:22:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:22:23,731 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:23,731 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] [2023-04-02 06:22:23,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:22:23,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:23,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash 493112010, now seen corresponding path program 1 times [2023-04-02 06:22:23,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:23,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353956066] [2023-04-02 06:22:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:23,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:24,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:24,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353956066] [2023-04-02 06:22:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353956066] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:24,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-02 06:22:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541410636] [2023-04-02 06:22:24,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:24,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 06:22:24,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:24,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 06:22:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-04-02 06:22:24,997 INFO L87 Difference]: Start difference. First operand 219 states and 276 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:27,210 INFO L93 Difference]: Finished difference Result 467 states and 615 transitions. [2023-04-02 06:22:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 06:22:27,210 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 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 56 [2023-04-02 06:22:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:27,212 INFO L225 Difference]: With dead ends: 467 [2023-04-02 06:22:27,212 INFO L226 Difference]: Without dead ends: 381 [2023-04-02 06:22:27,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 06:22:27,214 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1134 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:27,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1823 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:22:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-04-02 06:22:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 225. [2023-04-02 06:22:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 215 states have (on average 1.3069767441860465) internal successors, (281), 221 states have internal predecessors, (281), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 284 transitions. [2023-04-02 06:22:27,244 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 284 transitions. Word has length 56 [2023-04-02 06:22:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:27,245 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 284 transitions. [2023-04-02 06:22:27,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 284 transitions. [2023-04-02 06:22:27,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:22:27,246 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:27,246 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] [2023-04-02 06:22:27,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:22:27,246 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:27,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1790629557, now seen corresponding path program 1 times [2023-04-02 06:22:27,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:27,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725696405] [2023-04-02 06:22:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:27,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:27,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:27,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:27,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725696405] [2023-04-02 06:22:27,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725696405] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:27,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:27,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:22:27,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834533590] [2023-04-02 06:22:27,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:27,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:22:27,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:22:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:22:27,905 INFO L87 Difference]: Start difference. First operand 225 states and 284 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:29,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:29,387 INFO L93 Difference]: Finished difference Result 439 states and 591 transitions. [2023-04-02 06:22:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:22:29,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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 56 [2023-04-02 06:22:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:29,389 INFO L225 Difference]: With dead ends: 439 [2023-04-02 06:22:29,389 INFO L226 Difference]: Without dead ends: 346 [2023-04-02 06:22:29,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:22:29,390 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 730 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:29,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1288 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:22:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-04-02 06:22:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 214. [2023-04-02 06:22:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 210 states have internal predecessors, (268), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 271 transitions. [2023-04-02 06:22:29,429 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 271 transitions. Word has length 56 [2023-04-02 06:22:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:29,429 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 271 transitions. [2023-04-02 06:22:29,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 271 transitions. [2023-04-02 06:22:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 06:22:29,430 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:29,430 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] [2023-04-02 06:22:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:22:29,431 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:29,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1142812502, now seen corresponding path program 1 times [2023-04-02 06:22:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:29,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473446435] [2023-04-02 06:22:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:30,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473446435] [2023-04-02 06:22:30,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473446435] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:30,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:30,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-02 06:22:30,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860157099] [2023-04-02 06:22:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:30,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 06:22:30,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 06:22:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-04-02 06:22:30,444 INFO L87 Difference]: Start difference. First operand 214 states and 271 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:32,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:32,571 INFO L93 Difference]: Finished difference Result 383 states and 492 transitions. [2023-04-02 06:22:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 06:22:32,572 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 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 56 [2023-04-02 06:22:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:32,573 INFO L225 Difference]: With dead ends: 383 [2023-04-02 06:22:32,574 INFO L226 Difference]: Without dead ends: 379 [2023-04-02 06:22:32,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=271, Invalid=1211, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 06:22:32,575 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1075 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:32,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 1775 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:22:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-04-02 06:22:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 218. [2023-04-02 06:22:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 209 states have (on average 1.3110047846889952) internal successors, (274), 214 states have internal predecessors, (274), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 277 transitions. [2023-04-02 06:22:32,615 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 277 transitions. Word has length 56 [2023-04-02 06:22:32,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:32,615 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 277 transitions. [2023-04-02 06:22:32,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 277 transitions. [2023-04-02 06:22:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:22:32,616 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:32,616 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] [2023-04-02 06:22:32,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:22:32,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:32,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1879692811, now seen corresponding path program 1 times [2023-04-02 06:22:32,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:32,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649742374] [2023-04-02 06:22:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:32,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:33,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:33,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649742374] [2023-04-02 06:22:33,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649742374] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:33,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:33,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:22:33,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726980934] [2023-04-02 06:22:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:33,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:22:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:33,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:22:33,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:22:33,182 INFO L87 Difference]: Start difference. First operand 218 states and 277 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:34,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:34,462 INFO L93 Difference]: Finished difference Result 456 states and 614 transitions. [2023-04-02 06:22:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:22:34,463 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 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 57 [2023-04-02 06:22:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:34,465 INFO L225 Difference]: With dead ends: 456 [2023-04-02 06:22:34,465 INFO L226 Difference]: Without dead ends: 436 [2023-04-02 06:22:34,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:22:34,466 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 943 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:34,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1428 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:22:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-04-02 06:22:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 198. [2023-04-02 06:22:34,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.3036649214659686) internal successors, (249), 194 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 252 transitions. [2023-04-02 06:22:34,509 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 252 transitions. Word has length 57 [2023-04-02 06:22:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:34,509 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 252 transitions. [2023-04-02 06:22:34,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 252 transitions. [2023-04-02 06:22:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:22:34,510 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:34,510 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] [2023-04-02 06:22:34,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:22:34,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:34,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1347438915, now seen corresponding path program 1 times [2023-04-02 06:22:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243646008] [2023-04-02 06:22:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:34,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:35,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:35,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:35,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243646008] [2023-04-02 06:22:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243646008] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:35,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:35,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:22:35,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894851241] [2023-04-02 06:22:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:35,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:22:35,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:22:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:22:35,070 INFO L87 Difference]: Start difference. First operand 198 states and 252 transitions. Second operand has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:36,828 INFO L93 Difference]: Finished difference Result 970 states and 1340 transitions. [2023-04-02 06:22:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 06:22:36,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-04-02 06:22:36,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:36,832 INFO L225 Difference]: With dead ends: 970 [2023-04-02 06:22:36,833 INFO L226 Difference]: Without dead ends: 963 [2023-04-02 06:22:36,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 06:22:36,834 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 2459 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2459 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:36,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2459 Valid, 743 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:22:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-04-02 06:22:36,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 198. [2023-04-02 06:22:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 191 states have (on average 1.2984293193717278) internal successors, (248), 194 states have internal predecessors, (248), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 251 transitions. [2023-04-02 06:22:36,891 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 251 transitions. Word has length 57 [2023-04-02 06:22:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:36,891 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 251 transitions. [2023-04-02 06:22:36,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 251 transitions. [2023-04-02 06:22:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:22:36,892 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:36,892 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] [2023-04-02 06:22:36,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:22:36,893 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:36,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1660687578, now seen corresponding path program 1 times [2023-04-02 06:22:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804421829] [2023-04-02 06:22:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:36,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:37,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:37,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804421829] [2023-04-02 06:22:37,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804421829] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:37,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:37,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:22:37,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879388347] [2023-04-02 06:22:37,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:37,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:22:37,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:37,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:22:37,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:22:37,441 INFO L87 Difference]: Start difference. First operand 198 states and 251 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:38,484 INFO L93 Difference]: Finished difference Result 418 states and 549 transitions. [2023-04-02 06:22:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:22:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 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 57 [2023-04-02 06:22:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:38,486 INFO L225 Difference]: With dead ends: 418 [2023-04-02 06:22:38,486 INFO L226 Difference]: Without dead ends: 332 [2023-04-02 06:22:38,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:22:38,487 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 890 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:38,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 683 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:22:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-04-02 06:22:38,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 192. [2023-04-02 06:22:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 186 states have (on average 1.2903225806451613) internal successors, (240), 188 states have internal predecessors, (240), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 243 transitions. [2023-04-02 06:22:38,536 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 243 transitions. Word has length 57 [2023-04-02 06:22:38,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:38,536 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 243 transitions. [2023-04-02 06:22:38,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:38,537 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 243 transitions. [2023-04-02 06:22:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 06:22:38,537 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:38,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:22:38,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:22:38,538 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:38,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:38,538 INFO L85 PathProgramCache]: Analyzing trace with hash -514255037, now seen corresponding path program 1 times [2023-04-02 06:22:38,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:38,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471341846] [2023-04-02 06:22:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471341846] [2023-04-02 06:22:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471341846] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:38,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:38,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:22:38,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755628980] [2023-04-02 06:22:38,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:38,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:22:38,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:22:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:22:38,886 INFO L87 Difference]: Start difference. First operand 192 states and 243 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:39,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:39,545 INFO L93 Difference]: Finished difference Result 307 states and 401 transitions. [2023-04-02 06:22:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:22:39,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-04-02 06:22:39,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:39,546 INFO L225 Difference]: With dead ends: 307 [2023-04-02 06:22:39,547 INFO L226 Difference]: Without dead ends: 195 [2023-04-02 06:22:39,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-04-02 06:22:39,547 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 312 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:39,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 319 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:22:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-04-02 06:22:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2023-04-02 06:22:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 186 states have (on average 1.2795698924731183) internal successors, (238), 188 states have internal predecessors, (238), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 241 transitions. [2023-04-02 06:22:39,601 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 241 transitions. Word has length 57 [2023-04-02 06:22:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:39,601 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 241 transitions. [2023-04-02 06:22:39,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 241 transitions. [2023-04-02 06:22:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 06:22:39,602 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:39,602 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] [2023-04-02 06:22:39,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:22:39,602 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:39,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash -995838873, now seen corresponding path program 1 times [2023-04-02 06:22:39,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196934377] [2023-04-02 06:22:39,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:39,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:39,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:39,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196934377] [2023-04-02 06:22:39,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196934377] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:39,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:39,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:22:39,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72544611] [2023-04-02 06:22:39,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:39,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:22:39,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:39,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:22:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:22:39,977 INFO L87 Difference]: Start difference. First operand 192 states and 241 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:40,803 INFO L93 Difference]: Finished difference Result 327 states and 418 transitions. [2023-04-02 06:22:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:22:40,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-04-02 06:22:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:40,805 INFO L225 Difference]: With dead ends: 327 [2023-04-02 06:22:40,805 INFO L226 Difference]: Without dead ends: 320 [2023-04-02 06:22:40,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:22:40,806 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 325 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:40,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 572 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:22:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-04-02 06:22:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 188. [2023-04-02 06:22:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 182 states have (on average 1.2802197802197801) internal successors, (233), 184 states have internal predecessors, (233), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2023-04-02 06:22:40,854 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 58 [2023-04-02 06:22:40,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:40,854 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2023-04-02 06:22:40,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2023-04-02 06:22:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:22:40,855 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:40,855 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] [2023-04-02 06:22:40,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:22:40,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:40,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:40,856 INFO L85 PathProgramCache]: Analyzing trace with hash -512043110, now seen corresponding path program 1 times [2023-04-02 06:22:40,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:40,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716599393] [2023-04-02 06:22:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:40,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:41,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:41,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716599393] [2023-04-02 06:22:41,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716599393] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:41,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:41,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 06:22:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727989268] [2023-04-02 06:22:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:41,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:22:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:22:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:22:41,361 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:42,682 INFO L93 Difference]: Finished difference Result 454 states and 615 transitions. [2023-04-02 06:22:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 06:22:42,683 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 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 59 [2023-04-02 06:22:42,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:42,685 INFO L225 Difference]: With dead ends: 454 [2023-04-02 06:22:42,685 INFO L226 Difference]: Without dead ends: 436 [2023-04-02 06:22:42,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-04-02 06:22:42,686 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 885 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:42,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 696 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:22:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-04-02 06:22:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 170. [2023-04-02 06:22:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.290909090909091) internal successors, (213), 166 states have internal predecessors, (213), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2023-04-02 06:22:42,749 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 59 [2023-04-02 06:22:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:42,749 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2023-04-02 06:22:42,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2023-04-02 06:22:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-02 06:22:42,750 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:42,750 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] [2023-04-02 06:22:42,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:22:42,750 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:42,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash 367827498, now seen corresponding path program 1 times [2023-04-02 06:22:42,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:42,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171164675] [2023-04-02 06:22:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:42,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:43,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:43,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:43,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171164675] [2023-04-02 06:22:43,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171164675] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:43,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:43,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 06:22:43,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974328743] [2023-04-02 06:22:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:43,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 06:22:43,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 06:22:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:22:43,563 INFO L87 Difference]: Start difference. First operand 170 states and 216 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:45,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:45,114 INFO L93 Difference]: Finished difference Result 360 states and 484 transitions. [2023-04-02 06:22:45,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 06:22:45,114 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 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 59 [2023-04-02 06:22:45,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:45,116 INFO L225 Difference]: With dead ends: 360 [2023-04-02 06:22:45,117 INFO L226 Difference]: Without dead ends: 354 [2023-04-02 06:22:45,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=223, Invalid=967, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 06:22:45,118 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 468 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:45,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1539 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:22:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-04-02 06:22:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 176. [2023-04-02 06:22:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.2923976608187135) internal successors, (221), 172 states have internal predecessors, (221), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 224 transitions. [2023-04-02 06:22:45,188 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 224 transitions. Word has length 59 [2023-04-02 06:22:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:45,188 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 224 transitions. [2023-04-02 06:22:45,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 224 transitions. [2023-04-02 06:22:45,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 06:22:45,189 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:45,189 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] [2023-04-02 06:22:45,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:22:45,189 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:45,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:45,190 INFO L85 PathProgramCache]: Analyzing trace with hash -455608065, now seen corresponding path program 1 times [2023-04-02 06:22:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246688721] [2023-04-02 06:22:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:45,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:45,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:45,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246688721] [2023-04-02 06:22:45,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246688721] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:45,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:45,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:22:45,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755279835] [2023-04-02 06:22:45,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:45,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 06:22:45,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 06:22:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-04-02 06:22:45,818 INFO L87 Difference]: Start difference. First operand 176 states and 224 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:47,419 INFO L93 Difference]: Finished difference Result 470 states and 635 transitions. [2023-04-02 06:22:47,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:22:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 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 60 [2023-04-02 06:22:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:47,421 INFO L225 Difference]: With dead ends: 470 [2023-04-02 06:22:47,421 INFO L226 Difference]: Without dead ends: 464 [2023-04-02 06:22:47,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-04-02 06:22:47,422 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 687 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:47,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1428 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:22:47,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-04-02 06:22:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 164. [2023-04-02 06:22:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.2875) internal successors, (206), 160 states have internal predecessors, (206), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2023-04-02 06:22:47,497 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 60 [2023-04-02 06:22:47,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:47,497 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2023-04-02 06:22:47,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:47,497 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2023-04-02 06:22:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 06:22:47,498 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:47,498 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] [2023-04-02 06:22:47,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:22:47,498 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:47,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:47,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1755484625, now seen corresponding path program 1 times [2023-04-02 06:22:47,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:47,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61793613] [2023-04-02 06:22:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:47,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61793613] [2023-04-02 06:22:47,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61793613] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:47,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:47,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:22:47,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403872136] [2023-04-02 06:22:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:47,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:22:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:47,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:22:47,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:22:47,703 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:48,379 INFO L93 Difference]: Finished difference Result 656 states and 929 transitions. [2023-04-02 06:22:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 06:22:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 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 77 [2023-04-02 06:22:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:48,382 INFO L225 Difference]: With dead ends: 656 [2023-04-02 06:22:48,382 INFO L226 Difference]: Without dead ends: 574 [2023-04-02 06:22:48,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:22:48,383 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 472 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:48,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 604 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:22:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-04-02 06:22:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 244. [2023-04-02 06:22:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 240 states have (on average 1.3458333333333334) internal successors, (323), 240 states have internal predecessors, (323), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 326 transitions. [2023-04-02 06:22:48,504 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 326 transitions. Word has length 77 [2023-04-02 06:22:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:48,505 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 326 transitions. [2023-04-02 06:22:48,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 326 transitions. [2023-04-02 06:22:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:22:48,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:48,506 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] [2023-04-02 06:22:48,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:22:48,506 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:48,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash -765407760, now seen corresponding path program 1 times [2023-04-02 06:22:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774183860] [2023-04-02 06:22:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:48,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:48,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:48,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:48,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774183860] [2023-04-02 06:22:48,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774183860] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:48,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:48,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:22:48,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317437346] [2023-04-02 06:22:48,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:48,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:22:48,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:22:48,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:22:48,735 INFO L87 Difference]: Start difference. First operand 244 states and 326 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:49,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:49,461 INFO L93 Difference]: Finished difference Result 812 states and 1155 transitions. [2023-04-02 06:22:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:49,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:22:49,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:49,464 INFO L225 Difference]: With dead ends: 812 [2023-04-02 06:22:49,464 INFO L226 Difference]: Without dead ends: 650 [2023-04-02 06:22:49,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:22:49,465 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 274 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:49,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 425 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:22:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-04-02 06:22:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 324. [2023-04-02 06:22:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 320 states have (on average 1.375) internal successors, (440), 320 states have internal predecessors, (440), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 443 transitions. [2023-04-02 06:22:49,630 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 443 transitions. Word has length 79 [2023-04-02 06:22:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:49,630 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 443 transitions. [2023-04-02 06:22:49,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 443 transitions. [2023-04-02 06:22:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:22:49,631 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:49,631 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] [2023-04-02 06:22:49,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:22:49,631 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:49,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:49,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1313810588, now seen corresponding path program 1 times [2023-04-02 06:22:49,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:49,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638375183] [2023-04-02 06:22:49,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:49,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:49,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:49,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:49,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638375183] [2023-04-02 06:22:49,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638375183] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:49,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:49,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:22:49,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244311454] [2023-04-02 06:22:49,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:49,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:22:49,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:22:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:22:49,840 INFO L87 Difference]: Start difference. First operand 324 states and 443 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:50,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:50,635 INFO L93 Difference]: Finished difference Result 892 states and 1272 transitions. [2023-04-02 06:22:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:50,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:22:50,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:50,638 INFO L225 Difference]: With dead ends: 892 [2023-04-02 06:22:50,638 INFO L226 Difference]: Without dead ends: 730 [2023-04-02 06:22:50,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:22:50,639 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 284 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:50,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 440 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:22:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-04-02 06:22:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 484. [2023-04-02 06:22:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 480 states have (on average 1.4041666666666666) internal successors, (674), 480 states have internal predecessors, (674), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 677 transitions. [2023-04-02 06:22:50,867 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 677 transitions. Word has length 79 [2023-04-02 06:22:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:50,867 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 677 transitions. [2023-04-02 06:22:50,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 677 transitions. [2023-04-02 06:22:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:22:50,868 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:50,868 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] [2023-04-02 06:22:50,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:22:50,869 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:50,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1335154477, now seen corresponding path program 1 times [2023-04-02 06:22:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:50,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802263426] [2023-04-02 06:22:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:50,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:51,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802263426] [2023-04-02 06:22:51,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802263426] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:51,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:51,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:22:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149806218] [2023-04-02 06:22:51,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:51,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:22:51,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:22:51,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:22:51,144 INFO L87 Difference]: Start difference. First operand 484 states and 677 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:51,743 INFO L93 Difference]: Finished difference Result 1048 states and 1500 transitions. [2023-04-02 06:22:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:51,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:22:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:51,746 INFO L225 Difference]: With dead ends: 1048 [2023-04-02 06:22:51,746 INFO L226 Difference]: Without dead ends: 646 [2023-04-02 06:22:51,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:22:51,747 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 56 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:51,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 299 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:22:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-04-02 06:22:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 644. [2023-04-02 06:22:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 640 states have (on average 1.40625) internal successors, (900), 640 states have internal predecessors, (900), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 903 transitions. [2023-04-02 06:22:52,061 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 903 transitions. Word has length 79 [2023-04-02 06:22:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:52,061 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 903 transitions. [2023-04-02 06:22:52,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 903 transitions. [2023-04-02 06:22:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:22:52,063 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:52,063 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] [2023-04-02 06:22:52,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:22:52,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:52,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2074894798, now seen corresponding path program 1 times [2023-04-02 06:22:52,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:52,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207148453] [2023-04-02 06:22:52,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:52,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:52,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207148453] [2023-04-02 06:22:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207148453] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:52,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:52,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:22:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046293157] [2023-04-02 06:22:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:22:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:22:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:22:52,235 INFO L87 Difference]: Start difference. First operand 644 states and 903 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:52,685 INFO L93 Difference]: Finished difference Result 1214 states and 1725 transitions. [2023-04-02 06:22:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:22:52,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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 79 [2023-04-02 06:22:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:52,690 INFO L225 Difference]: With dead ends: 1214 [2023-04-02 06:22:52,690 INFO L226 Difference]: Without dead ends: 638 [2023-04-02 06:22:52,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:22:52,692 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:52,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 06:22:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-04-02 06:22:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2023-04-02 06:22:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 634 states have (on average 1.38801261829653) internal successors, (880), 634 states have internal predecessors, (880), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 883 transitions. [2023-04-02 06:22:53,008 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 883 transitions. Word has length 79 [2023-04-02 06:22:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:53,009 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 883 transitions. [2023-04-02 06:22:53,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 883 transitions. [2023-04-02 06:22:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-02 06:22:53,010 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:53,010 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] [2023-04-02 06:22:53,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:22:53,010 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:53,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:53,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2045075862, now seen corresponding path program 1 times [2023-04-02 06:22:53,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:53,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362559697] [2023-04-02 06:22:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:53,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:53,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:53,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362559697] [2023-04-02 06:22:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362559697] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:53,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:53,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:22:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504818944] [2023-04-02 06:22:53,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:22:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:22:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:22:53,239 INFO L87 Difference]: Start difference. First operand 638 states and 883 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:54,102 INFO L93 Difference]: Finished difference Result 1120 states and 1571 transitions. [2023-04-02 06:22:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:22:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 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 79 [2023-04-02 06:22:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:54,105 INFO L225 Difference]: With dead ends: 1120 [2023-04-02 06:22:54,105 INFO L226 Difference]: Without dead ends: 960 [2023-04-02 06:22:54,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:22:54,106 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 274 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:54,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 461 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:22:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-04-02 06:22:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 796. [2023-04-02 06:22:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 792 states have (on average 1.3964646464646464) internal successors, (1106), 792 states have internal predecessors, (1106), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1109 transitions. [2023-04-02 06:22:54,472 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1109 transitions. Word has length 79 [2023-04-02 06:22:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:54,473 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1109 transitions. [2023-04-02 06:22:54,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1109 transitions. [2023-04-02 06:22:54,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 06:22:54,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:54,474 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] [2023-04-02 06:22:54,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:22:54,474 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:54,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1500716567, now seen corresponding path program 1 times [2023-04-02 06:22:54,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:54,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391418777] [2023-04-02 06:22:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:54,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:54,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:54,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391418777] [2023-04-02 06:22:54,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391418777] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:54,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:54,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:22:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368888439] [2023-04-02 06:22:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:54,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:22:54,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:22:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:22:54,729 INFO L87 Difference]: Start difference. First operand 796 states and 1109 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:55,765 INFO L93 Difference]: Finished difference Result 2152 states and 3023 transitions. [2023-04-02 06:22:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:22:55,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-02 06:22:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:55,769 INFO L225 Difference]: With dead ends: 2152 [2023-04-02 06:22:55,769 INFO L226 Difference]: Without dead ends: 1438 [2023-04-02 06:22:55,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:22:55,770 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 59 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:55,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 260 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:22:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2023-04-02 06:22:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1364. [2023-04-02 06:22:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1360 states have (on average 1.3838235294117647) internal successors, (1882), 1360 states have internal predecessors, (1882), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1885 transitions. [2023-04-02 06:22:56,628 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1885 transitions. Word has length 80 [2023-04-02 06:22:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:56,628 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 1885 transitions. [2023-04-02 06:22:56,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1885 transitions. [2023-04-02 06:22:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:22:56,629 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:56,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:22:56,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:22:56,629 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:56,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1650729809, now seen corresponding path program 1 times [2023-04-02 06:22:56,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:56,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883821601] [2023-04-02 06:22:56,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:56,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:56,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883821601] [2023-04-02 06:22:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883821601] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:56,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:56,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:22:56,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558426691] [2023-04-02 06:22:56,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:56,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:22:56,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:56,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:22:56,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:22:56,849 INFO L87 Difference]: Start difference. First operand 1364 states and 1885 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:22:58,429 INFO L93 Difference]: Finished difference Result 3784 states and 5225 transitions. [2023-04-02 06:22:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:22:58,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 81 [2023-04-02 06:22:58,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:22:58,436 INFO L225 Difference]: With dead ends: 3784 [2023-04-02 06:22:58,436 INFO L226 Difference]: Without dead ends: 2502 [2023-04-02 06:22:58,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:22:58,438 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 52 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:22:58,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 259 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:22:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2023-04-02 06:22:59,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2356. [2023-04-02 06:22:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2352 states have (on average 1.3643707482993197) internal successors, (3209), 2352 states have internal predecessors, (3209), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3212 transitions. [2023-04-02 06:22:59,657 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3212 transitions. Word has length 81 [2023-04-02 06:22:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:22:59,657 INFO L495 AbstractCegarLoop]: Abstraction has 2356 states and 3212 transitions. [2023-04-02 06:22:59,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:22:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3212 transitions. [2023-04-02 06:22:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:22:59,658 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:22:59,658 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] [2023-04-02 06:22:59,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:22:59,659 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:22:59,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:22:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1113382500, now seen corresponding path program 1 times [2023-04-02 06:22:59,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:22:59,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143647968] [2023-04-02 06:22:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:22:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:22:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:22:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:22:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:22:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:22:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143647968] [2023-04-02 06:22:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143647968] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:22:59,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:22:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:22:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889969693] [2023-04-02 06:22:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:22:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:22:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:22:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:22:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:22:59,892 INFO L87 Difference]: Start difference. First operand 2356 states and 3212 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:02,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:23:02,441 INFO L93 Difference]: Finished difference Result 6616 states and 8954 transitions. [2023-04-02 06:23:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:23:02,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 82 [2023-04-02 06:23:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:23:02,453 INFO L225 Difference]: With dead ends: 6616 [2023-04-02 06:23:02,453 INFO L226 Difference]: Without dead ends: 4342 [2023-04-02 06:23:02,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:23:02,458 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 42 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:23:02,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 258 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:23:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2023-04-02 06:23:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 4052. [2023-04-02 06:23:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 4048 states have (on average 1.3327569169960474) internal successors, (5395), 4048 states have internal predecessors, (5395), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 5398 transitions. [2023-04-02 06:23:04,590 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 5398 transitions. Word has length 82 [2023-04-02 06:23:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:23:04,591 INFO L495 AbstractCegarLoop]: Abstraction has 4052 states and 5398 transitions. [2023-04-02 06:23:04,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 5398 transitions. [2023-04-02 06:23:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:23:04,592 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:23:04,592 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] [2023-04-02 06:23:04,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:23:04,592 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:23:04,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:23:04,592 INFO L85 PathProgramCache]: Analyzing trace with hash 292032224, now seen corresponding path program 1 times [2023-04-02 06:23:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:23:04,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469552958] [2023-04-02 06:23:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:04,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:23:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:23:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:23:04,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:23:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469552958] [2023-04-02 06:23:04,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469552958] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:23:04,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:23:04,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:23:04,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090901970] [2023-04-02 06:23:04,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:23:04,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 06:23:04,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:23:04,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 06:23:04,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:23:04,892 INFO L87 Difference]: Start difference. First operand 4052 states and 5398 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:23:07,831 INFO L93 Difference]: Finished difference Result 4828 states and 6342 transitions. [2023-04-02 06:23:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:23:07,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 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 83 [2023-04-02 06:23:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:23:07,842 INFO L225 Difference]: With dead ends: 4828 [2023-04-02 06:23:07,842 INFO L226 Difference]: Without dead ends: 4826 [2023-04-02 06:23:07,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:23:07,843 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 196 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:23:07,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 625 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:23:07,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2023-04-02 06:23:10,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4052. [2023-04-02 06:23:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 4048 states have (on average 1.3129940711462451) internal successors, (5315), 4048 states have internal predecessors, (5315), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 5318 transitions. [2023-04-02 06:23:10,074 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 5318 transitions. Word has length 83 [2023-04-02 06:23:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:23:10,074 INFO L495 AbstractCegarLoop]: Abstraction has 4052 states and 5318 transitions. [2023-04-02 06:23:10,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 5318 transitions. [2023-04-02 06:23:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 06:23:10,076 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:23:10,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:23:10,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:23:10,076 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:23:10,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:23:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash 434202636, now seen corresponding path program 1 times [2023-04-02 06:23:10,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:23:10,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576594174] [2023-04-02 06:23:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:10,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:23:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:23:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 06:23:10,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:23:10,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576594174] [2023-04-02 06:23:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576594174] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:23:10,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:23:10,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:23:10,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974383696] [2023-04-02 06:23:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:23:10,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:23:10,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:23:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:23:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:23:10,509 INFO L87 Difference]: Start difference. First operand 4052 states and 5318 transitions. Second operand has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:23:15,488 INFO L93 Difference]: Finished difference Result 12174 states and 15962 transitions. [2023-04-02 06:23:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:23:15,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2023-04-02 06:23:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:23:15,510 INFO L225 Difference]: With dead ends: 12174 [2023-04-02 06:23:15,510 INFO L226 Difference]: Without dead ends: 8192 [2023-04-02 06:23:15,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:23:15,517 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 441 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:23:15,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 425 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:23:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8192 states. [2023-04-02 06:23:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8192 to 4052. [2023-04-02 06:23:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 4048 states have (on average 1.3125) internal successors, (5313), 4048 states have internal predecessors, (5313), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 5316 transitions. [2023-04-02 06:23:17,844 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 5316 transitions. Word has length 106 [2023-04-02 06:23:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:23:17,844 INFO L495 AbstractCegarLoop]: Abstraction has 4052 states and 5316 transitions. [2023-04-02 06:23:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 5316 transitions. [2023-04-02 06:23:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 06:23:17,846 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:23:17,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:23:17,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:23:17,847 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:23:17,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:23:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1353388443, now seen corresponding path program 1 times [2023-04-02 06:23:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:23:17,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841528823] [2023-04-02 06:23:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:17,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:23:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:23:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:23:18,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:23:18,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841528823] [2023-04-02 06:23:18,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841528823] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:23:18,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911636807] [2023-04-02 06:23:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:18,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:23:18,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:23:18,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 06:23:18,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 06:23:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:18,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 28 conjunts are in the unsatisfiable core [2023-04-02 06:23:18,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:23:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 06:23:20,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 06:23:20,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911636807] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:23:20,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 06:23:20,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [14] total 32 [2023-04-02 06:23:20,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259183183] [2023-04-02 06:23:20,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:23:20,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 06:23:20,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:23:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 06:23:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2023-04-02 06:23:20,670 INFO L87 Difference]: Start difference. First operand 4052 states and 5316 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:30,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:23:30,651 INFO L93 Difference]: Finished difference Result 19972 states and 26274 transitions. [2023-04-02 06:23:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 06:23:30,651 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 1 states have call successors, (2), 1 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 108 [2023-04-02 06:23:30,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:23:30,684 INFO L225 Difference]: With dead ends: 19972 [2023-04-02 06:23:30,684 INFO L226 Difference]: Without dead ends: 15995 [2023-04-02 06:23:30,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=1458, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 06:23:30,694 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 359 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:23:30,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1664 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:23:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15995 states. [2023-04-02 06:23:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15995 to 4057. [2023-04-02 06:23:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4057 states, 4053 states have (on average 1.312114483098939) internal successors, (5318), 4053 states have internal predecessors, (5318), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 5321 transitions. [2023-04-02 06:23:33,244 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 5321 transitions. Word has length 108 [2023-04-02 06:23:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:23:33,244 INFO L495 AbstractCegarLoop]: Abstraction has 4057 states and 5321 transitions. [2023-04-02 06:23:33,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 5321 transitions. [2023-04-02 06:23:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:23:33,246 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:23:33,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:23:33,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 06:23:33,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-04-02 06:23:33,455 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:23:33,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:23:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1421442859, now seen corresponding path program 1 times [2023-04-02 06:23:33,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:23:33,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920751118] [2023-04-02 06:23:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:33,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:23:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:23:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 06:23:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:23:33,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920751118] [2023-04-02 06:23:33,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920751118] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:23:33,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:23:33,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:23:33,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493687303] [2023-04-02 06:23:33,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:23:33,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:23:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:23:33,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:23:33,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:23:33,693 INFO L87 Difference]: Start difference. First operand 4057 states and 5321 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:23:38,318 INFO L93 Difference]: Finished difference Result 10897 states and 14247 transitions. [2023-04-02 06:23:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:23:38,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 109 [2023-04-02 06:23:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:23:38,331 INFO L225 Difference]: With dead ends: 10897 [2023-04-02 06:23:38,331 INFO L226 Difference]: Without dead ends: 6927 [2023-04-02 06:23:38,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:23:38,338 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 218 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:23:38,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 163 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:23:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6927 states. [2023-04-02 06:23:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6927 to 4007. [2023-04-02 06:23:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 4003 states have (on average 1.3067699225580813) internal successors, (5231), 4003 states have internal predecessors, (5231), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5234 transitions. [2023-04-02 06:23:41,199 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5234 transitions. Word has length 109 [2023-04-02 06:23:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:23:41,199 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 5234 transitions. [2023-04-02 06:23:41,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:23:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5234 transitions. [2023-04-02 06:23:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:23:41,200 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:23:41,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:23:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:23:41,201 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 06:23:41,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:23:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 507947878, now seen corresponding path program 1 times [2023-04-02 06:23:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:23:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395333850] [2023-04-02 06:23:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:23:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:23:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:23:42,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:23:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395333850] [2023-04-02 06:23:42,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395333850] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 06:23:42,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185867816] [2023-04-02 06:23:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:23:42,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 06:23:42,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:23:42,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 06:23:42,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 06:23:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:23:43,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 06:23:43,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 06:23:44,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:23:44,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 06:23:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:23:47,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185867816] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 06:23:47,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 06:23:47,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19, 18] total 62 [2023-04-02 06:23:47,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464021978] [2023-04-02 06:23:47,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 06:23:47,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-04-02 06:23:47,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:23:47,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-04-02 06:23:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=3581, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 06:23:47,370 INFO L87 Difference]: Start difference. First operand 4007 states and 5234 transitions. Second operand has 62 states, 62 states have (on average 4.854838709677419) internal successors, (301), 61 states have internal predecessors, (301), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)