/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:46:00,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:46:00,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:46:00,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:46:00,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:46:00,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:46:00,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:46:00,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:46:00,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:46:00,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:46:00,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:46:00,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:46:00,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:46:00,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:46:00,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:46:00,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:46:00,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:46:00,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:46:00,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:46:00,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:46:00,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:46:00,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:46:00,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:46:00,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:46:00,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:46:00,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:46:00,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:46:00,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:46:00,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:46:00,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:46:00,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:46:00,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:46:00,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:46:00,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:46:00,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:46:00,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:46:00,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:46:00,779 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:46:00,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:46:00,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:46:00,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:46:00,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:46:00,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:46:00,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:46:00,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:46:00,783 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:46:00,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:46:00,784 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:46:00,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:46:00,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:46:00,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:46:00,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:46:00,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:46:00,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:46:00,785 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:46:00,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:46:00,786 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:46:00,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:46:00,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:46:00,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:46:00,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:46:00,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:46:00,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:46:00,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:46:00,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:46:00,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:46:00,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:46:00,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:46:00,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:46:00,788 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:46:00,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:46:00,789 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:46:00,789 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:46:01,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:46:01,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:46:01,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:46:01,051 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:46:01,051 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:46:01,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-04-02 05:46:02,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:46:02,536 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:46:02,537 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-04-02 05:46:02,551 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75b42f8f/933a76ad00074e34a6cd44b9e19cfdd0/FLAGf94332ed8 [2023-04-02 05:46:02,564 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75b42f8f/933a76ad00074e34a6cd44b9e19cfdd0 [2023-04-02 05:46:02,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:46:02,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:46:02,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:46:02,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:46:02,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:46:02,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:46:02" (1/1) ... [2023-04-02 05:46:02,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@604728ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:02, skipping insertion in model container [2023-04-02 05:46:02,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:46:02" (1/1) ... [2023-04-02 05:46:02,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:46:02,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:46:02,876 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14145,14158] [2023-04-02 05:46:02,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:46:02,955 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:46:03,043 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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[14145,14158] [2023-04-02 05:46:03,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:46:03,097 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:46:03,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03 WrapperNode [2023-04-02 05:46:03,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:46:03,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:46:03,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:46:03,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:46:03,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,193 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:46:03,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:46:03,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:46:03,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:46:03,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (1/1) ... [2023-04-02 05:46:03,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:46:03,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:46:03,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:46:03,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:46:03,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:46:03,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:46:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:46:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:46:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:46:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:46:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:46:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:46:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:46:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:46:03,466 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:46:03,467 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:46:04,418 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:46:04,427 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:46:04,427 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 05:46:04,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:46:04 BoogieIcfgContainer [2023-04-02 05:46:04,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:46:04,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:46:04,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:46:04,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:46:04,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:46:02" (1/3) ... [2023-04-02 05:46:04,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a02ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:46:04, skipping insertion in model container [2023-04-02 05:46:04,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:46:03" (2/3) ... [2023-04-02 05:46:04,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a02ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:46:04, skipping insertion in model container [2023-04-02 05:46:04,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:46:04" (3/3) ... [2023-04-02 05:46:04,437 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-04-02 05:46:04,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:46:04,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:46:04,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:46:04,525 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;@660a2657, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:46:04,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:46:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 293 states have (on average 1.7918088737201365) internal successors, (525), 302 states have internal predecessors, (525), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 05:46:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 05:46:04,546 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:04,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:04,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:04,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:04,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1408635007, now seen corresponding path program 1 times [2023-04-02 05:46:04,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:04,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165563453] [2023-04-02 05:46:04,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:04,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:05,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:05,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165563453] [2023-04-02 05:46:05,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165563453] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:05,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:05,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:46:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285992847] [2023-04-02 05:46:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:46:05,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:05,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:46:05,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:05,513 INFO L87 Difference]: Start difference. First operand has 307 states, 293 states have (on average 1.7918088737201365) internal successors, (525), 302 states have internal predecessors, (525), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:06,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:06,851 INFO L93 Difference]: Finished difference Result 607 states and 1024 transitions. [2023-04-02 05:46:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:06,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 145 [2023-04-02 05:46:06,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:06,865 INFO L225 Difference]: With dead ends: 607 [2023-04-02 05:46:06,865 INFO L226 Difference]: Without dead ends: 467 [2023-04-02 05:46:06,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:06,877 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 344 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:06,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 861 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:46:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-04-02 05:46:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 465. [2023-04-02 05:46:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 461 states have (on average 1.4511930585683297) internal successors, (669), 461 states have internal predecessors, (669), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 672 transitions. [2023-04-02 05:46:06,945 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 672 transitions. Word has length 145 [2023-04-02 05:46:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:06,946 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 672 transitions. [2023-04-02 05:46:06,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 672 transitions. [2023-04-02 05:46:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 05:46:06,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:06,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:06,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:46:06,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:06,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash 200606419, now seen corresponding path program 1 times [2023-04-02 05:46:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:06,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804520648] [2023-04-02 05:46:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:06,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:07,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804520648] [2023-04-02 05:46:07,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804520648] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:07,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:07,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:07,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396347261] [2023-04-02 05:46:07,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:07,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:46:07,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:07,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:46:07,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:07,602 INFO L87 Difference]: Start difference. First operand 465 states and 672 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:08,986 INFO L93 Difference]: Finished difference Result 1353 states and 1951 transitions. [2023-04-02 05:46:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:08,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 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 145 [2023-04-02 05:46:08,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:08,991 INFO L225 Difference]: With dead ends: 1353 [2023-04-02 05:46:08,991 INFO L226 Difference]: Without dead ends: 901 [2023-04-02 05:46:08,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:08,995 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 829 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:08,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1097 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:46:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-04-02 05:46:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 899. [2023-04-02 05:46:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 895 states have (on average 1.43463687150838) internal successors, (1284), 895 states have internal predecessors, (1284), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1287 transitions. [2023-04-02 05:46:09,064 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1287 transitions. Word has length 145 [2023-04-02 05:46:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:09,066 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1287 transitions. [2023-04-02 05:46:09,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:09,067 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1287 transitions. [2023-04-02 05:46:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-02 05:46:09,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:09,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:09,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:46:09,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:09,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1454292169, now seen corresponding path program 1 times [2023-04-02 05:46:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:09,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871964791] [2023-04-02 05:46:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:09,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871964791] [2023-04-02 05:46:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871964791] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:09,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:09,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:46:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339092932] [2023-04-02 05:46:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:09,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:46:09,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:46:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:09,331 INFO L87 Difference]: Start difference. First operand 899 states and 1287 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:10,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:10,266 INFO L93 Difference]: Finished difference Result 2651 states and 3791 transitions. [2023-04-02 05:46:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:46:10,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 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 146 [2023-04-02 05:46:10,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:10,274 INFO L225 Difference]: With dead ends: 2651 [2023-04-02 05:46:10,274 INFO L226 Difference]: Without dead ends: 1784 [2023-04-02 05:46:10,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:10,277 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 403 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:10,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 893 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:46:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2023-04-02 05:46:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 901. [2023-04-02 05:46:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 897 states have (on average 1.4336677814938685) internal successors, (1286), 897 states have internal predecessors, (1286), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1289 transitions. [2023-04-02 05:46:10,365 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1289 transitions. Word has length 146 [2023-04-02 05:46:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:10,366 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1289 transitions. [2023-04-02 05:46:10,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1289 transitions. [2023-04-02 05:46:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-02 05:46:10,368 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:10,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:10,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:46:10,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:10,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1827096306, now seen corresponding path program 1 times [2023-04-02 05:46:10,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:10,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727469010] [2023-04-02 05:46:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:10,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:10,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727469010] [2023-04-02 05:46:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727469010] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:10,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186969882] [2023-04-02 05:46:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:10,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:46:10,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:10,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:46:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:10,879 INFO L87 Difference]: Start difference. First operand 901 states and 1289 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:12,346 INFO L93 Difference]: Finished difference Result 2591 states and 3691 transitions. [2023-04-02 05:46:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:12,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 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 147 [2023-04-02 05:46:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:12,355 INFO L225 Difference]: With dead ends: 2591 [2023-04-02 05:46:12,356 INFO L226 Difference]: Without dead ends: 1724 [2023-04-02 05:46:12,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:12,366 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 811 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:12,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1060 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:46:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2023-04-02 05:46:12,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1722. [2023-04-02 05:46:12,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1718 states have (on average 1.4126891734575087) internal successors, (2427), 1718 states have internal predecessors, (2427), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2430 transitions. [2023-04-02 05:46:12,536 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2430 transitions. Word has length 147 [2023-04-02 05:46:12,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:12,536 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2430 transitions. [2023-04-02 05:46:12,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2430 transitions. [2023-04-02 05:46:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-02 05:46:12,540 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:12,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:12,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:46:12,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:12,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1545649400, now seen corresponding path program 1 times [2023-04-02 05:46:12,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:12,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113646101] [2023-04-02 05:46:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:12,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:12,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113646101] [2023-04-02 05:46:12,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113646101] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:12,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:12,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:46:12,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716890379] [2023-04-02 05:46:12,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:12,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:46:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:46:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:12,819 INFO L87 Difference]: Start difference. First operand 1722 states and 2430 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:14,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:14,407 INFO L93 Difference]: Finished difference Result 5082 states and 7162 transitions. [2023-04-02 05:46:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:46:14,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 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 148 [2023-04-02 05:46:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:14,422 INFO L225 Difference]: With dead ends: 5082 [2023-04-02 05:46:14,422 INFO L226 Difference]: Without dead ends: 3408 [2023-04-02 05:46:14,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:14,427 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 389 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:14,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1212 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:46:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2023-04-02 05:46:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 1726. [2023-04-02 05:46:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1722 states have (on average 1.4117305458768874) internal successors, (2431), 1722 states have internal predecessors, (2431), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2434 transitions. [2023-04-02 05:46:14,601 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2434 transitions. Word has length 148 [2023-04-02 05:46:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:14,602 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2434 transitions. [2023-04-02 05:46:14,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2434 transitions. [2023-04-02 05:46:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-02 05:46:14,606 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:14,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:14,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:46:14,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:14,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1666778338, now seen corresponding path program 1 times [2023-04-02 05:46:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:14,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986160950] [2023-04-02 05:46:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:14,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986160950] [2023-04-02 05:46:14,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986160950] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:14,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:14,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:46:14,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283999966] [2023-04-02 05:46:14,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:14,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:46:14,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:46:14,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:14,943 INFO L87 Difference]: Start difference. First operand 1726 states and 2434 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:16,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:16,593 INFO L93 Difference]: Finished difference Result 4730 states and 6690 transitions. [2023-04-02 05:46:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:46:16,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 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 149 [2023-04-02 05:46:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:16,607 INFO L225 Difference]: With dead ends: 4730 [2023-04-02 05:46:16,607 INFO L226 Difference]: Without dead ends: 3316 [2023-04-02 05:46:16,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:16,613 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 333 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:16,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1138 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:46:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2023-04-02 05:46:16,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3314. [2023-04-02 05:46:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 3310 states have (on average 1.3936555891238671) internal successors, (4613), 3310 states have internal predecessors, (4613), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 4616 transitions. [2023-04-02 05:46:16,970 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 4616 transitions. Word has length 149 [2023-04-02 05:46:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:16,971 INFO L495 AbstractCegarLoop]: Abstraction has 3314 states and 4616 transitions. [2023-04-02 05:46:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 4616 transitions. [2023-04-02 05:46:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-02 05:46:16,978 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:16,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:16,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:46:16,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:16,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1715831583, now seen corresponding path program 1 times [2023-04-02 05:46:16,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:16,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981457561] [2023-04-02 05:46:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:17,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:17,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981457561] [2023-04-02 05:46:17,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981457561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:17,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:17,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:46:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596618813] [2023-04-02 05:46:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:17,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:46:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:46:17,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:17,481 INFO L87 Difference]: Start difference. First operand 3314 states and 4616 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:19,403 INFO L93 Difference]: Finished difference Result 9398 states and 13077 transitions. [2023-04-02 05:46:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:19,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 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 149 [2023-04-02 05:46:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:19,427 INFO L225 Difference]: With dead ends: 9398 [2023-04-02 05:46:19,427 INFO L226 Difference]: Without dead ends: 6125 [2023-04-02 05:46:19,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:19,436 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 1191 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:19,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 1056 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:46:19,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2023-04-02 05:46:20,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 6123. [2023-04-02 05:46:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6119 states have (on average 1.3765321130903743) internal successors, (8423), 6119 states have internal predecessors, (8423), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 8426 transitions. [2023-04-02 05:46:20,048 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 8426 transitions. Word has length 149 [2023-04-02 05:46:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:20,048 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 8426 transitions. [2023-04-02 05:46:20,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 8426 transitions. [2023-04-02 05:46:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-02 05:46:20,059 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:20,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:20,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:46:20,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:20,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash -803064175, now seen corresponding path program 1 times [2023-04-02 05:46:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851405748] [2023-04-02 05:46:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:20,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:20,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851405748] [2023-04-02 05:46:20,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851405748] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:20,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:20,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902726003] [2023-04-02 05:46:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:20,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:46:20,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:46:20,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:20,512 INFO L87 Difference]: Start difference. First operand 6123 states and 8426 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:22,136 INFO L93 Difference]: Finished difference Result 12475 states and 17084 transitions. [2023-04-02 05:46:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:22,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 149 [2023-04-02 05:46:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:22,168 INFO L225 Difference]: With dead ends: 12475 [2023-04-02 05:46:22,168 INFO L226 Difference]: Without dead ends: 6473 [2023-04-02 05:46:22,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:22,181 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 800 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:22,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1044 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:46:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2023-04-02 05:46:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 6331. [2023-04-02 05:46:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 6327 states have (on average 1.3673146831041567) internal successors, (8651), 6327 states have internal predecessors, (8651), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:22,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 8654 transitions. [2023-04-02 05:46:22,935 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 8654 transitions. Word has length 149 [2023-04-02 05:46:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:22,935 INFO L495 AbstractCegarLoop]: Abstraction has 6331 states and 8654 transitions. [2023-04-02 05:46:22,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 8654 transitions. [2023-04-02 05:46:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 05:46:22,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:22,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:22,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:46:22,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:22,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash 76102855, now seen corresponding path program 1 times [2023-04-02 05:46:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:22,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927928645] [2023-04-02 05:46:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:22,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:23,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:23,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927928645] [2023-04-02 05:46:23,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927928645] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:23,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:23,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:46:23,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015797328] [2023-04-02 05:46:23,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:23,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:46:23,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:23,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:46:23,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:23,214 INFO L87 Difference]: Start difference. First operand 6331 states and 8654 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:24,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:24,961 INFO L93 Difference]: Finished difference Result 18295 states and 25076 transitions. [2023-04-02 05:46:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:46:24,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-04-02 05:46:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:25,004 INFO L225 Difference]: With dead ends: 18295 [2023-04-02 05:46:25,005 INFO L226 Difference]: Without dead ends: 12533 [2023-04-02 05:46:25,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:25,021 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 375 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:25,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 904 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:46:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2023-04-02 05:46:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 6347. [2023-04-02 05:46:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6347 states, 6343 states have (on average 1.3663881444111619) internal successors, (8667), 6343 states have internal predecessors, (8667), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6347 states to 6347 states and 8670 transitions. [2023-04-02 05:46:25,882 INFO L78 Accepts]: Start accepts. Automaton has 6347 states and 8670 transitions. Word has length 150 [2023-04-02 05:46:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:25,882 INFO L495 AbstractCegarLoop]: Abstraction has 6347 states and 8670 transitions. [2023-04-02 05:46:25,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 6347 states and 8670 transitions. [2023-04-02 05:46:25,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 05:46:25,893 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:25,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:25,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:46:25,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:25,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1385075120, now seen corresponding path program 1 times [2023-04-02 05:46:25,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:25,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68419961] [2023-04-02 05:46:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:25,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:26,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68419961] [2023-04-02 05:46:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68419961] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:26,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:26,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103895831] [2023-04-02 05:46:26,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:46:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:46:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:26,387 INFO L87 Difference]: Start difference. First operand 6347 states and 8670 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:27,518 INFO L93 Difference]: Finished difference Result 12680 states and 17322 transitions. [2023-04-02 05:46:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:27,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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 151 [2023-04-02 05:46:27,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:27,532 INFO L225 Difference]: With dead ends: 12680 [2023-04-02 05:46:27,532 INFO L226 Difference]: Without dead ends: 6345 [2023-04-02 05:46:27,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:27,545 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 65 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:27,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1285 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:46:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6345 states. [2023-04-02 05:46:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6345 to 6345. [2023-04-02 05:46:28,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6345 states, 6341 states have (on average 1.3661882983756506) internal successors, (8663), 6341 states have internal predecessors, (8663), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 8666 transitions. [2023-04-02 05:46:28,375 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 8666 transitions. Word has length 151 [2023-04-02 05:46:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:28,376 INFO L495 AbstractCegarLoop]: Abstraction has 6345 states and 8666 transitions. [2023-04-02 05:46:28,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 8666 transitions. [2023-04-02 05:46:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 05:46:28,387 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:28,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:28,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:46:28,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:28,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash 512746977, now seen corresponding path program 1 times [2023-04-02 05:46:28,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:28,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734406838] [2023-04-02 05:46:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:28,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:28,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:28,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734406838] [2023-04-02 05:46:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734406838] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:28,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:46:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030202449] [2023-04-02 05:46:28,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:28,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:46:28,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:46:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:28,698 INFO L87 Difference]: Start difference. First operand 6345 states and 8666 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:30,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:30,749 INFO L93 Difference]: Finished difference Result 14608 states and 20041 transitions. [2023-04-02 05:46:30,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:46:30,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 151 [2023-04-02 05:46:30,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:30,768 INFO L225 Difference]: With dead ends: 14608 [2023-04-02 05:46:30,768 INFO L226 Difference]: Without dead ends: 9382 [2023-04-02 05:46:30,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:30,779 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 338 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:30,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1110 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:46:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9382 states. [2023-04-02 05:46:31,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9382 to 9380. [2023-04-02 05:46:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9380 states, 9376 states have (on average 1.3417235494880546) internal successors, (12580), 9376 states have internal predecessors, (12580), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9380 states to 9380 states and 12583 transitions. [2023-04-02 05:46:31,705 INFO L78 Accepts]: Start accepts. Automaton has 9380 states and 12583 transitions. Word has length 151 [2023-04-02 05:46:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:31,705 INFO L495 AbstractCegarLoop]: Abstraction has 9380 states and 12583 transitions. [2023-04-02 05:46:31,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9380 states and 12583 transitions. [2023-04-02 05:46:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:46:31,717 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:31,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:31,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:46:31,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:31,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:31,718 INFO L85 PathProgramCache]: Analyzing trace with hash 837825349, now seen corresponding path program 1 times [2023-04-02 05:46:31,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:31,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025711460] [2023-04-02 05:46:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:32,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:32,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:32,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025711460] [2023-04-02 05:46:32,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025711460] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:32,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473272459] [2023-04-02 05:46:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:32,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:46:32,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:46:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:32,089 INFO L87 Difference]: Start difference. First operand 9380 states and 12583 transitions. Second operand has 6 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:33,902 INFO L93 Difference]: Finished difference Result 17678 states and 23924 transitions. [2023-04-02 05:46:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:46:33,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 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 154 [2023-04-02 05:46:33,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:33,920 INFO L225 Difference]: With dead ends: 17678 [2023-04-02 05:46:33,921 INFO L226 Difference]: Without dead ends: 9380 [2023-04-02 05:46:33,936 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 05:46:33,936 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1068 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:33,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 409 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:46:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9380 states. [2023-04-02 05:46:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9380 to 9380. [2023-04-02 05:46:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9380 states, 9376 states have (on average 1.328924914675768) internal successors, (12460), 9376 states have internal predecessors, (12460), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9380 states to 9380 states and 12463 transitions. [2023-04-02 05:46:35,149 INFO L78 Accepts]: Start accepts. Automaton has 9380 states and 12463 transitions. Word has length 154 [2023-04-02 05:46:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:35,149 INFO L495 AbstractCegarLoop]: Abstraction has 9380 states and 12463 transitions. [2023-04-02 05:46:35,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 9380 states and 12463 transitions. [2023-04-02 05:46:35,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:46:35,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:35,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:35,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:46:35,161 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:35,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1097083050, now seen corresponding path program 1 times [2023-04-02 05:46:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635986931] [2023-04-02 05:46:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635986931] [2023-04-02 05:46:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635986931] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:35,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:35,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:35,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127668079] [2023-04-02 05:46:35,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:35,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:46:35,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:35,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:46:35,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:35,582 INFO L87 Difference]: Start difference. First operand 9380 states and 12463 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:38,375 INFO L93 Difference]: Finished difference Result 23703 states and 31607 transitions. [2023-04-02 05:46:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:38,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 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 154 [2023-04-02 05:46:38,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:38,407 INFO L225 Difference]: With dead ends: 23703 [2023-04-02 05:46:38,407 INFO L226 Difference]: Without dead ends: 14651 [2023-04-02 05:46:38,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:38,470 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 844 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:38,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1033 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:46:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14651 states. [2023-04-02 05:46:40,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14651 to 14649. [2023-04-02 05:46:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14649 states, 14645 states have (on average 1.3175145100716967) internal successors, (19295), 14645 states have internal predecessors, (19295), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14649 states to 14649 states and 19298 transitions. [2023-04-02 05:46:40,347 INFO L78 Accepts]: Start accepts. Automaton has 14649 states and 19298 transitions. Word has length 154 [2023-04-02 05:46:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:40,348 INFO L495 AbstractCegarLoop]: Abstraction has 14649 states and 19298 transitions. [2023-04-02 05:46:40,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 14649 states and 19298 transitions. [2023-04-02 05:46:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-02 05:46:40,368 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:40,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:40,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:46:40,369 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:40,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1888893929, now seen corresponding path program 1 times [2023-04-02 05:46:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:40,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340458726] [2023-04-02 05:46:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:40,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:40,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:40,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340458726] [2023-04-02 05:46:40,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340458726] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:40,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:40,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399861291] [2023-04-02 05:46:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:40,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:46:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:46:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:40,934 INFO L87 Difference]: Start difference. First operand 14649 states and 19298 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:42,829 INFO L93 Difference]: Finished difference Result 22933 states and 30292 transitions. [2023-04-02 05:46:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:42,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 156 [2023-04-02 05:46:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:42,851 INFO L225 Difference]: With dead ends: 22933 [2023-04-02 05:46:42,851 INFO L226 Difference]: Without dead ends: 12005 [2023-04-02 05:46:42,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:42,872 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 53 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:42,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1257 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:46:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12005 states. [2023-04-02 05:46:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12005 to 12005. [2023-04-02 05:46:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12005 states, 12001 states have (on average 1.3130572452295641) internal successors, (15758), 12001 states have internal predecessors, (15758), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12005 states to 12005 states and 15761 transitions. [2023-04-02 05:46:44,595 INFO L78 Accepts]: Start accepts. Automaton has 12005 states and 15761 transitions. Word has length 156 [2023-04-02 05:46:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:44,595 INFO L495 AbstractCegarLoop]: Abstraction has 12005 states and 15761 transitions. [2023-04-02 05:46:44,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 12005 states and 15761 transitions. [2023-04-02 05:46:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-04-02 05:46:44,612 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:44,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:44,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:46:44,612 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:44,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash -243443457, now seen corresponding path program 1 times [2023-04-02 05:46:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:44,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036906219] [2023-04-02 05:46:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:44,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:45,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:45,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036906219] [2023-04-02 05:46:45,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036906219] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:45,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858037122] [2023-04-02 05:46:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:46:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:46:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:45,215 INFO L87 Difference]: Start difference. First operand 12005 states and 15761 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:48,527 INFO L93 Difference]: Finished difference Result 26177 states and 35371 transitions. [2023-04-02 05:46:48,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:46:48,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 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 159 [2023-04-02 05:46:48,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:48,557 INFO L225 Difference]: With dead ends: 26177 [2023-04-02 05:46:48,558 INFO L226 Difference]: Without dead ends: 21263 [2023-04-02 05:46:48,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:48,570 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 654 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:48,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 741 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:46:48,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21263 states. [2023-04-02 05:46:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21263 to 21261. [2023-04-02 05:46:51,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21261 states, 21257 states have (on average 1.3220115726584185) internal successors, (28102), 21257 states have internal predecessors, (28102), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:51,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21261 states to 21261 states and 28105 transitions. [2023-04-02 05:46:51,325 INFO L78 Accepts]: Start accepts. Automaton has 21261 states and 28105 transitions. Word has length 159 [2023-04-02 05:46:51,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:51,326 INFO L495 AbstractCegarLoop]: Abstraction has 21261 states and 28105 transitions. [2023-04-02 05:46:51,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 21261 states and 28105 transitions. [2023-04-02 05:46:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-04-02 05:46:51,347 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:51,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:51,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:46:51,348 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:51,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:51,348 INFO L85 PathProgramCache]: Analyzing trace with hash 653152200, now seen corresponding path program 1 times [2023-04-02 05:46:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:51,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299054458] [2023-04-02 05:46:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:51,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:51,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299054458] [2023-04-02 05:46:51,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299054458] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:51,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:51,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:46:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924025059] [2023-04-02 05:46:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:51,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:46:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:46:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:46:51,823 INFO L87 Difference]: Start difference. First operand 21261 states and 28105 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:54,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:46:54,768 INFO L93 Difference]: Finished difference Result 35563 states and 46955 transitions. [2023-04-02 05:46:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:46:54,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 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 159 [2023-04-02 05:46:54,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:46:54,790 INFO L225 Difference]: With dead ends: 35563 [2023-04-02 05:46:54,790 INFO L226 Difference]: Without dead ends: 14376 [2023-04-02 05:46:54,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:46:54,806 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 43 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:46:54,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1241 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:46:54,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14376 states. [2023-04-02 05:46:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14376 to 14376. [2023-04-02 05:46:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14376 states, 14372 states have (on average 1.3176315057055386) internal successors, (18937), 14372 states have internal predecessors, (18937), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14376 states to 14376 states and 18940 transitions. [2023-04-02 05:46:56,623 INFO L78 Accepts]: Start accepts. Automaton has 14376 states and 18940 transitions. Word has length 159 [2023-04-02 05:46:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:46:56,703 INFO L495 AbstractCegarLoop]: Abstraction has 14376 states and 18940 transitions. [2023-04-02 05:46:56,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:46:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14376 states and 18940 transitions. [2023-04-02 05:46:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 05:46:56,712 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:46:56,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:46:56,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:46:56,713 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:46:56,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:46:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash 467457312, now seen corresponding path program 1 times [2023-04-02 05:46:56,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:46:56,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073991680] [2023-04-02 05:46:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:46:56,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:46:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:46:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:46:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:46:57,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:46:57,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073991680] [2023-04-02 05:46:57,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073991680] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:46:57,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:46:57,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:46:57,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625890754] [2023-04-02 05:46:57,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:46:57,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:46:57,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:46:57,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:46:57,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:46:57,018 INFO L87 Difference]: Start difference. First operand 14376 states and 18940 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:01,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:47:01,343 INFO L93 Difference]: Finished difference Result 37863 states and 50517 transitions. [2023-04-02 05:47:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:47:01,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 167 [2023-04-02 05:47:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:47:01,379 INFO L225 Difference]: With dead ends: 37863 [2023-04-02 05:47:01,380 INFO L226 Difference]: Without dead ends: 26630 [2023-04-02 05:47:01,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:47:01,393 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 236 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:47:01,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 677 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:47:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26630 states. [2023-04-02 05:47:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26630 to 26628. [2023-04-02 05:47:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26628 states, 26624 states have (on average 1.3162935697115385) internal successors, (35045), 26624 states have internal predecessors, (35045), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26628 states to 26628 states and 35048 transitions. [2023-04-02 05:47:04,943 INFO L78 Accepts]: Start accepts. Automaton has 26628 states and 35048 transitions. Word has length 167 [2023-04-02 05:47:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:47:04,944 INFO L495 AbstractCegarLoop]: Abstraction has 26628 states and 35048 transitions. [2023-04-02 05:47:04,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 26628 states and 35048 transitions. [2023-04-02 05:47:04,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 05:47:04,963 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:04,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:47:04,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 05:47:04,963 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:47:04,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 599692443, now seen corresponding path program 1 times [2023-04-02 05:47:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522227970] [2023-04-02 05:47:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:47:05,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:05,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522227970] [2023-04-02 05:47:05,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522227970] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:05,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:05,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:47:05,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11675245] [2023-04-02 05:47:05,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:05,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:47:05,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:47:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:47:05,301 INFO L87 Difference]: Start difference. First operand 26628 states and 35048 transitions. Second operand has 6 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:08,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:47:08,127 INFO L93 Difference]: Finished difference Result 36636 states and 48788 transitions. [2023-04-02 05:47:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:47:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2023-04-02 05:47:08,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:47:08,148 INFO L225 Difference]: With dead ends: 36636 [2023-04-02 05:47:08,148 INFO L226 Difference]: Without dead ends: 14376 [2023-04-02 05:47:08,173 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 05:47:08,173 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1030 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:47:08,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 390 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:47:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14376 states. [2023-04-02 05:47:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14376 to 14376. [2023-04-02 05:47:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14376 states, 14372 states have (on average 1.2985666573893682) internal successors, (18663), 14372 states have internal predecessors, (18663), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14376 states to 14376 states and 18666 transitions. [2023-04-02 05:47:10,018 INFO L78 Accepts]: Start accepts. Automaton has 14376 states and 18666 transitions. Word has length 167 [2023-04-02 05:47:10,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:47:10,018 INFO L495 AbstractCegarLoop]: Abstraction has 14376 states and 18666 transitions. [2023-04-02 05:47:10,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 14376 states and 18666 transitions. [2023-04-02 05:47:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 05:47:10,028 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:10,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:47:10,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 05:47:10,029 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:47:10,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2091418779, now seen corresponding path program 1 times [2023-04-02 05:47:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874303537] [2023-04-02 05:47:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:10,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:10,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:47:10,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874303537] [2023-04-02 05:47:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874303537] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:10,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:10,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:47:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260029479] [2023-04-02 05:47:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:47:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:10,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:47:10,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:47:10,651 INFO L87 Difference]: Start difference. First operand 14376 states and 18666 transitions. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 8 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:47:15,264 INFO L93 Difference]: Finished difference Result 35125 states and 46717 transitions. [2023-04-02 05:47:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:47:15,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 8 states have internal predecessors, (164), 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 167 [2023-04-02 05:47:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:47:15,311 INFO L225 Difference]: With dead ends: 35125 [2023-04-02 05:47:15,311 INFO L226 Difference]: Without dead ends: 27247 [2023-04-02 05:47:15,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:47:15,324 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1538 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:47:15,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1001 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:47:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27247 states. [2023-04-02 05:47:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27247 to 27245. [2023-04-02 05:47:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27245 states, 27241 states have (on average 1.301567490180243) internal successors, (35456), 27241 states have internal predecessors, (35456), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27245 states to 27245 states and 35459 transitions. [2023-04-02 05:47:19,111 INFO L78 Accepts]: Start accepts. Automaton has 27245 states and 35459 transitions. Word has length 167 [2023-04-02 05:47:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:47:19,111 INFO L495 AbstractCegarLoop]: Abstraction has 27245 states and 35459 transitions. [2023-04-02 05:47:19,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 8 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:19,112 INFO L276 IsEmpty]: Start isEmpty. Operand 27245 states and 35459 transitions. [2023-04-02 05:47:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 05:47:19,135 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:19,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:47:19,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 05:47:19,136 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:47:19,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2120177080, now seen corresponding path program 1 times [2023-04-02 05:47:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492209652] [2023-04-02 05:47:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:19,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:47:19,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:19,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492209652] [2023-04-02 05:47:19,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492209652] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:19,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:47:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398074623] [2023-04-02 05:47:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:19,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:47:19,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:19,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:47:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:47:19,512 INFO L87 Difference]: Start difference. First operand 27245 states and 35459 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:47:25,975 INFO L93 Difference]: Finished difference Result 39928 states and 53622 transitions. [2023-04-02 05:47:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:47:25,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 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 167 [2023-04-02 05:47:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:47:26,027 INFO L225 Difference]: With dead ends: 39928 [2023-04-02 05:47:26,028 INFO L226 Difference]: Without dead ends: 37093 [2023-04-02 05:47:26,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:47:26,042 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 876 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:47:26,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1306 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:47:26,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37093 states. [2023-04-02 05:47:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37093 to 31463. [2023-04-02 05:47:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31463 states, 31459 states have (on average 1.3170157983406974) internal successors, (41432), 31459 states have internal predecessors, (41432), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31463 states to 31463 states and 41435 transitions. [2023-04-02 05:47:31,059 INFO L78 Accepts]: Start accepts. Automaton has 31463 states and 41435 transitions. Word has length 167 [2023-04-02 05:47:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:47:31,060 INFO L495 AbstractCegarLoop]: Abstraction has 31463 states and 41435 transitions. [2023-04-02 05:47:31,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 31463 states and 41435 transitions. [2023-04-02 05:47:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 05:47:31,086 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:31,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:47:31,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 05:47:31,086 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:47:31,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash -978984185, now seen corresponding path program 1 times [2023-04-02 05:47:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:31,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400730305] [2023-04-02 05:47:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:47:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400730305] [2023-04-02 05:47:31,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400730305] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:31,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:31,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:47:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487520375] [2023-04-02 05:47:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:31,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:47:31,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:47:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:47:31,544 INFO L87 Difference]: Start difference. First operand 31463 states and 41435 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:47:43,560 INFO L93 Difference]: Finished difference Result 77894 states and 108206 transitions. [2023-04-02 05:47:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 05:47:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 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 167 [2023-04-02 05:47:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:47:43,676 INFO L225 Difference]: With dead ends: 77894 [2023-04-02 05:47:43,676 INFO L226 Difference]: Without dead ends: 61985 [2023-04-02 05:47:43,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:47:43,703 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 1006 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:47:43,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 2002 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:47:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61985 states. [2023-04-02 05:47:51,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61985 to 43529. [2023-04-02 05:47:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43529 states, 43525 states have (on average 1.3464445720850087) internal successors, (58604), 43525 states have internal predecessors, (58604), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43529 states to 43529 states and 58607 transitions. [2023-04-02 05:47:51,554 INFO L78 Accepts]: Start accepts. Automaton has 43529 states and 58607 transitions. Word has length 167 [2023-04-02 05:47:51,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:47:51,554 INFO L495 AbstractCegarLoop]: Abstraction has 43529 states and 58607 transitions. [2023-04-02 05:47:51,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:47:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 43529 states and 58607 transitions. [2023-04-02 05:47:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 05:47:51,570 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:47:51,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:47:51,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 05:47:51,571 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:47:51,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:47:51,571 INFO L85 PathProgramCache]: Analyzing trace with hash -430975875, now seen corresponding path program 1 times [2023-04-02 05:47:51,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:47:51,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927486244] [2023-04-02 05:47:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:47:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:47:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:51,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:47:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:47:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:47:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:47:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927486244] [2023-04-02 05:47:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927486244] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:47:51,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:47:51,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:47:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254350899] [2023-04-02 05:47:51,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:47:51,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:47:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:47:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:47:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:47:51,993 INFO L87 Difference]: Start difference. First operand 43529 states and 58607 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:00,164 INFO L93 Difference]: Finished difference Result 76735 states and 103234 transitions. [2023-04-02 05:48:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:00,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 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 167 [2023-04-02 05:48:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:00,238 INFO L225 Difference]: With dead ends: 76735 [2023-04-02 05:48:00,238 INFO L226 Difference]: Without dead ends: 43519 [2023-04-02 05:48:00,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:00,272 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 23 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:00,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1205 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:48:00,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43519 states. [2023-04-02 05:48:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43519 to 43519. [2023-04-02 05:48:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43519 states, 43515 states have (on average 1.3464092841548891) internal successors, (58589), 43515 states have internal predecessors, (58589), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43519 states to 43519 states and 58592 transitions. [2023-04-02 05:48:08,057 INFO L78 Accepts]: Start accepts. Automaton has 43519 states and 58592 transitions. Word has length 167 [2023-04-02 05:48:08,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:08,057 INFO L495 AbstractCegarLoop]: Abstraction has 43519 states and 58592 transitions. [2023-04-02 05:48:08,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:08,057 INFO L276 IsEmpty]: Start isEmpty. Operand 43519 states and 58592 transitions. [2023-04-02 05:48:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 05:48:08,074 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:08,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:08,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 05:48:08,074 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:08,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:08,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1425718438, now seen corresponding path program 1 times [2023-04-02 05:48:08,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:08,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615026430] [2023-04-02 05:48:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:08,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:08,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:08,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:08,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615026430] [2023-04-02 05:48:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615026430] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:08,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:08,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:48:08,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514103632] [2023-04-02 05:48:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:08,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:48:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:08,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:48:08,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:08,530 INFO L87 Difference]: Start difference. First operand 43519 states and 58592 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:16,471 INFO L93 Difference]: Finished difference Result 81313 states and 109413 transitions. [2023-04-02 05:48:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:16,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 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 167 [2023-04-02 05:48:16,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:16,525 INFO L225 Difference]: With dead ends: 81313 [2023-04-02 05:48:16,525 INFO L226 Difference]: Without dead ends: 38045 [2023-04-02 05:48:16,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:16,725 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 704 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:16,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1123 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:48:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38045 states. [2023-04-02 05:48:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38045 to 37908. [2023-04-02 05:48:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37908 states, 37904 states have (on average 1.343763191219924) internal successors, (50934), 37904 states have internal predecessors, (50934), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37908 states to 37908 states and 50937 transitions. [2023-04-02 05:48:23,858 INFO L78 Accepts]: Start accepts. Automaton has 37908 states and 50937 transitions. Word has length 167 [2023-04-02 05:48:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:23,859 INFO L495 AbstractCegarLoop]: Abstraction has 37908 states and 50937 transitions. [2023-04-02 05:48:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 37908 states and 50937 transitions. [2023-04-02 05:48:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-02 05:48:23,875 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:23,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:23,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 05:48:23,876 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:23,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:23,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1427688410, now seen corresponding path program 1 times [2023-04-02 05:48:23,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:23,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028038650] [2023-04-02 05:48:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:23,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:24,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:24,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028038650] [2023-04-02 05:48:24,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028038650] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:24,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:24,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:48:24,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621972280] [2023-04-02 05:48:24,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:24,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:48:24,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:24,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:48:24,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:24,234 INFO L87 Difference]: Start difference. First operand 37908 states and 50937 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:35,959 INFO L93 Difference]: Finished difference Result 63098 states and 87037 transitions. [2023-04-02 05:48:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:48:35,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 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 172 [2023-04-02 05:48:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:36,055 INFO L225 Difference]: With dead ends: 63098 [2023-04-02 05:48:36,056 INFO L226 Difference]: Without dead ends: 53514 [2023-04-02 05:48:36,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:48:36,077 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 719 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:36,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1551 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:48:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53514 states. [2023-04-02 05:48:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53514 to 41508. [2023-04-02 05:48:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41508 states, 41504 states have (on average 1.3509541249036237) internal successors, (56070), 41504 states have internal predecessors, (56070), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41508 states to 41508 states and 56073 transitions. [2023-04-02 05:48:44,141 INFO L78 Accepts]: Start accepts. Automaton has 41508 states and 56073 transitions. Word has length 172 [2023-04-02 05:48:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:44,142 INFO L495 AbstractCegarLoop]: Abstraction has 41508 states and 56073 transitions. [2023-04-02 05:48:44,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 41508 states and 56073 transitions. [2023-04-02 05:48:44,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-02 05:48:44,158 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:44,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:44,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 05:48:44,158 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:44,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:44,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1214155540, now seen corresponding path program 1 times [2023-04-02 05:48:44,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:44,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712389778] [2023-04-02 05:48:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:44,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:44,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712389778] [2023-04-02 05:48:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712389778] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:44,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:44,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:48:44,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083550568] [2023-04-02 05:48:44,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:44,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:48:44,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:48:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:48:44,975 INFO L87 Difference]: Start difference. First operand 41508 states and 56073 transitions. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 9 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:54,095 INFO L93 Difference]: Finished difference Result 66822 states and 92075 transitions. [2023-04-02 05:48:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:48:54,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 9 states have internal predecessors, (169), 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 172 [2023-04-02 05:48:54,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:54,163 INFO L225 Difference]: With dead ends: 66822 [2023-04-02 05:48:54,163 INFO L226 Difference]: Without dead ends: 41510 [2023-04-02 05:48:54,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:48:54,187 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 493 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:54,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 2570 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:48:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41510 states. [2023-04-02 05:49:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41510 to 39108. [2023-04-02 05:49:01,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39108 states, 39104 states have (on average 1.339862929623568) internal successors, (52394), 39104 states have internal predecessors, (52394), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39108 states to 39108 states and 52397 transitions. [2023-04-02 05:49:01,903 INFO L78 Accepts]: Start accepts. Automaton has 39108 states and 52397 transitions. Word has length 172 [2023-04-02 05:49:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:01,904 INFO L495 AbstractCegarLoop]: Abstraction has 39108 states and 52397 transitions. [2023-04-02 05:49:01,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 9 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 39108 states and 52397 transitions. [2023-04-02 05:49:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-02 05:49:01,918 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:01,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:49:01,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 05:49:01,919 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:49:01,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:01,919 INFO L85 PathProgramCache]: Analyzing trace with hash -127015576, now seen corresponding path program 1 times [2023-04-02 05:49:01,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:01,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652137789] [2023-04-02 05:49:01,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:01,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:02,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:49:02,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:02,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652137789] [2023-04-02 05:49:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652137789] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:02,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:02,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:49:02,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891014988] [2023-04-02 05:49:02,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:02,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:49:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:49:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:02,227 INFO L87 Difference]: Start difference. First operand 39108 states and 52397 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:15,225 INFO L93 Difference]: Finished difference Result 60698 states and 83001 transitions. [2023-04-02 05:49:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:49:15,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 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 172 [2023-04-02 05:49:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:15,323 INFO L225 Difference]: With dead ends: 60698 [2023-04-02 05:49:15,323 INFO L226 Difference]: Without dead ends: 55878 [2023-04-02 05:49:15,342 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 05:49:15,342 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 697 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:15,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1780 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:49:15,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55878 states. [2023-04-02 05:49:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55878 to 41508. [2023-04-02 05:49:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41508 states, 41504 states have (on average 1.3440150346954511) internal successors, (55782), 41504 states have internal predecessors, (55782), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41508 states to 41508 states and 55785 transitions. [2023-04-02 05:49:23,668 INFO L78 Accepts]: Start accepts. Automaton has 41508 states and 55785 transitions. Word has length 172 [2023-04-02 05:49:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:23,669 INFO L495 AbstractCegarLoop]: Abstraction has 41508 states and 55785 transitions. [2023-04-02 05:49:23,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 41508 states and 55785 transitions. [2023-04-02 05:49:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-02 05:49:23,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:23,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:49:23,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 05:49:23,688 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:49:23,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1616798765, now seen corresponding path program 1 times [2023-04-02 05:49:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975620651] [2023-04-02 05:49:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:24,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:49:24,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:24,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975620651] [2023-04-02 05:49:24,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975620651] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:24,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:24,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:49:24,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151502935] [2023-04-02 05:49:24,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:24,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:49:24,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:24,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:49:24,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:49:24,561 INFO L87 Difference]: Start difference. First operand 41508 states and 55785 transitions. Second operand has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 13 states have internal predecessors, (169), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:50,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:50,280 INFO L93 Difference]: Finished difference Result 112119 states and 153820 transitions. [2023-04-02 05:49:50,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:49:50,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 13 states have internal predecessors, (169), 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 172 [2023-04-02 05:49:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:50,486 INFO L225 Difference]: With dead ends: 112119 [2023-04-02 05:49:50,486 INFO L226 Difference]: Without dead ends: 99827 [2023-04-02 05:49:50,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:49:50,522 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 3234 mSDsluCounter, 4006 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3234 SdHoareTripleChecker+Valid, 4465 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:50,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3234 Valid, 4465 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:49:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99827 states.