/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:42:12,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:42:12,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:42:12,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:42:12,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:42:12,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:42:12,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:42:12,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:42:12,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:42:12,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:42:12,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:42:12,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:42:12,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:42:12,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:42:12,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:42:12,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:42:12,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:42:12,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:42:12,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:42:12,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:42:12,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:42:12,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:42:12,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:42:12,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:42:12,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:42:12,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:42:12,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:42:12,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:42:12,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:42:12,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:42:12,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:42:12,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:42:12,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:42:12,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:42:12,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:42:12,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:42:12,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 06:42:12,807 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:42:12,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:42:12,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:42:12,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:42:12,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:42:12,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:42:12,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:42:12,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:42:12,808 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:42:12,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:42:12,808 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:42:12,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:42:12,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:42:12,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:42:12,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:42:12,810 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:42:12,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:42:12,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:42:12,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:42:12,976 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:42:12,976 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:42:12,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-04-02 06:42:13,976 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:42:14,222 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:42:14,223 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-04-02 06:42:14,234 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e043ad2/a9772ff2f8194a8a990fc698daa1f0cc/FLAG4443ea284 [2023-04-02 06:42:14,247 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e043ad2/a9772ff2f8194a8a990fc698daa1f0cc [2023-04-02 06:42:14,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:42:14,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:42:14,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:42:14,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:42:14,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:42:14,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8c6999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14, skipping insertion in model container [2023-04-02 06:42:14,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:42:14,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:42:14,450 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7633,7646] [2023-04-02 06:42:14,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:42:14,498 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:42:14,540 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c[7633,7646] [2023-04-02 06:42:14,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:42:14,580 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:42:14,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14 WrapperNode [2023-04-02 06:42:14,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:42:14,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:42:14,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:42:14,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:42:14,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,621 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:42:14,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:42:14,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:42:14,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:42:14,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (1/1) ... [2023-04-02 06:42:14,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:42:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:42:14,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 06:42:14,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 06:42:14,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:42:14,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:42:14,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:42:14,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:42:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:42:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:42:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:42:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:42:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:42:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:42:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:42:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:42:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:42:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:42:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:42:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:42:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:42:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:42:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:42:14,815 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:42:14,817 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:42:15,273 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:42:15,285 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:42:15,285 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:42:15,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:42:15 BoogieIcfgContainer [2023-04-02 06:42:15,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:42:15,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:42:15,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:42:15,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:42:15,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:42:14" (1/3) ... [2023-04-02 06:42:15,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2984e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:42:15, skipping insertion in model container [2023-04-02 06:42:15,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:42:14" (2/3) ... [2023-04-02 06:42:15,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2984e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:42:15, skipping insertion in model container [2023-04-02 06:42:15,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:42:15" (3/3) ... [2023-04-02 06:42:15,295 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+cfa-reducer.c [2023-04-02 06:42:15,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:42:15,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:42:15,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:42:15,365 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;@60d238e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:42:15,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:42:15,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 137 states have internal predecessors, (236), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:42:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 06:42:15,379 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:15,380 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] [2023-04-02 06:42:15,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:15,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash -691215733, now seen corresponding path program 1 times [2023-04-02 06:42:15,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990243028] [2023-04-02 06:42:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:16,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:16,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990243028] [2023-04-02 06:42:16,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990243028] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:16,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:16,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:42:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710668889] [2023-04-02 06:42:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:16,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:42:16,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:42:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:42:16,145 INFO L87 Difference]: Start difference. First operand has 142 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 137 states have internal predecessors, (236), 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 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:16,958 INFO L93 Difference]: Finished difference Result 304 states and 491 transitions. [2023-04-02 06:42:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:42:16,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 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 90 [2023-04-02 06:42:16,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:16,967 INFO L225 Difference]: With dead ends: 304 [2023-04-02 06:42:16,968 INFO L226 Difference]: Without dead ends: 207 [2023-04-02 06:42:16,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:42:16,972 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 170 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:16,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 485 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:42:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-04-02 06:42:17,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2023-04-02 06:42:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 201 states have (on average 1.427860696517413) internal successors, (287), 201 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:17,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 290 transitions. [2023-04-02 06:42:17,014 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 290 transitions. Word has length 90 [2023-04-02 06:42:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:17,015 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 290 transitions. [2023-04-02 06:42:17,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 290 transitions. [2023-04-02 06:42:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 06:42:17,017 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:17,017 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] [2023-04-02 06:42:17,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:42:17,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:17,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1653238891, now seen corresponding path program 1 times [2023-04-02 06:42:17,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950436314] [2023-04-02 06:42:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:17,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:17,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:17,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950436314] [2023-04-02 06:42:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950436314] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:17,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:17,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:42:17,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967179378] [2023-04-02 06:42:17,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:17,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:42:17,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:42:17,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:42:17,277 INFO L87 Difference]: Start difference. First operand 205 states and 290 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:17,882 INFO L93 Difference]: Finished difference Result 485 states and 730 transitions. [2023-04-02 06:42:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:42:17,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 91 [2023-04-02 06:42:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:17,886 INFO L225 Difference]: With dead ends: 485 [2023-04-02 06:42:17,886 INFO L226 Difference]: Without dead ends: 337 [2023-04-02 06:42:17,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:42:17,888 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 112 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:17,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 403 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:42:17,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-04-02 06:42:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2023-04-02 06:42:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 331 states have (on average 1.4833836858006042) internal successors, (491), 331 states have internal predecessors, (491), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 494 transitions. [2023-04-02 06:42:17,926 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 494 transitions. Word has length 91 [2023-04-02 06:42:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:17,927 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 494 transitions. [2023-04-02 06:42:17,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 494 transitions. [2023-04-02 06:42:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 06:42:17,933 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:17,933 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] [2023-04-02 06:42:17,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:42:17,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:17,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:17,934 INFO L85 PathProgramCache]: Analyzing trace with hash -994834493, now seen corresponding path program 1 times [2023-04-02 06:42:17,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:17,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416611715] [2023-04-02 06:42:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:17,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:18,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:18,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:18,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416611715] [2023-04-02 06:42:18,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416611715] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:18,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:18,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:42:18,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692184161] [2023-04-02 06:42:18,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:18,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:42:18,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:18,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:42:18,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:42:18,252 INFO L87 Difference]: Start difference. First operand 335 states and 494 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:18,832 INFO L93 Difference]: Finished difference Result 859 states and 1316 transitions. [2023-04-02 06:42:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:42:18,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 92 [2023-04-02 06:42:18,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:18,835 INFO L225 Difference]: With dead ends: 859 [2023-04-02 06:42:18,835 INFO L226 Difference]: Without dead ends: 581 [2023-04-02 06:42:18,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:42:18,837 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 107 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:18,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 399 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:42:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-04-02 06:42:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2023-04-02 06:42:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 575 states have (on average 1.5147826086956522) internal successors, (871), 575 states have internal predecessors, (871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 874 transitions. [2023-04-02 06:42:18,869 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 874 transitions. Word has length 92 [2023-04-02 06:42:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:18,869 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 874 transitions. [2023-04-02 06:42:18,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 874 transitions. [2023-04-02 06:42:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 06:42:18,870 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:18,870 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] [2023-04-02 06:42:18,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:42:18,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:18,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1063947070, now seen corresponding path program 1 times [2023-04-02 06:42:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:18,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770108864] [2023-04-02 06:42:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:18,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:19,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:19,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770108864] [2023-04-02 06:42:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770108864] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:19,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:19,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:42:19,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709846974] [2023-04-02 06:42:19,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:19,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:42:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:19,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:42:19,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:42:19,109 INFO L87 Difference]: Start difference. First operand 579 states and 874 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:19,655 INFO L93 Difference]: Finished difference Result 1559 states and 2404 transitions. [2023-04-02 06:42:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:42:19,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 93 [2023-04-02 06:42:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:19,659 INFO L225 Difference]: With dead ends: 1559 [2023-04-02 06:42:19,659 INFO L226 Difference]: Without dead ends: 1037 [2023-04-02 06:42:19,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:42:19,662 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 102 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:19,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 395 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:42:19,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-04-02 06:42:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1035. [2023-04-02 06:42:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1031 states have (on average 1.527643064985451) internal successors, (1575), 1031 states have internal predecessors, (1575), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1578 transitions. [2023-04-02 06:42:19,715 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1578 transitions. Word has length 93 [2023-04-02 06:42:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:19,715 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1578 transitions. [2023-04-02 06:42:19,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1578 transitions. [2023-04-02 06:42:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 06:42:19,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:19,716 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] [2023-04-02 06:42:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:42:19,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:19,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1485155560, now seen corresponding path program 1 times [2023-04-02 06:42:19,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:19,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850339868] [2023-04-02 06:42:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:19,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:19,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:19,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850339868] [2023-04-02 06:42:19,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850339868] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:19,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:19,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:42:19,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261119567] [2023-04-02 06:42:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:19,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:42:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:42:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:42:19,939 INFO L87 Difference]: Start difference. First operand 1035 states and 1578 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:20,534 INFO L93 Difference]: Finished difference Result 2863 states and 4412 transitions. [2023-04-02 06:42:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:42:20,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 94 [2023-04-02 06:42:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:20,540 INFO L225 Difference]: With dead ends: 2863 [2023-04-02 06:42:20,541 INFO L226 Difference]: Without dead ends: 1885 [2023-04-02 06:42:20,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:42:20,546 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 97 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:20,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 391 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:42:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2023-04-02 06:42:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1883. [2023-04-02 06:42:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1879 states have (on average 1.5279403938265035) internal successors, (2871), 1879 states have internal predecessors, (2871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2874 transitions. [2023-04-02 06:42:20,650 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2874 transitions. Word has length 94 [2023-04-02 06:42:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:20,651 INFO L495 AbstractCegarLoop]: Abstraction has 1883 states and 2874 transitions. [2023-04-02 06:42:20,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2874 transitions. [2023-04-02 06:42:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 06:42:20,652 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:20,652 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] [2023-04-02 06:42:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:42:20,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:20,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1174120321, now seen corresponding path program 1 times [2023-04-02 06:42:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893580988] [2023-04-02 06:42:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:20,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893580988] [2023-04-02 06:42:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893580988] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:20,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:42:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817720718] [2023-04-02 06:42:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:20,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:42:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:20,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:42:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:42:20,863 INFO L87 Difference]: Start difference. First operand 1883 states and 2874 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:21,507 INFO L93 Difference]: Finished difference Result 5279 states and 8092 transitions. [2023-04-02 06:42:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:42:21,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 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 95 [2023-04-02 06:42:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:21,519 INFO L225 Difference]: With dead ends: 5279 [2023-04-02 06:42:21,520 INFO L226 Difference]: Without dead ends: 3453 [2023-04-02 06:42:21,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:42:21,525 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 92 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:21,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 387 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:42:21,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2023-04-02 06:42:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3451. [2023-04-02 06:42:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 3447 states have (on average 1.5198723527705251) internal successors, (5239), 3447 states have internal predecessors, (5239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 5242 transitions. [2023-04-02 06:42:21,754 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 5242 transitions. Word has length 95 [2023-04-02 06:42:21,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:21,755 INFO L495 AbstractCegarLoop]: Abstraction has 3451 states and 5242 transitions. [2023-04-02 06:42:21,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:21,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 5242 transitions. [2023-04-02 06:42:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:42:21,755 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:21,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:42:21,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:42:21,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:21,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash 516753514, now seen corresponding path program 1 times [2023-04-02 06:42:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:21,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727572654] [2023-04-02 06:42:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:21,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:21,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:21,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727572654] [2023-04-02 06:42:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727572654] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:21,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:21,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:42:21,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786815270] [2023-04-02 06:42:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:21,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:42:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:42:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:42:21,973 INFO L87 Difference]: Start difference. First operand 3451 states and 5242 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:22,816 INFO L93 Difference]: Finished difference Result 9727 states and 14780 transitions. [2023-04-02 06:42:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:42:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2023-04-02 06:42:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:22,841 INFO L225 Difference]: With dead ends: 9727 [2023-04-02 06:42:22,841 INFO L226 Difference]: Without dead ends: 6333 [2023-04-02 06:42:22,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:42:22,851 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 87 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:22,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 383 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:42:22,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2023-04-02 06:42:23,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 6331. [2023-04-02 06:42:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 6327 states have (on average 1.5057689268215584) internal successors, (9527), 6327 states have internal predecessors, (9527), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 9530 transitions. [2023-04-02 06:42:23,282 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 9530 transitions. Word has length 96 [2023-04-02 06:42:23,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:23,282 INFO L495 AbstractCegarLoop]: Abstraction has 6331 states and 9530 transitions. [2023-04-02 06:42:23,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 9530 transitions. [2023-04-02 06:42:23,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:42:23,285 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:23,285 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] [2023-04-02 06:42:23,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:42:23,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:23,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:23,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1656355949, now seen corresponding path program 1 times [2023-04-02 06:42:23,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:23,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550689327] [2023-04-02 06:42:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:23,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550689327] [2023-04-02 06:42:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550689327] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:23,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:23,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:42:23,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986823079] [2023-04-02 06:42:23,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:23,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:42:23,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:42:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:42:23,600 INFO L87 Difference]: Start difference. First operand 6331 states and 9530 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:30,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:30,467 INFO L93 Difference]: Finished difference Result 94167 states and 142152 transitions. [2023-04-02 06:42:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:42:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 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 97 [2023-04-02 06:42:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:30,712 INFO L225 Difference]: With dead ends: 94167 [2023-04-02 06:42:30,713 INFO L226 Difference]: Without dead ends: 87893 [2023-04-02 06:42:30,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2023-04-02 06:42:30,753 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 2426 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:30,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2426 Valid, 3901 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:42:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87893 states. [2023-04-02 06:42:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87893 to 12603. [2023-04-02 06:42:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12603 states, 12599 states have (on average 1.4978172870862767) internal successors, (18871), 12599 states have internal predecessors, (18871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12603 states to 12603 states and 18874 transitions. [2023-04-02 06:42:33,157 INFO L78 Accepts]: Start accepts. Automaton has 12603 states and 18874 transitions. Word has length 97 [2023-04-02 06:42:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:33,158 INFO L495 AbstractCegarLoop]: Abstraction has 12603 states and 18874 transitions. [2023-04-02 06:42:33,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 9 states have internal predecessors, (94), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12603 states and 18874 transitions. [2023-04-02 06:42:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:42:33,158 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:33,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:42:33,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:42:33,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:33,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash 781610702, now seen corresponding path program 1 times [2023-04-02 06:42:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:33,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139249893] [2023-04-02 06:42:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:33,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139249893] [2023-04-02 06:42:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139249893] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:33,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:33,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:42:33,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816555007] [2023-04-02 06:42:33,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:42:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:42:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:42:33,384 INFO L87 Difference]: Start difference. First operand 12603 states and 18874 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:36,122 INFO L93 Difference]: Finished difference Result 31361 states and 47038 transitions. [2023-04-02 06:42:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:42:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:42:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:36,157 INFO L225 Difference]: With dead ends: 31361 [2023-04-02 06:42:36,158 INFO L226 Difference]: Without dead ends: 18815 [2023-04-02 06:42:36,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:42:36,186 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 81 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:36,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 347 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:42:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18815 states. [2023-04-02 06:42:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18815 to 18813. [2023-04-02 06:42:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4933808283268648) internal successors, (28089), 18809 states have internal predecessors, (28089), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 28092 transitions. [2023-04-02 06:42:38,650 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 28092 transitions. Word has length 99 [2023-04-02 06:42:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:38,651 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 28092 transitions. [2023-04-02 06:42:38,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 28092 transitions. [2023-04-02 06:42:38,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:42:38,652 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:38,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:42:38,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:42:38,652 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:38,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:38,653 INFO L85 PathProgramCache]: Analyzing trace with hash 801660045, now seen corresponding path program 1 times [2023-04-02 06:42:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:38,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530374535] [2023-04-02 06:42:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:39,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:39,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530374535] [2023-04-02 06:42:39,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530374535] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:39,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:39,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:42:39,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358068605] [2023-04-02 06:42:39,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:39,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:42:39,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:39,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:42:39,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:42:39,172 INFO L87 Difference]: Start difference. First operand 18813 states and 28092 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:42,137 INFO L93 Difference]: Finished difference Result 37569 states and 56126 transitions. [2023-04-02 06:42:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:42:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-04-02 06:42:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:42,166 INFO L225 Difference]: With dead ends: 37569 [2023-04-02 06:42:42,166 INFO L226 Difference]: Without dead ends: 18815 [2023-04-02 06:42:42,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-04-02 06:42:42,194 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 296 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:42,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 925 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:42:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18815 states. [2023-04-02 06:42:44,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18815 to 18813. [2023-04-02 06:42:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.483172949120102) internal successors, (27897), 18809 states have internal predecessors, (27897), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27900 transitions. [2023-04-02 06:42:44,675 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27900 transitions. Word has length 99 [2023-04-02 06:42:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:44,676 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27900 transitions. [2023-04-02 06:42:44,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27900 transitions. [2023-04-02 06:42:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:42:44,676 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:44,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:42:44,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:42:44,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:44,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:44,677 INFO L85 PathProgramCache]: Analyzing trace with hash -920251653, now seen corresponding path program 1 times [2023-04-02 06:42:44,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:44,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296024893] [2023-04-02 06:42:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:44,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:44,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:44,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296024893] [2023-04-02 06:42:44,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296024893] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:44,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:42:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346790003] [2023-04-02 06:42:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:44,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:42:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:44,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:42:44,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:42:44,968 INFO L87 Difference]: Start difference. First operand 18813 states and 27900 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:47,776 INFO L93 Difference]: Finished difference Result 37567 states and 55741 transitions. [2023-04-02 06:42:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:42:47,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 100 [2023-04-02 06:42:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:47,806 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:42:47,806 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:42:47,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:42:47,827 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 453 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:47,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 126 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:42:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:42:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:42:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4729650699133394) internal successors, (27705), 18809 states have internal predecessors, (27705), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:50,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27708 transitions. [2023-04-02 06:42:50,315 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27708 transitions. Word has length 100 [2023-04-02 06:42:50,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:50,315 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27708 transitions. [2023-04-02 06:42:50,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27708 transitions. [2023-04-02 06:42:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:42:50,316 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:50,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:42:50,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:42:50,316 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:50,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:50,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1633298528, now seen corresponding path program 1 times [2023-04-02 06:42:50,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:50,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126980344] [2023-04-02 06:42:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:50,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:50,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126980344] [2023-04-02 06:42:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126980344] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:42:50,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374337863] [2023-04-02 06:42:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:42:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:42:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:42:50,568 INFO L87 Difference]: Start difference. First operand 18813 states and 27708 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:53,544 INFO L93 Difference]: Finished difference Result 37567 states and 55357 transitions. [2023-04-02 06:42:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:42:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 100 [2023-04-02 06:42:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:53,571 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:42:53,571 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:42:53,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:42:53,587 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 437 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:53,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 134 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:42:53,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:42:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:42:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4627571907065766) internal successors, (27513), 18809 states have internal predecessors, (27513), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27516 transitions. [2023-04-02 06:42:56,176 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27516 transitions. Word has length 100 [2023-04-02 06:42:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:56,176 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27516 transitions. [2023-04-02 06:42:56,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27516 transitions. [2023-04-02 06:42:56,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:42:56,177 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:56,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:42:56,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:42:56,177 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:56,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:56,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2001569755, now seen corresponding path program 1 times [2023-04-02 06:42:56,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:56,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548680311] [2023-04-02 06:42:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:56,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:56,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:56,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548680311] [2023-04-02 06:42:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548680311] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:56,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:42:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144807708] [2023-04-02 06:42:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:56,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:42:56,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:42:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:42:56,428 INFO L87 Difference]: Start difference. First operand 18813 states and 27516 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:42:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:59,412 INFO L93 Difference]: Finished difference Result 37567 states and 54973 transitions. [2023-04-02 06:42:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:42:59,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 100 [2023-04-02 06:42:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:59,448 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:42:59,449 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:42:59,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:42:59,471 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 382 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:59,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 166 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:42:59,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:43:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:43:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4525493114998138) internal successors, (27321), 18809 states have internal predecessors, (27321), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27324 transitions. [2023-04-02 06:43:02,259 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27324 transitions. Word has length 100 [2023-04-02 06:43:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:02,260 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27324 transitions. [2023-04-02 06:43:02,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27324 transitions. [2023-04-02 06:43:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:43:02,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:02,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:02,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:43:02,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:02,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:02,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1472279254, now seen corresponding path program 1 times [2023-04-02 06:43:02,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271967647] [2023-04-02 06:43:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:02,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:43:02,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:02,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271967647] [2023-04-02 06:43:02,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271967647] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:02,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:02,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:02,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176278311] [2023-04-02 06:43:02,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:02,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:02,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:02,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:02,513 INFO L87 Difference]: Start difference. First operand 18813 states and 27324 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:05,653 INFO L93 Difference]: Finished difference Result 37567 states and 54589 transitions. [2023-04-02 06:43:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:05,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 100 [2023-04-02 06:43:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:05,681 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:43:05,682 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:43:05,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:43:05,703 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 418 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:05,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 142 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:43:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:43:08,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:43:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4423414322930512) internal successors, (27129), 18809 states have internal predecessors, (27129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 27132 transitions. [2023-04-02 06:43:08,610 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 27132 transitions. Word has length 100 [2023-04-02 06:43:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:08,610 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 27132 transitions. [2023-04-02 06:43:08,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 27132 transitions. [2023-04-02 06:43:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:43:08,611 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:08,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:08,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:43:08,611 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:08,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:08,611 INFO L85 PathProgramCache]: Analyzing trace with hash 709415547, now seen corresponding path program 1 times [2023-04-02 06:43:08,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:08,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022085159] [2023-04-02 06:43:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:08,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:08,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:43:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022085159] [2023-04-02 06:43:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022085159] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:08,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:08,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:43:08,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072467942] [2023-04-02 06:43:08,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:08,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:08,859 INFO L87 Difference]: Start difference. First operand 18813 states and 27132 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:12,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:12,132 INFO L93 Difference]: Finished difference Result 37567 states and 54205 transitions. [2023-04-02 06:43:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:12,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 100 [2023-04-02 06:43:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:12,159 INFO L225 Difference]: With dead ends: 37567 [2023-04-02 06:43:12,160 INFO L226 Difference]: Without dead ends: 18813 [2023-04-02 06:43:12,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:43:12,180 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 402 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:12,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 150 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 06:43:12,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2023-04-02 06:43:15,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 18813. [2023-04-02 06:43:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18813 states, 18809 states have (on average 1.4321335530862884) internal successors, (26937), 18809 states have internal predecessors, (26937), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18813 states to 18813 states and 26940 transitions. [2023-04-02 06:43:15,172 INFO L78 Accepts]: Start accepts. Automaton has 18813 states and 26940 transitions. Word has length 100 [2023-04-02 06:43:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:15,172 INFO L495 AbstractCegarLoop]: Abstraction has 18813 states and 26940 transitions. [2023-04-02 06:43:15,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 18813 states and 26940 transitions. [2023-04-02 06:43:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:43:15,173 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:15,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:15,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:43:15,173 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:15,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 837500854, now seen corresponding path program 1 times [2023-04-02 06:43:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936258404] [2023-04-02 06:43:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:43:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936258404] [2023-04-02 06:43:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936258404] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:15,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:15,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:43:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194874585] [2023-04-02 06:43:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:43:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:43:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:43:15,533 INFO L87 Difference]: Start difference. First operand 18813 states and 26940 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:20,273 INFO L93 Difference]: Finished difference Result 27697 states and 39513 transitions. [2023-04-02 06:43:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:43:20,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-04-02 06:43:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:20,314 INFO L225 Difference]: With dead ends: 27697 [2023-04-02 06:43:20,314 INFO L226 Difference]: Without dead ends: 27695 [2023-04-02 06:43:20,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:43:20,324 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 225 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:20,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 796 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:43:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27695 states. [2023-04-02 06:43:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27695 to 19069. [2023-04-02 06:43:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19069 states, 19065 states have (on average 1.416260162601626) internal successors, (27001), 19065 states have internal predecessors, (27001), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19069 states to 19069 states and 27004 transitions. [2023-04-02 06:43:23,641 INFO L78 Accepts]: Start accepts. Automaton has 19069 states and 27004 transitions. Word has length 100 [2023-04-02 06:43:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:23,641 INFO L495 AbstractCegarLoop]: Abstraction has 19069 states and 27004 transitions. [2023-04-02 06:43:23,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 19069 states and 27004 transitions. [2023-04-02 06:43:23,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:43:23,648 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:23,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:23,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:43:23,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:23,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:23,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1214680255, now seen corresponding path program 1 times [2023-04-02 06:43:23,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:23,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132168864] [2023-04-02 06:43:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:23,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 06:43:23,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:23,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132168864] [2023-04-02 06:43:23,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132168864] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:23,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:23,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:23,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248273776] [2023-04-02 06:43:23,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:23,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:23,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:23,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:23,936 INFO L87 Difference]: Start difference. First operand 19069 states and 27004 transitions. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 9 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:43:50,158 INFO L93 Difference]: Finished difference Result 149131 states and 211171 transitions. [2023-04-02 06:43:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:43:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 9 states have internal predecessors, (130), 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 134 [2023-04-02 06:43:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:43:50,546 INFO L225 Difference]: With dead ends: 149131 [2023-04-02 06:43:50,546 INFO L226 Difference]: Without dead ends: 136329 [2023-04-02 06:43:50,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:43:50,586 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2025 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:43:50,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 1934 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:43:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136329 states. [2023-04-02 06:43:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136329 to 35005. [2023-04-02 06:43:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35005 states, 35001 states have (on average 1.410502557069798) internal successors, (49369), 35001 states have internal predecessors, (49369), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35005 states to 35005 states and 49372 transitions. [2023-04-02 06:43:59,447 INFO L78 Accepts]: Start accepts. Automaton has 35005 states and 49372 transitions. Word has length 134 [2023-04-02 06:43:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:43:59,447 INFO L495 AbstractCegarLoop]: Abstraction has 35005 states and 49372 transitions. [2023-04-02 06:43:59,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 9 states have internal predecessors, (130), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:43:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 35005 states and 49372 transitions. [2023-04-02 06:43:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:43:59,456 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:43:59,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:43:59,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:43:59,456 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:43:59,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:43:59,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1234257403, now seen corresponding path program 1 times [2023-04-02 06:43:59,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:43:59,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908625216] [2023-04-02 06:43:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:43:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:43:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:43:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:43:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 06:43:59,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:43:59,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908625216] [2023-04-02 06:43:59,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908625216] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:43:59,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:43:59,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:43:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794525648] [2023-04-02 06:43:59,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:43:59,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:43:59,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:43:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:43:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:43:59,886 INFO L87 Difference]: Start difference. First operand 35005 states and 49372 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:44:37,178 INFO L93 Difference]: Finished difference Result 168139 states and 237987 transitions. [2023-04-02 06:44:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:44:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 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 134 [2023-04-02 06:44:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:44:37,477 INFO L225 Difference]: With dead ends: 168139 [2023-04-02 06:44:37,477 INFO L226 Difference]: Without dead ends: 149129 [2023-04-02 06:44:37,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:44:37,531 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 2023 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:44:37,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 1893 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:44:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149129 states. [2023-04-02 06:44:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149129 to 60285. [2023-04-02 06:44:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60285 states, 60281 states have (on average 1.4082214959937625) internal successors, (84889), 60281 states have internal predecessors, (84889), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60285 states to 60285 states and 84892 transitions. [2023-04-02 06:44:55,121 INFO L78 Accepts]: Start accepts. Automaton has 60285 states and 84892 transitions. Word has length 134 [2023-04-02 06:44:55,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:44:55,121 INFO L495 AbstractCegarLoop]: Abstraction has 60285 states and 84892 transitions. [2023-04-02 06:44:55,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 9 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:44:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 60285 states and 84892 transitions. [2023-04-02 06:44:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:44:55,131 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:44:55,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:44:55,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:44:55,131 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:44:55,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:44:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2126005731, now seen corresponding path program 1 times [2023-04-02 06:44:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:44:55,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912212202] [2023-04-02 06:44:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:44:55,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:44:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:44:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:44:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 06:44:55,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:44:55,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912212202] [2023-04-02 06:44:55,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912212202] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:44:55,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:44:55,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:44:55,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648361781] [2023-04-02 06:44:55,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:44:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:44:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:44:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:44:55,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:44:55,427 INFO L87 Difference]: Start difference. First operand 60285 states and 84892 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 9 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:45:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:45:42,756 INFO L93 Difference]: Finished difference Result 187147 states and 264739 transitions. [2023-04-02 06:45:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 06:45:42,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 9 states have internal predecessors, (125), 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 134 [2023-04-02 06:45:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:45:43,093 INFO L225 Difference]: With dead ends: 187147 [2023-04-02 06:45:43,093 INFO L226 Difference]: Without dead ends: 168137 [2023-04-02 06:45:43,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:45:43,141 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 2123 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:45:43,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 2045 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:45:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168137 states. [2023-04-02 06:46:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168137 to 79293. [2023-04-02 06:46:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79293 states, 79289 states have (on average 1.4080263340438144) internal successors, (111641), 79289 states have internal predecessors, (111641), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79293 states to 79293 states and 111644 transitions. [2023-04-02 06:46:06,598 INFO L78 Accepts]: Start accepts. Automaton has 79293 states and 111644 transitions. Word has length 134 [2023-04-02 06:46:06,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:46:06,598 INFO L495 AbstractCegarLoop]: Abstraction has 79293 states and 111644 transitions. [2023-04-02 06:46:06,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 9 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:46:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 79293 states and 111644 transitions. [2023-04-02 06:46:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-02 06:46:06,609 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:46:06,610 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:46:06,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:46:06,610 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:46:06,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:46:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2102260509, now seen corresponding path program 1 times [2023-04-02 06:46:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:46:06,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71803990] [2023-04-02 06:46:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:46:06,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:46:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:46:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:46:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 06:46:06,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:46:06,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71803990] [2023-04-02 06:46:06,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71803990] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:46:06,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:46:06,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:46:06,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982933819] [2023-04-02 06:46:06,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:46:06,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:46:06,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:46:06,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:46:06,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:46:06,901 INFO L87 Difference]: Start difference. First operand 79293 states and 111644 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)