/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/pals_lcr.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:18:13,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:18:13,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:18:13,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:18:13,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:18:13,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:18:13,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:18:13,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:18:13,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:18:13,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:18:13,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:18:13,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:18:13,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:18:13,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:18:13,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:18:13,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:18:13,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:18:13,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:18:13,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:18:13,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:18:13,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:18:13,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:18:13,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:18:13,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:18:13,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:18:13,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:18:13,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:18:13,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:18:13,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:18:13,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:18:13,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:18:13,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:18:13,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:18:13,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:18:13,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:18:13,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:18:13,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:18:13,822 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:18:13,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:18:13,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:18:13,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:18:13,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:18:13,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:18:13,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:18:13,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:18:13,825 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:18:13,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:18:13,825 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:18:13,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:18:13,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:18:13,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:18:13,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:18:13,828 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:18:13,828 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:18:14,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:18:14,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:18:14,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:18:14,040 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:18:14,040 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:18:14,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:18:15,048 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:18:15,256 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:18:15,256 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:18:15,264 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b3145e1/78209118cd2e48638e5c92086431efd1/FLAG6594d238c [2023-04-02 05:18:15,276 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b3145e1/78209118cd2e48638e5c92086431efd1 [2023-04-02 05:18:15,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:18:15,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:18:15,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:18:15,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:18:15,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:18:15,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4e9303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15, skipping insertion in model container [2023-04-02 05:18:15,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:18:15,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:18:15,474 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/pals_lcr.5.ufo.UNBOUNDED.pals.c[11261,11274] [2023-04-02 05:18:15,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:18:15,487 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:18:15,532 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/pals_lcr.5.ufo.UNBOUNDED.pals.c[11261,11274] [2023-04-02 05:18:15,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:18:15,550 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:18:15,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15 WrapperNode [2023-04-02 05:18:15,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:18:15,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:18:15,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:18:15,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:18:15,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,591 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:18:15,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:18:15,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:18:15,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:18:15,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (1/1) ... [2023-04-02 05:18:15,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:18:15,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:15,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:18:15,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:18:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:18:15,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:18:15,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:18:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:18:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:18:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:18:15,762 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:18:15,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:18:16,114 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:18:16,119 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:18:16,119 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:18:16,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:18:16 BoogieIcfgContainer [2023-04-02 05:18:16,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:18:16,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:18:16,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:18:16,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:18:16,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:18:15" (1/3) ... [2023-04-02 05:18:16,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a81360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:18:16, skipping insertion in model container [2023-04-02 05:18:16,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:18:15" (2/3) ... [2023-04-02 05:18:16,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a81360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:18:16, skipping insertion in model container [2023-04-02 05:18:16,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:18:16" (3/3) ... [2023-04-02 05:18:16,126 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:18:16,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:18:16,137 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:18:16,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:18:16,181 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;@76feb630, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:18:16,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:18:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 97 states have (on average 1.6391752577319587) internal successors, (159), 99 states have internal predecessors, (159), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:18:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 05:18:16,194 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:16,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:18:16,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:16,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash -642962173, now seen corresponding path program 1 times [2023-04-02 05:18:16,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:16,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499839242] [2023-04-02 05:18:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:18:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:18:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:18:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:18:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:18:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:18:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:18:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:16,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:16,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499839242] [2023-04-02 05:18:16,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499839242] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:16,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:16,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:18:16,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293690956] [2023-04-02 05:18:16,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:16,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:18:16,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:18:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:18:16,823 INFO L87 Difference]: Start difference. First operand has 121 states, 97 states have (on average 1.6391752577319587) internal successors, (159), 99 states have internal predecessors, (159), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:17,491 INFO L93 Difference]: Finished difference Result 192 states and 282 transitions. [2023-04-02 05:18:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 05:18:17,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 57 [2023-04-02 05:18:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:17,498 INFO L225 Difference]: With dead ends: 192 [2023-04-02 05:18:17,498 INFO L226 Difference]: Without dead ends: 117 [2023-04-02 05:18:17,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:18:17,503 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 669 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:17,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 53 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:18:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-04-02 05:18:17,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2023-04-02 05:18:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.6170212765957446) internal successors, (152), 95 states have internal predecessors, (152), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:18:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 173 transitions. [2023-04-02 05:18:17,540 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 173 transitions. Word has length 57 [2023-04-02 05:18:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:17,540 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 173 transitions. [2023-04-02 05:18:17,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 173 transitions. [2023-04-02 05:18:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 05:18:17,542 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:17,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:18:17,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:18:17,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:17,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:17,543 INFO L85 PathProgramCache]: Analyzing trace with hash -394815679, now seen corresponding path program 1 times [2023-04-02 05:18:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394972475] [2023-04-02 05:18:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:17,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:18:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:18:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:18:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:18:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:18:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:18:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:18:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:17,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:17,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394972475] [2023-04-02 05:18:17,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394972475] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:17,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:17,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:18:17,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710523875] [2023-04-02 05:18:17,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:17,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:18:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:17,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:18:17,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:18:17,907 INFO L87 Difference]: Start difference. First operand 116 states and 173 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:18:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:18,965 INFO L93 Difference]: Finished difference Result 190 states and 274 transitions. [2023-04-02 05:18:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:18:18,965 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 57 [2023-04-02 05:18:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:18,966 INFO L225 Difference]: With dead ends: 190 [2023-04-02 05:18:18,967 INFO L226 Difference]: Without dead ends: 117 [2023-04-02 05:18:18,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:18:18,968 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 686 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:18,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 144 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:18:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-04-02 05:18:18,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2023-04-02 05:18:18,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 95 states have internal predecessors, (121), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:18:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2023-04-02 05:18:18,999 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 57 [2023-04-02 05:18:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:18,999 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2023-04-02 05:18:18,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:18:18,999 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2023-04-02 05:18:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 05:18:19,000 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:19,000 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] [2023-04-02 05:18:19,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:18:19,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:19,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:19,001 INFO L85 PathProgramCache]: Analyzing trace with hash 435796952, now seen corresponding path program 1 times [2023-04-02 05:18:19,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:19,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188632130] [2023-04-02 05:18:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:19,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:19,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188632130] [2023-04-02 05:18:19,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188632130] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:19,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:19,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:18:19,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228334726] [2023-04-02 05:18:19,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:19,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:18:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:19,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:18:19,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:18:19,580 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:27,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:27,300 INFO L93 Difference]: Finished difference Result 1164 states and 1644 transitions. [2023-04-02 05:18:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-04-02 05:18:27,300 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-04-02 05:18:27,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:27,309 INFO L225 Difference]: With dead ends: 1164 [2023-04-02 05:18:27,309 INFO L226 Difference]: Without dead ends: 1097 [2023-04-02 05:18:27,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6570 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2884, Invalid=15206, Unknown=0, NotChecked=0, Total=18090 [2023-04-02 05:18:27,324 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 3591 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3604 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:27,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3604 Valid, 266 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 05:18:27,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2023-04-02 05:18:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 463. [2023-04-02 05:18:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 361 states have (on average 1.4099722991689752) internal successors, (509), 372 states have internal predecessors, (509), 46 states have call successors, (46), 46 states have call predecessors, (46), 55 states have return successors, (79), 45 states have call predecessors, (79), 45 states have call successors, (79) [2023-04-02 05:18:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 634 transitions. [2023-04-02 05:18:27,436 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 634 transitions. Word has length 87 [2023-04-02 05:18:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:27,437 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 634 transitions. [2023-04-02 05:18:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 634 transitions. [2023-04-02 05:18:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 05:18:27,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:27,449 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] [2023-04-02 05:18:27,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:18:27,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:27,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash 469318344, now seen corresponding path program 1 times [2023-04-02 05:18:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:27,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899199248] [2023-04-02 05:18:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:27,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:27,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:27,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899199248] [2023-04-02 05:18:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899199248] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:27,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:27,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:18:27,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494348720] [2023-04-02 05:18:27,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:27,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:18:27,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:18:27,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:18:27,711 INFO L87 Difference]: Start difference. First operand 463 states and 634 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-02 05:18:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:28,654 INFO L93 Difference]: Finished difference Result 1257 states and 1766 transitions. [2023-04-02 05:18:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 05:18:28,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 89 [2023-04-02 05:18:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:28,659 INFO L225 Difference]: With dead ends: 1257 [2023-04-02 05:18:28,660 INFO L226 Difference]: Without dead ends: 843 [2023-04-02 05:18:28,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:18:28,670 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 402 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:28,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 93 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:18:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-04-02 05:18:28,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 823. [2023-04-02 05:18:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 629 states have (on average 1.4069952305246423) internal successors, (885), 648 states have internal predecessors, (885), 88 states have call successors, (88), 88 states have call predecessors, (88), 105 states have return successors, (165), 87 states have call predecessors, (165), 87 states have call successors, (165) [2023-04-02 05:18:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1138 transitions. [2023-04-02 05:18:28,764 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1138 transitions. Word has length 89 [2023-04-02 05:18:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:28,766 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1138 transitions. [2023-04-02 05:18:28,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-02 05:18:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1138 transitions. [2023-04-02 05:18:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 05:18:28,767 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:28,767 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] [2023-04-02 05:18:28,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:18:28,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:28,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:28,767 INFO L85 PathProgramCache]: Analyzing trace with hash -818384112, now seen corresponding path program 1 times [2023-04-02 05:18:28,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:28,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26049940] [2023-04-02 05:18:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:28,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:29,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26049940] [2023-04-02 05:18:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26049940] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:29,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:29,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:18:29,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315315593] [2023-04-02 05:18:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:29,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:18:29,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:18:29,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:18:29,388 INFO L87 Difference]: Start difference. First operand 823 states and 1138 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:37,593 INFO L93 Difference]: Finished difference Result 3248 states and 4613 transitions. [2023-04-02 05:18:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-04-02 05:18:37,594 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2023-04-02 05:18:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:37,603 INFO L225 Difference]: With dead ends: 3248 [2023-04-02 05:18:37,603 INFO L226 Difference]: Without dead ends: 2474 [2023-04-02 05:18:37,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6385 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2787, Invalid=14505, Unknown=0, NotChecked=0, Total=17292 [2023-04-02 05:18:37,609 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 3325 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3338 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:37,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3338 Valid, 283 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 05:18:37,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2023-04-02 05:18:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2389. [2023-04-02 05:18:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 1828 states have (on average 1.438730853391685) internal successors, (2630), 1866 states have internal predecessors, (2630), 262 states have call successors, (262), 262 states have call predecessors, (262), 298 states have return successors, (514), 261 states have call predecessors, (514), 261 states have call successors, (514) [2023-04-02 05:18:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3406 transitions. [2023-04-02 05:18:37,877 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3406 transitions. Word has length 89 [2023-04-02 05:18:37,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:37,877 INFO L495 AbstractCegarLoop]: Abstraction has 2389 states and 3406 transitions. [2023-04-02 05:18:37,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:37,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3406 transitions. [2023-04-02 05:18:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 05:18:37,882 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:37,882 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 05:18:37,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:18:37,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:37,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:37,883 INFO L85 PathProgramCache]: Analyzing trace with hash 930305436, now seen corresponding path program 1 times [2023-04-02 05:18:37,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:37,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482065608] [2023-04-02 05:18:37,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:37,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482065608] [2023-04-02 05:18:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482065608] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:38,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:38,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:18:38,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983983104] [2023-04-02 05:18:38,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:38,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:18:38,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:38,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:18:38,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:18:38,279 INFO L87 Difference]: Start difference. First operand 2389 states and 3406 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:39,937 INFO L93 Difference]: Finished difference Result 5627 states and 8070 transitions. [2023-04-02 05:18:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:18:39,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2023-04-02 05:18:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:39,951 INFO L225 Difference]: With dead ends: 5627 [2023-04-02 05:18:39,951 INFO L226 Difference]: Without dead ends: 3287 [2023-04-02 05:18:39,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:18:39,958 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 942 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:39,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 97 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:18:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2023-04-02 05:18:40,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3222. [2023-04-02 05:18:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 2450 states have (on average 1.4293877551020409) internal successors, (3502), 2513 states have internal predecessors, (3502), 355 states have call successors, (355), 355 states have call predecessors, (355), 416 states have return successors, (710), 354 states have call predecessors, (710), 354 states have call successors, (710) [2023-04-02 05:18:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4567 transitions. [2023-04-02 05:18:40,339 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4567 transitions. Word has length 90 [2023-04-02 05:18:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:40,340 INFO L495 AbstractCegarLoop]: Abstraction has 3222 states and 4567 transitions. [2023-04-02 05:18:40,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4567 transitions. [2023-04-02 05:18:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 05:18:40,341 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:40,342 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 05:18:40,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:18:40,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:40,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1717236899, now seen corresponding path program 1 times [2023-04-02 05:18:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:40,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542014931] [2023-04-02 05:18:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:40,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542014931] [2023-04-02 05:18:40,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542014931] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:40,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:40,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:18:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818872373] [2023-04-02 05:18:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:40,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:18:40,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:18:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:18:40,800 INFO L87 Difference]: Start difference. First operand 3222 states and 4567 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:42,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:42,581 INFO L93 Difference]: Finished difference Result 3508 states and 5169 transitions. [2023-04-02 05:18:42,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 05:18:42,581 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2023-04-02 05:18:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:42,595 INFO L225 Difference]: With dead ends: 3508 [2023-04-02 05:18:42,595 INFO L226 Difference]: Without dead ends: 3506 [2023-04-02 05:18:42,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:18:42,596 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 286 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:42,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 303 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:18:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2023-04-02 05:18:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3267. [2023-04-02 05:18:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3267 states, 2480 states have (on average 1.4205645161290323) internal successors, (3523), 2548 states have internal predecessors, (3523), 360 states have call successors, (360), 360 states have call predecessors, (360), 426 states have return successors, (725), 359 states have call predecessors, (725), 359 states have call successors, (725) [2023-04-02 05:18:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 4608 transitions. [2023-04-02 05:18:42,984 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 4608 transitions. Word has length 90 [2023-04-02 05:18:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:42,985 INFO L495 AbstractCegarLoop]: Abstraction has 3267 states and 4608 transitions. [2023-04-02 05:18:42,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:18:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 4608 transitions. [2023-04-02 05:18:42,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:18:42,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:42,987 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 05:18:42,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:18:42,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:42,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1132431712, now seen corresponding path program 1 times [2023-04-02 05:18:42,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:42,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237673826] [2023-04-02 05:18:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:42,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:18:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:18:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:18:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237673826] [2023-04-02 05:18:43,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237673826] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:43,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:43,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418231588] [2023-04-02 05:18:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:43,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:43,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:43,277 INFO L87 Difference]: Start difference. First operand 3267 states and 4608 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:45,410 INFO L93 Difference]: Finished difference Result 8351 states and 11785 transitions. [2023-04-02 05:18:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:45,410 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:18:45,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:45,428 INFO L225 Difference]: With dead ends: 8351 [2023-04-02 05:18:45,428 INFO L226 Difference]: Without dead ends: 5133 [2023-04-02 05:18:45,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:45,435 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 998 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:45,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 67 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:18:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5133 states. [2023-04-02 05:18:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5133 to 3344. [2023-04-02 05:18:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2534 states have (on average 1.4191002367797947) internal successors, (3596), 2611 states have internal predecessors, (3596), 367 states have call successors, (367), 367 states have call predecessors, (367), 442 states have return successors, (746), 365 states have call predecessors, (746), 366 states have call successors, (746) [2023-04-02 05:18:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4709 transitions. [2023-04-02 05:18:45,853 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4709 transitions. Word has length 91 [2023-04-02 05:18:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:45,854 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 4709 transitions. [2023-04-02 05:18:45,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4709 transitions. [2023-04-02 05:18:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:18:45,856 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:45,856 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 05:18:45,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:18:45,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:45,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:45,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1061528752, now seen corresponding path program 1 times [2023-04-02 05:18:45,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:45,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846229432] [2023-04-02 05:18:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:45,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:18:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:18:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:46,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:46,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846229432] [2023-04-02 05:18:46,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846229432] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:46,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:46,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646327313] [2023-04-02 05:18:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:46,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:46,197 INFO L87 Difference]: Start difference. First operand 3344 states and 4709 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:48,139 INFO L93 Difference]: Finished difference Result 8020 states and 11244 transitions. [2023-04-02 05:18:48,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:48,140 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:18:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:48,155 INFO L225 Difference]: With dead ends: 8020 [2023-04-02 05:18:48,155 INFO L226 Difference]: Without dead ends: 4739 [2023-04-02 05:18:48,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:48,162 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1063 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:48,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 66 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:18:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2023-04-02 05:18:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 3407. [2023-04-02 05:18:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 2581 states have (on average 1.418442464161178) internal successors, (3661), 2662 states have internal predecessors, (3661), 373 states have call successors, (373), 373 states have call predecessors, (373), 452 states have return successors, (758), 371 states have call predecessors, (758), 372 states have call successors, (758) [2023-04-02 05:18:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4792 transitions. [2023-04-02 05:18:48,602 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4792 transitions. Word has length 91 [2023-04-02 05:18:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:48,603 INFO L495 AbstractCegarLoop]: Abstraction has 3407 states and 4792 transitions. [2023-04-02 05:18:48,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4792 transitions. [2023-04-02 05:18:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:18:48,604 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:48,604 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 05:18:48,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:18:48,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:48,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash 797986400, now seen corresponding path program 1 times [2023-04-02 05:18:48,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:48,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582066218] [2023-04-02 05:18:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:18:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:48,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:48,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582066218] [2023-04-02 05:18:48,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582066218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:48,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:48,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:48,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128518373] [2023-04-02 05:18:48,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:48,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:48,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:48,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:48,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:48,894 INFO L87 Difference]: Start difference. First operand 3407 states and 4792 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:51,129 INFO L93 Difference]: Finished difference Result 7614 states and 10626 transitions. [2023-04-02 05:18:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:51,130 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:18:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:51,148 INFO L225 Difference]: With dead ends: 7614 [2023-04-02 05:18:51,148 INFO L226 Difference]: Without dead ends: 4297 [2023-04-02 05:18:51,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:51,154 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 974 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:51,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 67 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:18:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2023-04-02 05:18:51,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3470. [2023-04-02 05:18:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3470 states, 2628 states have (on average 1.417808219178082) internal successors, (3726), 2713 states have internal predecessors, (3726), 379 states have call successors, (379), 379 states have call predecessors, (379), 462 states have return successors, (770), 377 states have call predecessors, (770), 378 states have call successors, (770) [2023-04-02 05:18:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 4875 transitions. [2023-04-02 05:18:51,632 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 4875 transitions. Word has length 91 [2023-04-02 05:18:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:51,632 INFO L495 AbstractCegarLoop]: Abstraction has 3470 states and 4875 transitions. [2023-04-02 05:18:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 4875 transitions. [2023-04-02 05:18:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:18:51,634 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:51,634 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 05:18:51,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:18:51,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:51,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1097882576, now seen corresponding path program 1 times [2023-04-02 05:18:51,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:51,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511566735] [2023-04-02 05:18:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:51,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511566735] [2023-04-02 05:18:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511566735] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:51,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828046475] [2023-04-02 05:18:51,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:51,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:51,934 INFO L87 Difference]: Start difference. First operand 3470 states and 4875 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:54,097 INFO L93 Difference]: Finished difference Result 7208 states and 10008 transitions. [2023-04-02 05:18:54,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:54,098 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:18:54,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:54,113 INFO L225 Difference]: With dead ends: 7208 [2023-04-02 05:18:54,114 INFO L226 Difference]: Without dead ends: 3855 [2023-04-02 05:18:54,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:54,121 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1168 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:54,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 62 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:18:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2023-04-02 05:18:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3497. [2023-04-02 05:18:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 2649 states have (on average 1.4167610419026047) internal successors, (3753), 2734 states have internal predecessors, (3753), 382 states have call successors, (382), 382 states have call predecessors, (382), 465 states have return successors, (773), 380 states have call predecessors, (773), 381 states have call successors, (773) [2023-04-02 05:18:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 4908 transitions. [2023-04-02 05:18:54,604 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 4908 transitions. Word has length 91 [2023-04-02 05:18:54,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:54,604 INFO L495 AbstractCegarLoop]: Abstraction has 3497 states and 4908 transitions. [2023-04-02 05:18:54,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 4908 transitions. [2023-04-02 05:18:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 05:18:54,605 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:54,605 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 05:18:54,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:18:54,605 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:54,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash 196699851, now seen corresponding path program 1 times [2023-04-02 05:18:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:54,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664638227] [2023-04-02 05:18:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:54,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:18:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:18:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:18:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:18:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:54,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:54,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664638227] [2023-04-02 05:18:54,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664638227] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:54,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:54,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:54,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834492301] [2023-04-02 05:18:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:54,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:54,874 INFO L87 Difference]: Start difference. First operand 3497 states and 4908 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:57,016 INFO L93 Difference]: Finished difference Result 6739 states and 9530 transitions. [2023-04-02 05:18:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:57,017 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 93 [2023-04-02 05:18:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:57,025 INFO L225 Difference]: With dead ends: 6739 [2023-04-02 05:18:57,025 INFO L226 Difference]: Without dead ends: 4242 [2023-04-02 05:18:57,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:57,029 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1035 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:57,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 63 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:18:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4242 states. [2023-04-02 05:18:57,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4242 to 3781. [2023-04-02 05:18:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 2870 states have (on average 1.4278745644599302) internal successors, (4098), 2960 states have internal predecessors, (4098), 411 states have call successors, (411), 411 states have call predecessors, (411), 499 states have return successors, (830), 409 states have call predecessors, (830), 410 states have call successors, (830) [2023-04-02 05:18:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5339 transitions. [2023-04-02 05:18:57,541 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5339 transitions. Word has length 93 [2023-04-02 05:18:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:57,541 INFO L495 AbstractCegarLoop]: Abstraction has 3781 states and 5339 transitions. [2023-04-02 05:18:57,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5339 transitions. [2023-04-02 05:18:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 05:18:57,542 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:57,542 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 05:18:57,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:18:57,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:57,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:57,542 INFO L85 PathProgramCache]: Analyzing trace with hash -557662445, now seen corresponding path program 1 times [2023-04-02 05:18:57,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:57,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803443456] [2023-04-02 05:18:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:57,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:18:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:18:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:18:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:18:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:57,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:57,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803443456] [2023-04-02 05:18:57,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803443456] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:57,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:57,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:18:57,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808384801] [2023-04-02 05:18:57,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:57,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:18:57,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:18:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:18:57,829 INFO L87 Difference]: Start difference. First operand 3781 states and 5339 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:18:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:59,655 INFO L93 Difference]: Finished difference Result 7451 states and 10559 transitions. [2023-04-02 05:18:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:18:59,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2023-04-02 05:18:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:59,670 INFO L225 Difference]: With dead ends: 7451 [2023-04-02 05:18:59,670 INFO L226 Difference]: Without dead ends: 4672 [2023-04-02 05:18:59,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-04-02 05:18:59,677 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 709 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:59,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 95 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:18:59,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2023-04-02 05:19:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 4648. [2023-04-02 05:19:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 3516 states have (on average 1.4061433447098977) internal successors, (4944), 3599 states have internal predecessors, (4944), 525 states have call successors, (525), 525 states have call predecessors, (525), 606 states have return successors, (1017), 523 states have call predecessors, (1017), 524 states have call successors, (1017) [2023-04-02 05:19:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 6486 transitions. [2023-04-02 05:19:00,316 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 6486 transitions. Word has length 94 [2023-04-02 05:19:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:00,317 INFO L495 AbstractCegarLoop]: Abstraction has 4648 states and 6486 transitions. [2023-04-02 05:19:00,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:19:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 6486 transitions. [2023-04-02 05:19:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 05:19:00,319 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:00,319 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:00,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:19:00,319 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:00,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1336343266, now seen corresponding path program 1 times [2023-04-02 05:19:00,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:00,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235256269] [2023-04-02 05:19:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:00,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:19:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:19:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:19:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:19:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:19:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:19:00,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:00,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235256269] [2023-04-02 05:19:00,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235256269] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:00,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475125892] [2023-04-02 05:19:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:00,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:00,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:00,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:19:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:00,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:19:00,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:19:01,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:19:01,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475125892] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:01,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:19:01,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [19] total 31 [2023-04-02 05:19:01,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381253018] [2023-04-02 05:19:01,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:01,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:19:01,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:19:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-04-02 05:19:01,827 INFO L87 Difference]: Start difference. First operand 4648 states and 6486 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:19:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:03,634 INFO L93 Difference]: Finished difference Result 9235 states and 12953 transitions. [2023-04-02 05:19:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:19:03,635 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2023-04-02 05:19:03,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:03,651 INFO L225 Difference]: With dead ends: 9235 [2023-04-02 05:19:03,651 INFO L226 Difference]: Without dead ends: 7432 [2023-04-02 05:19:03,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:19:03,655 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 951 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:03,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 596 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:19:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2023-04-02 05:19:04,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7422. [2023-04-02 05:19:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7422 states, 5618 states have (on average 1.4106443574225702) internal successors, (7925), 5741 states have internal predecessors, (7925), 841 states have call successors, (841), 841 states have call predecessors, (841), 962 states have return successors, (1640), 839 states have call predecessors, (1640), 840 states have call successors, (1640) [2023-04-02 05:19:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7422 states to 7422 states and 10406 transitions. [2023-04-02 05:19:04,710 INFO L78 Accepts]: Start accepts. Automaton has 7422 states and 10406 transitions. Word has length 133 [2023-04-02 05:19:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:04,710 INFO L495 AbstractCegarLoop]: Abstraction has 7422 states and 10406 transitions. [2023-04-02 05:19:04,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:19:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 7422 states and 10406 transitions. [2023-04-02 05:19:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 05:19:04,712 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:04,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:04,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:04,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-02 05:19:04,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:04,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:04,930 INFO L85 PathProgramCache]: Analyzing trace with hash 764663566, now seen corresponding path program 1 times [2023-04-02 05:19:04,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:04,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903188253] [2023-04-02 05:19:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:04,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:19:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:19:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:19:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:19:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:19:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:19:05,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903188253] [2023-04-02 05:19:05,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903188253] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008799320] [2023-04-02 05:19:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:05,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:05,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:05,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:05,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:19:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:05,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:19:05,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:19:06,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:19:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008799320] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:06,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:19:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 30 [2023-04-02 05:19:06,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150223801] [2023-04-02 05:19:06,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:06,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:19:06,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:19:06,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:19:06,382 INFO L87 Difference]: Start difference. First operand 7422 states and 10406 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:19:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:08,396 INFO L93 Difference]: Finished difference Result 11958 states and 16791 transitions. [2023-04-02 05:19:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:19:08,397 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 133 [2023-04-02 05:19:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:08,418 INFO L225 Difference]: With dead ends: 11958 [2023-04-02 05:19:08,418 INFO L226 Difference]: Without dead ends: 9150 [2023-04-02 05:19:08,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:19:08,426 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 999 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:08,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 421 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:19:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9150 states. [2023-04-02 05:19:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9150 to 9140. [2023-04-02 05:19:09,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9140 states, 6921 states have (on average 1.4115012281462216) internal successors, (9769), 7065 states have internal predecessors, (9769), 1038 states have call successors, (1038), 1038 states have call predecessors, (1038), 1180 states have return successors, (2027), 1036 states have call predecessors, (2027), 1037 states have call successors, (2027) [2023-04-02 05:19:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9140 states to 9140 states and 12834 transitions. [2023-04-02 05:19:09,795 INFO L78 Accepts]: Start accepts. Automaton has 9140 states and 12834 transitions. Word has length 133 [2023-04-02 05:19:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:09,796 INFO L495 AbstractCegarLoop]: Abstraction has 9140 states and 12834 transitions. [2023-04-02 05:19:09,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:19:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 9140 states and 12834 transitions. [2023-04-02 05:19:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 05:19:09,798 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:09,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:09,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:10,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-02 05:19:10,005 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:10,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1670788578, now seen corresponding path program 1 times [2023-04-02 05:19:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:10,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077828526] [2023-04-02 05:19:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:10,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:19:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:19:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:19:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:19:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:19:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:19:10,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:10,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077828526] [2023-04-02 05:19:10,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077828526] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:10,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686723350] [2023-04-02 05:19:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:10,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:10,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:10,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:10,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:19:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:10,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:19:10,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:11,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:19:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686723350] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:11,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:19:11,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2023-04-02 05:19:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595191220] [2023-04-02 05:19:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:11,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:19:11,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:19:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:19:11,551 INFO L87 Difference]: Start difference. First operand 9140 states and 12834 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:19:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:13,589 INFO L93 Difference]: Finished difference Result 14661 states and 20600 transitions. [2023-04-02 05:19:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 05:19:13,589 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 133 [2023-04-02 05:19:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:13,611 INFO L225 Difference]: With dead ends: 14661 [2023-04-02 05:19:13,611 INFO L226 Difference]: Without dead ends: 9858 [2023-04-02 05:19:13,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:19:13,620 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 801 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:13,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 513 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:19:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2023-04-02 05:19:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 9850. [2023-04-02 05:19:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9850 states, 7461 states have (on average 1.4110709020238574) internal successors, (10528), 7611 states have internal predecessors, (10528), 1120 states have call successors, (1120), 1120 states have call predecessors, (1120), 1268 states have return successors, (2186), 1118 states have call predecessors, (2186), 1119 states have call successors, (2186) [2023-04-02 05:19:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 13834 transitions. [2023-04-02 05:19:15,075 INFO L78 Accepts]: Start accepts. Automaton has 9850 states and 13834 transitions. Word has length 133 [2023-04-02 05:19:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:15,077 INFO L495 AbstractCegarLoop]: Abstraction has 9850 states and 13834 transitions. [2023-04-02 05:19:15,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:19:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 9850 states and 13834 transitions. [2023-04-02 05:19:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 05:19:15,080 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:15,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:15,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:15,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:15,287 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:15,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1370892402, now seen corresponding path program 1 times [2023-04-02 05:19:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811394321] [2023-04-02 05:19:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:15,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:19:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:19:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:19:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:19:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:19:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-02 05:19:15,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:15,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811394321] [2023-04-02 05:19:15,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811394321] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:15,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:15,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:19:15,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176959398] [2023-04-02 05:19:15,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:15,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:19:15,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:15,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:19:15,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:19:15,850 INFO L87 Difference]: Start difference. First operand 9850 states and 13834 transitions. Second operand has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 13 states have internal predecessors, (84), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:19:25,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:25,286 INFO L93 Difference]: Finished difference Result 21861 states and 30931 transitions. [2023-04-02 05:19:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-04-02 05:19:25,287 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 13 states have internal predecessors, (84), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2023-04-02 05:19:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:25,320 INFO L225 Difference]: With dead ends: 21861 [2023-04-02 05:19:25,320 INFO L226 Difference]: Without dead ends: 14576 [2023-04-02 05:19:25,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10530 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3699, Invalid=23361, Unknown=0, NotChecked=0, Total=27060 [2023-04-02 05:19:25,337 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3158 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3177 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 5476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:25,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3177 Valid, 407 Invalid, 5476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 05:19:25,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14576 states. [2023-04-02 05:19:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14576 to 14263. [2023-04-02 05:19:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14263 states, 10806 states have (on average 1.4114380899500278) internal successors, (15252), 11004 states have internal predecessors, (15252), 1630 states have call successors, (1630), 1630 states have call predecessors, (1630), 1826 states have return successors, (3200), 1628 states have call predecessors, (3200), 1629 states have call successors, (3200) [2023-04-02 05:19:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 20082 transitions. [2023-04-02 05:19:27,399 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 20082 transitions. Word has length 133 [2023-04-02 05:19:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:27,399 INFO L495 AbstractCegarLoop]: Abstraction has 14263 states and 20082 transitions. [2023-04-02 05:19:27,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 13 states have internal predecessors, (84), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:19:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 20082 transitions. [2023-04-02 05:19:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:19:27,401 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:27,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:27,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 05:19:27,401 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:27,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1474106615, now seen corresponding path program 1 times [2023-04-02 05:19:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:27,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26571377] [2023-04-02 05:19:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:27,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:19:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:19:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:19:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 05:19:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:19:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:19:27,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:27,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26571377] [2023-04-02 05:19:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26571377] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:27,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49185515] [2023-04-02 05:19:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:27,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:27,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:27,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:27,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 05:19:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:27,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:19:28,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 05:19:28,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:19:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49185515] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:28,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:19:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 32 [2023-04-02 05:19:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870206378] [2023-04-02 05:19:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:28,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:19:28,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:19:28,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:19:28,727 INFO L87 Difference]: Start difference. First operand 14263 states and 20082 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:19:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:32,077 INFO L93 Difference]: Finished difference Result 20417 states and 28776 transitions. [2023-04-02 05:19:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:19:32,078 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2023-04-02 05:19:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:32,130 INFO L225 Difference]: With dead ends: 20417 [2023-04-02 05:19:32,130 INFO L226 Difference]: Without dead ends: 18796 [2023-04-02 05:19:32,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:19:32,138 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1124 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:32,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 715 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:19:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18796 states. [2023-04-02 05:19:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18796 to 18777. [2023-04-02 05:19:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18777 states, 14230 states have (on average 1.4125087842586086) internal successors, (20100), 14474 states have internal predecessors, (20100), 2152 states have call successors, (2152), 2152 states have call predecessors, (2152), 2394 states have return successors, (4220), 2150 states have call predecessors, (4220), 2151 states have call successors, (4220) [2023-04-02 05:19:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18777 states to 18777 states and 26472 transitions. [2023-04-02 05:19:34,955 INFO L78 Accepts]: Start accepts. Automaton has 18777 states and 26472 transitions. Word has length 135 [2023-04-02 05:19:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:34,957 INFO L495 AbstractCegarLoop]: Abstraction has 18777 states and 26472 transitions. [2023-04-02 05:19:34,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:19:34,957 INFO L276 IsEmpty]: Start isEmpty. Operand 18777 states and 26472 transitions. [2023-04-02 05:19:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:19:34,960 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:34,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:34,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:35,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-02 05:19:35,168 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:35,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:35,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1256882902, now seen corresponding path program 1 times [2023-04-02 05:19:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:35,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057307346] [2023-04-02 05:19:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:35,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:19:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:19:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:19:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:19:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:19:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:35,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:35,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057307346] [2023-04-02 05:19:35,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057307346] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:35,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964665660] [2023-04-02 05:19:35,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:35,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:35,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:35,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:35,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 05:19:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:35,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:35,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:35,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:36,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964665660] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:36,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:36,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 9] total 21 [2023-04-02 05:19:36,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852302409] [2023-04-02 05:19:36,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:36,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:36,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:36,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:36,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:36,039 INFO L87 Difference]: Start difference. First operand 18777 states and 26472 transitions. Second operand has 21 states, 20 states have (on average 7.8) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (43), 13 states have call predecessors, (43), 9 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:42,622 INFO L93 Difference]: Finished difference Result 47787 states and 67448 transitions. [2023-04-02 05:19:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-02 05:19:42,622 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.8) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (43), 13 states have call predecessors, (43), 9 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 135 [2023-04-02 05:19:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:42,709 INFO L225 Difference]: With dead ends: 47787 [2023-04-02 05:19:42,709 INFO L226 Difference]: Without dead ends: 29068 [2023-04-02 05:19:42,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:19:42,741 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1346 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:42,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 187 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:19:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29068 states. [2023-04-02 05:19:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29068 to 27998. [2023-04-02 05:19:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27998 states, 21077 states have (on average 1.381838022488969) internal successors, (29125), 21535 states have internal predecessors, (29125), 3232 states have call successors, (3232), 3232 states have call predecessors, (3232), 3688 states have return successors, (6143), 3230 states have call predecessors, (6143), 3231 states have call successors, (6143) [2023-04-02 05:19:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27998 states to 27998 states and 38500 transitions. [2023-04-02 05:19:47,402 INFO L78 Accepts]: Start accepts. Automaton has 27998 states and 38500 transitions. Word has length 135 [2023-04-02 05:19:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:47,403 INFO L495 AbstractCegarLoop]: Abstraction has 27998 states and 38500 transitions. [2023-04-02 05:19:47,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.8) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (43), 13 states have call predecessors, (43), 9 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:47,403 INFO L276 IsEmpty]: Start isEmpty. Operand 27998 states and 38500 transitions. [2023-04-02 05:19:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:19:47,405 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:47,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:47,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:47,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:47,611 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:47,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash -813055339, now seen corresponding path program 1 times [2023-04-02 05:19:47,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:47,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358754754] [2023-04-02 05:19:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:47,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:19:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:19:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:19:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:19:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:48,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:19:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:48,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:48,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358754754] [2023-04-02 05:19:48,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358754754] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:48,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552564207] [2023-04-02 05:19:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:48,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:48,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:48,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:48,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 05:19:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:48,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:48,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:48,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552564207] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:48,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:19:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560549625] [2023-04-02 05:19:48,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:48,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:48,505 INFO L87 Difference]: Start difference. First operand 27998 states and 38500 transitions. Second operand has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:52,326 INFO L93 Difference]: Finished difference Result 41833 states and 57422 transitions. [2023-04-02 05:19:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:19:52,327 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 136 [2023-04-02 05:19:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:52,413 INFO L225 Difference]: With dead ends: 41833 [2023-04-02 05:19:52,414 INFO L226 Difference]: Without dead ends: 13943 [2023-04-02 05:19:52,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=359, Invalid=1047, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 05:19:52,448 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 958 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:52,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 125 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:19:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13943 states. [2023-04-02 05:19:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13943 to 13863. [2023-04-02 05:19:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13863 states, 10420 states have (on average 1.367370441458733) internal successors, (14248), 10644 states have internal predecessors, (14248), 1610 states have call successors, (1610), 1610 states have call predecessors, (1610), 1832 states have return successors, (2931), 1608 states have call predecessors, (2931), 1609 states have call successors, (2931) [2023-04-02 05:19:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13863 states to 13863 states and 18789 transitions. [2023-04-02 05:19:54,520 INFO L78 Accepts]: Start accepts. Automaton has 13863 states and 18789 transitions. Word has length 136 [2023-04-02 05:19:54,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:54,520 INFO L495 AbstractCegarLoop]: Abstraction has 13863 states and 18789 transitions. [2023-04-02 05:19:54,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:54,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13863 states and 18789 transitions. [2023-04-02 05:19:54,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 05:19:54,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:54,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:54,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:54,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:54,731 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:54,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1098409667, now seen corresponding path program 1 times [2023-04-02 05:19:54,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:54,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743167825] [2023-04-02 05:19:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:54,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:19:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:19:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:19:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 05:19:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:19:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:54,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743167825] [2023-04-02 05:19:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743167825] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430528356] [2023-04-02 05:19:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:54,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:54,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:54,982 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:54,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 05:19:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:55,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:55,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:55,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430528356] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:55,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:19:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540961949] [2023-04-02 05:19:55,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:55,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:55,404 INFO L87 Difference]: Start difference. First operand 13863 states and 18789 transitions. Second operand has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:20:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:01,060 INFO L93 Difference]: Finished difference Result 41235 states and 56304 transitions. [2023-04-02 05:20:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 05:20:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 138 [2023-04-02 05:20:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:01,131 INFO L225 Difference]: With dead ends: 41235 [2023-04-02 05:20:01,131 INFO L226 Difference]: Without dead ends: 27480 [2023-04-02 05:20:01,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=592, Invalid=2060, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:20:01,158 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2191 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:01,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 103 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:20:01,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27480 states. [2023-04-02 05:20:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27480 to 26439. [2023-04-02 05:20:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26439 states, 19663 states have (on average 1.3407923511163098) internal successors, (26364), 20076 states have internal predecessors, (26364), 3182 states have call successors, (3182), 3182 states have call predecessors, (3182), 3593 states have return successors, (5997), 3180 states have call predecessors, (5997), 3181 states have call successors, (5997) [2023-04-02 05:20:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26439 states to 26439 states and 35543 transitions. [2023-04-02 05:20:05,350 INFO L78 Accepts]: Start accepts. Automaton has 26439 states and 35543 transitions. Word has length 138 [2023-04-02 05:20:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:05,350 INFO L495 AbstractCegarLoop]: Abstraction has 26439 states and 35543 transitions. [2023-04-02 05:20:05,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:20:05,350 INFO L276 IsEmpty]: Start isEmpty. Operand 26439 states and 35543 transitions. [2023-04-02 05:20:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 05:20:05,353 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:05,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:20:05,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 05:20:05,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:05,559 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:05,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1666068843, now seen corresponding path program 1 times [2023-04-02 05:20:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163112958] [2023-04-02 05:20:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:05,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:20:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:20:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:20:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:20:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:20:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:20:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:20:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:20:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:20:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:20:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:20:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:20:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:20:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 05:20:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:20:05,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163112958] [2023-04-02 05:20:05,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163112958] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:20:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922986405] [2023-04-02 05:20:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:05,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:05,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:20:05,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:20:05,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 05:20:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:05,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:20:05,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:20:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:06,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:20:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:20:06,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922986405] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:20:06,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:20:06,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:20:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928241772] [2023-04-02 05:20:06,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:20:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:20:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:20:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:20:06,260 INFO L87 Difference]: Start difference. First operand 26439 states and 35543 transitions. Second operand has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:20:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:16,196 INFO L93 Difference]: Finished difference Result 78862 states and 106871 transitions. [2023-04-02 05:20:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 05:20:16,198 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 140 [2023-04-02 05:20:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:16,376 INFO L225 Difference]: With dead ends: 78862 [2023-04-02 05:20:16,376 INFO L226 Difference]: Without dead ends: 52572 [2023-04-02 05:20:16,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=590, Invalid=2062, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:20:16,563 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1688 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:16,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1697 Valid, 134 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:20:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52572 states. [2023-04-02 05:20:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52572 to 50404. [2023-04-02 05:20:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50404 states, 37035 states have (on average 1.3098690427973538) internal successors, (48511), 37781 states have internal predecessors, (48511), 6312 states have call successors, (6312), 6312 states have call predecessors, (6312), 7056 states have return successors, (12303), 6310 states have call predecessors, (12303), 6311 states have call successors, (12303) [2023-04-02 05:20:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50404 states to 50404 states and 67126 transitions. [2023-04-02 05:20:25,434 INFO L78 Accepts]: Start accepts. Automaton has 50404 states and 67126 transitions. Word has length 140 [2023-04-02 05:20:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:25,434 INFO L495 AbstractCegarLoop]: Abstraction has 50404 states and 67126 transitions. [2023-04-02 05:20:25,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:20:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 50404 states and 67126 transitions. [2023-04-02 05:20:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 05:20:25,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:25,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:20:25,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-02 05:20:25,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-04-02 05:20:25,646 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:25,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1024540541, now seen corresponding path program 1 times [2023-04-02 05:20:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:25,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704921431] [2023-04-02 05:20:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:20:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:20:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:20:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:20:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:20:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:20:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 05:20:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:20:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:20:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:20:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:20:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 05:20:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:20:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:25,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704921431] [2023-04-02 05:20:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704921431] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:20:25,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845907080] [2023-04-02 05:20:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:25,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:25,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:20:25,949 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:20:25,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 05:20:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:26,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:20:26,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:20:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:20:26,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:20:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:20:26,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845907080] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:20:26,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:20:26,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:20:26,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807154974] [2023-04-02 05:20:26,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:20:26,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:20:26,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:20:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:20:26,406 INFO L87 Difference]: Start difference. First operand 50404 states and 67126 transitions. Second operand has 21 states, 20 states have (on average 8.75) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:20:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:45,149 INFO L93 Difference]: Finished difference Result 150562 states and 202293 transitions. [2023-04-02 05:20:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 05:20:45,150 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.75) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 142 [2023-04-02 05:20:45,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:45,642 INFO L225 Difference]: With dead ends: 150562 [2023-04-02 05:20:45,642 INFO L226 Difference]: Without dead ends: 100371 [2023-04-02 05:20:45,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=588, Invalid=2064, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:20:45,730 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1641 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:45,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 119 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:20:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100371 states. [2023-04-02 05:21:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100371 to 95837. [2023-04-02 05:21:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95837 states, 69481 states have (on average 1.2763489299232884) internal successors, (88682), 70786 states have internal predecessors, (88682), 12526 states have call successors, (12526), 12526 states have call predecessors, (12526), 13829 states have return successors, (25098), 12524 states have call predecessors, (25098), 12525 states have call successors, (25098) [2023-04-02 05:21:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95837 states to 95837 states and 126306 transitions. [2023-04-02 05:21:03,041 INFO L78 Accepts]: Start accepts. Automaton has 95837 states and 126306 transitions. Word has length 142 [2023-04-02 05:21:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:03,041 INFO L495 AbstractCegarLoop]: Abstraction has 95837 states and 126306 transitions. [2023-04-02 05:21:03,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.75) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:21:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 95837 states and 126306 transitions. [2023-04-02 05:21:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 05:21:03,049 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:03,049 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:21:03,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 05:21:03,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:03,253 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:03,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:03,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1168834603, now seen corresponding path program 1 times [2023-04-02 05:21:03,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:03,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149986410] [2023-04-02 05:21:03,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:03,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:21:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:21:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:21:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:21:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:21:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:21:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 05:21:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:21:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:21:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:21:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:21:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 05:21:04,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:04,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149986410] [2023-04-02 05:21:04,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149986410] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:04,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235211367] [2023-04-02 05:21:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:04,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:04,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:04,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:21:04,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 05:21:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:04,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:21:04,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:21:04,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:21:04,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235211367] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:04,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:21:04,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2023-04-02 05:21:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568931924] [2023-04-02 05:21:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:04,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:21:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:21:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2023-04-02 05:21:04,615 INFO L87 Difference]: Start difference. First operand 95837 states and 126306 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:21:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:13,826 INFO L93 Difference]: Finished difference Result 142896 states and 188308 transitions. [2023-04-02 05:21:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:21:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 144 [2023-04-02 05:21:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:14,132 INFO L225 Difference]: With dead ends: 142896 [2023-04-02 05:21:14,132 INFO L226 Difference]: Without dead ends: 47241 [2023-04-02 05:21:14,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2023-04-02 05:21:14,238 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 182 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:14,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 90 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:21:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47241 states. [2023-04-02 05:21:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47241 to 47239. [2023-04-02 05:21:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47239 states, 34186 states have (on average 1.2597847071900778) internal successors, (43067), 34822 states have internal predecessors, (43067), 6209 states have call successors, (6209), 6209 states have call predecessors, (6209), 6843 states have return successors, (11481), 6207 states have call predecessors, (11481), 6208 states have call successors, (11481) [2023-04-02 05:21:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47239 states to 47239 states and 60757 transitions. [2023-04-02 05:21:22,658 INFO L78 Accepts]: Start accepts. Automaton has 47239 states and 60757 transitions. Word has length 144 [2023-04-02 05:21:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:22,659 INFO L495 AbstractCegarLoop]: Abstraction has 47239 states and 60757 transitions. [2023-04-02 05:21:22,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:21:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 47239 states and 60757 transitions. [2023-04-02 05:21:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 05:21:22,664 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:22,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:21:22,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 05:21:22,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-04-02 05:21:22,871 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:22,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash -557910251, now seen corresponding path program 2 times [2023-04-02 05:21:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109696660] [2023-04-02 05:21:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:21:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:21:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:21:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:21:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:21:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:21:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:21:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:21:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:21:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:21:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:21:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:21:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:21:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 05:21:23,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:23,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109696660] [2023-04-02 05:21:23,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109696660] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:23,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026893695] [2023-04-02 05:21:23,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 05:21:23,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:23,431 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:21:23,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 05:21:23,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 05:21:23,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 05:21:23,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:21:23,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 05:21:23,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:21:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026893695] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:23,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:21:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2023-04-02 05:21:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696306975] [2023-04-02 05:21:23,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:23,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:21:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:21:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-04-02 05:21:23,669 INFO L87 Difference]: Start difference. First operand 47239 states and 60757 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:21:28,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:28,257 INFO L93 Difference]: Finished difference Result 70392 states and 90479 transitions. [2023-04-02 05:21:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:21:28,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 144 [2023-04-02 05:21:28,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:28,302 INFO L225 Difference]: With dead ends: 70392 [2023-04-02 05:21:28,302 INFO L226 Difference]: Without dead ends: 23276 [2023-04-02 05:21:28,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2023-04-02 05:21:28,349 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 170 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:28,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 88 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:21:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23276 states. [2023-04-02 05:21:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23276 to 23274. [2023-04-02 05:21:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23274 states, 16812 states have (on average 1.2422079467047347) internal successors, (20884), 17125 states have internal predecessors, (20884), 3075 states have call successors, (3075), 3075 states have call predecessors, (3075), 3386 states have return successors, (5171), 3073 states have call predecessors, (5171), 3074 states have call successors, (5171) [2023-04-02 05:21:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23274 states to 23274 states and 29130 transitions. [2023-04-02 05:21:32,682 INFO L78 Accepts]: Start accepts. Automaton has 23274 states and 29130 transitions. Word has length 144 [2023-04-02 05:21:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:32,682 INFO L495 AbstractCegarLoop]: Abstraction has 23274 states and 29130 transitions. [2023-04-02 05:21:32,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:21:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 23274 states and 29130 transitions. [2023-04-02 05:21:32,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 05:21:32,685 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:32,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:21:32,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 05:21:32,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-04-02 05:21:32,891 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:32,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:32,892 INFO L85 PathProgramCache]: Analyzing trace with hash -415665067, now seen corresponding path program 3 times [2023-04-02 05:21:32,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:32,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662895781] [2023-04-02 05:21:32,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:32,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:21:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:21:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:21:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:21:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:21:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:21:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:21:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:21:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:21:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:21:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:21:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:21:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:21:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 05:21:33,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:33,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662895781] [2023-04-02 05:21:33,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662895781] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:33,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073277630] [2023-04-02 05:21:33,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 05:21:33,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:33,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:33,510 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:21:33,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-02 05:21:33,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-02 05:21:33,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 05:21:33,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 05:21:33,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 05:21:33,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:21:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:21:34,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073277630] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:21:34,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:21:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 6, 7] total 30 [2023-04-02 05:21:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325323708] [2023-04-02 05:21:34,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:21:34,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-04-02 05:21:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-04-02 05:21:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:21:34,124 INFO L87 Difference]: Start difference. First operand 23274 states and 29130 transitions. Second operand has 30 states, 29 states have (on average 9.0) internal successors, (261), 23 states have internal predecessors, (261), 11 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (47), 11 states have call predecessors, (47), 10 states have call successors, (47) [2023-04-02 05:22:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:14,568 INFO L93 Difference]: Finished difference Result 155306 states and 203314 transitions. [2023-04-02 05:22:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2023-04-02 05:22:14,569 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 9.0) internal successors, (261), 23 states have internal predecessors, (261), 11 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (47), 11 states have call predecessors, (47), 10 states have call successors, (47) Word has length 144 [2023-04-02 05:22:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:14,929 INFO L225 Difference]: With dead ends: 155306 [2023-04-02 05:22:14,929 INFO L226 Difference]: Without dead ends: 131174 [2023-04-02 05:22:15,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17538 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=5472, Invalid=40538, Unknown=0, NotChecked=0, Total=46010 [2023-04-02 05:22:15,002 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 5891 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4854 mSolverCounterSat, 1042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5891 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 5896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 4854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:15,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5891 Valid, 221 Invalid, 5896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1042 Valid, 4854 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 05:22:15,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131174 states.