/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.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:15:13,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:15:13,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:15:13,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:15:13,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:15:13,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:15:13,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:15:13,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:15:13,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:15:13,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:15:13,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:15:13,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:15:13,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:15:13,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:15:13,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:15:13,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:15:13,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:15:13,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:15:13,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:15:13,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:15:13,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:15:13,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:15:13,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:15:13,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:15:13,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:15:13,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:15:13,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:15:13,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:15:13,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:15:13,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:15:13,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:15:13,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:15:13,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:15:13,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:15:13,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:15:13,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:15:13,829 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 05:15:13,851 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:15:13,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:15:13,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:15:13,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:15:13,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:15:13,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:15:13,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:15:13,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:15:13,852 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:15:13,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:15:13,855 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:15:13,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:15:13,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:15:13,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:15:13,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:15:13,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:15:13,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:15:13,856 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:15:13,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:15:13,856 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:15:13,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:15:13,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:15:13,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:15:13,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:15:13,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:15:13,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:15:13,857 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:15:13,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:15:14,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:15:14,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:15:14,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:15:14,100 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:15:14,101 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:15:14,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:15:15,205 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:15:15,370 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:15:15,370 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:15:15,378 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fcf3ccc/776305aeca70494682f30ef10d3fc1cd/FLAGb98056bfc [2023-04-02 05:15:15,396 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91fcf3ccc/776305aeca70494682f30ef10d3fc1cd [2023-04-02 05:15:15,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:15:15,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:15:15,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:15:15,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:15:15,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:15:15,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c741c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15, skipping insertion in model container [2023-04-02 05:15:15,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:15:15,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:15:15,559 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.3.ufo.BOUNDED-6.pals.c[5947,5960] [2023-04-02 05:15:15,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:15:15,569 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:15:15,599 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.3.ufo.BOUNDED-6.pals.c[5947,5960] [2023-04-02 05:15:15,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:15:15,611 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:15:15,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15 WrapperNode [2023-04-02 05:15:15,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:15:15,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:15:15,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:15:15,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:15:15,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,642 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:15:15,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:15:15,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:15:15,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:15:15,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (1/1) ... [2023-04-02 05:15:15,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:15:15,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:15:15,689 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 05:15:15,696 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 05:15:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:15:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:15:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:15:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:15:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:15:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:15:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:15:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:15:15,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:15:15,721 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:15:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:15:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:15:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:15:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:15:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:15:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:15:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:15:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:15:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:15:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:15:15,825 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:15:15,829 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:15:16,073 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:15:16,078 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:15:16,078 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:15:16,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:15:16 BoogieIcfgContainer [2023-04-02 05:15:16,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:15:16,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:15:16,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:15:16,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:15:16,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:15:15" (1/3) ... [2023-04-02 05:15:16,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2bf296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:15:16, skipping insertion in model container [2023-04-02 05:15:16,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:15:15" (2/3) ... [2023-04-02 05:15:16,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2bf296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:15:16, skipping insertion in model container [2023-04-02 05:15:16,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:15:16" (3/3) ... [2023-04-02 05:15:16,085 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2023-04-02 05:15:16,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:15:16,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:15:16,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:15:16,157 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;@41579f90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:15:16,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:15:16,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 66 states have internal predecessors, (103), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 05:15:16,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-02 05:15:16,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:16,170 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] [2023-04-02 05:15:16,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:16,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1296154606, now seen corresponding path program 1 times [2023-04-02 05:15:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:16,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656002193] [2023-04-02 05:15:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:16,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 05:15:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 05:15:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 05:15:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:16,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:15:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:16,600 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 05:15:16,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:16,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656002193] [2023-04-02 05:15:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656002193] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:16,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:15:16,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657291575] [2023-04-02 05:15:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:16,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:15:16,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:15:16,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:15:16,632 INFO L87 Difference]: Start difference. First operand has 83 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 66 states have internal predecessors, (103), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:16,990 INFO L93 Difference]: Finished difference Result 137 states and 193 transitions. [2023-04-02 05:15:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:15:16,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-04-02 05:15:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:16,997 INFO L225 Difference]: With dead ends: 137 [2023-04-02 05:15:16,997 INFO L226 Difference]: Without dead ends: 78 [2023-04-02 05:15:16,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:15:17,001 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 116 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:17,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 69 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:15:17,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-04-02 05:15:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-04-02 05:15:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 62 states have internal predecessors, (96), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 05:15:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 111 transitions. [2023-04-02 05:15:17,034 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 111 transitions. Word has length 43 [2023-04-02 05:15:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:17,035 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 111 transitions. [2023-04-02 05:15:17,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:17,035 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 111 transitions. [2023-04-02 05:15:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-02 05:15:17,036 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:17,036 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] [2023-04-02 05:15:17,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:15:17,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:17,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:17,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1273522352, now seen corresponding path program 1 times [2023-04-02 05:15:17,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:17,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131865951] [2023-04-02 05:15:17,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:17,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:17,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 05:15:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 05:15:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 05:15:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:17,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 05:15:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:17,325 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 05:15:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131865951] [2023-04-02 05:15:17,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131865951] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:17,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:17,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:15:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481838157] [2023-04-02 05:15:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:17,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:15:17,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:15:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:15:17,328 INFO L87 Difference]: Start difference. First operand 78 states and 111 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:17,858 INFO L93 Difference]: Finished difference Result 141 states and 196 transitions. [2023-04-02 05:15:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 05:15:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-04-02 05:15:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:17,861 INFO L225 Difference]: With dead ends: 141 [2023-04-02 05:15:17,862 INFO L226 Difference]: Without dead ends: 87 [2023-04-02 05:15:17,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:15:17,867 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 123 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:17,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 93 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:15:17,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-04-02 05:15:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2023-04-02 05:15:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 05:15:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2023-04-02 05:15:17,892 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 43 [2023-04-02 05:15:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:17,893 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2023-04-02 05:15:17,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2023-04-02 05:15:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-02 05:15:17,896 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:17,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:15:17,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:15:17,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:17,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash 180160687, now seen corresponding path program 1 times [2023-04-02 05:15:17,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:17,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749918526] [2023-04-02 05:15:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:18,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:18,216 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 05:15:18,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:18,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749918526] [2023-04-02 05:15:18,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749918526] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:18,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:18,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:18,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160516215] [2023-04-02 05:15:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:18,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:18,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:18,218 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:20,413 INFO L93 Difference]: Finished difference Result 519 states and 712 transitions. [2023-04-02 05:15:20,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-04-02 05:15:20,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2023-04-02 05:15:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:20,418 INFO L225 Difference]: With dead ends: 519 [2023-04-02 05:15:20,418 INFO L226 Difference]: Without dead ends: 471 [2023-04-02 05:15:20,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=724, Invalid=2816, Unknown=0, NotChecked=0, Total=3540 [2023-04-02 05:15:20,421 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1044 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:20,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 204 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:15:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-04-02 05:15:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 318. [2023-04-02 05:15:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 246 states have (on average 1.3821138211382114) internal successors, (340), 252 states have internal predecessors, (340), 33 states have call successors, (33), 33 states have call predecessors, (33), 38 states have return successors, (54), 32 states have call predecessors, (54), 32 states have call successors, (54) [2023-04-02 05:15:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 427 transitions. [2023-04-02 05:15:20,476 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 427 transitions. Word has length 58 [2023-04-02 05:15:20,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:20,477 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 427 transitions. [2023-04-02 05:15:20,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 427 transitions. [2023-04-02 05:15:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 05:15:20,479 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:20,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:15:20,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:15:20,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:20,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:20,480 INFO L85 PathProgramCache]: Analyzing trace with hash 93320063, now seen corresponding path program 1 times [2023-04-02 05:15:20,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:20,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867562520] [2023-04-02 05:15:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:20,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:20,621 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 05:15:20,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:20,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867562520] [2023-04-02 05:15:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867562520] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:20,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 05:15:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989461961] [2023-04-02 05:15:20,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:20,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 05:15:20,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:20,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 05:15:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-02 05:15:20,626 INFO L87 Difference]: Start difference. First operand 318 states and 427 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 05:15:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:21,100 INFO L93 Difference]: Finished difference Result 854 states and 1177 transitions. [2023-04-02 05:15:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:15:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2023-04-02 05:15:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:21,117 INFO L225 Difference]: With dead ends: 854 [2023-04-02 05:15:21,117 INFO L226 Difference]: Without dead ends: 566 [2023-04-02 05:15:21,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:15:21,119 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 189 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:21,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 82 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:15:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-04-02 05:15:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 564. [2023-04-02 05:15:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 428 states have (on average 1.3598130841121496) internal successors, (582), 438 states have internal predecessors, (582), 63 states have call successors, (63), 63 states have call predecessors, (63), 72 states have return successors, (116), 62 states have call predecessors, (116), 62 states have call successors, (116) [2023-04-02 05:15:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 761 transitions. [2023-04-02 05:15:21,180 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 761 transitions. Word has length 60 [2023-04-02 05:15:21,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:21,181 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 761 transitions. [2023-04-02 05:15:21,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 05:15:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 761 transitions. [2023-04-02 05:15:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 05:15:21,188 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:21,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:15:21,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:15:21,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:21,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:21,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1194382393, now seen corresponding path program 1 times [2023-04-02 05:15:21,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:21,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020502722] [2023-04-02 05:15:21,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:21,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:21,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:21,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:21,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:21,573 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 05:15:21,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:21,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020502722] [2023-04-02 05:15:21,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020502722] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:21,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:21,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:21,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694783418] [2023-04-02 05:15:21,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:21,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:21,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:21,576 INFO L87 Difference]: Start difference. First operand 564 states and 761 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:23,866 INFO L93 Difference]: Finished difference Result 1542 states and 2120 transitions. [2023-04-02 05:15:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-04-02 05:15:23,867 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2023-04-02 05:15:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:23,876 INFO L225 Difference]: With dead ends: 1542 [2023-04-02 05:15:23,876 INFO L226 Difference]: Without dead ends: 1008 [2023-04-02 05:15:23,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=666, Invalid=2526, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 05:15:23,882 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 855 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:23,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 203 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:15:23,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-04-02 05:15:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 972. [2023-04-02 05:15:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 739 states have (on average 1.374830852503383) internal successors, (1016), 754 states have internal predecessors, (1016), 109 states have call successors, (109), 109 states have call predecessors, (109), 123 states have return successors, (209), 108 states have call predecessors, (209), 108 states have call successors, (209) [2023-04-02 05:15:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1334 transitions. [2023-04-02 05:15:23,972 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1334 transitions. Word has length 60 [2023-04-02 05:15:23,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:23,973 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1334 transitions. [2023-04-02 05:15:23,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1334 transitions. [2023-04-02 05:15:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 05:15:23,974 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:23,974 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] [2023-04-02 05:15:23,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:15:23,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:23,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash -107524622, now seen corresponding path program 1 times [2023-04-02 05:15:23,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:23,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821022761] [2023-04-02 05:15:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:23,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:24,152 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 05:15:24,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:24,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821022761] [2023-04-02 05:15:24,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821022761] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:24,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:15:24,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757198545] [2023-04-02 05:15:24,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:24,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:15:24,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:24,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:15:24,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:15:24,154 INFO L87 Difference]: Start difference. First operand 972 states and 1334 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:24,835 INFO L93 Difference]: Finished difference Result 2201 states and 3031 transitions. [2023-04-02 05:15:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:15:24,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2023-04-02 05:15:24,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:24,842 INFO L225 Difference]: With dead ends: 2201 [2023-04-02 05:15:24,842 INFO L226 Difference]: Without dead ends: 1259 [2023-04-02 05:15:24,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:15:24,847 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 310 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:24,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 95 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:15:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-04-02 05:15:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1255. [2023-04-02 05:15:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 946 states have (on average 1.364693446088795) internal successors, (1291), 973 states have internal predecessors, (1291), 141 states have call successors, (141), 141 states have call predecessors, (141), 167 states have return successors, (279), 140 states have call predecessors, (279), 140 states have call successors, (279) [2023-04-02 05:15:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1711 transitions. [2023-04-02 05:15:24,976 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1711 transitions. Word has length 61 [2023-04-02 05:15:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:24,978 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1711 transitions. [2023-04-02 05:15:24,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 05:15:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1711 transitions. [2023-04-02 05:15:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-02 05:15:24,983 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:24,983 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] [2023-04-02 05:15:24,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:15:24,984 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:24,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1539900339, now seen corresponding path program 1 times [2023-04-02 05:15:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024698787] [2023-04-02 05:15:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:25,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:25,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:25,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:25,317 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 05:15:25,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024698787] [2023-04-02 05:15:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024698787] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:25,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:25,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:15:25,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249503598] [2023-04-02 05:15:25,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:25,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:15:25,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:15:25,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:15:25,319 INFO L87 Difference]: Start difference. First operand 1255 states and 1711 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 05:15:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:26,206 INFO L93 Difference]: Finished difference Result 1385 states and 1965 transitions. [2023-04-02 05:15:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:15:26,206 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2023-04-02 05:15:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:26,213 INFO L225 Difference]: With dead ends: 1385 [2023-04-02 05:15:26,213 INFO L226 Difference]: Without dead ends: 1383 [2023-04-02 05:15:26,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:15:26,216 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 163 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:26,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 252 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:15:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-04-02 05:15:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1282. [2023-04-02 05:15:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 964 states have (on average 1.3526970954356847) internal successors, (1304), 994 states have internal predecessors, (1304), 144 states have call successors, (144), 144 states have call predecessors, (144), 173 states have return successors, (288), 143 states have call predecessors, (288), 143 states have call successors, (288) [2023-04-02 05:15:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1736 transitions. [2023-04-02 05:15:26,379 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1736 transitions. Word has length 61 [2023-04-02 05:15:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:26,379 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1736 transitions. [2023-04-02 05:15:26,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (8), 6 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 05:15:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1736 transitions. [2023-04-02 05:15:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:15:26,381 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:26,381 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] [2023-04-02 05:15:26,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:15:26,381 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:26,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash 681999783, now seen corresponding path program 1 times [2023-04-02 05:15:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:26,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537581015] [2023-04-02 05:15:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:26,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:15:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:15:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:15:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:26,617 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 05:15:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537581015] [2023-04-02 05:15:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537581015] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:26,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193037632] [2023-04-02 05:15:26,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:26,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:26,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:26,619 INFO L87 Difference]: Start difference. First operand 1282 states and 1736 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:15:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:27,606 INFO L93 Difference]: Finished difference Result 2557 states and 3498 transitions. [2023-04-02 05:15:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:15:27,606 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 62 [2023-04-02 05:15:27,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:27,612 INFO L225 Difference]: With dead ends: 2557 [2023-04-02 05:15:27,613 INFO L226 Difference]: Without dead ends: 1570 [2023-04-02 05:15:27,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:15:27,616 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 493 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:27,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 69 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:15:27,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-04-02 05:15:27,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1405. [2023-04-02 05:15:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1057 states have (on average 1.3642384105960266) internal successors, (1442), 1094 states have internal predecessors, (1442), 156 states have call successors, (156), 156 states have call predecessors, (156), 191 states have return successors, (315), 154 states have call predecessors, (315), 155 states have call successors, (315) [2023-04-02 05:15:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1913 transitions. [2023-04-02 05:15:27,761 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1913 transitions. Word has length 62 [2023-04-02 05:15:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:27,762 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 1913 transitions. [2023-04-02 05:15:27,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:15:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1913 transitions. [2023-04-02 05:15:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:15:27,763 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:27,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:15:27,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:15:27,763 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:27,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1601247689, now seen corresponding path program 1 times [2023-04-02 05:15:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966667204] [2023-04-02 05:15:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:27,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:27,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:15:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:27,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:15:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:27,984 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 05:15:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:27,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966667204] [2023-04-02 05:15:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966667204] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:27,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357119831] [2023-04-02 05:15:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:27,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:27,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:27,986 INFO L87 Difference]: Start difference. First operand 1405 states and 1913 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:15:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:29,010 INFO L93 Difference]: Finished difference Result 3257 states and 4399 transitions. [2023-04-02 05:15:29,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:15:29,010 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 62 [2023-04-02 05:15:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:29,017 INFO L225 Difference]: With dead ends: 3257 [2023-04-02 05:15:29,018 INFO L226 Difference]: Without dead ends: 1888 [2023-04-02 05:15:29,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:15:29,023 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 613 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:29,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 63 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:15:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-04-02 05:15:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1437. [2023-04-02 05:15:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1080 states have (on average 1.363888888888889) internal successors, (1473), 1120 states have internal predecessors, (1473), 159 states have call successors, (159), 159 states have call predecessors, (159), 197 states have return successors, (321), 157 states have call predecessors, (321), 158 states have call successors, (321) [2023-04-02 05:15:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1953 transitions. [2023-04-02 05:15:29,195 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1953 transitions. Word has length 62 [2023-04-02 05:15:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:29,196 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1953 transitions. [2023-04-02 05:15:29,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:15:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1953 transitions. [2023-04-02 05:15:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:15:29,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:29,197 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] [2023-04-02 05:15:29,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:15:29,198 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:29,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 718591015, now seen corresponding path program 1 times [2023-04-02 05:15:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:29,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668572985] [2023-04-02 05:15:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:29,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:15:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:29,394 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 05:15:29,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:29,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668572985] [2023-04-02 05:15:29,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668572985] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:29,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:29,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:29,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418937432] [2023-04-02 05:15:29,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:29,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:29,396 INFO L87 Difference]: Start difference. First operand 1437 states and 1953 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:15:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:30,456 INFO L93 Difference]: Finished difference Result 3017 states and 4043 transitions. [2023-04-02 05:15:30,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:15:30,457 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 62 [2023-04-02 05:15:30,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:30,462 INFO L225 Difference]: With dead ends: 3017 [2023-04-02 05:15:30,463 INFO L226 Difference]: Without dead ends: 1636 [2023-04-02 05:15:30,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:15:30,466 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 511 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:30,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 64 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 05:15:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-04-02 05:15:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1443. [2023-04-02 05:15:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1085 states have (on average 1.3622119815668203) internal successors, (1478), 1124 states have internal predecessors, (1478), 160 states have call successors, (160), 160 states have call predecessors, (160), 197 states have return successors, (321), 158 states have call predecessors, (321), 159 states have call successors, (321) [2023-04-02 05:15:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1959 transitions. [2023-04-02 05:15:30,607 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1959 transitions. Word has length 62 [2023-04-02 05:15:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:30,608 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 1959 transitions. [2023-04-02 05:15:30,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-02 05:15:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1959 transitions. [2023-04-02 05:15:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 05:15:30,612 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:30,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:15:30,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:15:30,613 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:30,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1552099076, now seen corresponding path program 1 times [2023-04-02 05:15:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663450005] [2023-04-02 05:15:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:30,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:30,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-04-02 05:15:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:30,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:15:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:30,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:15:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:30,866 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 05:15:30,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:30,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663450005] [2023-04-02 05:15:30,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663450005] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:30,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:30,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:15:30,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405273860] [2023-04-02 05:15:30,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:30,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:15:30,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:30,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:15:30,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:15:30,868 INFO L87 Difference]: Start difference. First operand 1443 states and 1959 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:15:31,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:31,898 INFO L93 Difference]: Finished difference Result 3048 states and 4177 transitions. [2023-04-02 05:15:31,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:15:31,901 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2023-04-02 05:15:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:31,909 INFO L225 Difference]: With dead ends: 3048 [2023-04-02 05:15:31,909 INFO L226 Difference]: Without dead ends: 1980 [2023-04-02 05:15:31,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:15:31,912 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 396 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:31,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 118 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:15:31,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2023-04-02 05:15:32,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1923. [2023-04-02 05:15:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1447 states have (on average 1.3628196268140982) internal successors, (1972), 1500 states have internal predecessors, (1972), 212 states have call successors, (212), 212 states have call predecessors, (212), 263 states have return successors, (421), 210 states have call predecessors, (421), 211 states have call successors, (421) [2023-04-02 05:15:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2605 transitions. [2023-04-02 05:15:32,083 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2605 transitions. Word has length 63 [2023-04-02 05:15:32,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:32,083 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2605 transitions. [2023-04-02 05:15:32,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-02 05:15:32,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2605 transitions. [2023-04-02 05:15:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 05:15:32,086 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:32,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:32,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:15:32,086 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:32,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2091443111, now seen corresponding path program 1 times [2023-04-02 05:15:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:32,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375929644] [2023-04-02 05:15:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:15:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:15:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:15:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:15:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:15:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:15:32,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:32,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375929644] [2023-04-02 05:15:32,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375929644] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:32,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:32,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:32,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760647791] [2023-04-02 05:15:32,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:32,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:32,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:32,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:32,457 INFO L87 Difference]: Start difference. First operand 1923 states and 2605 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:15:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:35,268 INFO L93 Difference]: Finished difference Result 4100 states and 5647 transitions. [2023-04-02 05:15:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-04-02 05:15:35,269 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95 [2023-04-02 05:15:35,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:35,278 INFO L225 Difference]: With dead ends: 4100 [2023-04-02 05:15:35,279 INFO L226 Difference]: Without dead ends: 2818 [2023-04-02 05:15:35,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=854, Invalid=3976, Unknown=0, NotChecked=0, Total=4830 [2023-04-02 05:15:35,284 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 956 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:35,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 277 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:15:35,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2023-04-02 05:15:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2589. [2023-04-02 05:15:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 1948 states have (on average 1.3639630390143738) internal successors, (2657), 2016 states have internal predecessors, (2657), 287 states have call successors, (287), 287 states have call predecessors, (287), 353 states have return successors, (570), 285 states have call predecessors, (570), 286 states have call successors, (570) [2023-04-02 05:15:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3514 transitions. [2023-04-02 05:15:35,562 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3514 transitions. Word has length 95 [2023-04-02 05:15:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:35,562 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 3514 transitions. [2023-04-02 05:15:35,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-02 05:15:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3514 transitions. [2023-04-02 05:15:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 05:15:35,564 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:35,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:35,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:15:35,564 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:35,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash -79723287, now seen corresponding path program 1 times [2023-04-02 05:15:35,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:35,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493354428] [2023-04-02 05:15:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:15:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:15:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:15:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:15:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:15:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 05:15:35,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:35,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493354428] [2023-04-02 05:15:35,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493354428] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:35,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250809325] [2023-04-02 05:15:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:35,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:35,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:35,858 INFO L87 Difference]: Start difference. First operand 2589 states and 3514 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:15:38,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:38,555 INFO L93 Difference]: Finished difference Result 4349 states and 5975 transitions. [2023-04-02 05:15:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-02 05:15:38,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2023-04-02 05:15:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:38,567 INFO L225 Difference]: With dead ends: 4349 [2023-04-02 05:15:38,567 INFO L226 Difference]: Without dead ends: 2994 [2023-04-02 05:15:38,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=815, Invalid=3741, Unknown=0, NotChecked=0, Total=4556 [2023-04-02 05:15:38,574 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 860 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:38,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 244 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:15:38,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2023-04-02 05:15:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2663. [2023-04-02 05:15:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2002 states have (on average 1.358141858141858) internal successors, (2719), 2074 states have internal predecessors, (2719), 295 states have call successors, (295), 295 states have call predecessors, (295), 365 states have return successors, (581), 293 states have call predecessors, (581), 294 states have call successors, (581) [2023-04-02 05:15:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3595 transitions. [2023-04-02 05:15:38,894 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3595 transitions. Word has length 95 [2023-04-02 05:15:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:38,894 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3595 transitions. [2023-04-02 05:15:38,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:15:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3595 transitions. [2023-04-02 05:15:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-02 05:15:38,896 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:38,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:38,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:15:38,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:38,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:38,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2054851879, now seen corresponding path program 1 times [2023-04-02 05:15:38,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:38,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413288898] [2023-04-02 05:15:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:38,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:15:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:15:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:15:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:15:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:15:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 05:15:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413288898] [2023-04-02 05:15:39,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413288898] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:39,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:15:39,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 05:15:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642547555] [2023-04-02 05:15:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:39,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:15:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:15:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:15:39,198 INFO L87 Difference]: Start difference. First operand 2663 states and 3595 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:15:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:41,705 INFO L93 Difference]: Finished difference Result 6748 states and 9234 transitions. [2023-04-02 05:15:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-04-02 05:15:41,706 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2023-04-02 05:15:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:41,720 INFO L225 Difference]: With dead ends: 6748 [2023-04-02 05:15:41,721 INFO L226 Difference]: Without dead ends: 4365 [2023-04-02 05:15:41,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=695, Invalid=2965, Unknown=0, NotChecked=0, Total=3660 [2023-04-02 05:15:41,734 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 860 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:41,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 249 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:15:41,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4365 states. [2023-04-02 05:15:42,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 4106. [2023-04-02 05:15:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 3096 states have (on average 1.3643410852713178) internal successors, (4224), 3201 states have internal predecessors, (4224), 453 states have call successors, (453), 453 states have call predecessors, (453), 556 states have return successors, (897), 451 states have call predecessors, (897), 452 states have call successors, (897) [2023-04-02 05:15:42,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 5574 transitions. [2023-04-02 05:15:42,159 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 5574 transitions. Word has length 95 [2023-04-02 05:15:42,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:42,160 INFO L495 AbstractCegarLoop]: Abstraction has 4106 states and 5574 transitions. [2023-04-02 05:15:42,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:15:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 5574 transitions. [2023-04-02 05:15:42,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 05:15:42,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:42,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:42,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:15:42,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:42,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:42,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1932721393, now seen corresponding path program 1 times [2023-04-02 05:15:42,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:42,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263873013] [2023-04-02 05:15:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:42,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:15:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:15:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:15:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:15:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:15:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:15:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:15:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 05:15:42,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:42,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263873013] [2023-04-02 05:15:42,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263873013] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:15:42,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373897456] [2023-04-02 05:15:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:42,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:15:42,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:15:42,387 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 05:15:42,388 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 05:15:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:42,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:15:42,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:15:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:42,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:15:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:15:42,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373897456] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:15:42,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:15:42,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-04-02 05:15:42,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721803117] [2023-04-02 05:15:42,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:15:42,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:15:42,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:42,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:15:42,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:15:42,929 INFO L87 Difference]: Start difference. First operand 4106 states and 5574 transitions. Second operand has 19 states, 18 states have (on average 6.833333333333333) internal successors, (123), 14 states have internal predecessors, (123), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:15:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:45,365 INFO L93 Difference]: Finished difference Result 13368 states and 18433 transitions. [2023-04-02 05:15:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-02 05:15:45,366 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.833333333333333) internal successors, (123), 14 states have internal predecessors, (123), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 97 [2023-04-02 05:15:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:45,401 INFO L225 Difference]: With dead ends: 13368 [2023-04-02 05:15:45,402 INFO L226 Difference]: Without dead ends: 9329 [2023-04-02 05:15:45,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=481, Invalid=1589, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 05:15:45,414 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 861 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:45,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 129 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:15:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9329 states. [2023-04-02 05:15:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9329 to 8062. [2023-04-02 05:15:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8062 states, 6003 states have (on average 1.2995169082125604) internal successors, (7801), 6177 states have internal predecessors, (7801), 943 states have call successors, (943), 943 states have call predecessors, (943), 1115 states have return successors, (1961), 941 states have call predecessors, (1961), 942 states have call successors, (1961) [2023-04-02 05:15:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8062 states to 8062 states and 10705 transitions. [2023-04-02 05:15:46,313 INFO L78 Accepts]: Start accepts. Automaton has 8062 states and 10705 transitions. Word has length 97 [2023-04-02 05:15:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:46,314 INFO L495 AbstractCegarLoop]: Abstraction has 8062 states and 10705 transitions. [2023-04-02 05:15:46,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.833333333333333) internal successors, (123), 14 states have internal predecessors, (123), 7 states have call successors, (30), 12 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:15:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8062 states and 10705 transitions. [2023-04-02 05:15:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 05:15:46,318 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:46,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:46,327 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 05:15:46,528 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,SelfDestructingSolverStorable14 [2023-04-02 05:15:46,528 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:46,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1451767073, now seen corresponding path program 1 times [2023-04-02 05:15:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150451919] [2023-04-02 05:15:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:46,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:15:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:15:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:15:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:15:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:15:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:15:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:15:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 05:15:46,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:46,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150451919] [2023-04-02 05:15:46,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150451919] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:15:46,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699812583] [2023-04-02 05:15:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:46,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:15:46,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:15:46,733 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 05:15:46,740 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 05:15:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:46,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:15:46,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:15:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:46,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:15:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:15:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699812583] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:15:47,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:15:47,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-04-02 05:15:47,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026213288] [2023-04-02 05:15:47,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:15:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:15:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:15:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:15:47,129 INFO L87 Difference]: Start difference. First operand 8062 states and 10705 transitions. Second operand has 19 states, 18 states have (on average 7.111111111111111) internal successors, (128), 14 states have internal predecessors, (128), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:15:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:50,122 INFO L93 Difference]: Finished difference Result 22695 states and 30666 transitions. [2023-04-02 05:15:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-04-02 05:15:50,123 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 7.111111111111111) internal successors, (128), 14 states have internal predecessors, (128), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 99 [2023-04-02 05:15:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:50,173 INFO L225 Difference]: With dead ends: 22695 [2023-04-02 05:15:50,173 INFO L226 Difference]: Without dead ends: 15652 [2023-04-02 05:15:50,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2023-04-02 05:15:50,191 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 856 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:50,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 138 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:15:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15652 states. [2023-04-02 05:15:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15652 to 14399. [2023-04-02 05:15:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14399 states, 10539 states have (on average 1.2527754056362084) internal successors, (13203), 10845 states have internal predecessors, (13203), 1778 states have call successors, (1778), 1777 states have call predecessors, (1778), 2081 states have return successors, (3878), 1776 states have call predecessors, (3878), 1777 states have call successors, (3878) [2023-04-02 05:15:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14399 states to 14399 states and 18859 transitions. [2023-04-02 05:15:51,966 INFO L78 Accepts]: Start accepts. Automaton has 14399 states and 18859 transitions. Word has length 99 [2023-04-02 05:15:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:51,966 INFO L495 AbstractCegarLoop]: Abstraction has 14399 states and 18859 transitions. [2023-04-02 05:15:51,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 7.111111111111111) internal successors, (128), 14 states have internal predecessors, (128), 7 states have call successors, (30), 13 states have call predecessors, (30), 10 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2023-04-02 05:15:51,966 INFO L276 IsEmpty]: Start isEmpty. Operand 14399 states and 18859 transitions. [2023-04-02 05:15:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:15:51,969 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:51,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:51,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 05:15:52,175 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,SelfDestructingSolverStorable15 [2023-04-02 05:15:52,177 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:52,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:52,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1119178995, now seen corresponding path program 1 times [2023-04-02 05:15:52,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:52,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563848510] [2023-04-02 05:15:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:52,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:15:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:15:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:15:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:15:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:15:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:15:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:15:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 05:15:52,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563848510] [2023-04-02 05:15:52,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563848510] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:15:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389281819] [2023-04-02 05:15:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:52,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:15:52,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:15:52,450 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 05:15:52,453 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 05:15:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:52,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 05:15:52,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:15:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:15:52,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:15:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 05:15:53,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389281819] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:15:53,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:15:53,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 11] total 26 [2023-04-02 05:15:53,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906548299] [2023-04-02 05:15:53,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:15:53,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-02 05:15:53,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:53,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-02 05:15:53,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-04-02 05:15:53,072 INFO L87 Difference]: Start difference. First operand 14399 states and 18859 transitions. Second operand has 26 states, 26 states have (on average 6.230769230769231) internal successors, (162), 22 states have internal predecessors, (162), 7 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-04-02 05:15:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:56,749 INFO L93 Difference]: Finished difference Result 30545 states and 40264 transitions. [2023-04-02 05:15:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-04-02 05:15:56,750 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.230769230769231) internal successors, (162), 22 states have internal predecessors, (162), 7 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) Word has length 101 [2023-04-02 05:15:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:56,797 INFO L225 Difference]: With dead ends: 30545 [2023-04-02 05:15:56,797 INFO L226 Difference]: Without dead ends: 16391 [2023-04-02 05:15:56,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 212 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=638, Invalid=1912, Unknown=0, NotChecked=0, Total=2550 [2023-04-02 05:15:56,830 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1021 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:56,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 83 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:15:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16391 states. [2023-04-02 05:15:58,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16391 to 16019. [2023-04-02 05:15:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16019 states, 11660 states have (on average 1.2552315608919382) internal successors, (14636), 12266 states have internal predecessors, (14636), 1925 states have call successors, (1925), 1829 states have call predecessors, (1925), 2433 states have return successors, (4068), 1923 states have call predecessors, (4068), 1924 states have call successors, (4068) [2023-04-02 05:15:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16019 states to 16019 states and 20629 transitions. [2023-04-02 05:15:58,970 INFO L78 Accepts]: Start accepts. Automaton has 16019 states and 20629 transitions. Word has length 101 [2023-04-02 05:15:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:15:58,970 INFO L495 AbstractCegarLoop]: Abstraction has 16019 states and 20629 transitions. [2023-04-02 05:15:58,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.230769230769231) internal successors, (162), 22 states have internal predecessors, (162), 7 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2023-04-02 05:15:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 16019 states and 20629 transitions. [2023-04-02 05:15:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:15:58,973 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:15:58,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:58,981 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 05:15:59,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:15:59,181 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:15:59,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:15:59,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1249871027, now seen corresponding path program 1 times [2023-04-02 05:15:59,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:15:59,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204204954] [2023-04-02 05:15:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:59,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:15:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:15:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:15:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:15:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:15:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:15:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 05:15:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:15:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:15:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:15:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:15:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:15:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 05:15:59,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:15:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204204954] [2023-04-02 05:15:59,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204204954] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:15:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244736078] [2023-04-02 05:15:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:15:59,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:15:59,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:15:59,401 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 05:15:59,403 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 05:15:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:15:59,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:15:59,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:15:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 05:15:59,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:15:59,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244736078] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:15:59,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:15:59,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 9 [2023-04-02 05:15:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975152785] [2023-04-02 05:15:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:15:59,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:15:59,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:59,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:15:59,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:15:59,580 INFO L87 Difference]: Start difference. First operand 16019 states and 20629 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:16:01,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:16:01,443 INFO L93 Difference]: Finished difference Result 28567 states and 36897 transitions. [2023-04-02 05:16:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:16:01,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 101 [2023-04-02 05:16:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:16:01,485 INFO L225 Difference]: With dead ends: 28567 [2023-04-02 05:16:01,486 INFO L226 Difference]: Without dead ends: 13211 [2023-04-02 05:16:01,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:16:01,520 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 133 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:16:01,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 93 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:16:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13211 states. [2023-04-02 05:16:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13211 to 12819. [2023-04-02 05:16:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12819 states, 9377 states have (on average 1.2204329742988163) internal successors, (11444), 9614 states have internal predecessors, (11444), 1603 states have call successors, (1603), 1603 states have call predecessors, (1603), 1838 states have return successors, (3028), 1601 states have call predecessors, (3028), 1602 states have call successors, (3028) [2023-04-02 05:16:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12819 states to 12819 states and 16075 transitions. [2023-04-02 05:16:03,356 INFO L78 Accepts]: Start accepts. Automaton has 12819 states and 16075 transitions. Word has length 101 [2023-04-02 05:16:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:16:03,356 INFO L495 AbstractCegarLoop]: Abstraction has 12819 states and 16075 transitions. [2023-04-02 05:16:03,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:16:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 12819 states and 16075 transitions. [2023-04-02 05:16:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:16:03,357 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:16:03,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:03,366 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 05:16:03,563 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 05:16:03,564 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:16:03,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:16:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1412640527, now seen corresponding path program 2 times [2023-04-02 05:16:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:16:03,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515095482] [2023-04-02 05:16:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:16:03,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:16:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:16:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:16:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 05:16:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 05:16:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:16:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-04-02 05:16:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 05:16:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:16:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:16:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:04,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:16:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:16:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:16:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 05:16:04,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:16:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515095482] [2023-04-02 05:16:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515095482] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:16:04,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680479841] [2023-04-02 05:16:04,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 05:16:04,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:16:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:16:04,014 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 05:16:04,040 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 05:16:04,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 05:16:04,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 05:16:04,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 61 conjunts are in the unsatisfiable core [2023-04-02 05:16:04,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:16:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:16:09,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:16:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:16:14,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680479841] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:16:14,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:16:14,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 28] total 66 [2023-04-02 05:16:14,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435959700] [2023-04-02 05:16:14,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:16:14,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-04-02 05:16:14,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:16:14,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-04-02 05:16:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=3794, Unknown=0, NotChecked=0, Total=4290 [2023-04-02 05:16:14,697 INFO L87 Difference]: Start difference. First operand 12819 states and 16075 transitions. Second operand has 66 states, 61 states have (on average 3.098360655737705) internal successors, (189), 57 states have internal predecessors, (189), 18 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (31), 15 states have call predecessors, (31), 17 states have call successors, (31)