./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec7_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec7_product19.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a4e3d1ef75cde0243f57ce4bcedb5827704adb835017a69deaa6c50c3201720 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:31:06,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:31:06,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:31:06,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:31:06,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:31:06,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:31:06,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:31:06,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:31:06,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:31:06,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:31:06,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:31:06,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:31:06,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:31:06,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:31:06,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:31:06,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:31:06,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:31:06,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:31:06,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:31:06,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:31:06,966 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:31:06,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:31:06,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:31:06,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:31:06,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:31:06,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:31:06,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:31:06,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:31:06,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:31:06,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:31:06,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:31:06,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:31:06,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:31:06,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:31:06,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:31:06,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:31:06,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:31:06,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:31:06,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:31:06,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:31:06,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:31:06,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:31:06,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:31:07,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:31:07,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:31:07,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:31:07,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:31:07,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:31:07,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:31:07,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:31:07,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:31:07,020 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:31:07,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:31:07,021 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:31:07,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:31:07,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:31:07,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:31:07,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:31:07,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:31:07,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:31:07,022 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:31:07,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:31:07,023 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:31:07,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:31:07,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:31:07,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:31:07,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:31:07,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:31:07,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:31:07,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:31:07,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:31:07,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:31:07,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:31:07,025 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:31:07,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:31:07,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:31:07,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a4e3d1ef75cde0243f57ce4bcedb5827704adb835017a69deaa6c50c3201720 [2022-07-22 17:31:07,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:31:07,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:31:07,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:31:07,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:31:07,271 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:31:07,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec7_product19.cil.c [2022-07-22 17:31:07,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec6cc992/d4f1102c2db245498355d80fac96fc20/FLAG72368bdbf [2022-07-22 17:31:07,799 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:31:07,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product19.cil.c [2022-07-22 17:31:07,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec6cc992/d4f1102c2db245498355d80fac96fc20/FLAG72368bdbf [2022-07-22 17:31:08,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec6cc992/d4f1102c2db245498355d80fac96fc20 [2022-07-22 17:31:08,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:31:08,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:31:08,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:31:08,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:31:08,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:31:08,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74783b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08, skipping insertion in model container [2022-07-22 17:31:08,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:31:08,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:31:08,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product19.cil.c[37206,37219] [2022-07-22 17:31:08,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:31:08,707 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:31:08,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product19.cil.c[37206,37219] [2022-07-22 17:31:08,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:31:08,840 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:31:08,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08 WrapperNode [2022-07-22 17:31:08,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:31:08,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:31:08,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:31:08,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:31:08,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,923 INFO L137 Inliner]: procedures = 127, calls = 196, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 990 [2022-07-22 17:31:08,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:31:08,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:31:08,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:31:08,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:31:08,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:08,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:31:08,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:31:08,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:31:08,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:31:08,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (1/1) ... [2022-07-22 17:31:09,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:31:09,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:31:09,032 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) [2022-07-22 17:31:09,046 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 [2022-07-22 17:31:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-22 17:31:09,075 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-22 17:31:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-22 17:31:09,076 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-22 17:31:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-22 17:31:09,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-22 17:31:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-22 17:31:09,076 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-22 17:31:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-22 17:31:09,077 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-22 17:31:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-22 17:31:09,077 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-22 17:31:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-22 17:31:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-22 17:31:09,078 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-22 17:31:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-22 17:31:09,078 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-22 17:31:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:31:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-22 17:31:09,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-22 17:31:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-22 17:31:09,079 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-22 17:31:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-22 17:31:09,079 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-22 17:31:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-22 17:31:09,079 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-22 17:31:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-22 17:31:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-22 17:31:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-22 17:31:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-22 17:31:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-22 17:31:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-22 17:31:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:31:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-22 17:31:09,081 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-22 17:31:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:31:09,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:31:09,299 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:31:09,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:31:09,927 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:31:09,935 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:31:09,936 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:31:09,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:31:09 BoogieIcfgContainer [2022-07-22 17:31:09,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:31:09,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:31:09,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:31:09,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:31:09,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:31:08" (1/3) ... [2022-07-22 17:31:09,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4ebea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:31:09, skipping insertion in model container [2022-07-22 17:31:09,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:31:08" (2/3) ... [2022-07-22 17:31:09,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4ebea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:31:09, skipping insertion in model container [2022-07-22 17:31:09,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:31:09" (3/3) ... [2022-07-22 17:31:09,946 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product19.cil.c [2022-07-22 17:31:09,960 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:31:09,961 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:31:10,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:31:10,013 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@68e10cf9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78d6360f [2022-07-22 17:31:10,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:31:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 301 states, 241 states have (on average 1.5352697095435686) internal successors, (370), 243 states have internal predecessors, (370), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-22 17:31:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-22 17:31:10,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:10,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:10,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:10,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash 656283880, now seen corresponding path program 1 times [2022-07-22 17:31:10,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:10,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178210451] [2022-07-22 17:31:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:10,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:31:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:31:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:31:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:31:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 17:31:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:31:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:31:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:31:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:31:10,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:10,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178210451] [2022-07-22 17:31:10,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178210451] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:31:10,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966571946] [2022-07-22 17:31:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:10,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:10,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:31:10,439 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) [2022-07-22 17:31:10,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:31:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:10,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 17:31:10,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:31:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:31:10,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:31:10,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966571946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:10,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:31:10,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-22 17:31:10,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038350584] [2022-07-22 17:31:10,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:10,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:31:10,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:10,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:31:10,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:31:10,765 INFO L87 Difference]: Start difference. First operand has 301 states, 241 states have (on average 1.5352697095435686) internal successors, (370), 243 states have internal predecessors, (370), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:10,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:10,815 INFO L93 Difference]: Finished difference Result 448 states and 662 transitions. [2022-07-22 17:31:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:31:10,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 86 [2022-07-22 17:31:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:10,838 INFO L225 Difference]: With dead ends: 448 [2022-07-22 17:31:10,839 INFO L226 Difference]: Without dead ends: 294 [2022-07-22 17:31:10,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:31:10,856 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:10,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:31:10,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-22 17:31:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-07-22 17:31:10,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 235 states have (on average 1.5276595744680852) internal successors, (359), 236 states have internal predecessors, (359), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-22 17:31:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 442 transitions. [2022-07-22 17:31:10,926 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 442 transitions. Word has length 86 [2022-07-22 17:31:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:10,928 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 442 transitions. [2022-07-22 17:31:10,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 442 transitions. [2022-07-22 17:31:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-22 17:31:10,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:10,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:10,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 17:31:11,147 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,SelfDestructingSolverStorable0 [2022-07-22 17:31:11,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:11,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:11,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1471014267, now seen corresponding path program 1 times [2022-07-22 17:31:11,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:11,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418837577] [2022-07-22 17:31:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:11,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:31:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:31:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:31:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:31:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 17:31:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:31:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:31:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:31:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:31:11,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:11,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418837577] [2022-07-22 17:31:11,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418837577] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:31:11,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53570705] [2022-07-22 17:31:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:11,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:11,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:31:11,349 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) [2022-07-22 17:31:11,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:31:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:11,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:31:11,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:31:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:31:11,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:31:11,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53570705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:11,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:31:11,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:31:11,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554936406] [2022-07-22 17:31:11,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:11,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:31:11,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:11,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:31:11,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:31:11,633 INFO L87 Difference]: Start difference. First operand 294 states and 442 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:11,670 INFO L93 Difference]: Finished difference Result 438 states and 643 transitions. [2022-07-22 17:31:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:31:11,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2022-07-22 17:31:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:11,673 INFO L225 Difference]: With dead ends: 438 [2022-07-22 17:31:11,673 INFO L226 Difference]: Without dead ends: 297 [2022-07-22 17:31:11,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:31:11,675 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:11,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 878 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:31:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-22 17:31:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2022-07-22 17:31:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 237 states have (on average 1.5232067510548524) internal successors, (361), 238 states have internal predecessors, (361), 42 states have call successors, (42), 16 states have call predecessors, (42), 16 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-22 17:31:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 444 transitions. [2022-07-22 17:31:11,704 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 444 transitions. Word has length 87 [2022-07-22 17:31:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:11,704 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 444 transitions. [2022-07-22 17:31:11,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 444 transitions. [2022-07-22 17:31:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 17:31:11,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:11,709 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:11,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:31:11,909 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,SelfDestructingSolverStorable1 [2022-07-22 17:31:11,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:11,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1546828526, now seen corresponding path program 1 times [2022-07-22 17:31:11,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:11,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136219380] [2022-07-22 17:31:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:31:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:31:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:31:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:31:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:31:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:31:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:31:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:31:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:31:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:12,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136219380] [2022-07-22 17:31:12,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136219380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:31:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837828062] [2022-07-22 17:31:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:12,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:31:12,138 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) [2022-07-22 17:31:12,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:31:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:31:12,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:31:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:31:12,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:31:12,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837828062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:12,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:31:12,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-22 17:31:12,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522319003] [2022-07-22 17:31:12,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:12,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:31:12,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:31:12,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:31:12,459 INFO L87 Difference]: Start difference. First operand 296 states and 444 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:12,499 INFO L93 Difference]: Finished difference Result 622 states and 947 transitions. [2022-07-22 17:31:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:31:12,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-07-22 17:31:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:12,503 INFO L225 Difference]: With dead ends: 622 [2022-07-22 17:31:12,503 INFO L226 Difference]: Without dead ends: 353 [2022-07-22 17:31:12,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:31:12,506 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 107 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:12,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 851 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:31:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-22 17:31:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 345. [2022-07-22 17:31:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 275 states have (on average 1.538181818181818) internal successors, (423), 276 states have internal predecessors, (423), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-22 17:31:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 528 transitions. [2022-07-22 17:31:12,533 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 528 transitions. Word has length 93 [2022-07-22 17:31:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:12,534 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 528 transitions. [2022-07-22 17:31:12,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 528 transitions. [2022-07-22 17:31:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 17:31:12,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:12,538 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:12,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 17:31:12,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:12,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:12,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash -519295329, now seen corresponding path program 1 times [2022-07-22 17:31:12,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:12,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971437360] [2022-07-22 17:31:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:12,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:31:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:31:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:31:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 17:31:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:31:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:31:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:31:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:31:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:31:12,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:12,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971437360] [2022-07-22 17:31:12,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971437360] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:31:12,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878468995] [2022-07-22 17:31:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:12,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:31:12,924 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) [2022-07-22 17:31:12,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:31:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:31:13,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:31:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:31:13,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:31:13,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878468995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:13,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:31:13,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-22 17:31:13,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730837014] [2022-07-22 17:31:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:13,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:31:13,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:31:13,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:31:13,250 INFO L87 Difference]: Start difference. First operand 345 states and 528 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:31:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:13,351 INFO L93 Difference]: Finished difference Result 681 states and 1046 transitions. [2022-07-22 17:31:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:31:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94 [2022-07-22 17:31:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:13,356 INFO L225 Difference]: With dead ends: 681 [2022-07-22 17:31:13,356 INFO L226 Difference]: Without dead ends: 347 [2022-07-22 17:31:13,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:13,358 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 125 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:13,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1587 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:31:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-22 17:31:13,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2022-07-22 17:31:13,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 276 states have (on average 1.536231884057971) internal successors, (424), 278 states have internal predecessors, (424), 53 states have call successors, (53), 16 states have call predecessors, (53), 17 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2022-07-22 17:31:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 531 transitions. [2022-07-22 17:31:13,390 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 531 transitions. Word has length 94 [2022-07-22 17:31:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:13,391 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 531 transitions. [2022-07-22 17:31:13,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:31:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 531 transitions. [2022-07-22 17:31:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 17:31:13,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:13,394 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:13,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:31:13,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:13,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash 600148154, now seen corresponding path program 1 times [2022-07-22 17:31:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:13,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144299555] [2022-07-22 17:31:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:13,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:31:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:31:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:31:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:31:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:31:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:31:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:31:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:31:13,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144299555] [2022-07-22 17:31:13,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144299555] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:31:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144239712] [2022-07-22 17:31:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:13,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:13,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:31:13,769 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) [2022-07-22 17:31:13,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:31:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:13,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 17:31:14,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:31:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:31:14,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:31:14,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144239712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:14,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:31:14,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-22 17:31:14,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718959444] [2022-07-22 17:31:14,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:14,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:31:14,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:14,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:31:14,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:31:14,070 INFO L87 Difference]: Start difference. First operand 347 states and 531 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:31:14,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:14,141 INFO L93 Difference]: Finished difference Result 683 states and 1051 transitions. [2022-07-22 17:31:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:31:14,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95 [2022-07-22 17:31:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:14,144 INFO L225 Difference]: With dead ends: 683 [2022-07-22 17:31:14,144 INFO L226 Difference]: Without dead ends: 349 [2022-07-22 17:31:14,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:31:14,147 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 124 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:14,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1576 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:31:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-07-22 17:31:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2022-07-22 17:31:14,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 277 states have (on average 1.5342960288808665) internal successors, (425), 280 states have internal predecessors, (425), 53 states have call successors, (53), 16 states have call predecessors, (53), 18 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-07-22 17:31:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 537 transitions. [2022-07-22 17:31:14,183 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 537 transitions. Word has length 95 [2022-07-22 17:31:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:14,183 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 537 transitions. [2022-07-22 17:31:14,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:31:14,184 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 537 transitions. [2022-07-22 17:31:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 17:31:14,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:14,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:14,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:31:14,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:14,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -610725529, now seen corresponding path program 1 times [2022-07-22 17:31:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:14,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790228651] [2022-07-22 17:31:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:14,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:31:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:31:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 17:31:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:31:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:31:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:31:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:31:14,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:14,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790228651] [2022-07-22 17:31:14,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790228651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:14,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:14,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:31:14,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859813354] [2022-07-22 17:31:14,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:14,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:31:14,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:31:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:31:14,523 INFO L87 Difference]: Start difference. First operand 349 states and 537 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:31:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:16,165 INFO L93 Difference]: Finished difference Result 831 states and 1280 transitions. [2022-07-22 17:31:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:31:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2022-07-22 17:31:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:16,170 INFO L225 Difference]: With dead ends: 831 [2022-07-22 17:31:16,170 INFO L226 Difference]: Without dead ends: 505 [2022-07-22 17:31:16,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:31:16,173 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 1063 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:16,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1384 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 17:31:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-07-22 17:31:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 349. [2022-07-22 17:31:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 277 states have (on average 1.5342960288808665) internal successors, (425), 280 states have internal predecessors, (425), 53 states have call successors, (53), 16 states have call predecessors, (53), 18 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2022-07-22 17:31:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 536 transitions. [2022-07-22 17:31:16,202 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 536 transitions. Word has length 96 [2022-07-22 17:31:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:16,203 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 536 transitions. [2022-07-22 17:31:16,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:31:16,203 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 536 transitions. [2022-07-22 17:31:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 17:31:16,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:16,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:16,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:31:16,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:16,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1759702684, now seen corresponding path program 2 times [2022-07-22 17:31:16,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:16,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169689892] [2022-07-22 17:31:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:31:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:31:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 17:31:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:31:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:31:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:31:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:31:16,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:16,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169689892] [2022-07-22 17:31:16,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169689892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:16,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:16,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:31:16,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875373956] [2022-07-22 17:31:16,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:16,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:31:16,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:16,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:31:16,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:31:16,334 INFO L87 Difference]: Start difference. First operand 349 states and 536 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:31:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:17,912 INFO L93 Difference]: Finished difference Result 833 states and 1283 transitions. [2022-07-22 17:31:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:31:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-22 17:31:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:17,916 INFO L225 Difference]: With dead ends: 833 [2022-07-22 17:31:17,916 INFO L226 Difference]: Without dead ends: 507 [2022-07-22 17:31:17,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:31:17,918 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 1058 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:17,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 1385 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:31:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-22 17:31:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 351. [2022-07-22 17:31:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 278 states have (on average 1.5323741007194245) internal successors, (426), 282 states have internal predecessors, (426), 53 states have call successors, (53), 16 states have call predecessors, (53), 19 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2022-07-22 17:31:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 539 transitions. [2022-07-22 17:31:17,949 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 539 transitions. Word has length 97 [2022-07-22 17:31:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:17,949 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 539 transitions. [2022-07-22 17:31:17,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 17:31:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 539 transitions. [2022-07-22 17:31:17,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-22 17:31:17,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:17,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:31:17,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash 827408162, now seen corresponding path program 1 times [2022-07-22 17:31:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:17,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788769800] [2022-07-22 17:31:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:17,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:31:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:31:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:31:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:31:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:31:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:31:18,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788769800] [2022-07-22 17:31:18,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788769800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:18,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:18,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:31:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025345290] [2022-07-22 17:31:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:18,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:31:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:31:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:31:18,083 INFO L87 Difference]: Start difference. First operand 351 states and 539 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 17:31:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:20,263 INFO L93 Difference]: Finished difference Result 831 states and 1278 transitions. [2022-07-22 17:31:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:31:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 98 [2022-07-22 17:31:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:20,267 INFO L225 Difference]: With dead ends: 831 [2022-07-22 17:31:20,267 INFO L226 Difference]: Without dead ends: 507 [2022-07-22 17:31:20,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:31:20,270 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1163 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:20,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1689 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 17:31:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-22 17:31:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 351. [2022-07-22 17:31:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 278 states have (on average 1.5323741007194245) internal successors, (426), 282 states have internal predecessors, (426), 53 states have call successors, (53), 16 states have call predecessors, (53), 19 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-07-22 17:31:20,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 538 transitions. [2022-07-22 17:31:20,295 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 538 transitions. Word has length 98 [2022-07-22 17:31:20,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:20,295 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 538 transitions. [2022-07-22 17:31:20,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 17:31:20,296 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 538 transitions. [2022-07-22 17:31:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 17:31:20,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:20,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:20,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:31:20,298 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:20,298 INFO L85 PathProgramCache]: Analyzing trace with hash -173000395, now seen corresponding path program 2 times [2022-07-22 17:31:20,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:20,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082647046] [2022-07-22 17:31:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:31:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:31:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:31:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:31:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:31:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:31:20,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:20,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082647046] [2022-07-22 17:31:20,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082647046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:20,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:20,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 17:31:20,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340309656] [2022-07-22 17:31:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:20,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 17:31:20,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:20,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 17:31:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:31:20,429 INFO L87 Difference]: Start difference. First operand 351 states and 538 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 17:31:22,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:22,615 INFO L93 Difference]: Finished difference Result 833 states and 1284 transitions. [2022-07-22 17:31:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:31:22,616 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 99 [2022-07-22 17:31:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:22,620 INFO L225 Difference]: With dead ends: 833 [2022-07-22 17:31:22,620 INFO L226 Difference]: Without dead ends: 509 [2022-07-22 17:31:22,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-22 17:31:22,624 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1163 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3495 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 3893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 3495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:22,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1686 Invalid, 3893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 3495 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 17:31:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-07-22 17:31:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 353. [2022-07-22 17:31:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 279 states have (on average 1.5304659498207884) internal successors, (427), 284 states have internal predecessors, (427), 53 states have call successors, (53), 16 states have call predecessors, (53), 20 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2022-07-22 17:31:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 544 transitions. [2022-07-22 17:31:22,660 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 544 transitions. Word has length 99 [2022-07-22 17:31:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:22,661 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 544 transitions. [2022-07-22 17:31:22,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 17:31:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 544 transitions. [2022-07-22 17:31:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 17:31:22,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:22,663 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:22,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:31:22,663 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1019207715, now seen corresponding path program 1 times [2022-07-22 17:31:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:22,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790776131] [2022-07-22 17:31:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:22,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:31:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 17:31:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:31:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:31:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:31:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:22,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:22,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790776131] [2022-07-22 17:31:22,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790776131] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:31:22,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884274136] [2022-07-22 17:31:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:22,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:31:22,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:31:22,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:31:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:23,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:31:23,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:31:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:23,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:31:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:23,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884274136] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:31:23,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:31:23,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-22 17:31:23,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356979344] [2022-07-22 17:31:23,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:31:23,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:31:23,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:23,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:31:23,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:31:23,111 INFO L87 Difference]: Start difference. First operand 353 states and 544 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:31:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:24,778 INFO L93 Difference]: Finished difference Result 1002 states and 1612 transitions. [2022-07-22 17:31:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:31:24,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 100 [2022-07-22 17:31:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:24,786 INFO L225 Difference]: With dead ends: 1002 [2022-07-22 17:31:24,786 INFO L226 Difference]: Without dead ends: 861 [2022-07-22 17:31:24,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:31:24,789 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1332 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 2245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:24,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1761 Invalid, 2245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 17:31:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-07-22 17:31:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 681. [2022-07-22 17:31:24,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 543 states have (on average 1.5930018416206262) internal successors, (865), 548 states have internal predecessors, (865), 117 states have call successors, (117), 16 states have call predecessors, (117), 20 states have return successors, (138), 116 states have call predecessors, (138), 116 states have call successors, (138) [2022-07-22 17:31:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1120 transitions. [2022-07-22 17:31:24,841 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1120 transitions. Word has length 100 [2022-07-22 17:31:24,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:24,841 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 1120 transitions. [2022-07-22 17:31:24,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 17:31:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1120 transitions. [2022-07-22 17:31:24,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 17:31:24,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:24,863 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:24,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 17:31:25,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:31:25,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash -123309536, now seen corresponding path program 1 times [2022-07-22 17:31:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:25,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473901494] [2022-07-22 17:31:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:31:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:31:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:31:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:31:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:31:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:25,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:25,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473901494] [2022-07-22 17:31:25,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473901494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:25,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:25,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:25,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725072196] [2022-07-22 17:31:25,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:25,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:25,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:25,193 INFO L87 Difference]: Start difference. First operand 681 states and 1120 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:26,441 INFO L93 Difference]: Finished difference Result 1783 states and 2983 transitions. [2022-07-22 17:31:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:26,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2022-07-22 17:31:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:26,450 INFO L225 Difference]: With dead ends: 1783 [2022-07-22 17:31:26,450 INFO L226 Difference]: Without dead ends: 1170 [2022-07-22 17:31:26,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:26,453 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1046 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:26,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1305 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:31:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-07-22 17:31:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1006. [2022-07-22 17:31:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 804 states have (on average 1.6044776119402986) internal successors, (1290), 809 states have internal predecessors, (1290), 181 states have call successors, (181), 16 states have call predecessors, (181), 20 states have return successors, (212), 180 states have call predecessors, (212), 180 states have call successors, (212) [2022-07-22 17:31:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1683 transitions. [2022-07-22 17:31:26,517 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1683 transitions. Word has length 106 [2022-07-22 17:31:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:26,518 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1683 transitions. [2022-07-22 17:31:26,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1683 transitions. [2022-07-22 17:31:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 17:31:26,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:26,522 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:26,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:31:26,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash -939436204, now seen corresponding path program 1 times [2022-07-22 17:31:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:26,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239026237] [2022-07-22 17:31:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:26,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:31:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:31:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:31:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:31:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:31:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:26,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:26,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239026237] [2022-07-22 17:31:26,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239026237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:26,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:26,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:26,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362277312] [2022-07-22 17:31:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:26,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:26,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:26,614 INFO L87 Difference]: Start difference. First operand 1006 states and 1683 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:27,832 INFO L93 Difference]: Finished difference Result 2563 states and 4332 transitions. [2022-07-22 17:31:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:27,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2022-07-22 17:31:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:27,843 INFO L225 Difference]: With dead ends: 2563 [2022-07-22 17:31:27,844 INFO L226 Difference]: Without dead ends: 1678 [2022-07-22 17:31:27,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:27,849 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1044 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:27,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1246 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:31:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2022-07-22 17:31:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1514. [2022-07-22 17:31:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1217 states have (on average 1.6113393590797043) internal successors, (1961), 1222 states have internal predecessors, (1961), 276 states have call successors, (276), 16 states have call predecessors, (276), 20 states have return successors, (307), 275 states have call predecessors, (307), 275 states have call successors, (307) [2022-07-22 17:31:27,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2544 transitions. [2022-07-22 17:31:27,949 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2544 transitions. Word has length 107 [2022-07-22 17:31:27,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:27,950 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 2544 transitions. [2022-07-22 17:31:27,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2544 transitions. [2022-07-22 17:31:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 17:31:27,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:27,973 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:27,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:31:27,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1004305410, now seen corresponding path program 1 times [2022-07-22 17:31:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:27,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581021210] [2022-07-22 17:31:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:27,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:31:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:31:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:31:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:31:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:31:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:28,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581021210] [2022-07-22 17:31:28,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581021210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:28,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:28,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631463446] [2022-07-22 17:31:28,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:28,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:28,065 INFO L87 Difference]: Start difference. First operand 1514 states and 2544 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:29,217 INFO L93 Difference]: Finished difference Result 3715 states and 6341 transitions. [2022-07-22 17:31:29,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:29,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2022-07-22 17:31:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:29,231 INFO L225 Difference]: With dead ends: 3715 [2022-07-22 17:31:29,231 INFO L226 Difference]: Without dead ends: 2447 [2022-07-22 17:31:29,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:29,237 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 1042 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:29,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1240 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:31:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2022-07-22 17:31:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2283. [2022-07-22 17:31:29,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 1863 states have (on average 1.6167471819645733) internal successors, (3012), 1868 states have internal predecessors, (3012), 399 states have call successors, (399), 16 states have call predecessors, (399), 20 states have return successors, (446), 398 states have call predecessors, (446), 398 states have call successors, (446) [2022-07-22 17:31:29,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3857 transitions. [2022-07-22 17:31:29,364 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3857 transitions. Word has length 108 [2022-07-22 17:31:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:29,364 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 3857 transitions. [2022-07-22 17:31:29,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3857 transitions. [2022-07-22 17:31:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:31:29,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:29,373 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:31:29,373 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1214672019, now seen corresponding path program 1 times [2022-07-22 17:31:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:29,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082482038] [2022-07-22 17:31:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:31:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:31:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:31:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:31:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:31:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:29,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:29,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082482038] [2022-07-22 17:31:29,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082482038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:29,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:29,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:29,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118789819] [2022-07-22 17:31:29,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:29,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:29,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:29,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:29,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:29,473 INFO L87 Difference]: Start difference. First operand 2283 states and 3857 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:30,634 INFO L93 Difference]: Finished difference Result 5509 states and 9475 transitions. [2022-07-22 17:31:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:30,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-22 17:31:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:30,654 INFO L225 Difference]: With dead ends: 5509 [2022-07-22 17:31:30,655 INFO L226 Difference]: Without dead ends: 3676 [2022-07-22 17:31:30,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:30,661 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1047 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:30,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 1232 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:31:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2022-07-22 17:31:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3512. [2022-07-22 17:31:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3512 states, 2913 states have (on average 1.619979402677652) internal successors, (4719), 2918 states have internal predecessors, (4719), 578 states have call successors, (578), 16 states have call predecessors, (578), 20 states have return successors, (651), 577 states have call predecessors, (651), 577 states have call successors, (651) [2022-07-22 17:31:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 5948 transitions. [2022-07-22 17:31:30,859 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 5948 transitions. Word has length 109 [2022-07-22 17:31:30,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:30,860 INFO L495 AbstractCegarLoop]: Abstraction has 3512 states and 5948 transitions. [2022-07-22 17:31:30,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 5948 transitions. [2022-07-22 17:31:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 17:31:30,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:30,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:30,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:31:30,870 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:30,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1692208126, now seen corresponding path program 1 times [2022-07-22 17:31:30,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:30,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638997432] [2022-07-22 17:31:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:30,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:31:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:31:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:31:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:31:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:31:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:30,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:30,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638997432] [2022-07-22 17:31:30,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638997432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:30,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:30,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:30,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599694096] [2022-07-22 17:31:30,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:30,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:30,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:30,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:30,988 INFO L87 Difference]: Start difference. First operand 3512 states and 5948 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:32,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:32,218 INFO L93 Difference]: Finished difference Result 8457 states and 14622 transitions. [2022-07-22 17:31:32,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:32,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-22 17:31:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:32,249 INFO L225 Difference]: With dead ends: 8457 [2022-07-22 17:31:32,250 INFO L226 Difference]: Without dead ends: 5707 [2022-07-22 17:31:32,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:32,261 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1045 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:32,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1270 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:31:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-07-22 17:31:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5543. [2022-07-22 17:31:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5543 states, 4568 states have (on average 1.6136164623467601) internal successors, (7371), 4573 states have internal predecessors, (7371), 954 states have call successors, (954), 16 states have call predecessors, (954), 20 states have return successors, (1071), 953 states have call predecessors, (1071), 953 states have call successors, (1071) [2022-07-22 17:31:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 9396 transitions. [2022-07-22 17:31:32,631 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 9396 transitions. Word has length 110 [2022-07-22 17:31:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:32,632 INFO L495 AbstractCegarLoop]: Abstraction has 5543 states and 9396 transitions. [2022-07-22 17:31:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 9396 transitions. [2022-07-22 17:31:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:31:32,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:32,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:32,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:31:32,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash 648134799, now seen corresponding path program 1 times [2022-07-22 17:31:32,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:32,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574461173] [2022-07-22 17:31:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:32,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:31:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:31:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:31:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:31:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:31:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:32,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:32,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574461173] [2022-07-22 17:31:32,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574461173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:32,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:32,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:32,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934960502] [2022-07-22 17:31:32,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:32,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:32,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:32,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:32,729 INFO L87 Difference]: Start difference. First operand 5543 states and 9396 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:34,157 INFO L93 Difference]: Finished difference Result 13794 states and 23843 transitions. [2022-07-22 17:31:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:34,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-07-22 17:31:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:34,207 INFO L225 Difference]: With dead ends: 13794 [2022-07-22 17:31:34,207 INFO L226 Difference]: Without dead ends: 9390 [2022-07-22 17:31:34,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:34,227 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1043 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:34,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1238 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:31:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2022-07-22 17:31:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 9226. [2022-07-22 17:31:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9226 states, 7645 states have (on average 1.6111183780248528) internal successors, (12317), 7650 states have internal predecessors, (12317), 1560 states have call successors, (1560), 16 states have call predecessors, (1560), 20 states have return successors, (1755), 1559 states have call predecessors, (1755), 1559 states have call successors, (1755) [2022-07-22 17:31:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9226 states to 9226 states and 15632 transitions. [2022-07-22 17:31:34,774 INFO L78 Accepts]: Start accepts. Automaton has 9226 states and 15632 transitions. Word has length 111 [2022-07-22 17:31:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:34,774 INFO L495 AbstractCegarLoop]: Abstraction has 9226 states and 15632 transitions. [2022-07-22 17:31:34,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 9226 states and 15632 transitions. [2022-07-22 17:31:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:31:34,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:34,789 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:34,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:31:34,789 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:34,790 INFO L85 PathProgramCache]: Analyzing trace with hash 841308180, now seen corresponding path program 1 times [2022-07-22 17:31:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:34,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22975762] [2022-07-22 17:31:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:31:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:31:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:31:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:31:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:31:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:34,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:34,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22975762] [2022-07-22 17:31:34,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22975762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:34,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:34,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:34,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058152116] [2022-07-22 17:31:34,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:34,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:34,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:34,876 INFO L87 Difference]: Start difference. First operand 9226 states and 15632 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:36,474 INFO L93 Difference]: Finished difference Result 23978 states and 41389 transitions. [2022-07-22 17:31:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:36,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-22 17:31:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:36,535 INFO L225 Difference]: With dead ends: 23978 [2022-07-22 17:31:36,535 INFO L226 Difference]: Without dead ends: 16343 [2022-07-22 17:31:36,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:36,562 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1035 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:36,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1257 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:31:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16343 states. [2022-07-22 17:31:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16343 to 16179. [2022-07-22 17:31:37,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16179 states, 13395 states have (on average 1.6020156774916015) internal successors, (21459), 13400 states have internal predecessors, (21459), 2763 states have call successors, (2763), 16 states have call predecessors, (2763), 20 states have return successors, (3102), 2762 states have call predecessors, (3102), 2762 states have call successors, (3102) [2022-07-22 17:31:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16179 states to 16179 states and 27324 transitions. [2022-07-22 17:31:37,555 INFO L78 Accepts]: Start accepts. Automaton has 16179 states and 27324 transitions. Word has length 112 [2022-07-22 17:31:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:37,555 INFO L495 AbstractCegarLoop]: Abstraction has 16179 states and 27324 transitions. [2022-07-22 17:31:37,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16179 states and 27324 transitions. [2022-07-22 17:31:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:31:37,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:37,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:37,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:31:37,575 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash 481953966, now seen corresponding path program 1 times [2022-07-22 17:31:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:37,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730426977] [2022-07-22 17:31:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:31:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:31:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:31:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:31:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:31:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:37,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730426977] [2022-07-22 17:31:37,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730426977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:37,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:37,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823505202] [2022-07-22 17:31:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:37,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:37,654 INFO L87 Difference]: Start difference. First operand 16179 states and 27324 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:39,927 INFO L93 Difference]: Finished difference Result 42944 states and 73988 transitions. [2022-07-22 17:31:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:39,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-07-22 17:31:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:40,050 INFO L225 Difference]: With dead ends: 42944 [2022-07-22 17:31:40,051 INFO L226 Difference]: Without dead ends: 28998 [2022-07-22 17:31:40,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:40,094 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 1032 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:40,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1241 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:31:40,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28998 states. [2022-07-22 17:31:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28998 to 28834. [2022-07-22 17:31:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28834 states, 24011 states have (on average 1.5977260422306443) internal successors, (38363), 24016 states have internal predecessors, (38363), 4802 states have call successors, (4802), 16 states have call predecessors, (4802), 20 states have return successors, (5415), 4801 states have call predecessors, (5415), 4801 states have call successors, (5415) [2022-07-22 17:31:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28834 states to 28834 states and 48580 transitions. [2022-07-22 17:31:42,008 INFO L78 Accepts]: Start accepts. Automaton has 28834 states and 48580 transitions. Word has length 113 [2022-07-22 17:31:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:42,009 INFO L495 AbstractCegarLoop]: Abstraction has 28834 states and 48580 transitions. [2022-07-22 17:31:42,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 28834 states and 48580 transitions. [2022-07-22 17:31:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:31:42,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:42,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:42,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:31:42,026 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1928279346, now seen corresponding path program 1 times [2022-07-22 17:31:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:42,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679894441] [2022-07-22 17:31:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:31:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:31:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:31:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:31:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:31:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679894441] [2022-07-22 17:31:42,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679894441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:42,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:42,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119937015] [2022-07-22 17:31:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:42,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:42,116 INFO L87 Difference]: Start difference. First operand 28834 states and 48580 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:44,921 INFO L93 Difference]: Finished difference Result 78706 states and 134747 transitions. [2022-07-22 17:31:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:44,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-07-22 17:31:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:45,154 INFO L225 Difference]: With dead ends: 78706 [2022-07-22 17:31:45,154 INFO L226 Difference]: Without dead ends: 52877 [2022-07-22 17:31:45,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:45,224 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 1038 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:45,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1240 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:31:45,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52877 states. [2022-07-22 17:31:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52877 to 52713. [2022-07-22 17:31:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52713 states, 44175 states have (on average 1.5921222410865874) internal successors, (70332), 44180 states have internal predecessors, (70332), 8517 states have call successors, (8517), 16 states have call predecessors, (8517), 20 states have return successors, (9662), 8516 states have call predecessors, (9662), 8516 states have call successors, (9662) [2022-07-22 17:31:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52713 states to 52713 states and 88511 transitions. [2022-07-22 17:31:48,208 INFO L78 Accepts]: Start accepts. Automaton has 52713 states and 88511 transitions. Word has length 114 [2022-07-22 17:31:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:48,209 INFO L495 AbstractCegarLoop]: Abstraction has 52713 states and 88511 transitions. [2022-07-22 17:31:48,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:48,211 INFO L276 IsEmpty]: Start isEmpty. Operand 52713 states and 88511 transitions. [2022-07-22 17:31:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 17:31:48,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:48,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:48,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:31:48,237 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:48,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:48,238 INFO L85 PathProgramCache]: Analyzing trace with hash 329987790, now seen corresponding path program 1 times [2022-07-22 17:31:48,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:48,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759723927] [2022-07-22 17:31:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:48,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:31:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:31:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:31:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:31:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:31:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:48,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759723927] [2022-07-22 17:31:48,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759723927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:48,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:48,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:31:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79662960] [2022-07-22 17:31:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:31:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:31:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:31:48,352 INFO L87 Difference]: Start difference. First operand 52713 states and 88511 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:31:52,269 INFO L93 Difference]: Finished difference Result 98477 states and 168934 transitions. [2022-07-22 17:31:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:31:52,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-07-22 17:31:52,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:31:52,722 INFO L225 Difference]: With dead ends: 98477 [2022-07-22 17:31:52,722 INFO L226 Difference]: Without dead ends: 98336 [2022-07-22 17:31:52,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-22 17:31:52,768 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 1034 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:31:52,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1235 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:31:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98336 states. [2022-07-22 17:31:56,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98336 to 98172. [2022-07-22 17:31:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98172 states, 82835 states have (on average 1.585102915434297) internal successors, (131302), 82840 states have internal predecessors, (131302), 15316 states have call successors, (15316), 16 states have call predecessors, (15316), 20 states have return successors, (17507), 15315 states have call predecessors, (17507), 15315 states have call successors, (17507) [2022-07-22 17:31:57,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98172 states to 98172 states and 164125 transitions. [2022-07-22 17:31:57,284 INFO L78 Accepts]: Start accepts. Automaton has 98172 states and 164125 transitions. Word has length 115 [2022-07-22 17:31:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:31:57,284 INFO L495 AbstractCegarLoop]: Abstraction has 98172 states and 164125 transitions. [2022-07-22 17:31:57,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 17:31:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 98172 states and 164125 transitions. [2022-07-22 17:31:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 17:31:57,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:31:57,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:31:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:31:57,305 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:31:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:31:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash -737519213, now seen corresponding path program 1 times [2022-07-22 17:31:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:31:57,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951820240] [2022-07-22 17:31:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:31:57,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:31:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:31:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:31:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:31:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:31:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:31:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:31:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:31:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:31:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:31:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:31:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:31:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:31:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:31:57,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:31:57,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951820240] [2022-07-22 17:31:57,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951820240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:31:57,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:31:57,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:31:57,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388187779] [2022-07-22 17:31:57,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:31:57,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:31:57,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:31:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:31:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:31:57,418 INFO L87 Difference]: Start difference. First operand 98172 states and 164125 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 17:32:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:32:01,641 INFO L93 Difference]: Finished difference Result 98326 states and 167632 transitions. [2022-07-22 17:32:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:32:01,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 116 [2022-07-22 17:32:01,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:32:01,643 INFO L225 Difference]: With dead ends: 98326 [2022-07-22 17:32:01,643 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 17:32:01,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-07-22 17:32:01,781 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1022 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:32:01,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1513 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:32:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 17:32:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 17:32:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:32:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 17:32:01,794 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-07-22 17:32:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:32:01,795 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 17:32:01,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 17:32:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 17:32:01,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 17:32:01,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 17:32:01,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:32:01,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.