./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_spec9_product22.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 0fc665e3899dd29ca5bf696fac98a46e2d1733c214ee43bc57c8fd7a101d2539 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:56:06,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:56:06,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:56:06,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:56:06,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:56:06,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:56:06,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:56:06,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:56:06,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:56:06,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:56:06,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:56:06,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:56:06,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:56:06,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:56:06,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:56:07,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:56:07,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:56:07,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:56:07,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:56:07,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:56:07,010 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:56:07,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:56:07,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:56:07,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:56:07,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:56:07,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:56:07,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:56:07,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:56:07,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:56:07,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:56:07,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:56:07,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:56:07,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:56:07,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:56:07,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:56:07,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:56:07,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:56:07,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:56:07,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:56:07,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:56:07,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:56:07,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:56:07,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:56:07,050 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:56:07,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:56:07,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:56:07,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:56:07,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:56:07,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:56:07,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:56:07,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:56:07,052 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:56:07,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:56:07,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:56:07,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:56:07,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:56:07,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:56:07,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:56:07,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:56:07,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:56:07,054 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:56:07,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:56:07,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:56:07,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:56:07,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:56:07,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:56:07,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:56:07,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:56:07,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:56:07,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:56:07,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:56:07,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:56:07,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:56:07,056 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:56:07,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:56:07,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:56:07,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fc665e3899dd29ca5bf696fac98a46e2d1733c214ee43bc57c8fd7a101d2539 [2022-07-13 17:56:07,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:56:07,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:56:07,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:56:07,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:56:07,243 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:56:07,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec9_product22.cil.c [2022-07-13 17:56:07,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7382611e6/6c8702dd6ff84cfa9483dd062a0b9df2/FLAGd01aded36 [2022-07-13 17:56:07,752 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:56:07,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec9_product22.cil.c [2022-07-13 17:56:07,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7382611e6/6c8702dd6ff84cfa9483dd062a0b9df2/FLAGd01aded36 [2022-07-13 17:56:07,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7382611e6/6c8702dd6ff84cfa9483dd062a0b9df2 [2022-07-13 17:56:07,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:56:07,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:56:07,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:56:07,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:56:07,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:56:07,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:56:07" (1/1) ... [2022-07-13 17:56:07,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff43c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:07, skipping insertion in model container [2022-07-13 17:56:07,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:56:07" (1/1) ... [2022-07-13 17:56:07,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:56:07,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:56:08,270 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_spec9_product22.cil.c[51984,51997] [2022-07-13 17:56:08,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:56:08,331 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:56:08,440 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_spec9_product22.cil.c[51984,51997] [2022-07-13 17:56:08,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:56:08,517 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:56:08,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08 WrapperNode [2022-07-13 17:56:08,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:56:08,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:56:08,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:56:08,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:56:08,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,617 INFO L137 Inliner]: procedures = 129, calls = 211, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1031 [2022-07-13 17:56:08,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:56:08,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:56:08,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:56:08,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:56:08,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:56:08,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:56:08,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:56:08,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:56:08,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (1/1) ... [2022-07-13 17:56:08,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:56:08,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:56:08,737 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) [2022-07-13 17:56:08,763 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 [2022-07-13 17:56:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-13 17:56:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-13 17:56:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-13 17:56:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-13 17:56:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-13 17:56:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-13 17:56:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-13 17:56:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-13 17:56:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-13 17:56:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-13 17:56:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-13 17:56:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-13 17:56:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-13 17:56:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-13 17:56:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-13 17:56:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-13 17:56:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-13 17:56:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-07-13 17:56:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-07-13 17:56:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-13 17:56:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-13 17:56:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:56:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-13 17:56:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-13 17:56:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-13 17:56:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-13 17:56:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-13 17:56:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-13 17:56:08,779 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-13 17:56:08,779 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-13 17:56:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-13 17:56:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-13 17:56:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-13 17:56:08,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-13 17:56:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-13 17:56:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-13 17:56:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:56:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-13 17:56:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-13 17:56:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:56:08,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:56:08,915 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:56:08,916 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:56:09,385 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:56:09,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:56:09,394 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:56:09,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:56:09 BoogieIcfgContainer [2022-07-13 17:56:09,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:56:09,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:56:09,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:56:09,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:56:09,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:56:07" (1/3) ... [2022-07-13 17:56:09,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0bdee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:56:09, skipping insertion in model container [2022-07-13 17:56:09,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:56:08" (2/3) ... [2022-07-13 17:56:09,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0bdee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:56:09, skipping insertion in model container [2022-07-13 17:56:09,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:56:09" (3/3) ... [2022-07-13 17:56:09,401 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product22.cil.c [2022-07-13 17:56:09,409 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:56:09,410 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:56:09,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:56:09,463 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@7a52b26e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2fededbd [2022-07-13 17:56:09,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:56:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 252 states have (on average 1.5277777777777777) internal successors, (385), 256 states have internal predecessors, (385), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-13 17:56:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 17:56:09,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:09,484 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, 1, 1] [2022-07-13 17:56:09,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:09,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:09,488 INFO L85 PathProgramCache]: Analyzing trace with hash -113168014, now seen corresponding path program 1 times [2022-07-13 17:56:09,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:09,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189127706] [2022-07-13 17:56:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:09,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:56:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:56:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:56:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:56:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:56:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:56:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:56:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:56:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:56:09,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:09,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189127706] [2022-07-13 17:56:09,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189127706] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:56:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618314862] [2022-07-13 17:56:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:09,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:56:09,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:56:09,894 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) [2022-07-13 17:56:09,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:56:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:56:10,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:56:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:56:10,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:56:10,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618314862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:10,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:56:10,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-13 17:56:10,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643642040] [2022-07-13 17:56:10,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:10,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:56:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:56:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:56:10,205 INFO L87 Difference]: Start difference. First operand has 322 states, 252 states have (on average 1.5277777777777777) internal successors, (385), 256 states have internal predecessors, (385), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2022-07-13 17:56:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:10,238 INFO L93 Difference]: Finished difference Result 485 states and 716 transitions. [2022-07-13 17:56:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:56:10,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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 89 [2022-07-13 17:56:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:10,251 INFO L225 Difference]: With dead ends: 485 [2022-07-13 17:56:10,251 INFO L226 Difference]: Without dead ends: 315 [2022-07-13 17:56:10,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:56:10,261 INFO L413 NwaCegarLoop]: 481 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, 481 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 [2022-07-13 17:56:10,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:56:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-13 17:56:10,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-07-13 17:56:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 246 states have (on average 1.5203252032520325) internal successors, (374), 249 states have internal predecessors, (374), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-13 17:56:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2022-07-13 17:56:10,340 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 89 [2022-07-13 17:56:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:10,341 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2022-07-13 17:56:10,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2022-07-13 17:56:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2022-07-13 17:56:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 17:56:10,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:10,345 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, 1, 1, 1] [2022-07-13 17:56:10,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:56:10,552 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 [2022-07-13 17:56:10,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:10,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1652077357, now seen corresponding path program 1 times [2022-07-13 17:56:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:10,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732962060] [2022-07-13 17:56:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:10,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:56:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:56:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:56:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:56:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:56:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:56:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:56:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:56:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:56:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:10,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732962060] [2022-07-13 17:56:10,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732962060] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:56:10,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990798777] [2022-07-13 17:56:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:10,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:56:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:56:10,768 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) [2022-07-13 17:56:10,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:56:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:10,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:56:10,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:56:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:56:10,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:56:10,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990798777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:10,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:56:10,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:56:10,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879644337] [2022-07-13 17:56:10,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:10,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:56:10,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:56:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:56:10,990 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-07-13 17:56:11,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:11,016 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2022-07-13 17:56:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:56:11,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 90 [2022-07-13 17:56:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:11,019 INFO L225 Difference]: With dead ends: 475 [2022-07-13 17:56:11,019 INFO L226 Difference]: Without dead ends: 318 [2022-07-13 17:56:11,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:56:11,021 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 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 [2022-07-13 17:56:11,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:56:11,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-13 17:56:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2022-07-13 17:56:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 248 states have (on average 1.5161290322580645) internal successors, (376), 251 states have internal predecessors, (376), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-13 17:56:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 475 transitions. [2022-07-13 17:56:11,035 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 475 transitions. Word has length 90 [2022-07-13 17:56:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:11,035 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 475 transitions. [2022-07-13 17:56:11,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-07-13 17:56:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 475 transitions. [2022-07-13 17:56:11,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:56:11,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:11,069 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, 1, 1, 1, 1, 1] [2022-07-13 17:56:11,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:56:11,294 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 [2022-07-13 17:56:11,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash 551248029, now seen corresponding path program 1 times [2022-07-13 17:56:11,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:11,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40415667] [2022-07-13 17:56:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:11,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:56:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:56:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:56:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:56:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:56:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:56:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:56:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:56:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:56:11,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:11,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40415667] [2022-07-13 17:56:11,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40415667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:56:11,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674387646] [2022-07-13 17:56:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:11,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:56:11,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:56:11,415 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) [2022-07-13 17:56:11,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:56:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:56:11,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:56:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 17:56:11,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:56:11,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674387646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:11,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:56:11,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:56:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504484938] [2022-07-13 17:56:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:11,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:56:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:56:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:56:11,624 INFO L87 Difference]: Start difference. First operand 317 states and 475 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-07-13 17:56:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:11,647 INFO L93 Difference]: Finished difference Result 669 states and 1017 transitions. [2022-07-13 17:56:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:56:11,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 99 [2022-07-13 17:56:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:11,650 INFO L225 Difference]: With dead ends: 669 [2022-07-13 17:56:11,650 INFO L226 Difference]: Without dead ends: 379 [2022-07-13 17:56:11,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:56:11,652 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 115 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 919 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 [2022-07-13 17:56:11,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 919 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:56:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-13 17:56:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 371. [2022-07-13 17:56:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 291 states have (on average 1.5326460481099657) internal successors, (446), 294 states have internal predecessors, (446), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-07-13 17:56:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 567 transitions. [2022-07-13 17:56:11,667 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 567 transitions. Word has length 99 [2022-07-13 17:56:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:11,668 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 567 transitions. [2022-07-13 17:56:11,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-07-13 17:56:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 567 transitions. [2022-07-13 17:56:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:56:11,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:11,670 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, 1, 1, 1, 1, 1, 1] [2022-07-13 17:56:11,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 17:56:11,893 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 [2022-07-13 17:56:11,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:11,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1983768480, now seen corresponding path program 1 times [2022-07-13 17:56:11,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:11,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760753808] [2022-07-13 17:56:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 17:56:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:56:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:56:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:56:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:56:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:56:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:56:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:56:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:56:12,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:12,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760753808] [2022-07-13 17:56:12,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760753808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:56:12,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421887078] [2022-07-13 17:56:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:12,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:56:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:56:12,017 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) [2022-07-13 17:56:12,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:56:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:56:12,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:56:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:56:12,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:56:12,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421887078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:12,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:56:12,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-13 17:56:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683353317] [2022-07-13 17:56:12,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:12,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:56:12,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:56:12,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:56:12,286 INFO L87 Difference]: Start difference. First operand 371 states and 567 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-13 17:56:12,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:12,338 INFO L93 Difference]: Finished difference Result 733 states and 1124 transitions. [2022-07-13 17:56:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:56:12,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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 100 [2022-07-13 17:56:12,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:12,341 INFO L225 Difference]: With dead ends: 733 [2022-07-13 17:56:12,341 INFO L226 Difference]: Without dead ends: 373 [2022-07-13 17:56:12,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:56:12,344 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 133 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1703 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 [2022-07-13 17:56:12,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1703 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:56:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-13 17:56:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2022-07-13 17:56:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 292 states have (on average 1.5308219178082192) internal successors, (447), 296 states have internal predecessors, (447), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2022-07-13 17:56:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 570 transitions. [2022-07-13 17:56:12,385 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 570 transitions. Word has length 100 [2022-07-13 17:56:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:12,386 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 570 transitions. [2022-07-13 17:56:12,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-13 17:56:12,386 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 570 transitions. [2022-07-13 17:56:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 17:56:12,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:12,388 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, 1, 1, 1, 1, 1, 1] [2022-07-13 17:56:12,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:56:12,607 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 [2022-07-13 17:56:12,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2002113072, now seen corresponding path program 1 times [2022-07-13 17:56:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:12,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007791371] [2022-07-13 17:56:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:56:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:56:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:56:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:56:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:56:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:56:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:56:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:56:12,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:12,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007791371] [2022-07-13 17:56:12,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007791371] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:56:12,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191550207] [2022-07-13 17:56:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:12,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:56:12,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:56:12,729 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) [2022-07-13 17:56:12,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:56:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:12,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:56:12,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:56:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:56:12,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:56:12,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191550207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:12,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:56:12,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-13 17:56:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182464200] [2022-07-13 17:56:12,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:56:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:56:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:56:12,979 INFO L87 Difference]: Start difference. First operand 373 states and 570 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2022-07-13 17:56:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:13,035 INFO L93 Difference]: Finished difference Result 735 states and 1129 transitions. [2022-07-13 17:56:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:56:13,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 101 [2022-07-13 17:56:13,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:13,037 INFO L225 Difference]: With dead ends: 735 [2022-07-13 17:56:13,037 INFO L226 Difference]: Without dead ends: 375 [2022-07-13 17:56:13,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:56:13,039 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 132 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1692 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 [2022-07-13 17:56:13,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1692 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:56:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-07-13 17:56:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2022-07-13 17:56:13,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.52901023890785) internal successors, (448), 298 states have internal predecessors, (448), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2022-07-13 17:56:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2022-07-13 17:56:13,082 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 101 [2022-07-13 17:56:13,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:13,083 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2022-07-13 17:56:13,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2022-07-13 17:56:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2022-07-13 17:56:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:56:13,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:13,086 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, 1, 1] [2022-07-13 17:56:13,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:56:13,303 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 [2022-07-13 17:56:13,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:13,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1617125696, now seen corresponding path program 1 times [2022-07-13 17:56:13,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:13,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818879456] [2022-07-13 17:56:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:56:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:56:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:56:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:56:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:56:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:56:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:56:13,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:13,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818879456] [2022-07-13 17:56:13,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818879456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:13,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:13,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:56:13,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811542516] [2022-07-13 17:56:13,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:13,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:56:13,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:13,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:56:13,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:56:13,416 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-13 17:56:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:14,877 INFO L93 Difference]: Finished difference Result 901 states and 1392 transitions. [2022-07-13 17:56:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:56:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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 102 [2022-07-13 17:56:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:14,881 INFO L225 Difference]: With dead ends: 901 [2022-07-13 17:56:14,882 INFO L226 Difference]: Without dead ends: 549 [2022-07-13 17:56:14,883 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 [2022-07-13 17:56:14,883 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 1121 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 2550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:14,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1459 Invalid, 2550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 17:56:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-07-13 17:56:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 375. [2022-07-13 17:56:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.52901023890785) internal successors, (448), 298 states have internal predecessors, (448), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2022-07-13 17:56:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2022-07-13 17:56:14,906 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 102 [2022-07-13 17:56:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:14,907 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2022-07-13 17:56:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-13 17:56:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2022-07-13 17:56:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 17:56:14,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:14,909 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, 1, 1, 1, 1] [2022-07-13 17:56:14,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:56:14,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash 970357938, now seen corresponding path program 2 times [2022-07-13 17:56:14,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:14,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892252470] [2022-07-13 17:56:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:14,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:56:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:56:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:56:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:56:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:56:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:56:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:56:14,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:14,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892252470] [2022-07-13 17:56:14,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892252470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:14,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:14,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:56:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330566350] [2022-07-13 17:56:14,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:14,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:56:14,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:14,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:56:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:56:14,988 INFO L87 Difference]: Start difference. First operand 375 states and 575 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-13 17:56:16,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:16,302 INFO L93 Difference]: Finished difference Result 903 states and 1395 transitions. [2022-07-13 17:56:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:56:16,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 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 103 [2022-07-13 17:56:16,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:16,309 INFO L225 Difference]: With dead ends: 903 [2022-07-13 17:56:16,309 INFO L226 Difference]: Without dead ends: 551 [2022-07-13 17:56:16,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:56:16,312 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1116 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:16,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1460 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 17:56:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-07-13 17:56:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2022-07-13 17:56:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-07-13 17:56:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 578 transitions. [2022-07-13 17:56:16,347 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 578 transitions. Word has length 103 [2022-07-13 17:56:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:16,347 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 578 transitions. [2022-07-13 17:56:16,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-13 17:56:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 578 transitions. [2022-07-13 17:56:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 17:56:16,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:16,349 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, 1, 1, 1, 1] [2022-07-13 17:56:16,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:56:16,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash 769278873, now seen corresponding path program 1 times [2022-07-13 17:56:16,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:16,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058510165] [2022-07-13 17:56:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:16,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:56:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:56:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:56:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:56:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:56:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 17:56:16,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:16,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058510165] [2022-07-13 17:56:16,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058510165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:16,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:16,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:56:16,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685393743] [2022-07-13 17:56:16,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:16,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:56:16,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:56:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:56:16,462 INFO L87 Difference]: Start difference. First operand 377 states and 578 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-13 17:56:17,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:17,764 INFO L93 Difference]: Finished difference Result 903 states and 1394 transitions. [2022-07-13 17:56:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:56:17,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 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 104 [2022-07-13 17:56:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:17,770 INFO L225 Difference]: With dead ends: 903 [2022-07-13 17:56:17,770 INFO L226 Difference]: Without dead ends: 551 [2022-07-13 17:56:17,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:56:17,772 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 1119 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:17,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1459 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 17:56:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-07-13 17:56:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2022-07-13 17:56:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-07-13 17:56:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 578 transitions. [2022-07-13 17:56:17,794 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 578 transitions. Word has length 104 [2022-07-13 17:56:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:17,795 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 578 transitions. [2022-07-13 17:56:17,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-13 17:56:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 578 transitions. [2022-07-13 17:56:17,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 17:56:17,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:17,796 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, 1, 1, 1, 1] [2022-07-13 17:56:17,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:56:17,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:17,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:17,797 INFO L85 PathProgramCache]: Analyzing trace with hash -184661285, now seen corresponding path program 1 times [2022-07-13 17:56:17,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:17,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206422616] [2022-07-13 17:56:17,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:17,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:56:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:56:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:56:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:56:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:56:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:56:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:17,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206422616] [2022-07-13 17:56:17,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206422616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:17,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:17,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:56:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048413623] [2022-07-13 17:56:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:17,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:56:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:56:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:56:17,925 INFO L87 Difference]: Start difference. First operand 377 states and 578 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 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) [2022-07-13 17:56:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:19,731 INFO L93 Difference]: Finished difference Result 901 states and 1389 transitions. [2022-07-13 17:56:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:56:19,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 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 104 [2022-07-13 17:56:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:19,734 INFO L225 Difference]: With dead ends: 901 [2022-07-13 17:56:19,735 INFO L226 Difference]: Without dead ends: 551 [2022-07-13 17:56:19,736 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 [2022-07-13 17:56:19,738 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1236 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 4251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:19,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 1772 Invalid, 4251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 3762 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 17:56:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-07-13 17:56:19,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2022-07-13 17:56:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2022-07-13 17:56:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 577 transitions. [2022-07-13 17:56:19,758 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 577 transitions. Word has length 104 [2022-07-13 17:56:19,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:19,759 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 577 transitions. [2022-07-13 17:56:19,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 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) [2022-07-13 17:56:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 577 transitions. [2022-07-13 17:56:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:56:19,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:19,761 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, 1, 1, 1, 1, 1, 1] [2022-07-13 17:56:19,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:56:19,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:19,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:19,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1450940197, now seen corresponding path program 2 times [2022-07-13 17:56:19,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:19,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369904308] [2022-07-13 17:56:19,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:19,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:56:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:56:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:56:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:56:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:56:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:56:19,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:19,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369904308] [2022-07-13 17:56:19,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369904308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:19,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:19,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:56:19,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345340078] [2022-07-13 17:56:19,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:19,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:56:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:56:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:56:19,876 INFO L87 Difference]: Start difference. First operand 377 states and 577 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 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) [2022-07-13 17:56:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:21,778 INFO L93 Difference]: Finished difference Result 903 states and 1395 transitions. [2022-07-13 17:56:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:56:21,779 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 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 105 [2022-07-13 17:56:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:21,782 INFO L225 Difference]: With dead ends: 903 [2022-07-13 17:56:21,782 INFO L226 Difference]: Without dead ends: 553 [2022-07-13 17:56:21,784 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 [2022-07-13 17:56:21,784 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1231 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3795 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 3795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:21,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1773 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 3795 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 17:56:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-13 17:56:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 379. [2022-07-13 17:56:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 295 states have (on average 1.5254237288135593) internal successors, (450), 302 states have internal predecessors, (450), 61 states have call successors, (61), 18 states have call predecessors, (61), 22 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2022-07-13 17:56:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 583 transitions. [2022-07-13 17:56:21,804 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 583 transitions. Word has length 105 [2022-07-13 17:56:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:21,805 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 583 transitions. [2022-07-13 17:56:21,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 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) [2022-07-13 17:56:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 583 transitions. [2022-07-13 17:56:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 17:56:21,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:21,807 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, 1, 1, 1, 1, 1, 1] [2022-07-13 17:56:21,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 17:56:21,807 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:21,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1794783478, now seen corresponding path program 1 times [2022-07-13 17:56:21,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:21,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877043044] [2022-07-13 17:56:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:21,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:56:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:56:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:56:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:56:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:56:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 17:56:21,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:21,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877043044] [2022-07-13 17:56:21,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877043044] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:56:21,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096767649] [2022-07-13 17:56:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:21,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:56:21,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:56:21,936 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) [2022-07-13 17:56:21,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:56:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:22,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:56:22,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:56:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:22,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 17:56:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:22,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096767649] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 17:56:22,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 17:56:22,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-13 17:56:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546028013] [2022-07-13 17:56:22,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 17:56:22,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 17:56:22,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 17:56:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:56:22,236 INFO L87 Difference]: Start difference. First operand 379 states and 583 transitions. Second operand has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 17:56:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:25,272 INFO L93 Difference]: Finished difference Result 1632 states and 2703 transitions. [2022-07-13 17:56:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 17:56:25,273 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 106 [2022-07-13 17:56:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:25,279 INFO L225 Difference]: With dead ends: 1632 [2022-07-13 17:56:25,279 INFO L226 Difference]: Without dead ends: 1284 [2022-07-13 17:56:25,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-13 17:56:25,282 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 3371 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 5094 mSolverCounterSat, 1306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3373 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 6400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1306 IncrementalHoareTripleChecker+Valid, 5094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:25,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3373 Valid, 3528 Invalid, 6400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1306 Valid, 5094 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 17:56:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-07-13 17:56:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 732. [2022-07-13 17:56:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 584 states have (on average 1.577054794520548) internal successors, (921), 591 states have internal predecessors, (921), 125 states have call successors, (125), 18 states have call predecessors, (125), 22 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2022-07-13 17:56:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1192 transitions. [2022-07-13 17:56:25,325 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1192 transitions. Word has length 106 [2022-07-13 17:56:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:25,325 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 1192 transitions. [2022-07-13 17:56:25,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 17:56:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1192 transitions. [2022-07-13 17:56:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 17:56:25,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:25,328 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] [2022-07-13 17:56:25,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 17:56:25,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:56:25,545 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:25,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:25,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1263050880, now seen corresponding path program 1 times [2022-07-13 17:56:25,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:25,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076563954] [2022-07-13 17:56:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:25,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:56:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:56:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:56:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:56:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:56:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:25,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076563954] [2022-07-13 17:56:25,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076563954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:25,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:25,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:25,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309675130] [2022-07-13 17:56:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:25,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:25,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:25,606 INFO L87 Difference]: Start difference. First operand 732 states and 1192 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) [2022-07-13 17:56:26,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:26,768 INFO L93 Difference]: Finished difference Result 1893 states and 3146 transitions. [2022-07-13 17:56:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:26,769 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 [2022-07-13 17:56:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:26,774 INFO L225 Difference]: With dead ends: 1893 [2022-07-13 17:56:26,774 INFO L226 Difference]: Without dead ends: 1239 [2022-07-13 17:56:26,776 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 [2022-07-13 17:56:26,777 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1111 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:26,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1304 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:56:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-07-13 17:56:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1057. [2022-07-13 17:56:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 845 states have (on average 1.5928994082840238) internal successors, (1346), 852 states have internal predecessors, (1346), 189 states have call successors, (189), 18 states have call predecessors, (189), 22 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2022-07-13 17:56:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1755 transitions. [2022-07-13 17:56:26,829 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1755 transitions. Word has length 109 [2022-07-13 17:56:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:26,830 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1755 transitions. [2022-07-13 17:56:26,830 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) [2022-07-13 17:56:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1755 transitions. [2022-07-13 17:56:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 17:56:26,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:26,833 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] [2022-07-13 17:56:26,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:56:26,833 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1528064206, now seen corresponding path program 1 times [2022-07-13 17:56:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:26,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588020902] [2022-07-13 17:56:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:56:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:56:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:56:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:56:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:56:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:26,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:26,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588020902] [2022-07-13 17:56:26,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588020902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:26,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:26,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:26,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874822480] [2022-07-13 17:56:26,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:26,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:26,890 INFO L87 Difference]: Start difference. First operand 1057 states and 1755 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) [2022-07-13 17:56:28,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:28,054 INFO L93 Difference]: Finished difference Result 2698 states and 4530 transitions. [2022-07-13 17:56:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:28,055 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 [2022-07-13 17:56:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:28,063 INFO L225 Difference]: With dead ends: 2698 [2022-07-13 17:56:28,063 INFO L226 Difference]: Without dead ends: 1772 [2022-07-13 17:56:28,066 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 [2022-07-13 17:56:28,067 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1109 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:28,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 1323 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:56:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2022-07-13 17:56:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1590. [2022-07-13 17:56:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1283 states have (on average 1.5993764614185502) internal successors, (2052), 1290 states have internal predecessors, (2052), 284 states have call successors, (284), 18 states have call predecessors, (284), 22 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2022-07-13 17:56:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2651 transitions. [2022-07-13 17:56:28,176 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2651 transitions. Word has length 110 [2022-07-13 17:56:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:28,176 INFO L495 AbstractCegarLoop]: Abstraction has 1590 states and 2651 transitions. [2022-07-13 17:56:28,176 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) [2022-07-13 17:56:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2651 transitions. [2022-07-13 17:56:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 17:56:28,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:28,181 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] [2022-07-13 17:56:28,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:56:28,181 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:28,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:28,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1955880974, now seen corresponding path program 1 times [2022-07-13 17:56:28,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:28,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036048512] [2022-07-13 17:56:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:28,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:56:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:56:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:56:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:56:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:56:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:28,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:28,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036048512] [2022-07-13 17:56:28,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036048512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:28,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:28,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118233148] [2022-07-13 17:56:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:28,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:28,244 INFO L87 Difference]: Start difference. First operand 1590 states and 2651 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) [2022-07-13 17:56:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:29,440 INFO L93 Difference]: Finished difference Result 3905 states and 6616 transitions. [2022-07-13 17:56:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:29,440 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 [2022-07-13 17:56:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:29,450 INFO L225 Difference]: With dead ends: 3905 [2022-07-13 17:56:29,450 INFO L226 Difference]: Without dead ends: 2581 [2022-07-13 17:56:29,454 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 [2022-07-13 17:56:29,454 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1107 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:29,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1291 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:56:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2022-07-13 17:56:29,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2399. [2022-07-13 17:56:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1969 states have (on average 1.6043676993397664) internal successors, (3159), 1976 states have internal predecessors, (3159), 407 states have call successors, (407), 18 states have call predecessors, (407), 22 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2022-07-13 17:56:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 4020 transitions. [2022-07-13 17:56:29,557 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 4020 transitions. Word has length 111 [2022-07-13 17:56:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:29,557 INFO L495 AbstractCegarLoop]: Abstraction has 2399 states and 4020 transitions. [2022-07-13 17:56:29,557 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) [2022-07-13 17:56:29,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 4020 transitions. [2022-07-13 17:56:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 17:56:29,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:29,562 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] [2022-07-13 17:56:29,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:56:29,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:29,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1874116179, now seen corresponding path program 1 times [2022-07-13 17:56:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:29,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033536033] [2022-07-13 17:56:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:29,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:56:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:56:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:56:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:56:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:56:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:29,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033536033] [2022-07-13 17:56:29,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033536033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:29,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:29,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481764840] [2022-07-13 17:56:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:29,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:29,678 INFO L87 Difference]: Start difference. First operand 2399 states and 4020 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) [2022-07-13 17:56:30,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:30,868 INFO L93 Difference]: Finished difference Result 5789 states and 9876 transitions. [2022-07-13 17:56:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:30,868 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 [2022-07-13 17:56:30,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:30,882 INFO L225 Difference]: With dead ends: 5789 [2022-07-13 17:56:30,882 INFO L226 Difference]: Without dead ends: 3875 [2022-07-13 17:56:30,888 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 [2022-07-13 17:56:30,888 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 1105 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:30,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1289 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:56:30,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2022-07-13 17:56:31,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3693. [2022-07-13 17:56:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3084 states have (on average 1.6073281452658885) internal successors, (4957), 3091 states have internal predecessors, (4957), 586 states have call successors, (586), 18 states have call predecessors, (586), 22 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2022-07-13 17:56:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 6202 transitions. [2022-07-13 17:56:31,052 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 6202 transitions. Word has length 112 [2022-07-13 17:56:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:31,053 INFO L495 AbstractCegarLoop]: Abstraction has 3693 states and 6202 transitions. [2022-07-13 17:56:31,053 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) [2022-07-13 17:56:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 6202 transitions. [2022-07-13 17:56:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:56:31,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:31,059 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] [2022-07-13 17:56:31,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:56:31,059 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:31,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1724768054, now seen corresponding path program 1 times [2022-07-13 17:56:31,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:31,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605919052] [2022-07-13 17:56:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:31,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:56:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:56:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:56:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:56:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:56:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:31,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:31,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605919052] [2022-07-13 17:56:31,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605919052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:31,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:31,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224875468] [2022-07-13 17:56:31,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:31,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:31,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:31,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:31,154 INFO L87 Difference]: Start difference. First operand 3693 states and 6202 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) [2022-07-13 17:56:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:32,449 INFO L93 Difference]: Finished difference Result 8892 states and 15240 transitions. [2022-07-13 17:56:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:32,450 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 [2022-07-13 17:56:32,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:32,474 INFO L225 Difference]: With dead ends: 8892 [2022-07-13 17:56:32,475 INFO L226 Difference]: Without dead ends: 6016 [2022-07-13 17:56:32,483 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 [2022-07-13 17:56:32,483 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1103 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:32,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1322 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:56:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2022-07-13 17:56:32,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 5834. [2022-07-13 17:56:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 4849 states have (on average 1.6009486492060219) internal successors, (7763), 4856 states have internal predecessors, (7763), 962 states have call successors, (962), 18 states have call predecessors, (962), 22 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2022-07-13 17:56:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 9804 transitions. [2022-07-13 17:56:32,804 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 9804 transitions. Word has length 113 [2022-07-13 17:56:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:32,804 INFO L495 AbstractCegarLoop]: Abstraction has 5834 states and 9804 transitions. [2022-07-13 17:56:32,805 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) [2022-07-13 17:56:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 9804 transitions. [2022-07-13 17:56:32,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 17:56:32,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:32,812 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] [2022-07-13 17:56:32,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:56:32,813 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -824073833, now seen corresponding path program 1 times [2022-07-13 17:56:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:32,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963560852] [2022-07-13 17:56:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:56:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:56:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:56:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:56:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 17:56:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:32,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963560852] [2022-07-13 17:56:32,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963560852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:32,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:32,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:32,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156941370] [2022-07-13 17:56:32,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:32,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:32,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:32,873 INFO L87 Difference]: Start difference. First operand 5834 states and 9804 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) [2022-07-13 17:56:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:34,261 INFO L93 Difference]: Finished difference Result 14509 states and 24853 transitions. [2022-07-13 17:56:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:34,262 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 [2022-07-13 17:56:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:34,295 INFO L225 Difference]: With dead ends: 14509 [2022-07-13 17:56:34,295 INFO L226 Difference]: Without dead ends: 9894 [2022-07-13 17:56:34,307 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 [2022-07-13 17:56:34,308 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1101 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:34,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1329 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:56:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9894 states. [2022-07-13 17:56:34,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9894 to 9712. [2022-07-13 17:56:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 8121 states have (on average 1.5985716044822067) internal successors, (12982), 8128 states have internal predecessors, (12982), 1568 states have call successors, (1568), 18 states have call predecessors, (1568), 22 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2022-07-13 17:56:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 16313 transitions. [2022-07-13 17:56:34,802 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 16313 transitions. Word has length 114 [2022-07-13 17:56:34,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:34,802 INFO L495 AbstractCegarLoop]: Abstraction has 9712 states and 16313 transitions. [2022-07-13 17:56:34,803 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) [2022-07-13 17:56:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 16313 transitions. [2022-07-13 17:56:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 17:56:34,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:34,811 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] [2022-07-13 17:56:34,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:56:34,812 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1453587128, now seen corresponding path program 1 times [2022-07-13 17:56:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:34,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236441525] [2022-07-13 17:56:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:34,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:56:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:56:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:56:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:56:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:56:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:34,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:34,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236441525] [2022-07-13 17:56:34,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236441525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:34,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:34,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:34,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651280583] [2022-07-13 17:56:34,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:34,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:34,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:34,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:34,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:34,872 INFO L87 Difference]: Start difference. First operand 9712 states and 16313 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) [2022-07-13 17:56:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:36,454 INFO L93 Difference]: Finished difference Result 25218 states and 43134 transitions. [2022-07-13 17:56:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:36,476 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 [2022-07-13 17:56:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:36,627 INFO L225 Difference]: With dead ends: 25218 [2022-07-13 17:56:36,627 INFO L226 Difference]: Without dead ends: 17207 [2022-07-13 17:56:36,661 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 [2022-07-13 17:56:36,662 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1099 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:36,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1333 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:56:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17207 states. [2022-07-13 17:56:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17207 to 17025. [2022-07-13 17:56:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17025 states, 14231 states have (on average 1.5900498910828473) internal successors, (22628), 14238 states have internal predecessors, (22628), 2771 states have call successors, (2771), 18 states have call predecessors, (2771), 22 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2022-07-13 17:56:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17025 states to 17025 states and 28509 transitions. [2022-07-13 17:56:37,703 INFO L78 Accepts]: Start accepts. Automaton has 17025 states and 28509 transitions. Word has length 115 [2022-07-13 17:56:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:37,704 INFO L495 AbstractCegarLoop]: Abstraction has 17025 states and 28509 transitions. [2022-07-13 17:56:37,704 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) [2022-07-13 17:56:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 17025 states and 28509 transitions. [2022-07-13 17:56:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 17:56:37,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:37,716 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] [2022-07-13 17:56:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:56:37,717 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1261291992, now seen corresponding path program 1 times [2022-07-13 17:56:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:37,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735707189] [2022-07-13 17:56:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:37,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:56:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:56:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:56:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:56:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:56:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:37,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:37,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735707189] [2022-07-13 17:56:37,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735707189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:37,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:37,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:37,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607948671] [2022-07-13 17:56:37,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:37,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:37,787 INFO L87 Difference]: Start difference. First operand 17025 states and 28509 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-07-13 17:56:40,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:40,168 INFO L93 Difference]: Finished difference Result 45194 states and 77147 transitions. [2022-07-13 17:56:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:40,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 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 116 [2022-07-13 17:56:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:40,262 INFO L225 Difference]: With dead ends: 45194 [2022-07-13 17:56:40,262 INFO L226 Difference]: Without dead ends: 30547 [2022-07-13 17:56:40,302 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 [2022-07-13 17:56:40,302 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1097 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:40,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1294 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 17:56:40,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30547 states. [2022-07-13 17:56:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30547 to 30365. [2022-07-13 17:56:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30365 states, 25532 states have (on average 1.585892213692621) internal successors, (40491), 25539 states have internal predecessors, (40491), 4810 states have call successors, (4810), 18 states have call predecessors, (4810), 22 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2022-07-13 17:56:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30365 states to 30365 states and 50724 transitions. [2022-07-13 17:56:42,115 INFO L78 Accepts]: Start accepts. Automaton has 30365 states and 50724 transitions. Word has length 116 [2022-07-13 17:56:42,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:42,116 INFO L495 AbstractCegarLoop]: Abstraction has 30365 states and 50724 transitions. [2022-07-13 17:56:42,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-07-13 17:56:42,116 INFO L276 IsEmpty]: Start isEmpty. Operand 30365 states and 50724 transitions. [2022-07-13 17:56:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 17:56:42,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:42,134 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, 1] [2022-07-13 17:56:42,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:56:42,135 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash -997302246, now seen corresponding path program 1 times [2022-07-13 17:56:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:42,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791485636] [2022-07-13 17:56:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:42,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:56:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:56:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:56:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:56:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:56:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:42,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791485636] [2022-07-13 17:56:42,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791485636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:42,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:42,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:42,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668502672] [2022-07-13 17:56:42,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:42,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:42,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:42,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:42,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:42,213 INFO L87 Difference]: Start difference. First operand 30365 states and 50724 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-13 17:56:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:45,600 INFO L93 Difference]: Finished difference Result 82931 states and 140671 transitions. [2022-07-13 17:56:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:45,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 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 117 [2022-07-13 17:56:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:45,814 INFO L225 Difference]: With dead ends: 82931 [2022-07-13 17:56:45,814 INFO L226 Difference]: Without dead ends: 55756 [2022-07-13 17:56:45,883 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 [2022-07-13 17:56:45,885 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1095 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:45,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1307 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:56:45,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55756 states. [2022-07-13 17:56:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55756 to 55574. [2022-07-13 17:56:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55574 states, 47026 states have (on average 1.5804448602900523) internal successors, (74322), 47033 states have internal predecessors, (74322), 8525 states have call successors, (8525), 18 states have call predecessors, (8525), 22 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2022-07-13 17:56:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55574 states to 55574 states and 92517 transitions. [2022-07-13 17:56:49,037 INFO L78 Accepts]: Start accepts. Automaton has 55574 states and 92517 transitions. Word has length 117 [2022-07-13 17:56:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:56:49,037 INFO L495 AbstractCegarLoop]: Abstraction has 55574 states and 92517 transitions. [2022-07-13 17:56:49,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-13 17:56:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 55574 states and 92517 transitions. [2022-07-13 17:56:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 17:56:49,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:56:49,052 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, 1, 1] [2022-07-13 17:56:49,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:56:49,053 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:56:49,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:56:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1497591688, now seen corresponding path program 1 times [2022-07-13 17:56:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:56:49,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161426539] [2022-07-13 17:56:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:56:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:56:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:56:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:56:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:56:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:56:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:56:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:56:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:56:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 17:56:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:56:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 17:56:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 17:56:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:56:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:56:49,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:56:49,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161426539] [2022-07-13 17:56:49,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161426539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:56:49,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:56:49,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:56:49,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371080585] [2022-07-13 17:56:49,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:56:49,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:56:49,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:56:49,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:56:49,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:56:49,120 INFO L87 Difference]: Start difference. First operand 55574 states and 92517 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-07-13 17:56:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:56:54,137 INFO L93 Difference]: Finished difference Result 103987 states and 176657 transitions. [2022-07-13 17:56:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:56:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 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 118 [2022-07-13 17:56:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:56:54,521 INFO L225 Difference]: With dead ends: 103987 [2022-07-13 17:56:54,521 INFO L226 Difference]: Without dead ends: 103830 [2022-07-13 17:56:54,577 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 [2022-07-13 17:56:54,578 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1093 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:56:54,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1294 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 17:56:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103830 states. [2022-07-13 17:56:59,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103830 to 103648. [2022-07-13 17:56:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103648 states, 88301 states have (on average 1.573628837725507) internal successors, (138953), 88308 states have internal predecessors, (138953), 15324 states have call successors, (15324), 18 states have call predecessors, (15324), 22 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2022-07-13 17:57:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103648 states to 103648 states and 171792 transitions. [2022-07-13 17:57:00,300 INFO L78 Accepts]: Start accepts. Automaton has 103648 states and 171792 transitions. Word has length 118 [2022-07-13 17:57:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:57:00,300 INFO L495 AbstractCegarLoop]: Abstraction has 103648 states and 171792 transitions. [2022-07-13 17:57:00,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-07-13 17:57:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 103648 states and 171792 transitions. [2022-07-13 17:57:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 17:57:00,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:57:00,317 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, 1, 1, 1] [2022-07-13 17:57:00,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 17:57:00,317 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:57:00,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:57:00,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1879456935, now seen corresponding path program 1 times [2022-07-13 17:57:00,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:57:00,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018913801] [2022-07-13 17:57:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:57:00,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:57:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:57:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:57:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 17:57:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:57:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:57:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:57:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:57:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:57:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:57:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 17:57:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:57:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:57:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 17:57:00,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:57:00,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018913801] [2022-07-13 17:57:00,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018913801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:57:00,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:57:00,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-13 17:57:00,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946775186] [2022-07-13 17:57:00,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:57:00,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 17:57:00,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:57:00,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 17:57:00,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:57:00,456 INFO L87 Difference]: Start difference. First operand 103648 states and 171792 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-13 17:57:16,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:57:16,836 INFO L93 Difference]: Finished difference Result 207764 states and 356274 transitions. [2022-07-13 17:57:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 17:57:16,837 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 119 [2022-07-13 17:57:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:57:17,956 INFO L225 Difference]: With dead ends: 207764 [2022-07-13 17:57:17,956 INFO L226 Difference]: Without dead ends: 207613 [2022-07-13 17:57:18,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2022-07-13 17:57:18,055 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 5478 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 10540 mSolverCounterSat, 3306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5478 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 13846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3306 IncrementalHoareTripleChecker+Valid, 10540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:57:18,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5478 Valid, 3225 Invalid, 13846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3306 Valid, 10540 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-13 17:57:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207613 states.