./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_spec11_product08.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 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:43:24,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:43:24,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:43:24,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:43:24,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:43:24,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:43:24,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:43:24,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:43:24,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:43:24,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:43:24,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:43:24,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:43:24,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:43:24,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:43:24,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:43:24,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:43:24,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:43:24,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:43:24,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:43:24,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:43:24,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:43:24,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:43:24,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:43:24,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:43:24,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:43:24,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:43:24,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:43:24,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:43:24,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:43:24,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:43:24,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:43:24,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:43:24,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:43:24,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:43:24,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:43:24,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:43:24,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:43:24,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:43:24,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:43:24,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:43:24,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:43:24,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:43:25,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:43:25,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:43:25,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:43:25,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:43:25,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:43:25,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:43:25,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:43:25,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:43:25,015 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:43:25,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:43:25,016 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:43:25,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:43:25,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:43:25,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:43:25,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:43:25,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:43:25,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:43:25,017 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:43:25,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:43:25,018 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:43:25,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:43:25,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:43:25,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:43:25,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:43:25,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:43:25,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:43:25,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:43:25,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:43:25,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:43:25,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:43:25,020 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:43:25,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:43:25,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:43:25,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e [2021-12-28 00:43:25,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:43:25,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:43:25,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:43:25,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:43:25,371 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:43:25,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2021-12-28 00:43:25,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2cadb86/43269560758447e1b097eead9bb24332/FLAG8a4228987 [2021-12-28 00:43:25,977 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:43:25,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2021-12-28 00:43:25,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2cadb86/43269560758447e1b097eead9bb24332/FLAG8a4228987 [2021-12-28 00:43:26,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2cadb86/43269560758447e1b097eead9bb24332 [2021-12-28 00:43:26,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:43:26,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:43:26,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:43:26,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:43:26,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:43:26,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:43:26" (1/1) ... [2021-12-28 00:43:26,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2194606c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:26, skipping insertion in model container [2021-12-28 00:43:26,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:43:26" (1/1) ... [2021-12-28 00:43:26,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:43:26,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:43:26,954 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_spec11_product08.cil.c[54831,54844] [2021-12-28 00:43:26,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:43:26,975 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:43:27,076 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_spec11_product08.cil.c[54831,54844] [2021-12-28 00:43:27,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:43:27,122 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:43:27,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27 WrapperNode [2021-12-28 00:43:27,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:43:27,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:43:27,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:43:27,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:43:27,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,206 INFO L137 Inliner]: procedures = 121, calls = 176, calls flagged for inlining = 46, calls inlined = 40, statements flattened = 735 [2021-12-28 00:43:27,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:43:27,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:43:27,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:43:27,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:43:27,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:43:27,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:43:27,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:43:27,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:43:27,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (1/1) ... [2021-12-28 00:43:27,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:43:27,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:27,294 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) [2021-12-28 00:43:27,299 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 [2021-12-28 00:43:27,323 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-28 00:43:27,323 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-28 00:43:27,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-28 00:43:27,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-28 00:43:27,323 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-28 00:43:27,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-28 00:43:27,324 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-28 00:43:27,324 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-28 00:43:27,324 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-28 00:43:27,324 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-28 00:43:27,324 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-28 00:43:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-28 00:43:27,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-28 00:43:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-28 00:43:27,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-28 00:43:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:43:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-28 00:43:27,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-28 00:43:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-28 00:43:27,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-28 00:43:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-28 00:43:27,326 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-28 00:43:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-28 00:43:27,326 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-28 00:43:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-28 00:43:27,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-28 00:43:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-28 00:43:27,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-28 00:43:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:43:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-28 00:43:27,328 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-28 00:43:27,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:43:27,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:43:27,472 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:43:27,474 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:43:27,966 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:43:27,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:43:27,979 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:43:27,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:43:27 BoogieIcfgContainer [2021-12-28 00:43:27,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:43:27,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:43:27,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:43:27,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:43:27,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:43:26" (1/3) ... [2021-12-28 00:43:27,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fe2b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:43:27, skipping insertion in model container [2021-12-28 00:43:27,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:43:27" (2/3) ... [2021-12-28 00:43:27,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fe2b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:43:27, skipping insertion in model container [2021-12-28 00:43:27,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:43:27" (3/3) ... [2021-12-28 00:43:27,993 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product08.cil.c [2021-12-28 00:43:27,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:43:27,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:43:28,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:43:28,036 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 00:43:28,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:43:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 181 states have (on average 1.5303867403314917) internal successors, (277), 183 states have internal predecessors, (277), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-28 00:43:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-28 00:43:28,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:28,070 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:28,071 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:28,079 INFO L85 PathProgramCache]: Analyzing trace with hash -338962039, now seen corresponding path program 1 times [2021-12-28 00:43:28,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:28,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821579516] [2021-12-28 00:43:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:28,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:43:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:43:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:43:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 00:43:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 00:43:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:43:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:43:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:43:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:43:28,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:28,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821579516] [2021-12-28 00:43:28,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821579516] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:28,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694762279] [2021-12-28 00:43:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:28,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:28,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:28,631 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) [2021-12-28 00:43:28,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 00:43:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:43:29,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:43:29,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:29,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694762279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:29,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:29,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-28 00:43:29,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146837170] [2021-12-28 00:43:29,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:29,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:43:29,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:29,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:43:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:29,248 INFO L87 Difference]: Start difference. First operand has 231 states, 181 states have (on average 1.5303867403314917) internal successors, (277), 183 states have internal predecessors, (277), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 00:43:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:29,284 INFO L93 Difference]: Finished difference Result 308 states and 444 transitions. [2021-12-28 00:43:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:43:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2021-12-28 00:43:29,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:29,295 INFO L225 Difference]: With dead ends: 308 [2021-12-28 00:43:29,295 INFO L226 Difference]: Without dead ends: 224 [2021-12-28 00:43:29,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:29,302 INFO L933 BasicCegarLoop]: 341 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, 341 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 [2021-12-28 00:43:29,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-28 00:43:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-12-28 00:43:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 175 states have (on average 1.52) internal successors, (266), 176 states have internal predecessors, (266), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-28 00:43:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 333 transitions. [2021-12-28 00:43:29,371 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 333 transitions. Word has length 87 [2021-12-28 00:43:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:29,372 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 333 transitions. [2021-12-28 00:43:29,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 00:43:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 333 transitions. [2021-12-28 00:43:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-28 00:43:29,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:29,379 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:29,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 00:43:29,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 00:43:29,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:29,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash 752983182, now seen corresponding path program 1 times [2021-12-28 00:43:29,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:29,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638739520] [2021-12-28 00:43:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:29,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:43:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:43:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:43:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 00:43:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 00:43:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:43:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:43:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:43:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:43:29,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:29,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638739520] [2021-12-28 00:43:29,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638739520] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:29,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253042564] [2021-12-28 00:43:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:29,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:29,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:29,781 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) [2021-12-28 00:43:29,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 00:43:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 00:43:30,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:43:30,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:30,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253042564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:30,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:30,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:43:30,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146313891] [2021-12-28 00:43:30,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:30,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:43:30,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:30,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:43:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:43:30,235 INFO L87 Difference]: Start difference. First operand 224 states and 333 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-12-28 00:43:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:30,261 INFO L93 Difference]: Finished difference Result 298 states and 425 transitions. [2021-12-28 00:43:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:43:30,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 88 [2021-12-28 00:43:30,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:30,266 INFO L225 Difference]: With dead ends: 298 [2021-12-28 00:43:30,266 INFO L226 Difference]: Without dead ends: 227 [2021-12-28 00:43:30,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:43:30,268 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 660 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 [2021-12-28 00:43:30,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 660 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-28 00:43:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2021-12-28 00:43:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 177 states have (on average 1.5141242937853108) internal successors, (268), 178 states have internal predecessors, (268), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-28 00:43:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 335 transitions. [2021-12-28 00:43:30,293 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 335 transitions. Word has length 88 [2021-12-28 00:43:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:30,294 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 335 transitions. [2021-12-28 00:43:30,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-12-28 00:43:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 335 transitions. [2021-12-28 00:43:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-28 00:43:30,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:30,303 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:30,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:30,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 00:43:30,516 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2071153164, now seen corresponding path program 1 times [2021-12-28 00:43:30,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:30,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481766472] [2021-12-28 00:43:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:30,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:43:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:43:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:43:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 00:43:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:43:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:43:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:43:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:43:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:43:30,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:30,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481766472] [2021-12-28 00:43:30,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481766472] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:30,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890901446] [2021-12-28 00:43:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:30,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:30,649 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) [2021-12-28 00:43:30,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 00:43:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:30,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:43:30,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:43:31,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:31,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890901446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:31,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:31,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:43:31,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144020855] [2021-12-28 00:43:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:31,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:43:31,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:43:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:43:31,044 INFO L87 Difference]: Start difference. First operand 226 states and 335 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-12-28 00:43:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:31,072 INFO L93 Difference]: Finished difference Result 482 states and 729 transitions. [2021-12-28 00:43:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:43:31,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 97 [2021-12-28 00:43:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:31,081 INFO L225 Difference]: With dead ends: 482 [2021-12-28 00:43:31,081 INFO L226 Difference]: Without dead ends: 283 [2021-12-28 00:43:31,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:43:31,088 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 107 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 637 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 [2021-12-28 00:43:31,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 637 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-28 00:43:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 275. [2021-12-28 00:43:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 215 states have (on average 1.5348837209302326) internal successors, (330), 216 states have internal predecessors, (330), 45 states have call successors, (45), 14 states have call predecessors, (45), 14 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-28 00:43:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 419 transitions. [2021-12-28 00:43:31,135 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 419 transitions. Word has length 97 [2021-12-28 00:43:31,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:31,136 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 419 transitions. [2021-12-28 00:43:31,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-12-28 00:43:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 419 transitions. [2021-12-28 00:43:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-28 00:43:31,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:31,141 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:31,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:31,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:31,370 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:31,371 INFO L85 PathProgramCache]: Analyzing trace with hash -681084901, now seen corresponding path program 1 times [2021-12-28 00:43:31,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:31,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851765162] [2021-12-28 00:43:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:31,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:43:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:43:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:43:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 00:43:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:43:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:43:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:43:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:43:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:43:31,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851765162] [2021-12-28 00:43:31,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851765162] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311181069] [2021-12-28 00:43:31,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:31,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:31,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:31,512 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) [2021-12-28 00:43:31,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 00:43:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:31,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 00:43:31,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 00:43:31,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:31,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311181069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:31,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:31,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 00:43:31,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829420915] [2021-12-28 00:43:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:31,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:43:31,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:43:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:43:31,921 INFO L87 Difference]: Start difference. First operand 275 states and 419 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-12-28 00:43:31,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:31,979 INFO L93 Difference]: Finished difference Result 541 states and 828 transitions. [2021-12-28 00:43:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:43:31,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 98 [2021-12-28 00:43:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:31,982 INFO L225 Difference]: With dead ends: 541 [2021-12-28 00:43:31,983 INFO L226 Difference]: Without dead ends: 277 [2021-12-28 00:43:31,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:43:31,984 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 125 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:31,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1152 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-12-28 00:43:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-12-28 00:43:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 216 states have (on average 1.5324074074074074) internal successors, (331), 218 states have internal predecessors, (331), 45 states have call successors, (45), 14 states have call predecessors, (45), 15 states have return successors, (46), 44 states have call predecessors, (46), 44 states have call successors, (46) [2021-12-28 00:43:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 422 transitions. [2021-12-28 00:43:32,001 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 422 transitions. Word has length 98 [2021-12-28 00:43:32,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:32,001 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 422 transitions. [2021-12-28 00:43:32,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-12-28 00:43:32,002 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 422 transitions. [2021-12-28 00:43:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-28 00:43:32,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:32,004 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:32,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:32,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:32,220 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:32,220 INFO L85 PathProgramCache]: Analyzing trace with hash -900581444, now seen corresponding path program 1 times [2021-12-28 00:43:32,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:32,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414453503] [2021-12-28 00:43:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:32,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 00:43:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 00:43:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:43:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:43:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:43:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:43:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:43:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:43:32,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:32,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414453503] [2021-12-28 00:43:32,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414453503] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:32,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748389120] [2021-12-28 00:43:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:32,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:32,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:32,368 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) [2021-12-28 00:43:32,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 00:43:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:32,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:43:32,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 00:43:32,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:43:32,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748389120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:32,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:43:32,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-28 00:43:32,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369439143] [2021-12-28 00:43:32,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:32,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:43:32,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:43:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:43:32,752 INFO L87 Difference]: Start difference. First operand 277 states and 422 transitions. Second operand has 5 states, 5 states have (on average 13.8) 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), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 00:43:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:32,810 INFO L93 Difference]: Finished difference Result 543 states and 833 transitions. [2021-12-28 00:43:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:43:32,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) 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), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-12-28 00:43:32,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:32,812 INFO L225 Difference]: With dead ends: 543 [2021-12-28 00:43:32,813 INFO L226 Difference]: Without dead ends: 279 [2021-12-28 00:43:32,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-28 00:43:32,814 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 124 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:32,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1141 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:43:32,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-28 00:43:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-12-28 00:43:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 217 states have (on average 1.5299539170506913) internal successors, (332), 220 states have internal predecessors, (332), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (51), 44 states have call predecessors, (51), 44 states have call successors, (51) [2021-12-28 00:43:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 428 transitions. [2021-12-28 00:43:32,830 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 428 transitions. Word has length 99 [2021-12-28 00:43:32,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:32,831 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 428 transitions. [2021-12-28 00:43:32,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) 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), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 00:43:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 428 transitions. [2021-12-28 00:43:32,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 00:43:32,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:32,833 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:32,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:33,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:33,048 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2035618973, now seen corresponding path program 1 times [2021-12-28 00:43:33,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:33,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447642245] [2021-12-28 00:43:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:33,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 00:43:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:43:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:43:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:43:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:43:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:43:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:43:33,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:33,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447642245] [2021-12-28 00:43:33,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447642245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:33,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:33,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:43:33,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466726325] [2021-12-28 00:43:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:33,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:43:33,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:33,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:43:33,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:33,183 INFO L87 Difference]: Start difference. First operand 279 states and 428 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-12-28 00:43:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:34,145 INFO L93 Difference]: Finished difference Result 601 states and 925 transitions. [2021-12-28 00:43:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:43:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 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 100 [2021-12-28 00:43:34,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:34,148 INFO L225 Difference]: With dead ends: 601 [2021-12-28 00:43:34,148 INFO L226 Difference]: Without dead ends: 345 [2021-12-28 00:43:34,149 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:34,150 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 678 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:34,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 1180 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:43:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-28 00:43:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 279. [2021-12-28 00:43:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 217 states have (on average 1.5299539170506913) internal successors, (332), 220 states have internal predecessors, (332), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (50), 44 states have call predecessors, (50), 44 states have call successors, (50) [2021-12-28 00:43:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 427 transitions. [2021-12-28 00:43:34,170 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 427 transitions. Word has length 100 [2021-12-28 00:43:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:34,171 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 427 transitions. [2021-12-28 00:43:34,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-12-28 00:43:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 427 transitions. [2021-12-28 00:43:34,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 00:43:34,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:34,173 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:34,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 00:43:34,173 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:34,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1299983974, now seen corresponding path program 2 times [2021-12-28 00:43:34,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:34,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708039822] [2021-12-28 00:43:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:34,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 00:43:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:43:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:43:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:43:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:43:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:43:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:43:34,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:34,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708039822] [2021-12-28 00:43:34,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708039822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:34,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:34,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:43:34,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638140671] [2021-12-28 00:43:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:34,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:43:34,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:43:34,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:43:34,281 INFO L87 Difference]: Start difference. First operand 279 states and 427 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-12-28 00:43:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:35,213 INFO L93 Difference]: Finished difference Result 603 states and 928 transitions. [2021-12-28 00:43:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:43:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 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 101 [2021-12-28 00:43:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:35,216 INFO L225 Difference]: With dead ends: 603 [2021-12-28 00:43:35,216 INFO L226 Difference]: Without dead ends: 347 [2021-12-28 00:43:35,217 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:35,217 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 672 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:35,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 1183 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 00:43:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-28 00:43:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-12-28 00:43:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 218 states have (on average 1.5275229357798166) internal successors, (333), 222 states have internal predecessors, (333), 45 states have call successors, (45), 14 states have call predecessors, (45), 17 states have return successors, (52), 44 states have call predecessors, (52), 44 states have call successors, (52) [2021-12-28 00:43:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 430 transitions. [2021-12-28 00:43:35,245 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 430 transitions. Word has length 101 [2021-12-28 00:43:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:35,246 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 430 transitions. [2021-12-28 00:43:35,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-12-28 00:43:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 430 transitions. [2021-12-28 00:43:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-28 00:43:35,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:35,249 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:35,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 00:43:35,249 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:35,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1942025310, now seen corresponding path program 1 times [2021-12-28 00:43:35,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:35,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753329237] [2021-12-28 00:43:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:35,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:43:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:43:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:43:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:43:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:43:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:43:35,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:35,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753329237] [2021-12-28 00:43:35,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753329237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:35,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:35,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:43:35,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656753610] [2021-12-28 00:43:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:35,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:43:35,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:43:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:43:35,386 INFO L87 Difference]: Start difference. First operand 281 states and 430 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 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) [2021-12-28 00:43:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:36,655 INFO L93 Difference]: Finished difference Result 601 states and 923 transitions. [2021-12-28 00:43:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:43:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 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 102 [2021-12-28 00:43:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:36,658 INFO L225 Difference]: With dead ends: 601 [2021-12-28 00:43:36,658 INFO L226 Difference]: Without dead ends: 347 [2021-12-28 00:43:36,659 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:36,660 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 785 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:36,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1484 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:43:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-28 00:43:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-12-28 00:43:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 218 states have (on average 1.5275229357798166) internal successors, (333), 222 states have internal predecessors, (333), 45 states have call successors, (45), 14 states have call predecessors, (45), 17 states have return successors, (51), 44 states have call predecessors, (51), 44 states have call successors, (51) [2021-12-28 00:43:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 429 transitions. [2021-12-28 00:43:36,682 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 429 transitions. Word has length 102 [2021-12-28 00:43:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:36,682 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 429 transitions. [2021-12-28 00:43:36,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 8 states have internal predecessors, (70), 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) [2021-12-28 00:43:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 429 transitions. [2021-12-28 00:43:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-28 00:43:36,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:36,685 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:36,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 00:43:36,685 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1612619593, now seen corresponding path program 2 times [2021-12-28 00:43:36,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:36,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486344831] [2021-12-28 00:43:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:36,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:43:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:43:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:43:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:43:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:43:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:43:36,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:36,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486344831] [2021-12-28 00:43:36,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486344831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:36,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:36,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:43:36,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712915932] [2021-12-28 00:43:36,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:36,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:43:36,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:43:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:43:36,826 INFO L87 Difference]: Start difference. First operand 281 states and 429 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 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) [2021-12-28 00:43:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:38,101 INFO L93 Difference]: Finished difference Result 603 states and 929 transitions. [2021-12-28 00:43:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:43:38,102 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 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 103 [2021-12-28 00:43:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:38,104 INFO L225 Difference]: With dead ends: 603 [2021-12-28 00:43:38,104 INFO L226 Difference]: Without dead ends: 349 [2021-12-28 00:43:38,105 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:38,106 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 779 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:38,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 1487 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:43:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-28 00:43:38,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 283. [2021-12-28 00:43:38,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 219 states have (on average 1.5251141552511416) internal successors, (334), 224 states have internal predecessors, (334), 45 states have call successors, (45), 14 states have call predecessors, (45), 18 states have return successors, (56), 44 states have call predecessors, (56), 44 states have call successors, (56) [2021-12-28 00:43:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 435 transitions. [2021-12-28 00:43:38,142 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 435 transitions. Word has length 103 [2021-12-28 00:43:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:38,143 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 435 transitions. [2021-12-28 00:43:38,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 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) [2021-12-28 00:43:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 435 transitions. [2021-12-28 00:43:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-28 00:43:38,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:38,145 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:38,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 00:43:38,146 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash 367097945, now seen corresponding path program 1 times [2021-12-28 00:43:38,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:38,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150533729] [2021-12-28 00:43:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:38,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:43:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:43:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:43:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:43:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:43:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-28 00:43:38,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:38,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150533729] [2021-12-28 00:43:38,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150533729] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:43:38,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605752708] [2021-12-28 00:43:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:38,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:38,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:43:38,288 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) [2021-12-28 00:43:38,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 00:43:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:38,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:43:38,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:43:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:38,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:43:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:38,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605752708] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:43:38,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:43:38,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-28 00:43:38,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227680817] [2021-12-28 00:43:38,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:43:38,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 00:43:38,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:38,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 00:43:38,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:43:38,867 INFO L87 Difference]: Start difference. First operand 283 states and 435 transitions. Second operand has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 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) [2021-12-28 00:43:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:41,235 INFO L93 Difference]: Finished difference Result 1282 states and 2157 transitions. [2021-12-28 00:43:41,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 00:43:41,236 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 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 104 [2021-12-28 00:43:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:41,243 INFO L225 Difference]: With dead ends: 1282 [2021-12-28 00:43:41,243 INFO L226 Difference]: Without dead ends: 1030 [2021-12-28 00:43:41,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-28 00:43:41,247 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 2472 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 3521 mSolverCounterSat, 1026 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 4547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1026 IncrementalHoareTripleChecker+Valid, 3521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:41,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2474 Valid, 3649 Invalid, 4547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1026 Valid, 3521 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 00:43:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-12-28 00:43:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 611. [2021-12-28 00:43:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 483 states have (on average 1.5838509316770186) internal successors, (765), 488 states have internal predecessors, (765), 109 states have call successors, (109), 14 states have call predecessors, (109), 18 states have return successors, (130), 108 states have call predecessors, (130), 108 states have call successors, (130) [2021-12-28 00:43:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1004 transitions. [2021-12-28 00:43:41,296 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1004 transitions. Word has length 104 [2021-12-28 00:43:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:41,297 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 1004 transitions. [2021-12-28 00:43:41,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.357142857142858) internal successors, (117), 11 states have internal predecessors, (117), 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) [2021-12-28 00:43:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1004 transitions. [2021-12-28 00:43:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-28 00:43:41,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:41,301 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:41,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 00:43:41,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:43:41,515 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:41,516 INFO L85 PathProgramCache]: Analyzing trace with hash -810993489, now seen corresponding path program 1 times [2021-12-28 00:43:41,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:41,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984911902] [2021-12-28 00:43:41,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:41,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:43:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:43:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:43:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:43:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:43:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:41,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984911902] [2021-12-28 00:43:41,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984911902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:41,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:41,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:41,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681278061] [2021-12-28 00:43:41,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:41,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:41,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:41,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:41,637 INFO L87 Difference]: Start difference. First operand 611 states and 1004 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 00:43:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:42,422 INFO L93 Difference]: Finished difference Result 1518 states and 2560 transitions. [2021-12-28 00:43:42,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:42,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2021-12-28 00:43:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:42,428 INFO L225 Difference]: With dead ends: 1518 [2021-12-28 00:43:42,428 INFO L226 Difference]: Without dead ends: 985 [2021-12-28 00:43:42,430 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:42,431 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 669 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:42,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 1048 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2021-12-28 00:43:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 911. [2021-12-28 00:43:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 719 states have (on average 1.599443671766342) internal successors, (1150), 724 states have internal predecessors, (1150), 173 states have call successors, (173), 14 states have call predecessors, (173), 18 states have return successors, (204), 172 states have call predecessors, (204), 172 states have call successors, (204) [2021-12-28 00:43:42,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1527 transitions. [2021-12-28 00:43:42,490 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1527 transitions. Word has length 107 [2021-12-28 00:43:42,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:42,490 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1527 transitions. [2021-12-28 00:43:42,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 00:43:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1527 transitions. [2021-12-28 00:43:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 00:43:42,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:42,495 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:42,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 00:43:42,495 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:42,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:42,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2062729237, now seen corresponding path program 1 times [2021-12-28 00:43:42,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:42,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691636607] [2021-12-28 00:43:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:42,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:43:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:43:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:43:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:43:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:43:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:42,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:42,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691636607] [2021-12-28 00:43:42,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691636607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:42,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:42,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:42,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002789770] [2021-12-28 00:43:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:42,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:42,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:42,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:42,587 INFO L87 Difference]: Start difference. First operand 911 states and 1527 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 00:43:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:43,392 INFO L93 Difference]: Finished difference Result 2258 states and 3840 transitions. [2021-12-28 00:43:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:43,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2021-12-28 00:43:43,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:43,400 INFO L225 Difference]: With dead ends: 2258 [2021-12-28 00:43:43,400 INFO L226 Difference]: Without dead ends: 1478 [2021-12-28 00:43:43,404 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:43,404 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 665 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:43,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1020 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-12-28 00:43:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1404. [2021-12-28 00:43:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1117 states have (on average 1.6042972247090421) internal successors, (1792), 1122 states have internal predecessors, (1792), 268 states have call successors, (268), 14 states have call predecessors, (268), 18 states have return successors, (299), 267 states have call predecessors, (299), 267 states have call successors, (299) [2021-12-28 00:43:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2359 transitions. [2021-12-28 00:43:43,517 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2359 transitions. Word has length 108 [2021-12-28 00:43:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:43,518 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 2359 transitions. [2021-12-28 00:43:43,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 00:43:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2359 transitions. [2021-12-28 00:43:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 00:43:43,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:43,524 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:43,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 00:43:43,524 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1726810685, now seen corresponding path program 1 times [2021-12-28 00:43:43,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:43,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000928260] [2021-12-28 00:43:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:43,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:43:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:43:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:43:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:43:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:43:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:43,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:43,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000928260] [2021-12-28 00:43:43,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000928260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:43,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:43,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:43,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443839595] [2021-12-28 00:43:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:43,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:43,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:43,618 INFO L87 Difference]: Start difference. First operand 1404 states and 2359 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) [2021-12-28 00:43:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:44,397 INFO L93 Difference]: Finished difference Result 3360 states and 5758 transitions. [2021-12-28 00:43:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:44,397 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 [2021-12-28 00:43:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:44,411 INFO L225 Difference]: With dead ends: 3360 [2021-12-28 00:43:44,412 INFO L226 Difference]: Without dead ends: 2222 [2021-12-28 00:43:44,416 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:44,417 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 666 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:44,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1016 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-12-28 00:43:44,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2148. [2021-12-28 00:43:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 1738 states have (on average 1.6081703107019563) internal successors, (2795), 1743 states have internal predecessors, (2795), 391 states have call successors, (391), 14 states have call predecessors, (391), 18 states have return successors, (438), 390 states have call predecessors, (438), 390 states have call successors, (438) [2021-12-28 00:43:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3624 transitions. [2021-12-28 00:43:44,566 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3624 transitions. Word has length 109 [2021-12-28 00:43:44,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:44,566 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 3624 transitions. [2021-12-28 00:43:44,567 INFO L471 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) [2021-12-28 00:43:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3624 transitions. [2021-12-28 00:43:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-28 00:43:44,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:44,573 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:44,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 00:43:44,574 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2113108746, now seen corresponding path program 1 times [2021-12-28 00:43:44,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:44,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585048510] [2021-12-28 00:43:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:44,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:43:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:43:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:43:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:43:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:43:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:44,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:44,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585048510] [2021-12-28 00:43:44,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585048510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:44,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:44,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:44,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292338004] [2021-12-28 00:43:44,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:44,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:44,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:44,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:44,670 INFO L87 Difference]: Start difference. First operand 2148 states and 3624 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) [2021-12-28 00:43:45,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:45,532 INFO L93 Difference]: Finished difference Result 5069 states and 8738 transitions. [2021-12-28 00:43:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:45,533 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 [2021-12-28 00:43:45,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:45,551 INFO L225 Difference]: With dead ends: 5069 [2021-12-28 00:43:45,551 INFO L226 Difference]: Without dead ends: 3406 [2021-12-28 00:43:45,558 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:45,558 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 661 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:45,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 1019 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2021-12-28 00:43:45,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3332. [2021-12-28 00:43:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3332 states, 2743 states have (on average 1.6102807145461173) internal successors, (4417), 2748 states have internal predecessors, (4417), 570 states have call successors, (570), 14 states have call predecessors, (570), 18 states have return successors, (643), 569 states have call predecessors, (643), 569 states have call successors, (643) [2021-12-28 00:43:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 5630 transitions. [2021-12-28 00:43:45,814 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 5630 transitions. Word has length 110 [2021-12-28 00:43:45,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:45,814 INFO L470 AbstractCegarLoop]: Abstraction has 3332 states and 5630 transitions. [2021-12-28 00:43:45,814 INFO L471 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) [2021-12-28 00:43:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 5630 transitions. [2021-12-28 00:43:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-28 00:43:45,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:45,822 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:45,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 00:43:45,822 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:45,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1350938745, now seen corresponding path program 1 times [2021-12-28 00:43:45,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:45,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260083426] [2021-12-28 00:43:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:45,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:43:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:43:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:43:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:43:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:43:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:45,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260083426] [2021-12-28 00:43:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260083426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:45,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:45,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:45,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245225648] [2021-12-28 00:43:45,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:45,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:45,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:45,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:45,933 INFO L87 Difference]: Start difference. First operand 3332 states and 5630 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) [2021-12-28 00:43:46,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:46,822 INFO L93 Difference]: Finished difference Result 8142 states and 14054 transitions. [2021-12-28 00:43:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:46,822 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 [2021-12-28 00:43:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:46,851 INFO L225 Difference]: With dead ends: 8142 [2021-12-28 00:43:46,851 INFO L226 Difference]: Without dead ends: 5547 [2021-12-28 00:43:46,863 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:46,864 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 661 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:46,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 1053 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:46,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-12-28 00:43:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5473. [2021-12-28 00:43:47,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 4508 states have (on average 1.60226264418811) internal successors, (7223), 4513 states have internal predecessors, (7223), 946 states have call successors, (946), 14 states have call predecessors, (946), 18 states have return successors, (1063), 945 states have call predecessors, (1063), 945 states have call successors, (1063) [2021-12-28 00:43:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 9232 transitions. [2021-12-28 00:43:47,289 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 9232 transitions. Word has length 111 [2021-12-28 00:43:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:47,290 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 9232 transitions. [2021-12-28 00:43:47,290 INFO L471 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) [2021-12-28 00:43:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 9232 transitions. [2021-12-28 00:43:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-28 00:43:47,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:47,300 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:47,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 00:43:47,301 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1613475142, now seen corresponding path program 1 times [2021-12-28 00:43:47,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:47,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143606980] [2021-12-28 00:43:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:47,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:43:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:43:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:43:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:43:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:43:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:47,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:47,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143606980] [2021-12-28 00:43:47,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143606980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:47,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:47,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:47,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949915118] [2021-12-28 00:43:47,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:47,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:47,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:47,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:47,401 INFO L87 Difference]: Start difference. First operand 5473 states and 9232 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) [2021-12-28 00:43:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:48,617 INFO L93 Difference]: Finished difference Result 13564 states and 23355 transitions. [2021-12-28 00:43:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:48,618 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 [2021-12-28 00:43:48,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:48,677 INFO L225 Difference]: With dead ends: 13564 [2021-12-28 00:43:48,682 INFO L226 Difference]: Without dead ends: 9230 [2021-12-28 00:43:48,697 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:48,698 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 660 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:48,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 1021 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 00:43:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9230 states. [2021-12-28 00:43:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9230 to 9156. [2021-12-28 00:43:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9156 states, 7585 states have (on average 1.5992089650626236) internal successors, (12130), 7590 states have internal predecessors, (12130), 1552 states have call successors, (1552), 14 states have call predecessors, (1552), 18 states have return successors, (1747), 1551 states have call predecessors, (1747), 1551 states have call successors, (1747) [2021-12-28 00:43:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9156 states to 9156 states and 15429 transitions. [2021-12-28 00:43:49,393 INFO L78 Accepts]: Start accepts. Automaton has 9156 states and 15429 transitions. Word has length 112 [2021-12-28 00:43:49,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:49,393 INFO L470 AbstractCegarLoop]: Abstraction has 9156 states and 15429 transitions. [2021-12-28 00:43:49,394 INFO L471 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) [2021-12-28 00:43:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 9156 states and 15429 transitions. [2021-12-28 00:43:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 00:43:49,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:49,407 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:49,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 00:43:49,408 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash 386562555, now seen corresponding path program 1 times [2021-12-28 00:43:49,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:49,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84653729] [2021-12-28 00:43:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:49,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:43:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:43:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:43:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:43:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:43:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:49,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:49,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84653729] [2021-12-28 00:43:49,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84653729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:49,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:49,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:49,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016718030] [2021-12-28 00:43:49,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:49,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:49,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:49,503 INFO L87 Difference]: Start difference. First operand 9156 states and 15429 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) [2021-12-28 00:43:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:50,902 INFO L93 Difference]: Finished difference Result 23748 states and 40796 transitions. [2021-12-28 00:43:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:50,902 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 [2021-12-28 00:43:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:50,961 INFO L225 Difference]: With dead ends: 23748 [2021-12-28 00:43:50,961 INFO L226 Difference]: Without dead ends: 16183 [2021-12-28 00:43:50,990 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:50,991 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 656 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:50,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 1056 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16183 states. [2021-12-28 00:43:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16183 to 16109. [2021-12-28 00:43:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16109 states, 13335 states have (on average 1.589801274840645) internal successors, (21200), 13340 states have internal predecessors, (21200), 2755 states have call successors, (2755), 14 states have call predecessors, (2755), 18 states have return successors, (3094), 2754 states have call predecessors, (3094), 2754 states have call successors, (3094) [2021-12-28 00:43:51,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16109 states to 16109 states and 27049 transitions. [2021-12-28 00:43:51,950 INFO L78 Accepts]: Start accepts. Automaton has 16109 states and 27049 transitions. Word has length 113 [2021-12-28 00:43:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:51,951 INFO L470 AbstractCegarLoop]: Abstraction has 16109 states and 27049 transitions. [2021-12-28 00:43:51,951 INFO L471 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) [2021-12-28 00:43:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16109 states and 27049 transitions. [2021-12-28 00:43:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-28 00:43:51,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:51,967 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:51,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 00:43:51,967 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1247882437, now seen corresponding path program 1 times [2021-12-28 00:43:51,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014895707] [2021-12-28 00:43:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:51,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:43:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:43:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:43:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:43:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:43:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:52,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:52,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014895707] [2021-12-28 00:43:52,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014895707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:52,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:52,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:52,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741046450] [2021-12-28 00:43:52,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:52,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:52,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:52,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:52,058 INFO L87 Difference]: Start difference. First operand 16109 states and 27049 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) [2021-12-28 00:43:54,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:54,044 INFO L93 Difference]: Finished difference Result 42714 states and 73193 transitions. [2021-12-28 00:43:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:54,045 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 [2021-12-28 00:43:54,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:54,160 INFO L225 Difference]: With dead ends: 42714 [2021-12-28 00:43:54,160 INFO L226 Difference]: Without dead ends: 28838 [2021-12-28 00:43:54,208 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:54,209 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 653 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:54,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1025 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:54,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28838 states. [2021-12-28 00:43:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28838 to 28764. [2021-12-28 00:43:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28764 states, 23951 states have (on average 1.5851947726608493) internal successors, (37967), 23956 states have internal predecessors, (37967), 4794 states have call successors, (4794), 14 states have call predecessors, (4794), 18 states have return successors, (5407), 4793 states have call predecessors, (5407), 4793 states have call successors, (5407) [2021-12-28 00:43:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28764 states to 28764 states and 48168 transitions. [2021-12-28 00:43:55,708 INFO L78 Accepts]: Start accepts. Automaton has 28764 states and 48168 transitions. Word has length 114 [2021-12-28 00:43:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:43:55,709 INFO L470 AbstractCegarLoop]: Abstraction has 28764 states and 48168 transitions. [2021-12-28 00:43:55,709 INFO L471 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) [2021-12-28 00:43:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 28764 states and 48168 transitions. [2021-12-28 00:43:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-28 00:43:55,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:43:55,959 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:43:55,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 00:43:55,959 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:43:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:43:55,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1042607139, now seen corresponding path program 1 times [2021-12-28 00:43:55,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:43:55,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163218455] [2021-12-28 00:43:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:43:55,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:43:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:43:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:43:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:43:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:43:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:43:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:43:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:43:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:43:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:43:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:43:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:43:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:43:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:43:56,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:43:56,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163218455] [2021-12-28 00:43:56,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163218455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:43:56,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:43:56,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:43:56,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042934055] [2021-12-28 00:43:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:43:56,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:43:56,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:43:56,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:43:56,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:43:56,065 INFO L87 Difference]: Start difference. First operand 28764 states and 48168 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) [2021-12-28 00:43:59,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:43:59,056 INFO L93 Difference]: Finished difference Result 78476 states and 133557 transitions. [2021-12-28 00:43:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:43:59,057 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 [2021-12-28 00:43:59,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:43:59,297 INFO L225 Difference]: With dead ends: 78476 [2021-12-28 00:43:59,297 INFO L226 Difference]: Without dead ends: 52717 [2021-12-28 00:43:59,375 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:43:59,376 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 652 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:43:59,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1018 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:43:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52717 states. [2021-12-28 00:44:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52717 to 52643. [2021-12-28 00:44:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52643 states, 44115 states have (on average 1.5792814235520798) internal successors, (69670), 44120 states have internal predecessors, (69670), 8509 states have call successors, (8509), 14 states have call predecessors, (8509), 18 states have return successors, (9654), 8508 states have call predecessors, (9654), 8508 states have call successors, (9654) [2021-12-28 00:44:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52643 states to 52643 states and 87833 transitions. [2021-12-28 00:44:02,741 INFO L78 Accepts]: Start accepts. Automaton has 52643 states and 87833 transitions. Word has length 115 [2021-12-28 00:44:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:44:02,741 INFO L470 AbstractCegarLoop]: Abstraction has 52643 states and 87833 transitions. [2021-12-28 00:44:02,741 INFO L471 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) [2021-12-28 00:44:02,741 INFO L276 IsEmpty]: Start isEmpty. Operand 52643 states and 87833 transitions. [2021-12-28 00:44:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-28 00:44:02,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:44:02,761 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:44:02,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 00:44:02,762 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:44:02,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:44:02,762 INFO L85 PathProgramCache]: Analyzing trace with hash 374275547, now seen corresponding path program 1 times [2021-12-28 00:44:02,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:44:02,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801919855] [2021-12-28 00:44:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:44:02,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:44:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:44:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:44:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:44:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:44:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:44:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:44:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:44:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:44:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:44:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:44:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:44:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:44:02,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:44:02,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801919855] [2021-12-28 00:44:02,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801919855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:44:02,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:44:02,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:44:02,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427353930] [2021-12-28 00:44:02,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:44:02,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:44:02,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:44:02,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:44:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:44:02,854 INFO L87 Difference]: Start difference. First operand 52643 states and 87833 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) [2021-12-28 00:44:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:44:07,288 INFO L93 Difference]: Finished difference Result 98247 states and 167487 transitions. [2021-12-28 00:44:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:44:07,289 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 [2021-12-28 00:44:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:44:07,587 INFO L225 Difference]: With dead ends: 98247 [2021-12-28 00:44:07,588 INFO L226 Difference]: Without dead ends: 98176 [2021-12-28 00:44:07,625 INFO L932 BasicCegarLoop]: 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 [2021-12-28 00:44:07,625 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 650 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:44:07,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1020 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 00:44:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98176 states. [2021-12-28 00:44:12,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98176 to 98102. [2021-12-28 00:44:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98102 states, 82775 states have (on average 1.5719359710057383) internal successors, (130117), 82780 states have internal predecessors, (130117), 15308 states have call successors, (15308), 14 states have call predecessors, (15308), 18 states have return successors, (17499), 15307 states have call predecessors, (17499), 15307 states have call successors, (17499) [2021-12-28 00:44:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98102 states to 98102 states and 162924 transitions. [2021-12-28 00:44:12,928 INFO L78 Accepts]: Start accepts. Automaton has 98102 states and 162924 transitions. Word has length 116 [2021-12-28 00:44:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:44:12,928 INFO L470 AbstractCegarLoop]: Abstraction has 98102 states and 162924 transitions. [2021-12-28 00:44:12,928 INFO L471 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) [2021-12-28 00:44:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 98102 states and 162924 transitions. [2021-12-28 00:44:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 00:44:12,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:44:12,952 INFO L514 BasicCegarLoop]: 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] [2021-12-28 00:44:12,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 00:44:12,953 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:44:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:44:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash 974880476, now seen corresponding path program 1 times [2021-12-28 00:44:12,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:44:12,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62628678] [2021-12-28 00:44:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:44:12,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:44:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:44:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:44:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:44:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:44:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:44:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:44:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:44:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:44:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:44:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:44:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:44:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-28 00:44:13,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:44:13,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62628678] [2021-12-28 00:44:13,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62628678] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:44:13,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742773836] [2021-12-28 00:44:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:44:13,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:44:13,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:44:13,246 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 00:44:13,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 00:44:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:44:13,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-28 00:44:13,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:44:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 00:44:13,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:44:13,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742773836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:44:13,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:44:13,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2021-12-28 00:44:13,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521194382] [2021-12-28 00:44:13,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:44:13,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:44:13,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:44:13,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:44:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2021-12-28 00:44:13,802 INFO L87 Difference]: Start difference. First operand 98102 states and 162924 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-28 00:44:18,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:44:18,149 INFO L93 Difference]: Finished difference Result 98322 states and 163196 transitions. [2021-12-28 00:44:18,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 00:44:18,150 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 117 [2021-12-28 00:44:18,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:44:18,655 INFO L225 Difference]: With dead ends: 98322 [2021-12-28 00:44:18,656 INFO L226 Difference]: Without dead ends: 98257 [2021-12-28 00:44:18,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=1609, Unknown=0, NotChecked=0, Total=1806 [2021-12-28 00:44:18,706 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 511 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:44:18,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 3522 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 00:44:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98257 states.