./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 e19ca921 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-e19ca92 [2021-12-22 11:23:17,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:23:17,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:23:17,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:23:17,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:23:17,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:23:17,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:23:17,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:23:17,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:23:17,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:23:17,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:23:17,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:23:17,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:23:17,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:23:17,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:23:17,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:23:17,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:23:17,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:23:17,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:23:17,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:23:17,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:23:17,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:23:17,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:23:17,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:23:17,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:23:17,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:23:17,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:23:17,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:23:17,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:23:17,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:23:17,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:23:17,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:23:17,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:23:17,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:23:17,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:23:17,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:23:17,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:23:17,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:23:17,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:23:17,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:23:17,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:23:17,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:23:17,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:23:17,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:23:17,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:23:17,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:23:17,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:23:17,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:23:17,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:23:17,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:23:17,951 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:23:17,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:23:17,952 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:23:17,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:23:17,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:23:17,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:23:17,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:23:17,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:23:17,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:23:17,954 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:23:17,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:23:17,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:23:17,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:23:17,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:23:17,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:23:17,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:23:17,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:23:17,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:23:17,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:23:17,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:23:17,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:23:17,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:23:17,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:23:17,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:23:17,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:23:17,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:23:17,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f377b9a54c9ee2ed75c64ae9c58ce8e9d7938b6493e908dfb7e7f7a3cef80e [2021-12-22 11:23:18,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:23:18,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:23:18,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:23:18,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:23:18,239 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:23:18,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2021-12-22 11:23:18,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70e67f96/e349112583be4b8da4f4e3300d08c600/FLAGb4a86fbda [2021-12-22 11:23:18,847 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:23:18,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product08.cil.c [2021-12-22 11:23:18,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70e67f96/e349112583be4b8da4f4e3300d08c600/FLAGb4a86fbda [2021-12-22 11:23:19,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70e67f96/e349112583be4b8da4f4e3300d08c600 [2021-12-22 11:23:19,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:23:19,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:23:19,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:23:19,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:23:19,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:23:19,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:23:19" (1/1) ... [2021-12-22 11:23:19,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e9b81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:19, skipping insertion in model container [2021-12-22 11:23:19,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:23:19" (1/1) ... [2021-12-22 11:23:19,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:23:19,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:23:19,897 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] [2021-12-22 11:23:19,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:23:19,919 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:23:19,991 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] [2021-12-22 11:23:19,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:23:20,022 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:23:20,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20 WrapperNode [2021-12-22 11:23:20,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:23:20,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:23:20,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:23:20,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:23:20,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,099 INFO L137 Inliner]: procedures = 121, calls = 176, calls flagged for inlining = 46, calls inlined = 40, statements flattened = 735 [2021-12-22 11:23:20,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:23:20,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:23:20,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:23:20,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:23:20,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:23:20,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:23:20,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:23:20,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:23:20,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (1/1) ... [2021-12-22 11:23:20,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:23:20,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:23:20,179 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) [2021-12-22 11:23:20,180 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 [2021-12-22 11:23:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-22 11:23:20,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-22 11:23:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-22 11:23:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-22 11:23:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-22 11:23:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-22 11:23:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-22 11:23:20,211 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-22 11:23:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-22 11:23:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-22 11:23:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-22 11:23:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-22 11:23:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-22 11:23:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-22 11:23:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-22 11:23:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:23:20,213 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-22 11:23:20,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-22 11:23:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-22 11:23:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-22 11:23:20,214 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-22 11:23:20,214 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-22 11:23:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-22 11:23:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-22 11:23:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-22 11:23:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-22 11:23:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-22 11:23:20,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-22 11:23:20,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:23:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-22 11:23:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-22 11:23:20,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:23:20,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:23:20,445 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:23:20,447 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:23:21,059 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:23:21,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:23:21,067 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:23:21,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:23:21 BoogieIcfgContainer [2021-12-22 11:23:21,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:23:21,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:23:21,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:23:21,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:23:21,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:23:19" (1/3) ... [2021-12-22 11:23:21,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6ebf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:23:21, skipping insertion in model container [2021-12-22 11:23:21,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:20" (2/3) ... [2021-12-22 11:23:21,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6ebf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:23:21, skipping insertion in model container [2021-12-22 11:23:21,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:23:21" (3/3) ... [2021-12-22 11:23:21,076 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product08.cil.c [2021-12-22 11:23:21,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:23:21,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:23:21,117 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:23:21,124 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 [2021-12-22 11:23:21,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:23:21,152 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) [2021-12-22 11:23:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-22 11:23:21,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:21,170 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] [2021-12-22 11:23:21,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:21,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash -338962039, now seen corresponding path program 1 times [2021-12-22 11:23:21,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:21,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488870584] [2021-12-22 11:23:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:21,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:23:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:23:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:23:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 11:23:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 11:23:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:23:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:23:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:23:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 11:23:21,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:21,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488870584] [2021-12-22 11:23:21,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488870584] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:23:21,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312308789] [2021-12-22 11:23:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:21,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:23:21,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:23:21,690 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) [2021-12-22 11:23:21,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 11:23:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:21,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 11:23:21,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:23:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-22 11:23:22,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:23:22,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312308789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:22,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:23:22,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-22 11:23:22,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843163133] [2021-12-22 11:23:22,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:22,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 11:23:22,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:22,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 11:23:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:23:22,232 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) [2021-12-22 11:23:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:22,285 INFO L93 Difference]: Finished difference Result 308 states and 444 transitions. [2021-12-22 11:23:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 11:23:22,288 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 [2021-12-22 11:23:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:22,297 INFO L225 Difference]: With dead ends: 308 [2021-12-22 11:23:22,297 INFO L226 Difference]: Without dead ends: 224 [2021-12-22 11:23:22,301 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 [2021-12-22 11:23:22,303 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 [2021-12-22 11:23:22,304 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] [2021-12-22 11:23:22,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-22 11:23:22,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-12-22 11:23:22,357 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) [2021-12-22 11:23:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 333 transitions. [2021-12-22 11:23:22,361 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 333 transitions. Word has length 87 [2021-12-22 11:23:22,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:22,363 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 333 transitions. [2021-12-22 11:23:22,363 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) [2021-12-22 11:23:22,364 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 333 transitions. [2021-12-22 11:23:22,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-22 11:23:22,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:22,368 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] [2021-12-22 11:23:22,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 11:23:22,593 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 [2021-12-22 11:23:22,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:22,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:22,594 INFO L85 PathProgramCache]: Analyzing trace with hash 752983182, now seen corresponding path program 1 times [2021-12-22 11:23:22,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:22,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108528621] [2021-12-22 11:23:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:22,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:23:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:23:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:23:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 11:23:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 11:23:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:23:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:23:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:23:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 11:23:22,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:22,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108528621] [2021-12-22 11:23:22,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108528621] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:23:22,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026813375] [2021-12-22 11:23:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:22,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:23:22,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:23:22,797 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) [2021-12-22 11:23:22,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 11:23:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 11:23:23,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:23:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-22 11:23:23,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:23:23,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026813375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:23,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:23:23,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:23:23,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420716570] [2021-12-22 11:23:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:23,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:23:23,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:23,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:23:23,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:23:23,222 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) [2021-12-22 11:23:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:23,267 INFO L93 Difference]: Finished difference Result 298 states and 425 transitions. [2021-12-22 11:23:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:23:23,271 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 [2021-12-22 11:23:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:23,274 INFO L225 Difference]: With dead ends: 298 [2021-12-22 11:23:23,274 INFO L226 Difference]: Without dead ends: 227 [2021-12-22 11:23:23,275 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 [2021-12-22 11:23:23,276 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 [2021-12-22 11:23:23,277 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] [2021-12-22 11:23:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-22 11:23:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2021-12-22 11:23:23,292 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) [2021-12-22 11:23:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 335 transitions. [2021-12-22 11:23:23,295 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 335 transitions. Word has length 88 [2021-12-22 11:23:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:23,296 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 335 transitions. [2021-12-22 11:23:23,296 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) [2021-12-22 11:23:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 335 transitions. [2021-12-22 11:23:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-22 11:23:23,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:23,300 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] [2021-12-22 11:23:23,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 11:23:23,520 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 [2021-12-22 11:23:23,521 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:23,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2071153164, now seen corresponding path program 1 times [2021-12-22 11:23:23,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:23,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619102958] [2021-12-22 11:23:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:23,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:23:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:23:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:23:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 11:23:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:23:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:23:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:23:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:23:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:23:23,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:23,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619102958] [2021-12-22 11:23:23,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619102958] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:23:23,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066650256] [2021-12-22 11:23:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:23,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:23:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:23:23,700 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) [2021-12-22 11:23:23,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 11:23:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:23,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:23:23,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:23:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-22 11:23:24,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:23:24,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066650256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:24,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:23:24,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:23:24,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210431483] [2021-12-22 11:23:24,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:24,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:23:24,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:23:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:23:24,110 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) [2021-12-22 11:23:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:24,134 INFO L93 Difference]: Finished difference Result 482 states and 729 transitions. [2021-12-22 11:23:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:23:24,135 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 [2021-12-22 11:23:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:24,138 INFO L225 Difference]: With dead ends: 482 [2021-12-22 11:23:24,138 INFO L226 Difference]: Without dead ends: 283 [2021-12-22 11:23:24,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:23:24,140 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 [2021-12-22 11:23:24,141 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] [2021-12-22 11:23:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-22 11:23:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 275. [2021-12-22 11:23:24,157 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) [2021-12-22 11:23:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 419 transitions. [2021-12-22 11:23:24,160 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 419 transitions. Word has length 97 [2021-12-22 11:23:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:24,160 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 419 transitions. [2021-12-22 11:23:24,160 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) [2021-12-22 11:23:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 419 transitions. [2021-12-22 11:23:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-22 11:23:24,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:24,164 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] [2021-12-22 11:23:24,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 11:23:24,391 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 [2021-12-22 11:23:24,392 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash -681084901, now seen corresponding path program 1 times [2021-12-22 11:23:24,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:24,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143820401] [2021-12-22 11:23:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:24,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:23:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:23:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:23:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 11:23:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:23:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:23:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:23:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:23:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:23:24,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:24,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143820401] [2021-12-22 11:23:24,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143820401] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:23:24,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238317035] [2021-12-22 11:23:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:24,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:23:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:23:24,513 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) [2021-12-22 11:23:24,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 11:23:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:24,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 11:23:24,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:23:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 11:23:24,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:23:24,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238317035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:24,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:23:24,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-22 11:23:24,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079566864] [2021-12-22 11:23:24,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:24,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:23:24,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:24,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:23:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:23:24,932 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) [2021-12-22 11:23:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:24,983 INFO L93 Difference]: Finished difference Result 541 states and 828 transitions. [2021-12-22 11:23:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:23:24,984 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 [2021-12-22 11:23:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:24,987 INFO L225 Difference]: With dead ends: 541 [2021-12-22 11:23:24,987 INFO L226 Difference]: Without dead ends: 277 [2021-12-22 11:23:24,990 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 [2021-12-22 11:23:24,990 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 [2021-12-22 11:23:24,991 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] [2021-12-22 11:23:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-12-22 11:23:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-12-22 11:23:25,006 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) [2021-12-22 11:23:25,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 422 transitions. [2021-12-22 11:23:25,008 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 422 transitions. Word has length 98 [2021-12-22 11:23:25,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:25,009 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 422 transitions. [2021-12-22 11:23:25,009 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) [2021-12-22 11:23:25,009 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 422 transitions. [2021-12-22 11:23:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-22 11:23:25,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:25,011 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] [2021-12-22 11:23:25,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 11:23:25,228 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 [2021-12-22 11:23:25,228 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash -900581444, now seen corresponding path program 1 times [2021-12-22 11:23:25,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:25,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823110241] [2021-12-22 11:23:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:25,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 11:23:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 11:23:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 11:23:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:23:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:23:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:23:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:23:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 11:23:25,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:25,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823110241] [2021-12-22 11:23:25,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823110241] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:23:25,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763933500] [2021-12-22 11:23:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:25,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:23:25,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:23:25,384 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) [2021-12-22 11:23:25,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 11:23:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:25,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 11:23:25,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:23:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-22 11:23:25,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:23:25,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763933500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:25,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:23:25,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-22 11:23:25,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405286971] [2021-12-22 11:23:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:25,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:23:25,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:23:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:23:25,808 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) [2021-12-22 11:23:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:25,881 INFO L93 Difference]: Finished difference Result 543 states and 833 transitions. [2021-12-22 11:23:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:23:25,882 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 [2021-12-22 11:23:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:25,886 INFO L225 Difference]: With dead ends: 543 [2021-12-22 11:23:25,886 INFO L226 Difference]: Without dead ends: 279 [2021-12-22 11:23:25,888 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 [2021-12-22 11:23:25,890 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 [2021-12-22 11:23:25,890 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] [2021-12-22 11:23:25,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-22 11:23:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-12-22 11:23:25,913 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) [2021-12-22 11:23:25,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 428 transitions. [2021-12-22 11:23:25,917 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 428 transitions. Word has length 99 [2021-12-22 11:23:25,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:25,919 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 428 transitions. [2021-12-22 11:23:25,920 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) [2021-12-22 11:23:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 428 transitions. [2021-12-22 11:23:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-22 11:23:25,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:25,926 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] [2021-12-22 11:23:25,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 11:23:26,139 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 [2021-12-22 11:23:26,140 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2035618973, now seen corresponding path program 1 times [2021-12-22 11:23:26,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:26,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573389201] [2021-12-22 11:23:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:26,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 11:23:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 11:23:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 11:23:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:23:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:23:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:23:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:23:26,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:26,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573389201] [2021-12-22 11:23:26,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573389201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:26,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:26,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:23:26,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947038981] [2021-12-22 11:23:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:26,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:23:26,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:23:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:23:26,264 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) [2021-12-22 11:23:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:27,102 INFO L93 Difference]: Finished difference Result 601 states and 925 transitions. [2021-12-22 11:23:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:23:27,102 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 [2021-12-22 11:23:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:27,107 INFO L225 Difference]: With dead ends: 601 [2021-12-22 11:23:27,107 INFO L226 Difference]: Without dead ends: 345 [2021-12-22 11:23:27,108 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 [2021-12-22 11:23:27,110 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 678 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:27,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 1305 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 11:23:27,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-22 11:23:27,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 279. [2021-12-22 11:23:27,136 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) [2021-12-22 11:23:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 427 transitions. [2021-12-22 11:23:27,138 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 427 transitions. Word has length 100 [2021-12-22 11:23:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:27,139 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 427 transitions. [2021-12-22 11:23:27,139 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) [2021-12-22 11:23:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 427 transitions. [2021-12-22 11:23:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 11:23:27,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:27,141 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] [2021-12-22 11:23:27,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 11:23:27,142 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1299983974, now seen corresponding path program 2 times [2021-12-22 11:23:27,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:27,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214107286] [2021-12-22 11:23:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:27,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 11:23:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:23:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 11:23:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:23:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:23:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:23:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:23:27,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:27,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214107286] [2021-12-22 11:23:27,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214107286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:27,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:27,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:23:27,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524836680] [2021-12-22 11:23:27,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:27,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:23:27,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:23:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:23:27,273 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) [2021-12-22 11:23:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:28,092 INFO L93 Difference]: Finished difference Result 603 states and 928 transitions. [2021-12-22 11:23:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:23:28,093 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 [2021-12-22 11:23:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:28,098 INFO L225 Difference]: With dead ends: 603 [2021-12-22 11:23:28,098 INFO L226 Difference]: Without dead ends: 347 [2021-12-22 11:23:28,099 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 [2021-12-22 11:23:28,100 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 672 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:28,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 1311 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:23:28,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-22 11:23:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-12-22 11:23:28,125 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) [2021-12-22 11:23:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 430 transitions. [2021-12-22 11:23:28,128 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 430 transitions. Word has length 101 [2021-12-22 11:23:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:28,128 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 430 transitions. [2021-12-22 11:23:28,128 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) [2021-12-22 11:23:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 430 transitions. [2021-12-22 11:23:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-22 11:23:28,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:28,131 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] [2021-12-22 11:23:28,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 11:23:28,131 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:28,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1942025310, now seen corresponding path program 1 times [2021-12-22 11:23:28,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:28,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380553941] [2021-12-22 11:23:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:28,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:23:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:23:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:23:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:23:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:23:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 11:23:28,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:28,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380553941] [2021-12-22 11:23:28,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380553941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:28,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:28,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:23:28,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909036124] [2021-12-22 11:23:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:28,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:23:28,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:28,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:23:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:23:28,283 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) [2021-12-22 11:23:29,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:29,517 INFO L93 Difference]: Finished difference Result 601 states and 923 transitions. [2021-12-22 11:23:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:23:29,518 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 [2021-12-22 11:23:29,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:29,520 INFO L225 Difference]: With dead ends: 601 [2021-12-22 11:23:29,521 INFO L226 Difference]: Without dead ends: 347 [2021-12-22 11:23:29,522 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 [2021-12-22 11:23:29,522 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 785 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:29,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1679 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:23:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-22 11:23:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-12-22 11:23:29,541 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) [2021-12-22 11:23:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 429 transitions. [2021-12-22 11:23:29,543 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 429 transitions. Word has length 102 [2021-12-22 11:23:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:29,543 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 429 transitions. [2021-12-22 11:23:29,543 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) [2021-12-22 11:23:29,543 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 429 transitions. [2021-12-22 11:23:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 11:23:29,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:29,545 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] [2021-12-22 11:23:29,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 11:23:29,545 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1612619593, now seen corresponding path program 2 times [2021-12-22 11:23:29,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:29,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640134275] [2021-12-22 11:23:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:29,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:23:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:23:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:23:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:23:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:23:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:29,698 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 11:23:29,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:29,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640134275] [2021-12-22 11:23:29,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640134275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:29,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:29,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:23:29,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124119722] [2021-12-22 11:23:29,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:29,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:23:29,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:23:29,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:23:29,701 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) [2021-12-22 11:23:30,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:30,976 INFO L93 Difference]: Finished difference Result 603 states and 929 transitions. [2021-12-22 11:23:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:23:30,977 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 [2021-12-22 11:23:30,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:30,980 INFO L225 Difference]: With dead ends: 603 [2021-12-22 11:23:30,980 INFO L226 Difference]: Without dead ends: 349 [2021-12-22 11:23:30,998 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 [2021-12-22 11:23:31,001 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 779 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:31,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 1687 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:23:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-22 11:23:31,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 283. [2021-12-22 11:23:31,022 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) [2021-12-22 11:23:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 435 transitions. [2021-12-22 11:23:31,024 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 435 transitions. Word has length 103 [2021-12-22 11:23:31,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:31,025 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 435 transitions. [2021-12-22 11:23:31,026 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) [2021-12-22 11:23:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 435 transitions. [2021-12-22 11:23:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-22 11:23:31,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:31,028 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] [2021-12-22 11:23:31,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 11:23:31,028 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 367097945, now seen corresponding path program 1 times [2021-12-22 11:23:31,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:31,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302623124] [2021-12-22 11:23:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:31,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:23:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:23:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:23:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:23:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:23:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-22 11:23:31,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302623124] [2021-12-22 11:23:31,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302623124] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:23:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386230440] [2021-12-22 11:23:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:31,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:23:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:23:31,173 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) [2021-12-22 11:23:31,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 11:23:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:31,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:23:31,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:23:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:31,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 11:23:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:31,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386230440] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 11:23:31,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 11:23:31,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-22 11:23:31,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817655381] [2021-12-22 11:23:31,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 11:23:31,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 11:23:31,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:31,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 11:23:31,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:23:31,744 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) [2021-12-22 11:23:34,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:34,233 INFO L93 Difference]: Finished difference Result 1282 states and 2157 transitions. [2021-12-22 11:23:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 11:23:34,234 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 [2021-12-22 11:23:34,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:34,240 INFO L225 Difference]: With dead ends: 1282 [2021-12-22 11:23:34,241 INFO L226 Difference]: Without dead ends: 1030 [2021-12-22 11:23:34,242 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 [2021-12-22 11:23:34,243 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 2472 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 3329 mSolverCounterSat, 1045 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 4374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1045 IncrementalHoareTripleChecker+Valid, 3329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:34,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2474 Valid, 3782 Invalid, 4374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1045 Valid, 3329 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 11:23:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2021-12-22 11:23:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 611. [2021-12-22 11:23:34,293 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) [2021-12-22 11:23:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1004 transitions. [2021-12-22 11:23:34,295 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1004 transitions. Word has length 104 [2021-12-22 11:23:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:34,296 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 1004 transitions. [2021-12-22 11:23:34,296 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) [2021-12-22 11:23:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1004 transitions. [2021-12-22 11:23:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-22 11:23:34,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:34,300 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] [2021-12-22 11:23:34,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-22 11:23:34,507 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 [2021-12-22 11:23:34,508 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash -810993489, now seen corresponding path program 1 times [2021-12-22 11:23:34,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:34,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021329886] [2021-12-22 11:23:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:34,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:23:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:23:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:23:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:23:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:23:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:34,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:34,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021329886] [2021-12-22 11:23:34,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021329886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:34,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:34,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:34,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706789377] [2021-12-22 11:23:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:34,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:34,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:34,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:34,642 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) [2021-12-22 11:23:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:35,445 INFO L93 Difference]: Finished difference Result 1518 states and 2560 transitions. [2021-12-22 11:23:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:35,445 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 [2021-12-22 11:23:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:35,452 INFO L225 Difference]: With dead ends: 1518 [2021-12-22 11:23:35,452 INFO L226 Difference]: Without dead ends: 985 [2021-12-22 11:23:35,454 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 [2021-12-22 11:23:35,455 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 669 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:35,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 1116 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:23:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2021-12-22 11:23:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 911. [2021-12-22 11:23:35,544 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) [2021-12-22 11:23:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1527 transitions. [2021-12-22 11:23:35,548 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1527 transitions. Word has length 107 [2021-12-22 11:23:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:35,549 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1527 transitions. [2021-12-22 11:23:35,549 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) [2021-12-22 11:23:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1527 transitions. [2021-12-22 11:23:35,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 11:23:35,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:35,553 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] [2021-12-22 11:23:35,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 11:23:35,553 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:35,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2062729237, now seen corresponding path program 1 times [2021-12-22 11:23:35,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:35,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094735444] [2021-12-22 11:23:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:35,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:23:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:23:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:23:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:23:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:23:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:35,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:35,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094735444] [2021-12-22 11:23:35,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094735444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:35,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:35,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:35,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593550706] [2021-12-22 11:23:35,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:35,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:35,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:35,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:35,660 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) [2021-12-22 11:23:36,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:36,490 INFO L93 Difference]: Finished difference Result 2258 states and 3840 transitions. [2021-12-22 11:23:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:36,491 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 [2021-12-22 11:23:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:36,499 INFO L225 Difference]: With dead ends: 2258 [2021-12-22 11:23:36,499 INFO L226 Difference]: Without dead ends: 1478 [2021-12-22 11:23:36,502 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 [2021-12-22 11:23:36,503 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 665 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:36,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1081 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:23:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-12-22 11:23:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1404. [2021-12-22 11:23:36,597 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) [2021-12-22 11:23:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2359 transitions. [2021-12-22 11:23:36,603 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2359 transitions. Word has length 108 [2021-12-22 11:23:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:36,603 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 2359 transitions. [2021-12-22 11:23:36,603 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) [2021-12-22 11:23:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2359 transitions. [2021-12-22 11:23:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-22 11:23:36,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:36,609 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] [2021-12-22 11:23:36,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 11:23:36,609 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1726810685, now seen corresponding path program 1 times [2021-12-22 11:23:36,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:36,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153066930] [2021-12-22 11:23:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:36,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:23:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:23:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:23:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:23:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:23:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:36,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:36,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153066930] [2021-12-22 11:23:36,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153066930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:36,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:36,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:36,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210980005] [2021-12-22 11:23:36,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:36,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:36,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:36,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:36,730 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) [2021-12-22 11:23:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:37,541 INFO L93 Difference]: Finished difference Result 3360 states and 5758 transitions. [2021-12-22 11:23:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:37,542 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 [2021-12-22 11:23:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:37,556 INFO L225 Difference]: With dead ends: 3360 [2021-12-22 11:23:37,557 INFO L226 Difference]: Without dead ends: 2222 [2021-12-22 11:23:37,561 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 [2021-12-22 11:23:37,562 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 666 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:37,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1081 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:23:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-12-22 11:23:37,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2148. [2021-12-22 11:23:37,710 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) [2021-12-22 11:23:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3624 transitions. [2021-12-22 11:23:37,719 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3624 transitions. Word has length 109 [2021-12-22 11:23:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:37,719 INFO L470 AbstractCegarLoop]: Abstraction has 2148 states and 3624 transitions. [2021-12-22 11:23:37,719 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) [2021-12-22 11:23:37,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3624 transitions. [2021-12-22 11:23:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 11:23:37,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:37,728 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] [2021-12-22 11:23:37,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 11:23:37,728 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:37,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2113108746, now seen corresponding path program 1 times [2021-12-22 11:23:37,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:37,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925809590] [2021-12-22 11:23:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:37,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:23:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:23:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:23:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:23:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:23:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:37,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925809590] [2021-12-22 11:23:37,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925809590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:37,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:37,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:37,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863946582] [2021-12-22 11:23:37,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:37,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:37,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:37,828 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) [2021-12-22 11:23:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:38,785 INFO L93 Difference]: Finished difference Result 5069 states and 8738 transitions. [2021-12-22 11:23:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:38,786 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 [2021-12-22 11:23:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:38,805 INFO L225 Difference]: With dead ends: 5069 [2021-12-22 11:23:38,805 INFO L226 Difference]: Without dead ends: 3406 [2021-12-22 11:23:38,812 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 [2021-12-22 11:23:38,813 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 661 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:38,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 1089 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 11:23:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2021-12-22 11:23:39,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3332. [2021-12-22 11:23:39,068 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) [2021-12-22 11:23:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 5630 transitions. [2021-12-22 11:23:39,080 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 5630 transitions. Word has length 110 [2021-12-22 11:23:39,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:39,080 INFO L470 AbstractCegarLoop]: Abstraction has 3332 states and 5630 transitions. [2021-12-22 11:23:39,080 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) [2021-12-22 11:23:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 5630 transitions. [2021-12-22 11:23:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-22 11:23:39,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:39,087 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] [2021-12-22 11:23:39,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 11:23:39,088 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:39,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1350938745, now seen corresponding path program 1 times [2021-12-22 11:23:39,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:39,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373027924] [2021-12-22 11:23:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:39,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 11:23:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:23:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:23:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:23:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:23:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:39,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:39,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373027924] [2021-12-22 11:23:39,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373027924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:39,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:39,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:39,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900549347] [2021-12-22 11:23:39,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:39,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:39,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:39,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:39,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:39,182 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) [2021-12-22 11:23:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:40,111 INFO L93 Difference]: Finished difference Result 8142 states and 14054 transitions. [2021-12-22 11:23:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:40,112 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 [2021-12-22 11:23:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:40,141 INFO L225 Difference]: With dead ends: 8142 [2021-12-22 11:23:40,142 INFO L226 Difference]: Without dead ends: 5547 [2021-12-22 11:23:40,153 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 [2021-12-22 11:23:40,154 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 661 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:40,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 1125 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:23:40,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-12-22 11:23:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5473. [2021-12-22 11:23:40,588 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) [2021-12-22 11:23:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 9232 transitions. [2021-12-22 11:23:40,606 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 9232 transitions. Word has length 111 [2021-12-22 11:23:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:40,607 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 9232 transitions. [2021-12-22 11:23:40,607 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) [2021-12-22 11:23:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 9232 transitions. [2021-12-22 11:23:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 11:23:40,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:40,617 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] [2021-12-22 11:23:40,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 11:23:40,618 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1613475142, now seen corresponding path program 1 times [2021-12-22 11:23:40,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:40,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880101401] [2021-12-22 11:23:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:40,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:23:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:23:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:23:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:23:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 11:23:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:40,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:40,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880101401] [2021-12-22 11:23:40,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880101401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:40,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:40,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:40,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432370418] [2021-12-22 11:23:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:40,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:40,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:40,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:40,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:40,720 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) [2021-12-22 11:23:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:41,771 INFO L93 Difference]: Finished difference Result 13564 states and 23355 transitions. [2021-12-22 11:23:41,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:41,780 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 [2021-12-22 11:23:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:41,831 INFO L225 Difference]: With dead ends: 13564 [2021-12-22 11:23:41,831 INFO L226 Difference]: Without dead ends: 9230 [2021-12-22 11:23:41,848 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 [2021-12-22 11:23:41,848 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 660 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:41,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [676 Valid, 1079 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 11:23:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9230 states. [2021-12-22 11:23:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9230 to 9156. [2021-12-22 11:23:42,535 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) [2021-12-22 11:23:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9156 states to 9156 states and 15429 transitions. [2021-12-22 11:23:42,563 INFO L78 Accepts]: Start accepts. Automaton has 9156 states and 15429 transitions. Word has length 112 [2021-12-22 11:23:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:42,563 INFO L470 AbstractCegarLoop]: Abstraction has 9156 states and 15429 transitions. [2021-12-22 11:23:42,564 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) [2021-12-22 11:23:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9156 states and 15429 transitions. [2021-12-22 11:23:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-22 11:23:42,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:42,577 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] [2021-12-22 11:23:42,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 11:23:42,577 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash 386562555, now seen corresponding path program 1 times [2021-12-22 11:23:42,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:42,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416496136] [2021-12-22 11:23:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:42,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:23:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:23:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:23:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:23:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:23:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:42,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:42,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416496136] [2021-12-22 11:23:42,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416496136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:42,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:42,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:42,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323990785] [2021-12-22 11:23:42,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:42,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:42,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:42,677 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) [2021-12-22 11:23:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:44,093 INFO L93 Difference]: Finished difference Result 23748 states and 40796 transitions. [2021-12-22 11:23:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:44,094 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 [2021-12-22 11:23:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:44,159 INFO L225 Difference]: With dead ends: 23748 [2021-12-22 11:23:44,159 INFO L226 Difference]: Without dead ends: 16183 [2021-12-22 11:23:44,189 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 [2021-12-22 11:23:44,190 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 656 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:44,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 1126 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:23:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16183 states. [2021-12-22 11:23:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16183 to 16109. [2021-12-22 11:23:45,363 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) [2021-12-22 11:23:45,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16109 states to 16109 states and 27049 transitions. [2021-12-22 11:23:45,416 INFO L78 Accepts]: Start accepts. Automaton has 16109 states and 27049 transitions. Word has length 113 [2021-12-22 11:23:45,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:45,416 INFO L470 AbstractCegarLoop]: Abstraction has 16109 states and 27049 transitions. [2021-12-22 11:23:45,416 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) [2021-12-22 11:23:45,416 INFO L276 IsEmpty]: Start isEmpty. Operand 16109 states and 27049 transitions. [2021-12-22 11:23:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-22 11:23:45,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:45,436 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] [2021-12-22 11:23:45,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 11:23:45,436 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:45,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1247882437, now seen corresponding path program 1 times [2021-12-22 11:23:45,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:45,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113031288] [2021-12-22 11:23:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:45,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:23:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:23:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:23:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:23:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:23:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:45,524 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:45,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:45,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113031288] [2021-12-22 11:23:45,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113031288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:45,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:45,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:45,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143276537] [2021-12-22 11:23:45,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:45,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:45,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:45,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:45,527 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) [2021-12-22 11:23:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:47,572 INFO L93 Difference]: Finished difference Result 42714 states and 73193 transitions. [2021-12-22 11:23:47,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:47,572 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 [2021-12-22 11:23:47,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:47,700 INFO L225 Difference]: With dead ends: 42714 [2021-12-22 11:23:47,700 INFO L226 Difference]: Without dead ends: 28838 [2021-12-22 11:23:47,738 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 [2021-12-22 11:23:47,739 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 653 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:47,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1093 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:23:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28838 states. [2021-12-22 11:23:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28838 to 28764. [2021-12-22 11:23:49,317 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) [2021-12-22 11:23:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28764 states to 28764 states and 48168 transitions. [2021-12-22 11:23:49,430 INFO L78 Accepts]: Start accepts. Automaton has 28764 states and 48168 transitions. Word has length 114 [2021-12-22 11:23:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:49,430 INFO L470 AbstractCegarLoop]: Abstraction has 28764 states and 48168 transitions. [2021-12-22 11:23:49,430 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) [2021-12-22 11:23:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 28764 states and 48168 transitions. [2021-12-22 11:23:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-22 11:23:49,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:49,451 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] [2021-12-22 11:23:49,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 11:23:49,451 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1042607139, now seen corresponding path program 1 times [2021-12-22 11:23:49,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:49,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792484287] [2021-12-22 11:23:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:49,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:23:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:23:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:23:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:23:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:23:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:49,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:49,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792484287] [2021-12-22 11:23:49,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792484287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:49,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:49,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:49,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185729752] [2021-12-22 11:23:49,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:49,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:49,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:49,821 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) [2021-12-22 11:23:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:23:52,739 INFO L93 Difference]: Finished difference Result 78476 states and 133557 transitions. [2021-12-22 11:23:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:23:52,739 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 [2021-12-22 11:23:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:23:52,965 INFO L225 Difference]: With dead ends: 78476 [2021-12-22 11:23:52,965 INFO L226 Difference]: Without dead ends: 52717 [2021-12-22 11:23:53,049 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 [2021-12-22 11:23:53,049 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 652 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:23:53,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1078 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:23:53,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52717 states. [2021-12-22 11:23:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52717 to 52643. [2021-12-22 11:23:56,268 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) [2021-12-22 11:23:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52643 states to 52643 states and 87833 transitions. [2021-12-22 11:23:56,474 INFO L78 Accepts]: Start accepts. Automaton has 52643 states and 87833 transitions. Word has length 115 [2021-12-22 11:23:56,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:23:56,475 INFO L470 AbstractCegarLoop]: Abstraction has 52643 states and 87833 transitions. [2021-12-22 11:23:56,475 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) [2021-12-22 11:23:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 52643 states and 87833 transitions. [2021-12-22 11:23:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-22 11:23:56,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:23:56,496 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] [2021-12-22 11:23:56,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 11:23:56,497 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:23:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:23:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash 374275547, now seen corresponding path program 1 times [2021-12-22 11:23:56,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:23:56,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173411645] [2021-12-22 11:23:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:23:56,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:23:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:23:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:23:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:23:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:23:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:23:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:23:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:23:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:23:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:23:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:23:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:23:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:23:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 11:23:56,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:23:56,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173411645] [2021-12-22 11:23:56,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173411645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:23:56,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:23:56,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:23:56,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467518725] [2021-12-22 11:23:56,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:23:56,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:23:56,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:23:56,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:23:56,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:23:56,590 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) [2021-12-22 11:24:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:01,339 INFO L93 Difference]: Finished difference Result 98247 states and 167487 transitions. [2021-12-22 11:24:01,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:01,340 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 [2021-12-22 11:24:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:01,715 INFO L225 Difference]: With dead ends: 98247 [2021-12-22 11:24:01,715 INFO L226 Difference]: Without dead ends: 98176 [2021-12-22 11:24:01,770 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 [2021-12-22 11:24:01,770 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 650 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:01,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1084 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 11:24:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98176 states. [2021-12-22 11:24:06,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98176 to 98102. [2021-12-22 11:24:07,037 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) [2021-12-22 11:24:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98102 states to 98102 states and 162924 transitions. [2021-12-22 11:24:07,518 INFO L78 Accepts]: Start accepts. Automaton has 98102 states and 162924 transitions. Word has length 116 [2021-12-22 11:24:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:07,518 INFO L470 AbstractCegarLoop]: Abstraction has 98102 states and 162924 transitions. [2021-12-22 11:24:07,518 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) [2021-12-22 11:24:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 98102 states and 162924 transitions. [2021-12-22 11:24:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-22 11:24:07,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:07,548 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] [2021-12-22 11:24:07,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 11:24:07,548 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 974880476, now seen corresponding path program 1 times [2021-12-22 11:24:07,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:07,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794618609] [2021-12-22 11:24:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:07,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:24:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:24:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:24:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:24:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:24:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-22 11:24:07,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:07,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794618609] [2021-12-22 11:24:07,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794618609] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:24:07,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323582659] [2021-12-22 11:24:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:07,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:24:07,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:07,818 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) [2021-12-22 11:24:07,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 11:24:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:08,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-22 11:24:08,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:24:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-22 11:24:08,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:24:08,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323582659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:08,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:24:08,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2021-12-22 11:24:08,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778505128] [2021-12-22 11:24:08,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:08,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:24:08,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:08,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:24:08,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2021-12-22 11:24:08,420 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)