./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y --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 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:22:58,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:22:58,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:22:58,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:22:58,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:22:58,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:22:58,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:22:58,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:22:58,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:22:58,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:22:58,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:22:58,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:22:58,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:22:58,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:22:58,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:22:58,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:22:58,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:22:58,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:22:58,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:22:58,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:22:58,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:22:58,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:22:58,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:22:58,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:22:58,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:22:58,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:22:58,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:22:58,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:22:58,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:22:58,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:22:58,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:22:58,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:22:58,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:22:58,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:22:58,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:22:58,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:22:58,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:22:58,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:22:58,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:22:58,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:22:58,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:22:58,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:22:58,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:22:58,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:22:58,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:22:58,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:22:58,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:22:58,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:22:58,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:22:58,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:22:58,837 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:22:58,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:22:58,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:22:58,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:22:58,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:22:58,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:22:58,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:22:58,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:22:58,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:22:58,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:22:58,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:22:58,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:22:58,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:22:58,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:22:58,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:22:58,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:22:58,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:22:58,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:22:58,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:22:58,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:22:58,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:22:58,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:22:58,844 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:22:58,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:22:58,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:22:58,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:22:58,846 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23422b93e8eb894b39d133f7e6eb45372f0db0df72df3fa3f3890b8e90f2fd0e [2021-11-13 18:22:59,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:22:59,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:22:59,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:22:59,252 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:22:59,253 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:22:59,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2021-11-13 18:22:59,341 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/data/df9184c01/26e83cae83664c6e8f6144a8d6ca0925/FLAG595e9bfa5 [2021-11-13 18:23:00,155 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:23:00,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c [2021-11-13 18:23:00,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/data/df9184c01/26e83cae83664c6e8f6144a8d6ca0925/FLAG595e9bfa5 [2021-11-13 18:23:00,331 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/data/df9184c01/26e83cae83664c6e8f6144a8d6ca0925 [2021-11-13 18:23:00,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:23:00,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:23:00,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:23:00,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:23:00,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:23:00,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:23:00" (1/1) ... [2021-11-13 18:23:00,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d82723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:00, skipping insertion in model container [2021-11-13 18:23:00,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:23:00" (1/1) ... [2021-11-13 18:23:00,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:23:00,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:23:01,122 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2021-11-13 18:23:01,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:23:01,153 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:23:01,300 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/sv-benchmarks/c/product-lines/email_spec1_product32.cil.c[65472,65485] [2021-11-13 18:23:01,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:23:01,341 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:23:01,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01 WrapperNode [2021-11-13 18:23:01,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:23:01,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:23:01,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:23:01,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:23:01,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:23:01,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:23:01,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:23:01,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:23:01,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:23:01,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:23:01,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:23:01,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:23:01,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (1/1) ... [2021-11-13 18:23:01,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:23:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:01,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:23:01,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:23:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-13 18:23:01,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-13 18:23:01,769 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-13 18:23:01,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-13 18:23:01,770 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-13 18:23:01,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-13 18:23:01,770 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-13 18:23:01,773 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-13 18:23:01,773 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-13 18:23:01,774 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-13 18:23:01,774 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-13 18:23:01,776 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-13 18:23:01,776 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-11-13 18:23:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-11-13 18:23:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-13 18:23:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-13 18:23:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-13 18:23:01,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-13 18:23:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-13 18:23:01,779 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-13 18:23:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-13 18:23:01,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-13 18:23:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-13 18:23:01,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-13 18:23:01,780 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-13 18:23:01,780 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-13 18:23:01,780 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-13 18:23:01,780 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-13 18:23:01,780 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-13 18:23:01,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-13 18:23:01,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-13 18:23:01,781 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-13 18:23:01,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-13 18:23:01,781 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-13 18:23:01,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-13 18:23:01,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:23:01,782 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-13 18:23:01,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-13 18:23:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-13 18:23:01,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-13 18:23:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-13 18:23:01,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-13 18:23:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-13 18:23:01,784 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-13 18:23:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-13 18:23:01,784 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-13 18:23:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-13 18:23:01,785 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-13 18:23:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-13 18:23:01,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-13 18:23:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-13 18:23:01,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-13 18:23:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-13 18:23:01,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-13 18:23:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:23:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-13 18:23:01,789 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-13 18:23:01,790 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-13 18:23:01,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-13 18:23:01,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:23:01,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:23:04,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:23:04,218 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:23:04,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:23:04 BoogieIcfgContainer [2021-11-13 18:23:04,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:23:04,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:23:04,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:23:04,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:23:04,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:23:00" (1/3) ... [2021-11-13 18:23:04,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6511aa23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:23:04, skipping insertion in model container [2021-11-13 18:23:04,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:23:01" (2/3) ... [2021-11-13 18:23:04,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6511aa23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:23:04, skipping insertion in model container [2021-11-13 18:23:04,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:23:04" (3/3) ... [2021-11-13 18:23:04,241 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product32.cil.c [2021-11-13 18:23:04,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:23:04,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:23:04,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:23:04,353 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 [2021-11-13 18:23:04,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:23:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 425 states, 330 states have (on average 1.5515151515151515) internal successors, (512), 335 states have internal predecessors, (512), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-11-13 18:23:04,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-13 18:23:04,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:04,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:04,465 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1920042768, now seen corresponding path program 1 times [2021-11-13 18:23:04,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:04,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877852453] [2021-11-13 18:23:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:04,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 18:23:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:23:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:23:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:23:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:23:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 18:23:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:23:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:23:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:23:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:23:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:23:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-13 18:23:05,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:05,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877852453] [2021-11-13 18:23:05,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877852453] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:05,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678260515] [2021-11-13 18:23:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:05,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:05,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:05,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:05,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:23:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:05,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:23:05,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-13 18:23:06,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:06,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678260515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:06,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:23:06,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-11-13 18:23:06,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287109831] [2021-11-13 18:23:06,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:06,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:23:06,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:06,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:23:06,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:23:06,347 INFO L87 Difference]: Start difference. First operand has 425 states, 330 states have (on average 1.5515151515151515) internal successors, (512), 335 states have internal predecessors, (512), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:06,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:06,492 INFO L93 Difference]: Finished difference Result 657 states and 974 transitions. [2021-11-13 18:23:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:23:06,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2021-11-13 18:23:06,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:06,538 INFO L225 Difference]: With dead ends: 657 [2021-11-13 18:23:06,538 INFO L226 Difference]: Without dead ends: 418 [2021-11-13 18:23:06,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:23:06,551 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:06,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 12.14ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:23:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-13 18:23:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-11-13 18:23:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 324 states have (on average 1.5462962962962963) internal successors, (501), 328 states have internal predecessors, (501), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-13 18:23:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 630 transitions. [2021-11-13 18:23:06,648 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 630 transitions. Word has length 110 [2021-11-13 18:23:06,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:06,650 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 630 transitions. [2021-11-13 18:23:06,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 630 transitions. [2021-11-13 18:23:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-13 18:23:06,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:06,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:06,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 18:23:06,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-13 18:23:06,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1988702151, now seen corresponding path program 1 times [2021-11-13 18:23:06,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:06,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299222608] [2021-11-13 18:23:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:06,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 18:23:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:23:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:23:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:23:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 18:23:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:23:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 18:23:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 18:23:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 18:23:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:23:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:23:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-13 18:23:07,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:07,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299222608] [2021-11-13 18:23:07,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299222608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:07,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787821116] [2021-11-13 18:23:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:07,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:07,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:07,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:07,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:23:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:07,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:23:07,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-13 18:23:08,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:08,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787821116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:08,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:23:08,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-13 18:23:08,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838642392] [2021-11-13 18:23:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:08,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:23:08,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:23:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:23:08,013 INFO L87 Difference]: Start difference. First operand 418 states and 630 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:08,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:08,059 INFO L93 Difference]: Finished difference Result 647 states and 952 transitions. [2021-11-13 18:23:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:23:08,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2021-11-13 18:23:08,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:08,066 INFO L225 Difference]: With dead ends: 647 [2021-11-13 18:23:08,066 INFO L226 Difference]: Without dead ends: 421 [2021-11-13 18:23:08,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:23:08,070 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 1 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:08,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1254 Invalid, 5 Unknown, 0 Unchecked, 7.97ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 5.69ms Time] [2021-11-13 18:23:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-13 18:23:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 420. [2021-11-13 18:23:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 326 states have (on average 1.5429447852760736) internal successors, (503), 330 states have internal predecessors, (503), 65 states have call successors, (65), 28 states have call predecessors, (65), 28 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-13 18:23:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 632 transitions. [2021-11-13 18:23:08,117 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 632 transitions. Word has length 111 [2021-11-13 18:23:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:08,118 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 632 transitions. [2021-11-13 18:23:08,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:08,118 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 632 transitions. [2021-11-13 18:23:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 18:23:08,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:08,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:08,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:08,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-13 18:23:08,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:08,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1245902075, now seen corresponding path program 1 times [2021-11-13 18:23:08,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:08,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461758816] [2021-11-13 18:23:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:08,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 18:23:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:23:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:23:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 18:23:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:23:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 18:23:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 18:23:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:23:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:23:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 18:23:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 18:23:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:23:08,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:08,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461758816] [2021-11-13 18:23:08,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461758816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:08,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881211211] [2021-11-13 18:23:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:08,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:08,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:08,695 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:08,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:23:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:09,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:23:09,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-13 18:23:09,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:09,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881211211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:09,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:23:09,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-13 18:23:09,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499853395] [2021-11-13 18:23:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:09,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:23:09,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:09,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:23:09,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:23:09,429 INFO L87 Difference]: Start difference. First operand 420 states and 632 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:09,519 INFO L93 Difference]: Finished difference Result 888 states and 1356 transitions. [2021-11-13 18:23:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:23:09,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2021-11-13 18:23:09,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:09,532 INFO L225 Difference]: With dead ends: 888 [2021-11-13 18:23:09,532 INFO L226 Difference]: Without dead ends: 495 [2021-11-13 18:23:09,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:23:09,535 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 134 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:09,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 1238 Invalid, 4 Unknown, 0 Unchecked, 21.51ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 4.72ms Time] [2021-11-13 18:23:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-13 18:23:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 487. [2021-11-13 18:23:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 379 states have (on average 1.562005277044855) internal successors, (592), 383 states have internal predecessors, (592), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (78), 77 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-13 18:23:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 749 transitions. [2021-11-13 18:23:09,578 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 749 transitions. Word has length 120 [2021-11-13 18:23:09,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:09,579 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 749 transitions. [2021-11-13 18:23:09,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 749 transitions. [2021-11-13 18:23:09,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 18:23:09,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:09,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:09,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:09,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:09,803 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash -625115686, now seen corresponding path program 1 times [2021-11-13 18:23:09,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:09,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123039514] [2021-11-13 18:23:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:09,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 18:23:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:09,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:23:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 18:23:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:23:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 18:23:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:23:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:23:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:23:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:23:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-13 18:23:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 18:23:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:23:10,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:10,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123039514] [2021-11-13 18:23:10,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123039514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:10,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910699327] [2021-11-13 18:23:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:10,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:10,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:10,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:23:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:10,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:23:10,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 18:23:10,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:10,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910699327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:10,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:23:10,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-11-13 18:23:10,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303946968] [2021-11-13 18:23:10,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:10,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:23:10,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:10,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:23:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:23:10,977 INFO L87 Difference]: Start difference. First operand 487 states and 749 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:23:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:11,133 INFO L93 Difference]: Finished difference Result 965 states and 1488 transitions. [2021-11-13 18:23:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:23:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2021-11-13 18:23:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:11,141 INFO L225 Difference]: With dead ends: 965 [2021-11-13 18:23:11,142 INFO L226 Difference]: Without dead ends: 489 [2021-11-13 18:23:11,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:11,147 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 152 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.07ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:11,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 2310 Invalid, 34 Unknown, 0 Unchecked, 26.57ms Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 40.07ms Time] [2021-11-13 18:23:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-13 18:23:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2021-11-13 18:23:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 380 states have (on average 1.5605263157894738) internal successors, (593), 385 states have internal predecessors, (593), 79 states have call successors, (79), 28 states have call predecessors, (79), 29 states have return successors, (80), 77 states have call predecessors, (80), 78 states have call successors, (80) [2021-11-13 18:23:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 752 transitions. [2021-11-13 18:23:11,182 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 752 transitions. Word has length 121 [2021-11-13 18:23:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:11,183 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 752 transitions. [2021-11-13 18:23:11,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:23:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 752 transitions. [2021-11-13 18:23:11,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 18:23:11,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:11,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:11,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:11,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:11,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:11,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:11,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1495995839, now seen corresponding path program 1 times [2021-11-13 18:23:11,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:11,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181448461] [2021-11-13 18:23:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:11,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 18:23:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-13 18:23:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 18:23:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:23:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:23:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-13 18:23:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:23:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:23:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:23:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:23:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 18:23:11,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:11,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181448461] [2021-11-13 18:23:11,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181448461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:11,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343245954] [2021-11-13 18:23:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:11,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:11,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:11,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:11,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:23:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:12,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:23:12,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 18:23:12,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:12,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343245954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:12,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:23:12,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-11-13 18:23:12,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861710166] [2021-11-13 18:23:12,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:12,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:23:12,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:23:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:23:12,455 INFO L87 Difference]: Start difference. First operand 489 states and 752 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:23:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:12,569 INFO L93 Difference]: Finished difference Result 967 states and 1493 transitions. [2021-11-13 18:23:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:23:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2021-11-13 18:23:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:12,577 INFO L225 Difference]: With dead ends: 967 [2021-11-13 18:23:12,578 INFO L226 Difference]: Without dead ends: 491 [2021-11-13 18:23:12,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:23:12,583 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 151 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:12,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 2299 Invalid, 45 Unknown, 0 Unchecked, 8.41ms Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 47.71ms Time] [2021-11-13 18:23:12,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-13 18:23:12,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2021-11-13 18:23:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 381 states have (on average 1.5590551181102361) internal successors, (594), 387 states have internal predecessors, (594), 79 states have call successors, (79), 28 states have call predecessors, (79), 30 states have return successors, (85), 77 states have call predecessors, (85), 78 states have call successors, (85) [2021-11-13 18:23:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 758 transitions. [2021-11-13 18:23:12,640 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 758 transitions. Word has length 122 [2021-11-13 18:23:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:12,645 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 758 transitions. [2021-11-13 18:23:12,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:23:12,646 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 758 transitions. [2021-11-13 18:23:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 18:23:12,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:12,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:12,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:12,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:12,868 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash -20354496, now seen corresponding path program 1 times [2021-11-13 18:23:12,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:12,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104867953] [2021-11-13 18:23:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:12,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:23:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:23:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 18:23:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:23:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:23:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:23:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 18:23:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 18:23:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 18:23:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-13 18:23:13,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:13,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104867953] [2021-11-13 18:23:13,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104867953] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:13,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966411558] [2021-11-13 18:23:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:13,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:13,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:13,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:13,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:23:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:13,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:23:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 18:23:13,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:13,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966411558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:13,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:23:13,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-13 18:23:13,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184109179] [2021-11-13 18:23:13,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:13,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:23:13,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:23:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:23:13,930 INFO L87 Difference]: Start difference. First operand 491 states and 758 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:23:14,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:14,029 INFO L93 Difference]: Finished difference Result 959 states and 1484 transitions. [2021-11-13 18:23:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:23:14,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2021-11-13 18:23:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:14,035 INFO L225 Difference]: With dead ends: 959 [2021-11-13 18:23:14,035 INFO L226 Difference]: Without dead ends: 491 [2021-11-13 18:23:14,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:23:14,039 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 150 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.79ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:14,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 2313 Invalid, 35 Unknown, 0 Unchecked, 7.77ms Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 35.79ms Time] [2021-11-13 18:23:14,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-13 18:23:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2021-11-13 18:23:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 381 states have (on average 1.5590551181102361) internal successors, (594), 387 states have internal predecessors, (594), 79 states have call successors, (79), 28 states have call predecessors, (79), 30 states have return successors, (84), 77 states have call predecessors, (84), 78 states have call successors, (84) [2021-11-13 18:23:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 757 transitions. [2021-11-13 18:23:14,075 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 757 transitions. Word has length 123 [2021-11-13 18:23:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:14,076 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 757 transitions. [2021-11-13 18:23:14,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:23:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 757 transitions. [2021-11-13 18:23:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-13 18:23:14,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:14,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:14,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:14,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 18:23:14,306 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2021439229, now seen corresponding path program 2 times [2021-11-13 18:23:14,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:14,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127937703] [2021-11-13 18:23:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:14,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:23:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 18:23:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:23:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 18:23:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 18:23:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:23:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:23:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 18:23:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:23:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 18:23:14,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:14,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127937703] [2021-11-13 18:23:14,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127937703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:14,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:14,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 18:23:14,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986597122] [2021-11-13 18:23:14,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:14,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:23:14,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:14,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:23:14,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:14,574 INFO L87 Difference]: Start difference. First operand 491 states and 757 transitions. Second operand has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:23:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:19,249 INFO L93 Difference]: Finished difference Result 1110 states and 1731 transitions. [2021-11-13 18:23:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:23:19,250 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 5 states have call successors, (14) Word has length 124 [2021-11-13 18:23:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:19,263 INFO L225 Difference]: With dead ends: 1110 [2021-11-13 18:23:19,264 INFO L226 Difference]: Without dead ends: 630 [2021-11-13 18:23:19,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-11-13 18:23:19,269 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 1841 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3471.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.86ms SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4135.33ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:19,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 2610 Invalid, 4853 Unknown, 0 Unchecked, 61.86ms Time], IncrementalHoareTripleChecker [657 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 4135.33ms Time] [2021-11-13 18:23:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-11-13 18:23:19,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 496. [2021-11-13 18:23:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 385 states have (on average 1.5532467532467533) internal successors, (598), 391 states have internal predecessors, (598), 79 states have call successors, (79), 29 states have call predecessors, (79), 31 states have return successors, (85), 77 states have call predecessors, (85), 78 states have call successors, (85) [2021-11-13 18:23:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 762 transitions. [2021-11-13 18:23:19,346 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 762 transitions. Word has length 124 [2021-11-13 18:23:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:19,346 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 762 transitions. [2021-11-13 18:23:19,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 5 states have call successors, (14) [2021-11-13 18:23:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 762 transitions. [2021-11-13 18:23:19,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-13 18:23:19,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:19,351 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:19,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:23:19,352 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 875130402, now seen corresponding path program 3 times [2021-11-13 18:23:19,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:19,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663014070] [2021-11-13 18:23:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:19,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:23:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:23:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 18:23:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:23:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:23:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:23:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 18:23:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:23:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 18:23:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 18:23:19,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:19,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663014070] [2021-11-13 18:23:19,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663014070] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:19,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292917599] [2021-11-13 18:23:19,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:23:19,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:19,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:19,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:19,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:23:20,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:23:20,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:23:20,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:23:20,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-13 18:23:20,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:23:20,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292917599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:20,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:23:20,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-13 18:23:20,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194809694] [2021-11-13 18:23:20,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:20,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:23:20,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:20,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:23:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:23:20,625 INFO L87 Difference]: Start difference. First operand 496 states and 762 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:23:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:20,752 INFO L93 Difference]: Finished difference Result 964 states and 1491 transitions. [2021-11-13 18:23:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:23:20,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2021-11-13 18:23:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:20,759 INFO L225 Difference]: With dead ends: 964 [2021-11-13 18:23:20,759 INFO L226 Difference]: Without dead ends: 498 [2021-11-13 18:23:20,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:23:20,763 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 148 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.73ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:20,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 2302 Invalid, 46 Unknown, 0 Unchecked, 8.06ms Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 45.73ms Time] [2021-11-13 18:23:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-11-13 18:23:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2021-11-13 18:23:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 386 states have (on average 1.5518134715025906) internal successors, (599), 393 states have internal predecessors, (599), 79 states have call successors, (79), 29 states have call predecessors, (79), 32 states have return successors, (90), 77 states have call predecessors, (90), 78 states have call successors, (90) [2021-11-13 18:23:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 768 transitions. [2021-11-13 18:23:20,815 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 768 transitions. Word has length 125 [2021-11-13 18:23:20,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:20,816 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 768 transitions. [2021-11-13 18:23:20,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-13 18:23:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 768 transitions. [2021-11-13 18:23:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-13 18:23:20,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:20,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:20,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:23:21,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:21,046 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:21,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1639132584, now seen corresponding path program 1 times [2021-11-13 18:23:21,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:21,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847510699] [2021-11-13 18:23:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:21,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:23:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 18:23:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:23:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 18:23:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 18:23:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:23:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:23:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 18:23:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-13 18:23:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 18:23:21,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:21,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847510699] [2021-11-13 18:23:21,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847510699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:21,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:21,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 18:23:21,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974641734] [2021-11-13 18:23:21,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:21,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:23:21,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:21,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:23:21,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:23:21,307 INFO L87 Difference]: Start difference. First operand 498 states and 768 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 18:23:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:25,575 INFO L93 Difference]: Finished difference Result 1102 states and 1722 transitions. [2021-11-13 18:23:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:23:25,575 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 126 [2021-11-13 18:23:25,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:25,581 INFO L225 Difference]: With dead ends: 1102 [2021-11-13 18:23:25,581 INFO L226 Difference]: Without dead ends: 632 [2021-11-13 18:23:25,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:23:25,585 INFO L933 BasicCegarLoop]: 675 mSDtfsCounter, 1554 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3184.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.78ms SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3774.20ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:25,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 2671 Invalid, 4285 Unknown, 0 Unchecked, 52.78ms Time], IncrementalHoareTripleChecker [586 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 3774.20ms Time] [2021-11-13 18:23:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-13 18:23:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 498. [2021-11-13 18:23:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 386 states have (on average 1.5518134715025906) internal successors, (599), 393 states have internal predecessors, (599), 79 states have call successors, (79), 29 states have call predecessors, (79), 32 states have return successors, (89), 77 states have call predecessors, (89), 78 states have call successors, (89) [2021-11-13 18:23:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 767 transitions. [2021-11-13 18:23:25,629 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 767 transitions. Word has length 126 [2021-11-13 18:23:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:25,630 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 767 transitions. [2021-11-13 18:23:25,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 18:23:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 767 transitions. [2021-11-13 18:23:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-13 18:23:25,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:25,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:25,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:23:25,634 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash 913432522, now seen corresponding path program 1 times [2021-11-13 18:23:25,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:25,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934025584] [2021-11-13 18:23:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:25,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:23:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:23:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:23:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:23:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:23:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:23:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 18:23:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 18:23:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 18:23:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 18:23:25,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:25,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934025584] [2021-11-13 18:23:25,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934025584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:23:25,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106357235] [2021-11-13 18:23:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:25,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:23:25,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:23:25,869 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:23:25,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:23:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:26,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:23:26,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:23:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:26,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:23:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:26,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106357235] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:23:26,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:23:26,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-11-13 18:23:26,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102277841] [2021-11-13 18:23:26,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:23:26,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:23:26,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:26,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:23:26,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:23:26,912 INFO L87 Difference]: Start difference. First operand 498 states and 767 transitions. Second operand has 15 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-13 18:23:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:33,526 INFO L93 Difference]: Finished difference Result 1957 states and 3272 transitions. [2021-11-13 18:23:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 18:23:33,527 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 127 [2021-11-13 18:23:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:33,543 INFO L225 Difference]: With dead ends: 1957 [2021-11-13 18:23:33,544 INFO L226 Difference]: Without dead ends: 1493 [2021-11-13 18:23:33,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-11-13 18:23:33,548 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 3570 mSDsluCounter, 4193 mSDsCounter, 0 mSdLazyCounter, 5364 mSolverCounterSat, 1414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4997.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 5138 SdHoareTripleChecker+Invalid, 6778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.31ms SdHoareTripleChecker+Time, 1414 IncrementalHoareTripleChecker+Valid, 5364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5883.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:33,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3572 Valid, 5138 Invalid, 6778 Unknown, 0 Unchecked, 80.31ms Time], IncrementalHoareTripleChecker [1414 Valid, 5364 Invalid, 0 Unknown, 0 Unchecked, 5883.05ms Time] [2021-11-13 18:23:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-11-13 18:23:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 916. [2021-11-13 18:23:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 725 states have (on average 1.606896551724138) internal successors, (1165), 732 states have internal predecessors, (1165), 158 states have call successors, (158), 29 states have call predecessors, (158), 32 states have return successors, (178), 156 states have call predecessors, (178), 157 states have call successors, (178) [2021-11-13 18:23:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1501 transitions. [2021-11-13 18:23:33,659 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1501 transitions. Word has length 127 [2021-11-13 18:23:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:33,660 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 1501 transitions. [2021-11-13 18:23:33,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-13 18:23:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1501 transitions. [2021-11-13 18:23:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-13 18:23:33,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:33,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:33,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-13 18:23:33,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_539b23ca-ee19-42f8-a57a-0a258986a879/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 18:23:33,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:33,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1163883698, now seen corresponding path program 1 times [2021-11-13 18:23:33,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:33,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856080134] [2021-11-13 18:23:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:33,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:23:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 18:23:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:23:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-13 18:23:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:23:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:23:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:23:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 18:23:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:23:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:34,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:34,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856080134] [2021-11-13 18:23:34,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856080134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:34,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:34,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:23:34,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026976873] [2021-11-13 18:23:34,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:23:34,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:34,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:23:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:23:34,062 INFO L87 Difference]: Start difference. First operand 916 states and 1501 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:36,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:36,628 INFO L93 Difference]: Finished difference Result 2283 states and 3840 transitions. [2021-11-13 18:23:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:36,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-11-13 18:23:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:36,646 INFO L225 Difference]: With dead ends: 2283 [2021-11-13 18:23:36,646 INFO L226 Difference]: Without dead ends: 1448 [2021-11-13 18:23:36,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:36,653 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1543 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1895.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.29ms SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2245.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:36,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 1643 Invalid, 1658 Unknown, 0 Unchecked, 20.29ms Time], IncrementalHoareTripleChecker [616 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 2245.93ms Time] [2021-11-13 18:23:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-11-13 18:23:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1306. [2021-11-13 18:23:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1036 states have (on average 1.6264478764478765) internal successors, (1685), 1043 states have internal predecessors, (1685), 237 states have call successors, (237), 29 states have call predecessors, (237), 32 states have return successors, (267), 235 states have call predecessors, (267), 236 states have call successors, (267) [2021-11-13 18:23:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2189 transitions. [2021-11-13 18:23:36,823 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2189 transitions. Word has length 130 [2021-11-13 18:23:36,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:36,824 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 2189 transitions. [2021-11-13 18:23:36,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2189 transitions. [2021-11-13 18:23:36,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 18:23:36,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:36,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:36,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:23:36,838 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:36,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2014115342, now seen corresponding path program 1 times [2021-11-13 18:23:36,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:36,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098223176] [2021-11-13 18:23:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:36,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:23:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:23:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:23:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:23:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:23:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 18:23:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 18:23:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:23:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 18:23:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:37,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:37,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098223176] [2021-11-13 18:23:37,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098223176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:37,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:37,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:23:37,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598605138] [2021-11-13 18:23:37,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:37,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:23:37,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:37,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:23:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:23:37,006 INFO L87 Difference]: Start difference. First operand 1306 states and 2189 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:39,677 INFO L93 Difference]: Finished difference Result 3257 states and 5549 transitions. [2021-11-13 18:23:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:39,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-11-13 18:23:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:39,699 INFO L225 Difference]: With dead ends: 3257 [2021-11-13 18:23:39,700 INFO L226 Difference]: Without dead ends: 2085 [2021-11-13 18:23:39,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:39,708 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 1539 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1958.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.94ms SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2317.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:39,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 1615 Invalid, 1657 Unknown, 0 Unchecked, 21.94ms Time], IncrementalHoareTripleChecker [617 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 2317.52ms Time] [2021-11-13 18:23:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2021-11-13 18:23:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1943. [2021-11-13 18:23:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1554 states have (on average 1.6364221364221365) internal successors, (2543), 1561 states have internal predecessors, (2543), 356 states have call successors, (356), 29 states have call predecessors, (356), 32 states have return successors, (386), 354 states have call predecessors, (386), 355 states have call successors, (386) [2021-11-13 18:23:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3285 transitions. [2021-11-13 18:23:39,970 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3285 transitions. Word has length 131 [2021-11-13 18:23:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:39,971 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 3285 transitions. [2021-11-13 18:23:39,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3285 transitions. [2021-11-13 18:23:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-13 18:23:39,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:39,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:39,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:23:39,994 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:39,995 INFO L85 PathProgramCache]: Analyzing trace with hash -448973916, now seen corresponding path program 1 times [2021-11-13 18:23:39,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:39,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326124558] [2021-11-13 18:23:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:39,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:23:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 18:23:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:23:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 18:23:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:23:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 18:23:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-13 18:23:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 18:23:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 18:23:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:40,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:40,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326124558] [2021-11-13 18:23:40,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326124558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:40,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:40,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:23:40,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866813486] [2021-11-13 18:23:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:40,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:23:40,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:23:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:23:40,200 INFO L87 Difference]: Start difference. First operand 1943 states and 3285 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:42,623 INFO L93 Difference]: Finished difference Result 4737 states and 8160 transitions. [2021-11-13 18:23:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-11-13 18:23:42,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:42,669 INFO L225 Difference]: With dead ends: 4737 [2021-11-13 18:23:42,669 INFO L226 Difference]: Without dead ends: 3063 [2021-11-13 18:23:42,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:42,678 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 1546 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1737.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.72ms SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2055.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:42,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 1585 Invalid, 1639 Unknown, 0 Unchecked, 17.72ms Time], IncrementalHoareTripleChecker [621 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 2055.40ms Time] [2021-11-13 18:23:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2021-11-13 18:23:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2921. [2021-11-13 18:23:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2370 states have (on average 1.6443037974683545) internal successors, (3897), 2377 states have internal predecessors, (3897), 518 states have call successors, (518), 29 states have call predecessors, (518), 32 states have return successors, (564), 516 states have call predecessors, (564), 517 states have call successors, (564) [2021-11-13 18:23:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4979 transitions. [2021-11-13 18:23:42,973 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4979 transitions. Word has length 132 [2021-11-13 18:23:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:42,974 INFO L470 AbstractCegarLoop]: Abstraction has 2921 states and 4979 transitions. [2021-11-13 18:23:42,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:42,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4979 transitions. [2021-11-13 18:23:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-13 18:23:42,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:42,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:42,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:23:42,998 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:42,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:42,999 INFO L85 PathProgramCache]: Analyzing trace with hash 260299725, now seen corresponding path program 1 times [2021-11-13 18:23:42,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:42,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930756568] [2021-11-13 18:23:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:43,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:23:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 18:23:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 18:23:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-13 18:23:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 18:23:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 18:23:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:23:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-13 18:23:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-13 18:23:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:43,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:43,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930756568] [2021-11-13 18:23:43,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930756568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:43,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:43,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:23:43,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391317427] [2021-11-13 18:23:43,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:43,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:23:43,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:43,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:23:43,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:23:43,221 INFO L87 Difference]: Start difference. First operand 2921 states and 4979 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:46,034 INFO L93 Difference]: Finished difference Result 7076 states and 12295 transitions. [2021-11-13 18:23:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:46,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-11-13 18:23:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:46,079 INFO L225 Difference]: With dead ends: 7076 [2021-11-13 18:23:46,080 INFO L226 Difference]: Without dead ends: 4643 [2021-11-13 18:23:46,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:46,093 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 1538 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2050.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.41ms SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2411.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:46,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 1598 Invalid, 1640 Unknown, 0 Unchecked, 18.41ms Time], IncrementalHoareTripleChecker [616 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 2411.74ms Time] [2021-11-13 18:23:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2021-11-13 18:23:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 4501. [2021-11-13 18:23:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4501 states, 3705 states have (on average 1.6499325236167341) internal successors, (6113), 3712 states have internal predecessors, (6113), 763 states have call successors, (763), 29 states have call predecessors, (763), 32 states have return successors, (835), 761 states have call predecessors, (835), 762 states have call successors, (835) [2021-11-13 18:23:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4501 states to 4501 states and 7711 transitions. [2021-11-13 18:23:46,613 INFO L78 Accepts]: Start accepts. Automaton has 4501 states and 7711 transitions. Word has length 133 [2021-11-13 18:23:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:46,614 INFO L470 AbstractCegarLoop]: Abstraction has 4501 states and 7711 transitions. [2021-11-13 18:23:46,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4501 states and 7711 transitions. [2021-11-13 18:23:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 18:23:46,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:46,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:46,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:23:46,667 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:46,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1703651880, now seen corresponding path program 1 times [2021-11-13 18:23:46,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:46,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449098415] [2021-11-13 18:23:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:46,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:23:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 18:23:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:23:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-13 18:23:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:23:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:23:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 18:23:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 18:23:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-13 18:23:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:46,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:46,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449098415] [2021-11-13 18:23:46,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449098415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:46,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:46,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:23:46,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265087819] [2021-11-13 18:23:46,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:46,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:23:46,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:23:46,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:23:46,857 INFO L87 Difference]: Start difference. First operand 4501 states and 7711 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:49,633 INFO L93 Difference]: Finished difference Result 11247 states and 19624 transitions. [2021-11-13 18:23:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:49,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-11-13 18:23:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:49,797 INFO L225 Difference]: With dead ends: 11247 [2021-11-13 18:23:49,806 INFO L226 Difference]: Without dead ends: 7486 [2021-11-13 18:23:49,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:49,826 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1541 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1892.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.91ms SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2213.92ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:49,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 1640 Invalid, 1663 Unknown, 0 Unchecked, 17.91ms Time], IncrementalHoareTripleChecker [630 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 2213.92ms Time] [2021-11-13 18:23:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2021-11-13 18:23:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 7344. [2021-11-13 18:23:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7344 states, 6055 states have (on average 1.6469033856317092) internal successors, (9972), 6062 states have internal predecessors, (9972), 1256 states have call successors, (1256), 29 states have call predecessors, (1256), 32 states have return successors, (1372), 1254 states have call predecessors, (1372), 1255 states have call successors, (1372) [2021-11-13 18:23:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7344 states to 7344 states and 12600 transitions. [2021-11-13 18:23:50,621 INFO L78 Accepts]: Start accepts. Automaton has 7344 states and 12600 transitions. Word has length 134 [2021-11-13 18:23:50,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:50,622 INFO L470 AbstractCegarLoop]: Abstraction has 7344 states and 12600 transitions. [2021-11-13 18:23:50,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7344 states and 12600 transitions. [2021-11-13 18:23:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-13 18:23:50,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:50,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:50,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:23:50,662 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash 756971849, now seen corresponding path program 1 times [2021-11-13 18:23:50,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:50,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547951576] [2021-11-13 18:23:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:50,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:23:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:23:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 18:23:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-13 18:23:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:23:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:23:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 18:23:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-13 18:23:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-13 18:23:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:50,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:50,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547951576] [2021-11-13 18:23:50,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547951576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:50,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:50,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:23:50,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897985637] [2021-11-13 18:23:50,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:50,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:23:50,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:50,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:23:50,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:23:50,865 INFO L87 Difference]: Start difference. First operand 7344 states and 12600 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:53,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:53,703 INFO L93 Difference]: Finished difference Result 18667 states and 32588 transitions. [2021-11-13 18:23:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:53,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-11-13 18:23:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:53,765 INFO L225 Difference]: With dead ends: 18667 [2021-11-13 18:23:53,765 INFO L226 Difference]: Without dead ends: 12465 [2021-11-13 18:23:53,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:53,795 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1538 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1739.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.24ms SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2042.92ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:53,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 1629 Invalid, 1649 Unknown, 0 Unchecked, 15.24ms Time], IncrementalHoareTripleChecker [622 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 2042.92ms Time] [2021-11-13 18:23:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12465 states. [2021-11-13 18:23:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12465 to 12323. [2021-11-13 18:23:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12323 states, 10212 states have (on average 1.6473756365060712) internal successors, (16823), 10219 states have internal predecessors, (16823), 2078 states have call successors, (2078), 29 states have call predecessors, (2078), 32 states have return successors, (2272), 2076 states have call predecessors, (2272), 2077 states have call successors, (2272) [2021-11-13 18:23:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12323 states to 12323 states and 21173 transitions. [2021-11-13 18:23:54,970 INFO L78 Accepts]: Start accepts. Automaton has 12323 states and 21173 transitions. Word has length 135 [2021-11-13 18:23:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:23:54,971 INFO L470 AbstractCegarLoop]: Abstraction has 12323 states and 21173 transitions. [2021-11-13 18:23:54,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 12323 states and 21173 transitions. [2021-11-13 18:23:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-13 18:23:55,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:23:55,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:23:55,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:23:55,026 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:23:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:23:55,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1993121446, now seen corresponding path program 1 times [2021-11-13 18:23:55,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:23:55,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381156822] [2021-11-13 18:23:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:23:55,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:23:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:23:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:23:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:23:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:23:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:23:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:23:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-13 18:23:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:23:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 18:23:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:23:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:23:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 18:23:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-13 18:23:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 18:23:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:23:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:23:55,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:23:55,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381156822] [2021-11-13 18:23:55,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381156822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:23:55,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:23:55,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:23:55,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384004800] [2021-11-13 18:23:55,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:23:55,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:23:55,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:23:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:23:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:23:55,231 INFO L87 Difference]: Start difference. First operand 12323 states and 21173 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:23:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:23:58,959 INFO L93 Difference]: Finished difference Result 29625 states and 51448 transitions. [2021-11-13 18:23:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:23:58,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-11-13 18:23:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:23:59,070 INFO L225 Difference]: With dead ends: 29625 [2021-11-13 18:23:59,070 INFO L226 Difference]: Without dead ends: 19418 [2021-11-13 18:23:59,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:23:59,110 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1531 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2017.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.50ms SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2439.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:23:59,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1579 Invalid, 1649 Unknown, 0 Unchecked, 19.50ms Time], IncrementalHoareTripleChecker [617 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 2439.89ms Time] [2021-11-13 18:23:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19418 states. [2021-11-13 18:24:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19418 to 19276. [2021-11-13 18:24:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 15962 states have (on average 1.6221651422127552) internal successors, (25893), 15969 states have internal predecessors, (25893), 3281 states have call successors, (3281), 29 states have call predecessors, (3281), 32 states have return successors, (3619), 3279 states have call predecessors, (3619), 3280 states have call successors, (3619) [2021-11-13 18:24:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 32793 transitions. [2021-11-13 18:24:00,788 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 32793 transitions. Word has length 136 [2021-11-13 18:24:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:00,788 INFO L470 AbstractCegarLoop]: Abstraction has 19276 states and 32793 transitions. [2021-11-13 18:24:00,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:24:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 32793 transitions. [2021-11-13 18:24:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-13 18:24:00,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:00,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:00,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 18:24:00,832 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:00,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2018922648, now seen corresponding path program 1 times [2021-11-13 18:24:00,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:00,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895563595] [2021-11-13 18:24:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:00,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:24:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:00,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:24:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:24:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:24:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:24:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:24:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:00,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 18:24:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 18:24:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:24:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 18:24:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 18:24:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 18:24:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 18:24:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-13 18:24:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:24:01,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:01,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895563595] [2021-11-13 18:24:01,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895563595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:01,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:01,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:24:01,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035135667] [2021-11-13 18:24:01,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:01,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:24:01,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:24:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:24:01,032 INFO L87 Difference]: Start difference. First operand 19276 states and 32793 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:24:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:05,597 INFO L93 Difference]: Finished difference Result 51057 states and 88366 transitions. [2021-11-13 18:24:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:24:05,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-11-13 18:24:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:05,806 INFO L225 Difference]: With dead ends: 51057 [2021-11-13 18:24:05,806 INFO L226 Difference]: Without dead ends: 34539 [2021-11-13 18:24:05,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:24:05,860 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 1538 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1906.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.81ms SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2215.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:05,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 1587 Invalid, 1657 Unknown, 0 Unchecked, 16.81ms Time], IncrementalHoareTripleChecker [638 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 2215.27ms Time] [2021-11-13 18:24:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34539 states. [2021-11-13 18:24:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34539 to 34397. [2021-11-13 18:24:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34397 states, 28633 states have (on average 1.6190758914539167) internal successors, (46359), 28640 states have internal predecessors, (46359), 5731 states have call successors, (5731), 29 states have call predecessors, (5731), 32 states have return successors, (6343), 5729 states have call predecessors, (6343), 5730 states have call successors, (6343) [2021-11-13 18:24:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34397 states to 34397 states and 58433 transitions. [2021-11-13 18:24:08,960 INFO L78 Accepts]: Start accepts. Automaton has 34397 states and 58433 transitions. Word has length 137 [2021-11-13 18:24:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:08,961 INFO L470 AbstractCegarLoop]: Abstraction has 34397 states and 58433 transitions. [2021-11-13 18:24:08,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:24:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 34397 states and 58433 transitions. [2021-11-13 18:24:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-13 18:24:09,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:09,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:09,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 18:24:09,002 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:09,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1246015756, now seen corresponding path program 1 times [2021-11-13 18:24:09,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:09,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333955672] [2021-11-13 18:24:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:09,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:24:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:24:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:24:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:24:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:24:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:24:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 18:24:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 18:24:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 18:24:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 18:24:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-13 18:24:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 18:24:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 18:24:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 18:24:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:24:09,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:09,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333955672] [2021-11-13 18:24:09,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333955672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:09,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:09,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:24:09,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925915750] [2021-11-13 18:24:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:09,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:24:09,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:09,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:24:09,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:24:09,197 INFO L87 Difference]: Start difference. First operand 34397 states and 58433 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:24:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:15,654 INFO L93 Difference]: Finished difference Result 93929 states and 161765 transitions. [2021-11-13 18:24:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:24:15,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2021-11-13 18:24:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:16,020 INFO L225 Difference]: With dead ends: 93929 [2021-11-13 18:24:16,021 INFO L226 Difference]: Without dead ends: 63206 [2021-11-13 18:24:16,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:24:16,113 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 1532 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2369.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.13ms SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2679.26ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:16,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1607 Invalid, 1657 Unknown, 0 Unchecked, 15.13ms Time], IncrementalHoareTripleChecker [617 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 2679.26ms Time] [2021-11-13 18:24:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63206 states. [2021-11-13 18:24:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63206 to 63064. [2021-11-13 18:24:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63064 states, 52787 states have (on average 1.614867296872336) internal successors, (85244), 52794 states have internal predecessors, (85244), 10244 states have call successors, (10244), 29 states have call predecessors, (10244), 32 states have return successors, (11388), 10242 states have call predecessors, (11388), 10243 states have call successors, (11388) [2021-11-13 18:24:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63064 states to 63064 states and 106876 transitions. [2021-11-13 18:24:21,223 INFO L78 Accepts]: Start accepts. Automaton has 63064 states and 106876 transitions. Word has length 138 [2021-11-13 18:24:21,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:21,224 INFO L470 AbstractCegarLoop]: Abstraction has 63064 states and 106876 transitions. [2021-11-13 18:24:21,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:24:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 63064 states and 106876 transitions. [2021-11-13 18:24:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 18:24:21,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:21,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:21,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 18:24:21,283 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash -675372664, now seen corresponding path program 1 times [2021-11-13 18:24:21,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:21,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384659582] [2021-11-13 18:24:21,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:21,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:24:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:24:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:24:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:24:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:24:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:24:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 18:24:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-13 18:24:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:24:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:24:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:24:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 18:24:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 18:24:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-13 18:24:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:24:21,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:21,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384659582] [2021-11-13 18:24:21,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384659582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:21,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:21,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:24:21,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925857800] [2021-11-13 18:24:21,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:21,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:24:21,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:21,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:24:21,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:24:21,461 INFO L87 Difference]: Start difference. First operand 63064 states and 106876 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:24:30,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:24:30,411 INFO L93 Difference]: Finished difference Result 118305 states and 204142 transitions. [2021-11-13 18:24:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:24:30,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2021-11-13 18:24:30,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:24:31,043 INFO L225 Difference]: With dead ends: 118305 [2021-11-13 18:24:31,044 INFO L226 Difference]: Without dead ends: 118079 [2021-11-13 18:24:31,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:24:31,102 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 1529 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1794.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.55ms SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2164.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:24:31,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 1592 Invalid, 1652 Unknown, 0 Unchecked, 14.55ms Time], IncrementalHoareTripleChecker [618 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 2164.47ms Time] [2021-11-13 18:24:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118079 states. [2021-11-13 18:24:40,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118079 to 117937. [2021-11-13 18:24:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117937 states, 99292 states have (on average 1.6095153688111832) internal successors, (159812), 99299 states have internal predecessors, (159812), 18612 states have call successors, (18612), 29 states have call predecessors, (18612), 32 states have return successors, (20802), 18610 states have call predecessors, (20802), 18611 states have call successors, (20802) [2021-11-13 18:24:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117937 states to 117937 states and 199226 transitions. [2021-11-13 18:24:40,975 INFO L78 Accepts]: Start accepts. Automaton has 117937 states and 199226 transitions. Word has length 139 [2021-11-13 18:24:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:24:40,976 INFO L470 AbstractCegarLoop]: Abstraction has 117937 states and 199226 transitions. [2021-11-13 18:24:40,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 18:24:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 117937 states and 199226 transitions. [2021-11-13 18:24:41,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-13 18:24:41,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:24:41,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:24:41,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 18:24:41,032 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:24:41,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:24:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash 197221997, now seen corresponding path program 1 times [2021-11-13 18:24:41,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:24:41,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402896425] [2021-11-13 18:24:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:24:41,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:24:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:24:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-13 18:24:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:24:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 18:24:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:24:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:24:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 18:24:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:24:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:24:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-13 18:24:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 18:24:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:24:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-13 18:24:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 18:24:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:24:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-13 18:24:41,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:24:41,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402896425] [2021-11-13 18:24:41,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402896425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:24:41,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:24:41,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-13 18:24:41,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494689231] [2021-11-13 18:24:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:24:41,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:24:41,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:24:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:24:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:24:41,437 INFO L87 Difference]: Start difference. First operand 117937 states and 199226 transitions. Second operand has 18 states, 16 states have (on average 6.0) internal successors, (96), 12 states have internal predecessors, (96), 6 states have call successors, (17), 7 states have call predecessors, (17), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)