./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa --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 5be9e48e11f5f92f9ccb04262780ea6fa0bae40b757b81b8e52fca7547f54831 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:19:03,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:19:03,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:19:03,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:19:03,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:19:03,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:19:03,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:19:03,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:19:03,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:19:03,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:19:03,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:19:03,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:19:03,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:19:03,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:19:03,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:19:03,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:19:03,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:19:03,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:19:03,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:19:03,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:19:03,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:19:03,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:19:03,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:19:03,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:19:03,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:19:03,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:19:03,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:19:03,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:19:03,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:19:03,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:19:03,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:19:03,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:19:03,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:19:03,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:19:03,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:19:03,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:19:03,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:19:03,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:19:03,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:19:03,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:19:03,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:19:03,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:19:03,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:19:03,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:19:03,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:19:03,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:19:03,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:19:03,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:19:03,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:19:03,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:19:03,937 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:19:03,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:19:03,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:19:03,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:19:03,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:19:03,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:19:03,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:19:03,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:19:03,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:19:03,939 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:19:03,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:19:03,939 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:19:03,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:19:03,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:19:03,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:19:03,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:19:03,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:19:03,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:19:03,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:19:03,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:19:03,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:19:03,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:19:03,941 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:19:03,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:19:03,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:19:03,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:19:03,942 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_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5be9e48e11f5f92f9ccb04262780ea6fa0bae40b757b81b8e52fca7547f54831 [2021-12-06 22:19:04,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:19:04,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:19:04,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:19:04,145 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:19:04,146 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:19:04,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec8_product26.cil.c [2021-12-06 22:19:04,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/data/b32b35f1f/bb80136054d04e99a1f4f4cafb5afd47/FLAGb5e8915ae [2021-12-06 22:19:04,675 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:19:04,676 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/sv-benchmarks/c/product-lines/email_spec8_product26.cil.c [2021-12-06 22:19:04,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/data/b32b35f1f/bb80136054d04e99a1f4f4cafb5afd47/FLAGb5e8915ae [2021-12-06 22:19:04,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/data/b32b35f1f/bb80136054d04e99a1f4f4cafb5afd47 [2021-12-06 22:19:04,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:19:04,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:19:04,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:19:04,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:19:04,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:19:04,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:19:04" (1/1) ... [2021-12-06 22:19:04,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47cfad0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:04, skipping insertion in model container [2021-12-06 22:19:04,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:19:04" (1/1) ... [2021-12-06 22:19:04,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:19:04,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:19:04,987 WARN L230 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_10004ac6-c302-43e4-8960-80cea933b1c0/sv-benchmarks/c/product-lines/email_spec8_product26.cil.c[14808,14821] [2021-12-06 22:19:05,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:19:05,100 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:19:05,124 WARN L230 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_10004ac6-c302-43e4-8960-80cea933b1c0/sv-benchmarks/c/product-lines/email_spec8_product26.cil.c[14808,14821] [2021-12-06 22:19:05,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:19:05,184 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:19:05,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05 WrapperNode [2021-12-06 22:19:05,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:19:05,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:19:05,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:19:05,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:19:05,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,243 INFO L137 Inliner]: procedures = 132, calls = 230, calls flagged for inlining = 61, calls inlined = 58, statements flattened = 1109 [2021-12-06 22:19:05,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:19:05,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:19:05,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:19:05,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:19:05,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:19:05,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:19:05,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:19:05,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:19:05,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (1/1) ... [2021-12-06 22:19:05,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:19:05,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:19:05,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:19:05,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:19:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-06 22:19:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-06 22:19:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 22:19:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 22:19:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-06 22:19:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-06 22:19:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 22:19:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 22:19:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 22:19:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 22:19:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-12-06 22:19:05,373 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-12-06 22:19:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 22:19:05,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 22:19:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 22:19:05,373 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 22:19:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 22:19:05,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 22:19:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 22:19:05,374 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 22:19:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 22:19:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 22:19:05,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 22:19:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-06 22:19:05,374 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-06 22:19:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 22:19:05,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 22:19:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:19:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-06 22:19:05,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-06 22:19:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 22:19:05,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 22:19:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 22:19:05,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 22:19:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 22:19:05,376 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 22:19:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 22:19:05,376 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 22:19:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 22:19:05,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 22:19:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 22:19:05,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 22:19:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 22:19:05,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 22:19:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:19:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 22:19:05,377 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 22:19:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-06 22:19:05,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-06 22:19:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:19:05,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:19:05,527 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:19:05,529 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:19:06,021 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:19:06,032 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:19:06,033 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:19:06,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:19:06 BoogieIcfgContainer [2021-12-06 22:19:06,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:19:06,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:19:06,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:19:06,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:19:06,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:19:04" (1/3) ... [2021-12-06 22:19:06,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7446a264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:19:06, skipping insertion in model container [2021-12-06 22:19:06,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:19:05" (2/3) ... [2021-12-06 22:19:06,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7446a264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:19:06, skipping insertion in model container [2021-12-06 22:19:06,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:19:06" (3/3) ... [2021-12-06 22:19:06,043 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product26.cil.c [2021-12-06 22:19:06,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:19:06,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:19:06,089 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:19:06,094 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:19:06,094 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:19:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 400 states, 313 states have (on average 1.5623003194888179) internal successors, (489), 318 states have internal predecessors, (489), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-06 22:19:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 22:19:06,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:06,131 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] [2021-12-06 22:19:06,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:06,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:06,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1772077766, now seen corresponding path program 1 times [2021-12-06 22:19:06,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:06,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988030551] [2021-12-06 22:19:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:06,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:19:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:19:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:19:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:19:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:19:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:19:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:19:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:19:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:19:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 22:19:06,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:06,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988030551] [2021-12-06 22:19:06,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988030551] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:19:06,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783643930] [2021-12-06 22:19:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:06,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:06,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:19:06,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:19:06,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:19:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:06,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 22:19:06,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:19:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 22:19:06,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:19:06,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783643930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:06,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:19:06,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 22:19:06,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823408005] [2021-12-06 22:19:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:06,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:19:06,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:19:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:19:06,887 INFO L87 Difference]: Start difference. First operand has 400 states, 313 states have (on average 1.5623003194888179) internal successors, (489), 318 states have internal predecessors, (489), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:06,934 INFO L93 Difference]: Finished difference Result 602 states and 908 transitions. [2021-12-06 22:19:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:19:06,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2021-12-06 22:19:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:06,947 INFO L225 Difference]: With dead ends: 602 [2021-12-06 22:19:06,948 INFO L226 Difference]: Without dead ends: 393 [2021-12-06 22:19:06,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:19:06,955 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:06,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:19:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-12-06 22:19:07,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-12-06 22:19:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 307 states have (on average 1.5570032573289903) internal successors, (478), 311 states have internal predecessors, (478), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-06 22:19:07,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 601 transitions. [2021-12-06 22:19:07,014 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 601 transitions. Word has length 98 [2021-12-06 22:19:07,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:07,015 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 601 transitions. [2021-12-06 22:19:07,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 601 transitions. [2021-12-06 22:19:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 22:19:07,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:07,021 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] [2021-12-06 22:19:07,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:19:07,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 22:19:07,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:07,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1213717743, now seen corresponding path program 1 times [2021-12-06 22:19:07,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:07,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663674214] [2021-12-06 22:19:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:07,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:19:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:19:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:19:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:19:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:19:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:19:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:19:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:19:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:19:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 22:19:07,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:07,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663674214] [2021-12-06 22:19:07,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663674214] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:19:07,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042778050] [2021-12-06 22:19:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:07,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:07,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:19:07,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:19:07,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:19:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:07,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:19:07,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:19:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 22:19:07,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:19:07,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042778050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:07,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:19:07,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:19:07,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115157504] [2021-12-06 22:19:07,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:07,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:19:07,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:07,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:19:07,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:19:07,736 INFO L87 Difference]: Start difference. First operand 393 states and 601 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:07,774 INFO L93 Difference]: Finished difference Result 592 states and 886 transitions. [2021-12-06 22:19:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:19:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2021-12-06 22:19:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:07,779 INFO L225 Difference]: With dead ends: 592 [2021-12-06 22:19:07,779 INFO L226 Difference]: Without dead ends: 396 [2021-12-06 22:19:07,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:19:07,782 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 1 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:07,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1196 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:19:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-06 22:19:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 395. [2021-12-06 22:19:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 309 states have (on average 1.5533980582524272) internal successors, (480), 313 states have internal predecessors, (480), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-06 22:19:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 603 transitions. [2021-12-06 22:19:07,816 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 603 transitions. Word has length 99 [2021-12-06 22:19:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:07,816 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 603 transitions. [2021-12-06 22:19:07,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 603 transitions. [2021-12-06 22:19:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:19:07,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:07,821 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] [2021-12-06 22:19:07,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:19:08,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:08,024 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:08,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1440636413, now seen corresponding path program 1 times [2021-12-06 22:19:08,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:08,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815788030] [2021-12-06 22:19:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:08,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:19:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:19:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:19:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:19:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:19:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:19:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:19:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:19:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:19:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:19:08,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815788030] [2021-12-06 22:19:08,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815788030] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:19:08,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398783534] [2021-12-06 22:19:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:08,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:08,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:19:08,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:19:08,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:19:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:19:08,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:19:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 22:19:08,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:19:08,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398783534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:08,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:19:08,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:19:08,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81450746] [2021-12-06 22:19:08,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:08,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:19:08,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:08,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:19:08,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:19:08,484 INFO L87 Difference]: Start difference. First operand 395 states and 603 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:08,511 INFO L93 Difference]: Finished difference Result 843 states and 1306 transitions. [2021-12-06 22:19:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:19:08,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-12-06 22:19:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:08,515 INFO L225 Difference]: With dead ends: 843 [2021-12-06 22:19:08,515 INFO L226 Difference]: Without dead ends: 475 [2021-12-06 22:19:08,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:19:08,517 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 142 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:08,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1176 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:19:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-12-06 22:19:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 467. [2021-12-06 22:19:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 367 states have (on average 1.5722070844686649) internal successors, (577), 371 states have internal predecessors, (577), 76 states have call successors, (76), 23 states have call predecessors, (76), 23 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2021-12-06 22:19:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 728 transitions. [2021-12-06 22:19:08,539 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 728 transitions. Word has length 108 [2021-12-06 22:19:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:08,540 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 728 transitions. [2021-12-06 22:19:08,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 728 transitions. [2021-12-06 22:19:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 22:19:08,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:08,543 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] [2021-12-06 22:19:08,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:19:08,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:08,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:08,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash 630003650, now seen corresponding path program 1 times [2021-12-06 22:19:08,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:08,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917349731] [2021-12-06 22:19:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:08,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:19:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:19:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:19:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:19:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:19:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:19:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:19:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:19:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:19:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:19:08,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:08,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917349731] [2021-12-06 22:19:08,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917349731] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:19:08,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026096488] [2021-12-06 22:19:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:08,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:19:08,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:19:08,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:19:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:19:09,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:19:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 22:19:09,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:19:09,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026096488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:09,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:19:09,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 22:19:09,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352032506] [2021-12-06 22:19:09,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:09,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:19:09,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:09,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:19:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:19:09,215 INFO L87 Difference]: Start difference. First operand 467 states and 728 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:19:09,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:09,267 INFO L93 Difference]: Finished difference Result 925 states and 1446 transitions. [2021-12-06 22:19:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:19:09,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2021-12-06 22:19:09,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:09,277 INFO L225 Difference]: With dead ends: 925 [2021-12-06 22:19:09,277 INFO L226 Difference]: Without dead ends: 469 [2021-12-06 22:19:09,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:09,280 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 160 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:09,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 2186 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:19:09,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-12-06 22:19:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2021-12-06 22:19:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 368 states have (on average 1.5706521739130435) internal successors, (578), 373 states have internal predecessors, (578), 76 states have call successors, (76), 23 states have call predecessors, (76), 24 states have return successors, (77), 74 states have call predecessors, (77), 75 states have call successors, (77) [2021-12-06 22:19:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 731 transitions. [2021-12-06 22:19:09,311 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 731 transitions. Word has length 109 [2021-12-06 22:19:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:09,311 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 731 transitions. [2021-12-06 22:19:09,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:19:09,312 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 731 transitions. [2021-12-06 22:19:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 22:19:09,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:09,314 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] [2021-12-06 22:19:09,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:19:09,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:09,515 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:09,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1737380185, now seen corresponding path program 1 times [2021-12-06 22:19:09,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:09,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921771093] [2021-12-06 22:19:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:09,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:19:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:19:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:19:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:19:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:19:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:19:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:19:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:19:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:19:09,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921771093] [2021-12-06 22:19:09,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921771093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:19:09,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118103134] [2021-12-06 22:19:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:09,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:09,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:19:09,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:19:09,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:19:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:09,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:19:09,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:19:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 22:19:09,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:19:09,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118103134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:09,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:19:09,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 22:19:09,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133545625] [2021-12-06 22:19:09,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:09,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:19:09,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:19:09,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:19:09,925 INFO L87 Difference]: Start difference. First operand 469 states and 731 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:19:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:09,989 INFO L93 Difference]: Finished difference Result 927 states and 1451 transitions. [2021-12-06 22:19:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:19:09,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2021-12-06 22:19:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:10,001 INFO L225 Difference]: With dead ends: 927 [2021-12-06 22:19:10,001 INFO L226 Difference]: Without dead ends: 471 [2021-12-06 22:19:10,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:19:10,004 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 159 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:10,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 2175 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:19:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-12-06 22:19:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2021-12-06 22:19:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 369 states have (on average 1.5691056910569106) internal successors, (579), 375 states have internal predecessors, (579), 76 states have call successors, (76), 23 states have call predecessors, (76), 25 states have return successors, (82), 74 states have call predecessors, (82), 75 states have call successors, (82) [2021-12-06 22:19:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 737 transitions. [2021-12-06 22:19:10,032 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 737 transitions. Word has length 110 [2021-12-06 22:19:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:10,032 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 737 transitions. [2021-12-06 22:19:10,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:19:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 737 transitions. [2021-12-06 22:19:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 22:19:10,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:10,036 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] [2021-12-06 22:19:10,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:19:10,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:10,236 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1454142977, now seen corresponding path program 1 times [2021-12-06 22:19:10,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:10,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998113847] [2021-12-06 22:19:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:10,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:19:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:19:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:19:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:19:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:19:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:19:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:19:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:19:10,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:10,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998113847] [2021-12-06 22:19:10,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998113847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:10,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:10,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:19:10,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041210329] [2021-12-06 22:19:10,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:10,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:19:10,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:10,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:19:10,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:19:10,349 INFO L87 Difference]: Start difference. First operand 471 states and 737 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:19:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:11,778 INFO L93 Difference]: Finished difference Result 1112 states and 1766 transitions. [2021-12-06 22:19:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:19:11,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2021-12-06 22:19:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:11,785 INFO L225 Difference]: With dead ends: 1112 [2021-12-06 22:19:11,785 INFO L226 Difference]: Without dead ends: 664 [2021-12-06 22:19:11,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:19:11,788 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1462 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:11,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 2070 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 22:19:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-12-06 22:19:11,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 471. [2021-12-06 22:19:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 369 states have (on average 1.5691056910569106) internal successors, (579), 375 states have internal predecessors, (579), 76 states have call successors, (76), 23 states have call predecessors, (76), 25 states have return successors, (81), 74 states have call predecessors, (81), 75 states have call successors, (81) [2021-12-06 22:19:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 736 transitions. [2021-12-06 22:19:11,838 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 736 transitions. Word has length 111 [2021-12-06 22:19:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:11,838 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 736 transitions. [2021-12-06 22:19:11,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:19:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 736 transitions. [2021-12-06 22:19:11,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 22:19:11,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:11,841 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] [2021-12-06 22:19:11,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:19:11,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:11,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1166401654, now seen corresponding path program 2 times [2021-12-06 22:19:11,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:11,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831634379] [2021-12-06 22:19:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:11,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:19:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:19:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:19:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:19:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:19:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:19:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:19:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:19:11,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:11,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831634379] [2021-12-06 22:19:11,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831634379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:11,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:11,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:19:11,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383240371] [2021-12-06 22:19:11,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:11,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:19:11,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:11,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:19:11,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:19:11,938 INFO L87 Difference]: Start difference. First operand 471 states and 736 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:19:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:13,113 INFO L93 Difference]: Finished difference Result 1114 states and 1769 transitions. [2021-12-06 22:19:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:19:13,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2021-12-06 22:19:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:13,118 INFO L225 Difference]: With dead ends: 1114 [2021-12-06 22:19:13,118 INFO L226 Difference]: Without dead ends: 666 [2021-12-06 22:19:13,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:19:13,120 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1457 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:13,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 2062 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:19:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-06 22:19:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 473. [2021-12-06 22:19:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 370 states have (on average 1.5675675675675675) internal successors, (580), 377 states have internal predecessors, (580), 76 states have call successors, (76), 23 states have call predecessors, (76), 26 states have return successors, (83), 74 states have call predecessors, (83), 75 states have call successors, (83) [2021-12-06 22:19:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 739 transitions. [2021-12-06 22:19:13,144 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 739 transitions. Word has length 112 [2021-12-06 22:19:13,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:13,144 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 739 transitions. [2021-12-06 22:19:13,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:19:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 739 transitions. [2021-12-06 22:19:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 22:19:13,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:13,146 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] [2021-12-06 22:19:13,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:19:13,146 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash 904019238, now seen corresponding path program 1 times [2021-12-06 22:19:13,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:13,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801381765] [2021-12-06 22:19:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:13,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:19:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:19:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:19:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:19:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:19:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:19:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:19:13,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:13,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801381765] [2021-12-06 22:19:13,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801381765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:13,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:13,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:19:13,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793246917] [2021-12-06 22:19:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:13,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:19:13,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:19:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:19:13,253 INFO L87 Difference]: Start difference. First operand 473 states and 739 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 22:19:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:14,831 INFO L93 Difference]: Finished difference Result 1112 states and 1764 transitions. [2021-12-06 22:19:14,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:19:14,831 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2021-12-06 22:19:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:14,835 INFO L225 Difference]: With dead ends: 1112 [2021-12-06 22:19:14,835 INFO L226 Difference]: Without dead ends: 666 [2021-12-06 22:19:14,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:19:14,837 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1605 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 4026 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 4675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 4026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:14,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 2687 Invalid, 4675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 4026 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 22:19:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-06 22:19:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 473. [2021-12-06 22:19:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 370 states have (on average 1.5675675675675675) internal successors, (580), 377 states have internal predecessors, (580), 76 states have call successors, (76), 23 states have call predecessors, (76), 26 states have return successors, (82), 74 states have call predecessors, (82), 75 states have call successors, (82) [2021-12-06 22:19:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 738 transitions. [2021-12-06 22:19:14,861 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 738 transitions. Word has length 113 [2021-12-06 22:19:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:14,861 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 738 transitions. [2021-12-06 22:19:14,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 22:19:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 738 transitions. [2021-12-06 22:19:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 22:19:14,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:14,863 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] [2021-12-06 22:19:14,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:19:14,863 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 335510668, now seen corresponding path program 2 times [2021-12-06 22:19:14,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:14,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144342274] [2021-12-06 22:19:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:14,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:19:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:19:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:19:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:19:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:19:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:19:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:19:14,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:14,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144342274] [2021-12-06 22:19:14,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144342274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:14,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:14,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:19:14,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083229503] [2021-12-06 22:19:14,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:14,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:19:14,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:19:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:19:14,966 INFO L87 Difference]: Start difference. First operand 473 states and 738 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 22:19:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:16,506 INFO L93 Difference]: Finished difference Result 1114 states and 1770 transitions. [2021-12-06 22:19:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:19:16,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2021-12-06 22:19:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:16,511 INFO L225 Difference]: With dead ends: 1114 [2021-12-06 22:19:16,511 INFO L226 Difference]: Without dead ends: 668 [2021-12-06 22:19:16,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:19:16,512 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1600 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 4050 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 4690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 4050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:16,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 2702 Invalid, 4690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 4050 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 22:19:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-12-06 22:19:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 475. [2021-12-06 22:19:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 371 states have (on average 1.5660377358490567) internal successors, (581), 379 states have internal predecessors, (581), 76 states have call successors, (76), 23 states have call predecessors, (76), 27 states have return successors, (87), 74 states have call predecessors, (87), 75 states have call successors, (87) [2021-12-06 22:19:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 744 transitions. [2021-12-06 22:19:16,537 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 744 transitions. Word has length 114 [2021-12-06 22:19:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:16,537 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 744 transitions. [2021-12-06 22:19:16,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 22:19:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 744 transitions. [2021-12-06 22:19:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-06 22:19:16,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:16,539 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] [2021-12-06 22:19:16,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:19:16,540 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:16,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1768204843, now seen corresponding path program 1 times [2021-12-06 22:19:16,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:16,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370300301] [2021-12-06 22:19:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:16,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:19:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:19:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:19:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:19:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:19:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:19:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 22:19:16,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370300301] [2021-12-06 22:19:16,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370300301] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:19:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339012058] [2021-12-06 22:19:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:16,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:16,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:19:16,638 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:19:16,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:19:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:16,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:19:16,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:19:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:16,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:19:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:16,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339012058] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:19:16,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:19:16,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-06 22:19:16,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746052986] [2021-12-06 22:19:16,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:19:16,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:19:16,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:16,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:19:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:19:16,999 INFO L87 Difference]: Start difference. First operand 475 states and 744 transitions. Second operand has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-06 22:19:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:19,366 INFO L93 Difference]: Finished difference Result 2023 states and 3408 transitions. [2021-12-06 22:19:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:19:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 115 [2021-12-06 22:19:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:19,375 INFO L225 Difference]: With dead ends: 2023 [2021-12-06 22:19:19,375 INFO L226 Difference]: Without dead ends: 1579 [2021-12-06 22:19:19,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:19:19,377 INFO L933 BasicCegarLoop]: 909 mSDtfsCounter, 4235 mSDsluCounter, 3770 mSDsCounter, 0 mSdLazyCounter, 5806 mSolverCounterSat, 1638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 7444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1638 IncrementalHoareTripleChecker+Valid, 5806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:19,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 4679 Invalid, 7444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1638 Valid, 5806 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 22:19:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-12-06 22:19:19,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 918. [2021-12-06 22:19:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 735 states have (on average 1.6149659863945578) internal successors, (1187), 743 states have internal predecessors, (1187), 155 states have call successors, (155), 23 states have call predecessors, (155), 27 states have return successors, (176), 153 states have call predecessors, (176), 154 states have call successors, (176) [2021-12-06 22:19:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1518 transitions. [2021-12-06 22:19:19,432 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1518 transitions. Word has length 115 [2021-12-06 22:19:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:19,432 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 1518 transitions. [2021-12-06 22:19:19,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.214285714285714) internal successors, (129), 11 states have internal predecessors, (129), 4 states have call successors, (30), 6 states have call predecessors, (30), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-06 22:19:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1518 transitions. [2021-12-06 22:19:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 22:19:19,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:19,436 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:19:19,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:19:19,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:19:19,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -294936037, now seen corresponding path program 1 times [2021-12-06 22:19:19,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:19,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903360670] [2021-12-06 22:19:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:19,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:19:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:19:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:19:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:19:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:19:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:19:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:19,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:19,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903360670] [2021-12-06 22:19:19,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903360670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:19,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:19,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:19,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630725623] [2021-12-06 22:19:19,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:19,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:19,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:19,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:19,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:19,745 INFO L87 Difference]: Start difference. First operand 918 states and 1518 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:20,688 INFO L93 Difference]: Finished difference Result 2374 states and 4016 transitions. [2021-12-06 22:19:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:20,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2021-12-06 22:19:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:20,696 INFO L225 Difference]: With dead ends: 2374 [2021-12-06 22:19:20,697 INFO L226 Difference]: Without dead ends: 1534 [2021-12-06 22:19:20,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:20,699 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 1455 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:20,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 1702 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:19:20,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2021-12-06 22:19:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1333. [2021-12-06 22:19:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1071 states have (on average 1.6311858076563959) internal successors, (1747), 1079 states have internal predecessors, (1747), 234 states have call successors, (234), 23 states have call predecessors, (234), 27 states have return successors, (265), 232 states have call predecessors, (265), 233 states have call successors, (265) [2021-12-06 22:19:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 2246 transitions. [2021-12-06 22:19:20,774 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 2246 transitions. Word has length 118 [2021-12-06 22:19:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:20,774 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 2246 transitions. [2021-12-06 22:19:20,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 2246 transitions. [2021-12-06 22:19:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 22:19:20,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:20,780 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] [2021-12-06 22:19:20,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:19:20,781 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 7565295, now seen corresponding path program 1 times [2021-12-06 22:19:20,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:20,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582560867] [2021-12-06 22:19:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:20,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:19:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:19:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:19:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:19:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:19:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:19:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:20,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:20,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582560867] [2021-12-06 22:19:20,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582560867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:20,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:20,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:20,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855693295] [2021-12-06 22:19:20,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:20,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:20,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:20,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:20,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:20,855 INFO L87 Difference]: Start difference. First operand 1333 states and 2246 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:21,863 INFO L93 Difference]: Finished difference Result 3413 states and 5829 transitions. [2021-12-06 22:19:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:21,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2021-12-06 22:19:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:21,875 INFO L225 Difference]: With dead ends: 3413 [2021-12-06 22:19:21,875 INFO L226 Difference]: Without dead ends: 2211 [2021-12-06 22:19:21,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:21,878 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 1450 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:21,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 1709 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:19:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2021-12-06 22:19:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2010. [2021-12-06 22:19:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1629 states have (on average 1.638428483732351) internal successors, (2669), 1637 states have internal predecessors, (2669), 353 states have call successors, (353), 23 states have call predecessors, (353), 27 states have return successors, (384), 351 states have call predecessors, (384), 352 states have call successors, (384) [2021-12-06 22:19:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3406 transitions. [2021-12-06 22:19:21,988 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3406 transitions. Word has length 119 [2021-12-06 22:19:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:21,989 INFO L470 AbstractCegarLoop]: Abstraction has 2010 states and 3406 transitions. [2021-12-06 22:19:21,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3406 transitions. [2021-12-06 22:19:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 22:19:21,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:21,996 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] [2021-12-06 22:19:21,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:19:21,996 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:21,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1246694157, now seen corresponding path program 1 times [2021-12-06 22:19:21,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:21,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969605297] [2021-12-06 22:19:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:21,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:19:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:19:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:19:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:19:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:19:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:19:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:22,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:22,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969605297] [2021-12-06 22:19:22,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969605297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:22,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:22,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:22,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118632400] [2021-12-06 22:19:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:22,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:22,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:22,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:22,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:22,086 INFO L87 Difference]: Start difference. First operand 2010 states and 3406 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:23,175 INFO L93 Difference]: Finished difference Result 4998 states and 8608 transitions. [2021-12-06 22:19:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:23,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2021-12-06 22:19:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:23,191 INFO L225 Difference]: With dead ends: 4998 [2021-12-06 22:19:23,191 INFO L226 Difference]: Without dead ends: 3254 [2021-12-06 22:19:23,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:23,195 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 1448 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:23,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 1691 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:19:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2021-12-06 22:19:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3053. [2021-12-06 22:19:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3053 states, 2510 states have (on average 1.6442231075697211) internal successors, (4127), 2518 states have internal predecessors, (4127), 515 states have call successors, (515), 23 states have call predecessors, (515), 27 states have return successors, (562), 513 states have call predecessors, (562), 514 states have call successors, (562) [2021-12-06 22:19:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 5204 transitions. [2021-12-06 22:19:23,354 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 5204 transitions. Word has length 120 [2021-12-06 22:19:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:23,354 INFO L470 AbstractCegarLoop]: Abstraction has 3053 states and 5204 transitions. [2021-12-06 22:19:23,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 5204 transitions. [2021-12-06 22:19:23,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 22:19:23,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:23,362 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] [2021-12-06 22:19:23,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:19:23,363 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:23,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1773974226, now seen corresponding path program 1 times [2021-12-06 22:19:23,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:23,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683291766] [2021-12-06 22:19:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:23,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:19:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:19:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:19:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:19:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:19:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:19:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:23,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:23,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683291766] [2021-12-06 22:19:23,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683291766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:23,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:23,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:23,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290680147] [2021-12-06 22:19:23,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:23,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:23,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:23,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:23,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:23,435 INFO L87 Difference]: Start difference. First operand 3053 states and 5204 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:24,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:24,613 INFO L93 Difference]: Finished difference Result 7512 states and 13023 transitions. [2021-12-06 22:19:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:24,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2021-12-06 22:19:24,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:24,640 INFO L225 Difference]: With dead ends: 7512 [2021-12-06 22:19:24,640 INFO L226 Difference]: Without dead ends: 4944 [2021-12-06 22:19:24,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:24,647 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 1444 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:24,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 1691 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:19:24,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2021-12-06 22:19:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4743. [2021-12-06 22:19:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4743 states, 3955 states have (on average 1.6482932996207333) internal successors, (6519), 3963 states have internal predecessors, (6519), 760 states have call successors, (760), 23 states have call predecessors, (760), 27 states have return successors, (833), 758 states have call predecessors, (833), 759 states have call successors, (833) [2021-12-06 22:19:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 8112 transitions. [2021-12-06 22:19:24,896 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 8112 transitions. Word has length 121 [2021-12-06 22:19:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:24,896 INFO L470 AbstractCegarLoop]: Abstraction has 4743 states and 8112 transitions. [2021-12-06 22:19:24,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 8112 transitions. [2021-12-06 22:19:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 22:19:24,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:24,904 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] [2021-12-06 22:19:24,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:19:24,905 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash -117131631, now seen corresponding path program 1 times [2021-12-06 22:19:24,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:24,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468024638] [2021-12-06 22:19:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:24,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:19:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:19:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:19:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:19:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:19:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:19:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:24,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:24,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468024638] [2021-12-06 22:19:24,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468024638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:24,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:24,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:24,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128178435] [2021-12-06 22:19:24,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:24,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:24,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:24,989 INFO L87 Difference]: Start difference. First operand 4743 states and 8112 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:26,178 INFO L93 Difference]: Finished difference Result 11713 states and 20400 transitions. [2021-12-06 22:19:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:26,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2021-12-06 22:19:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:26,214 INFO L225 Difference]: With dead ends: 11713 [2021-12-06 22:19:26,214 INFO L226 Difference]: Without dead ends: 7787 [2021-12-06 22:19:26,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:26,223 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 1445 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:26,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 1693 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:19:26,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7787 states. [2021-12-06 22:19:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7787 to 7586. [2021-12-06 22:19:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7586 states, 6305 states have (on average 1.6459952418715305) internal successors, (10378), 6313 states have internal predecessors, (10378), 1253 states have call successors, (1253), 23 states have call predecessors, (1253), 27 states have return successors, (1370), 1251 states have call predecessors, (1370), 1252 states have call successors, (1370) [2021-12-06 22:19:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7586 states to 7586 states and 13001 transitions. [2021-12-06 22:19:26,601 INFO L78 Accepts]: Start accepts. Automaton has 7586 states and 13001 transitions. Word has length 122 [2021-12-06 22:19:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:26,601 INFO L470 AbstractCegarLoop]: Abstraction has 7586 states and 13001 transitions. [2021-12-06 22:19:26,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7586 states and 13001 transitions. [2021-12-06 22:19:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 22:19:26,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:26,615 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] [2021-12-06 22:19:26,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:19:26,615 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash 285644202, now seen corresponding path program 1 times [2021-12-06 22:19:26,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:26,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283439083] [2021-12-06 22:19:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:26,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:19:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:19:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:19:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:19:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:19:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:19:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:26,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:26,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283439083] [2021-12-06 22:19:26,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283439083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:26,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:26,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:26,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578798009] [2021-12-06 22:19:26,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:26,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:26,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:26,690 INFO L87 Difference]: Start difference. First operand 7586 states and 13001 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:28,121 INFO L93 Difference]: Finished difference Result 19328 states and 33676 transitions. [2021-12-06 22:19:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:28,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2021-12-06 22:19:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:28,160 INFO L225 Difference]: With dead ends: 19328 [2021-12-06 22:19:28,160 INFO L226 Difference]: Without dead ends: 12961 [2021-12-06 22:19:28,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:28,177 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 1445 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:28,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 1678 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:19:28,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2021-12-06 22:19:28,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 12760. [2021-12-06 22:19:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12760 states, 10657 states have (on average 1.6459604016139626) internal successors, (17541), 10665 states have internal predecessors, (17541), 2075 states have call successors, (2075), 23 states have call predecessors, (2075), 27 states have return successors, (2270), 2073 states have call predecessors, (2270), 2074 states have call successors, (2270) [2021-12-06 22:19:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12760 states to 12760 states and 21886 transitions. [2021-12-06 22:19:28,785 INFO L78 Accepts]: Start accepts. Automaton has 12760 states and 21886 transitions. Word has length 123 [2021-12-06 22:19:28,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:28,786 INFO L470 AbstractCegarLoop]: Abstraction has 12760 states and 21886 transitions. [2021-12-06 22:19:28,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 12760 states and 21886 transitions. [2021-12-06 22:19:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 22:19:28,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:28,800 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] [2021-12-06 22:19:28,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:19:28,800 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:28,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1444368675, now seen corresponding path program 1 times [2021-12-06 22:19:28,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:28,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291983862] [2021-12-06 22:19:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:28,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:19:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:19:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:19:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:19:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:19:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:19:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:28,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:28,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291983862] [2021-12-06 22:19:28,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291983862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:28,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:28,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:28,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297066662] [2021-12-06 22:19:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:28,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:28,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:28,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:28,872 INFO L87 Difference]: Start difference. First operand 12760 states and 21886 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:30,743 INFO L93 Difference]: Finished difference Result 30811 states and 53376 transitions. [2021-12-06 22:19:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:30,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2021-12-06 22:19:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:30,809 INFO L225 Difference]: With dead ends: 30811 [2021-12-06 22:19:30,809 INFO L226 Difference]: Without dead ends: 20274 [2021-12-06 22:19:30,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:30,832 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1439 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:30,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 1698 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:19:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20274 states. [2021-12-06 22:19:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20274 to 20073. [2021-12-06 22:19:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20073 states, 16767 states have (on average 1.6214588179161449) internal successors, (27187), 16775 states have internal predecessors, (27187), 3278 states have call successors, (3278), 23 states have call predecessors, (3278), 27 states have return successors, (3617), 3276 states have call predecessors, (3617), 3277 states have call successors, (3617) [2021-12-06 22:19:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20073 states to 20073 states and 34082 transitions. [2021-12-06 22:19:31,851 INFO L78 Accepts]: Start accepts. Automaton has 20073 states and 34082 transitions. Word has length 124 [2021-12-06 22:19:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:31,851 INFO L470 AbstractCegarLoop]: Abstraction has 20073 states and 34082 transitions. [2021-12-06 22:19:31,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 20073 states and 34082 transitions. [2021-12-06 22:19:31,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 22:19:31,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:31,870 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] [2021-12-06 22:19:31,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:19:31,870 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1015474743, now seen corresponding path program 1 times [2021-12-06 22:19:31,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:31,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034329050] [2021-12-06 22:19:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:31,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:19:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:19:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:19:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:19:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:19:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:19:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:31,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:31,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034329050] [2021-12-06 22:19:31,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034329050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:31,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:31,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:31,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379599082] [2021-12-06 22:19:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:31,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:31,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:31,952 INFO L87 Difference]: Start difference. First operand 20073 states and 34082 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:34,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:34,358 INFO L93 Difference]: Finished difference Result 53253 states and 91910 transitions. [2021-12-06 22:19:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:34,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2021-12-06 22:19:34,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:34,454 INFO L225 Difference]: With dead ends: 53253 [2021-12-06 22:19:34,454 INFO L226 Difference]: Without dead ends: 36080 [2021-12-06 22:19:34,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:34,484 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 1436 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:34,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 1696 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:19:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36080 states. [2021-12-06 22:19:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36080 to 35879. [2021-12-06 22:19:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35879 states, 30123 states have (on average 1.618331507485974) internal successors, (48749), 30131 states have internal predecessors, (48749), 5728 states have call successors, (5728), 23 states have call predecessors, (5728), 27 states have return successors, (6341), 5726 states have call predecessors, (6341), 5727 states have call successors, (6341) [2021-12-06 22:19:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35879 states to 35879 states and 60818 transitions. [2021-12-06 22:19:36,445 INFO L78 Accepts]: Start accepts. Automaton has 35879 states and 60818 transitions. Word has length 125 [2021-12-06 22:19:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:36,446 INFO L470 AbstractCegarLoop]: Abstraction has 35879 states and 60818 transitions. [2021-12-06 22:19:36,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 35879 states and 60818 transitions. [2021-12-06 22:19:36,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 22:19:36,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:36,463 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] [2021-12-06 22:19:36,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:19:36,463 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:36,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:36,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1528862455, now seen corresponding path program 1 times [2021-12-06 22:19:36,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:36,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055223060] [2021-12-06 22:19:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:36,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:19:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:19:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:19:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:19:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:19:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:19:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:36,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:36,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055223060] [2021-12-06 22:19:36,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055223060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:36,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:36,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:36,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464242099] [2021-12-06 22:19:36,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:36,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:36,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:36,532 INFO L87 Difference]: Start difference. First operand 35879 states and 60818 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:39,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:39,854 INFO L93 Difference]: Finished difference Result 98100 states and 168469 transitions. [2021-12-06 22:19:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:39,854 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2021-12-06 22:19:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:40,027 INFO L225 Difference]: With dead ends: 98100 [2021-12-06 22:19:40,027 INFO L226 Difference]: Without dead ends: 66077 [2021-12-06 22:19:40,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:40,083 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 1439 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:40,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 1690 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:19:40,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66077 states. [2021-12-06 22:19:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66077 to 65876. [2021-12-06 22:19:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65876 states, 55607 states have (on average 1.6142212311399644) internal successors, (89762), 55615 states have internal predecessors, (89762), 10241 states have call successors, (10241), 23 states have call predecessors, (10241), 27 states have return successors, (11386), 10239 states have call predecessors, (11386), 10240 states have call successors, (11386) [2021-12-06 22:19:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65876 states to 65876 states and 111389 transitions. [2021-12-06 22:19:43,522 INFO L78 Accepts]: Start accepts. Automaton has 65876 states and 111389 transitions. Word has length 126 [2021-12-06 22:19:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:43,523 INFO L470 AbstractCegarLoop]: Abstraction has 65876 states and 111389 transitions. [2021-12-06 22:19:43,523 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 65876 states and 111389 transitions. [2021-12-06 22:19:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 22:19:43,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:43,539 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] [2021-12-06 22:19:43,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:19:43,539 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:43,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1961864041, now seen corresponding path program 1 times [2021-12-06 22:19:43,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:43,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039326410] [2021-12-06 22:19:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:43,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:19:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:19:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:19:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:19:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:19:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:19:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:43,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:43,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039326410] [2021-12-06 22:19:43,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039326410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:43,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:43,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:19:43,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271998483] [2021-12-06 22:19:43,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:43,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:19:43,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:43,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:19:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:19:43,610 INFO L87 Difference]: Start difference. First operand 65876 states and 111389 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:49,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:49,269 INFO L93 Difference]: Finished difference Result 123761 states and 212902 transitions. [2021-12-06 22:19:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:19:49,270 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2021-12-06 22:19:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:49,658 INFO L225 Difference]: With dead ends: 123761 [2021-12-06 22:19:49,658 INFO L226 Difference]: Without dead ends: 123565 [2021-12-06 22:19:49,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:19:49,704 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 1432 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:49,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 1699 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 22:19:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123565 states. [2021-12-06 22:19:55,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123565 to 123364. [2021-12-06 22:19:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123364 states, 104727 states have (on average 1.609078843087265) internal successors, (168514), 104735 states have internal predecessors, (168514), 18609 states have call successors, (18609), 23 states have call predecessors, (18609), 27 states have return successors, (20800), 18607 states have call predecessors, (20800), 18608 states have call successors, (20800) [2021-12-06 22:19:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123364 states to 123364 states and 207923 transitions. [2021-12-06 22:19:55,639 INFO L78 Accepts]: Start accepts. Automaton has 123364 states and 207923 transitions. Word has length 127 [2021-12-06 22:19:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:55,640 INFO L470 AbstractCegarLoop]: Abstraction has 123364 states and 207923 transitions. [2021-12-06 22:19:55,640 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:19:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 123364 states and 207923 transitions. [2021-12-06 22:19:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 22:19:55,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:55,660 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] [2021-12-06 22:19:55,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:19:55,660 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash -792503190, now seen corresponding path program 1 times [2021-12-06 22:19:55,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:55,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916492892] [2021-12-06 22:19:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:55,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:19:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:19:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:19:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:19:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:19:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:19:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:19:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:19:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:19:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:19:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:19:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:19:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:19:55,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:55,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916492892] [2021-12-06 22:19:55,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916492892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:55,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:55,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 22:19:55,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615807275] [2021-12-06 22:19:55,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:55,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 22:19:55,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 22:19:55,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:19:55,785 INFO L87 Difference]: Start difference. First operand 123364 states and 207923 transitions. Second operand has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 10 states have internal predecessors, (88), 5 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 22:20:11,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:20:11,145 INFO L93 Difference]: Finished difference Result 247043 states and 428380 transitions. [2021-12-06 22:20:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 22:20:11,146 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 10 states have internal predecessors, (88), 5 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 128 [2021-12-06 22:20:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:20:12,027 INFO L225 Difference]: With dead ends: 247043 [2021-12-06 22:20:12,028 INFO L226 Difference]: Without dead ends: 246853 [2021-12-06 22:20:12,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2021-12-06 22:20:12,105 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 5870 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 12919 mSolverCounterSat, 3904 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5870 SdHoareTripleChecker+Valid, 4236 SdHoareTripleChecker+Invalid, 16823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3904 IncrementalHoareTripleChecker+Valid, 12919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:20:12,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5870 Valid, 4236 Invalid, 16823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3904 Valid, 12919 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-06 22:20:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246853 states. [2021-12-06 22:20:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246853 to 245604. [2021-12-06 22:20:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245604 states, 208550 states have (on average 1.6096187964516901) internal successors, (335686), 208456 states have internal predecessors, (335686), 36984 states have call successors, (36984), 60 states have call predecessors, (36984), 69 states have return successors, (44663), 37093 states have call predecessors, (44663), 36981 states have call successors, (44663) [2021-12-06 22:20:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245604 states to 245604 states and 417333 transitions. [2021-12-06 22:20:25,278 INFO L78 Accepts]: Start accepts. Automaton has 245604 states and 417333 transitions. Word has length 128 [2021-12-06 22:20:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:20:25,278 INFO L470 AbstractCegarLoop]: Abstraction has 245604 states and 417333 transitions. [2021-12-06 22:20:25,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 10 states have internal predecessors, (88), 5 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 22:20:25,278 INFO L276 IsEmpty]: Start isEmpty. Operand 245604 states and 417333 transitions. [2021-12-06 22:20:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 22:20:25,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:20:25,318 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] [2021-12-06 22:20:25,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:20:25,318 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:20:25,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:20:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1808812157, now seen corresponding path program 1 times [2021-12-06 22:20:25,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:20:25,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820996744] [2021-12-06 22:20:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:20:25,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:20:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:20:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:20:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:20:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:20:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:20:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:20:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:20:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:20:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:20:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:20:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:20:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:20:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:20:25,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:20:25,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820996744] [2021-12-06 22:20:25,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820996744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:20:25,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:20:25,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:20:25,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516302022] [2021-12-06 22:20:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:20:25,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:20:25,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:20:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:20:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:20:25,413 INFO L87 Difference]: Start difference. First operand 245604 states and 417333 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:20:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:20:42,365 INFO L93 Difference]: Finished difference Result 370259 states and 648008 transitions. [2021-12-06 22:20:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:20:42,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 129 [2021-12-06 22:20:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:20:43,722 INFO L225 Difference]: With dead ends: 370259 [2021-12-06 22:20:43,722 INFO L226 Difference]: Without dead ends: 369833 [2021-12-06 22:20:43,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:20:43,836 INFO L933 BasicCegarLoop]: 857 mSDtfsCounter, 4176 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 2000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 4679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2000 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:20:43,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4190 Valid, 2179 Invalid, 4679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2000 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 22:20:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369833 states. [2021-12-06 22:21:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369833 to 367834. [2021-12-06 22:21:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367834 states, 312364 states have (on average 1.6097949827765043) internal successors, (502842), 312169 states have internal predecessors, (502842), 55359 states have call successors, (55359), 95 states have call predecessors, (55359), 110 states have return successors, (73881), 55579 states have call predecessors, (73881), 55354 states have call successors, (73881) [2021-12-06 22:21:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367834 states to 367834 states and 632082 transitions. [2021-12-06 22:21:04,450 INFO L78 Accepts]: Start accepts. Automaton has 367834 states and 632082 transitions. Word has length 129 [2021-12-06 22:21:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:04,450 INFO L470 AbstractCegarLoop]: Abstraction has 367834 states and 632082 transitions. [2021-12-06 22:21:04,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:21:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 367834 states and 632082 transitions. [2021-12-06 22:21:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 22:21:04,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:04,628 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] [2021-12-06 22:21:04,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:21:04,628 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1386110331, now seen corresponding path program 1 times [2021-12-06 22:21:04,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:04,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917606996] [2021-12-06 22:21:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:04,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:21:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:21:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:21:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:21:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:21:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:21:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:21:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:21:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:21:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:21:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:21:04,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:04,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917606996] [2021-12-06 22:21:04,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917606996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:04,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:04,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:21:04,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118050163] [2021-12-06 22:21:04,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:04,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:21:04,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:21:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:21:04,702 INFO L87 Difference]: Start difference. First operand 367834 states and 632082 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:21:20,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:20,274 INFO L93 Difference]: Finished difference Result 370237 states and 645674 transitions. [2021-12-06 22:21:20,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:21:20,274 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 129 [2021-12-06 22:21:20,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:21,636 INFO L225 Difference]: With dead ends: 370237 [2021-12-06 22:21:21,636 INFO L226 Difference]: Without dead ends: 369201 [2021-12-06 22:21:21,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:21:21,749 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 2316 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:21,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2333 Valid, 1374 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 22:21:22,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369201 states. [2021-12-06 22:21:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369201 to 368309. [2021-12-06 22:21:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368309 states, 312731 states have (on average 1.6097348839737666) internal successors, (503414), 312550 states have internal predecessors, (503414), 55421 states have call successors, (55421), 145 states have call predecessors, (55421), 156 states have return successors, (73956), 55628 states have call predecessors, (73956), 55411 states have call successors, (73956) [2021-12-06 22:21:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368309 states to 368309 states and 632791 transitions. [2021-12-06 22:21:42,876 INFO L78 Accepts]: Start accepts. Automaton has 368309 states and 632791 transitions. Word has length 129 [2021-12-06 22:21:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:42,876 INFO L470 AbstractCegarLoop]: Abstraction has 368309 states and 632791 transitions. [2021-12-06 22:21:42,876 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:21:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 368309 states and 632791 transitions. [2021-12-06 22:21:43,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-06 22:21:43,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:43,693 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:43,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 22:21:43,693 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1804270848, now seen corresponding path program 1 times [2021-12-06 22:21:43,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:43,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110233284] [2021-12-06 22:21:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:43,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:21:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:21:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:21:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:21:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:21:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:21:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:21:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:21:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:21:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:21:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:21:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:21:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:21:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 22:21:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 22:21:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:21:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 22:21:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 22:21:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 22:21:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 22:21:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 22:21:43,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:43,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110233284] [2021-12-06 22:21:43,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110233284] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:43,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214393179] [2021-12-06 22:21:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:43,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:43,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:43,801 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:43,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:21:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:43,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:21:43,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 22:21:44,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:21:44,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214393179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:44,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:21:44,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2021-12-06 22:21:44,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323758038] [2021-12-06 22:21:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:44,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:21:44,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:44,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:21:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:21:44,118 INFO L87 Difference]: Start difference. First operand 368309 states and 632791 transitions. Second operand has 5 states, 4 states have (on average 31.75) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:21:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:58,683 INFO L93 Difference]: Finished difference Result 369267 states and 634212 transitions. [2021-12-06 22:21:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:21:58,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 31.75) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 217 [2021-12-06 22:21:58,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:59,886 INFO L225 Difference]: With dead ends: 369267 [2021-12-06 22:21:59,886 INFO L226 Difference]: Without dead ends: 368321 [2021-12-06 22:22:00,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:22:00,003 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 7 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:00,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2344 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368321 states. [2021-12-06 22:22:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368321 to 368311. [2021-12-06 22:22:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368311 states, 312732 states have (on average 1.6097329342695983) internal successors, (503415), 312552 states have internal predecessors, (503415), 55421 states have call successors, (55421), 145 states have call predecessors, (55421), 157 states have return successors, (73955), 55628 states have call predecessors, (73955), 55411 states have call successors, (73955) [2021-12-06 22:22:20,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368311 states to 368311 states and 632791 transitions. [2021-12-06 22:22:20,889 INFO L78 Accepts]: Start accepts. Automaton has 368311 states and 632791 transitions. Word has length 217 [2021-12-06 22:22:20,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:20,890 INFO L470 AbstractCegarLoop]: Abstraction has 368311 states and 632791 transitions. [2021-12-06 22:22:20,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 31.75) internal successors, (127), 5 states have internal predecessors, (127), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:22:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 368311 states and 632791 transitions. [2021-12-06 22:22:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-06 22:22:21,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:21,698 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:21,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:22:21,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 22:22:21,900 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:21,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2093090238, now seen corresponding path program 1 times [2021-12-06 22:22:21,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:21,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684740839] [2021-12-06 22:22:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:21,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:22:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:22:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:22:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:22:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:22:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:22:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:21,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:22:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:22:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:22:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:22:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:22:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:22:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:22:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 22:22:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 22:22:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:22:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 22:22:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 22:22:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 22:22:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 22:22:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 22:22:22,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:22,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684740839] [2021-12-06 22:22:22,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684740839] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:22,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064349577] [2021-12-06 22:22:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:22,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:22:22,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:22:22,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:22:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:22,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:22:22,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 22:22:22,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:22,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064349577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:22,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:22:22,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2021-12-06 22:22:22,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708012949] [2021-12-06 22:22:22,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:22,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:22:22,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:22,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:22:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:22:22,348 INFO L87 Difference]: Start difference. First operand 368311 states and 632791 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 22:22:37,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:37,230 INFO L93 Difference]: Finished difference Result 369759 states and 634944 transitions. [2021-12-06 22:22:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:22:37,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 217 [2021-12-06 22:22:37,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:38,557 INFO L225 Difference]: With dead ends: 369759 [2021-12-06 22:22:38,557 INFO L226 Difference]: Without dead ends: 368386 [2021-12-06 22:22:38,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:22:38,672 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 47 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:38,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1733 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368386 states. [2021-12-06 22:22:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368386 to 368386. [2021-12-06 22:22:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368386 states, 312802 states have (on average 1.6097403469287281) internal successors, (503530), 312622 states have internal predecessors, (503530), 55421 states have call successors, (55421), 150 states have call predecessors, (55421), 162 states have return successors, (73955), 55628 states have call predecessors, (73955), 55411 states have call successors, (73955) [2021-12-06 22:22:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368386 states to 368386 states and 632906 transitions. [2021-12-06 22:22:59,428 INFO L78 Accepts]: Start accepts. Automaton has 368386 states and 632906 transitions. Word has length 217 [2021-12-06 22:22:59,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:59,429 INFO L470 AbstractCegarLoop]: Abstraction has 368386 states and 632906 transitions. [2021-12-06 22:22:59,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 22:22:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand 368386 states and 632906 transitions. [2021-12-06 22:23:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-06 22:23:00,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:23:00,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:23:00,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:23:00,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 22:23:00,579 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:23:00,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:23:00,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1469648585, now seen corresponding path program 1 times [2021-12-06 22:23:00,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:23:00,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758239520] [2021-12-06 22:23:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:00,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:23:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:23:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:23:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:23:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:23:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:23:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:23:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:23:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:23:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:23:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:23:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:23:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 22:23:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 22:23:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:23:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:23:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:23:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 22:23:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-06 22:23:00,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:23:00,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758239520] [2021-12-06 22:23:00,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758239520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:23:00,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:23:00,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:23:00,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111049010] [2021-12-06 22:23:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:23:00,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:23:00,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:23:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:23:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:23:00,772 INFO L87 Difference]: Start difference. First operand 368386 states and 632906 transitions. Second operand has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:23:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:23:17,418 INFO L93 Difference]: Finished difference Result 370347 states and 645758 transitions. [2021-12-06 22:23:17,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:23:17,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 202 [2021-12-06 22:23:17,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:23:18,799 INFO L225 Difference]: With dead ends: 370347 [2021-12-06 22:23:18,799 INFO L226 Difference]: Without dead ends: 369336 [2021-12-06 22:23:18,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-12-06 22:23:18,915 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1416 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:23:18,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 2172 Invalid, 3070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 22:23:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369336 states. [2021-12-06 22:23:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369336 to 368300. [2021-12-06 22:23:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368300 states, 312740 states have (on average 1.6097653002494086) internal successors, (503438), 312554 states have internal predecessors, (503438), 55407 states have call successors, (55407), 144 states have call predecessors, (55407), 152 states have return successors, (73925), 55616 states have call predecessors, (73925), 55395 states have call successors, (73925) [2021-12-06 22:23:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368300 states to 368300 states and 632770 transitions. [2021-12-06 22:23:39,503 INFO L78 Accepts]: Start accepts. Automaton has 368300 states and 632770 transitions. Word has length 202 [2021-12-06 22:23:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:23:39,504 INFO L470 AbstractCegarLoop]: Abstraction has 368300 states and 632770 transitions. [2021-12-06 22:23:39,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (22), 7 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:23:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 368300 states and 632770 transitions. [2021-12-06 22:23:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-12-06 22:23:40,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:23:40,220 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:23:40,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 22:23:40,220 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:23:40,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:23:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1353780333, now seen corresponding path program 1 times [2021-12-06 22:23:40,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:23:40,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723440337] [2021-12-06 22:23:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:40,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:23:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:23:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:23:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:23:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:23:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:23:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:23:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:23:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:23:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:23:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:23:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:23:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:23:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:23:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:23:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:23:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:23:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:23:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 22:23:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 22:23:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 22:23:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 22:23:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 22:23:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 22:23:40,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:23:40,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723440337] [2021-12-06 22:23:40,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723440337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:23:40,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:23:40,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:23:40,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031264101] [2021-12-06 22:23:40,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:23:40,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:23:40,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:23:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:23:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:23:40,355 INFO L87 Difference]: Start difference. First operand 368300 states and 632770 transitions. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:24:12,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:12,231 INFO L93 Difference]: Finished difference Result 712015 states and 1246472 transitions. [2021-12-06 22:24:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 22:24:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 217 [2021-12-06 22:24:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:15,105 INFO L225 Difference]: With dead ends: 712015 [2021-12-06 22:24:15,105 INFO L226 Difference]: Without dead ends: 710544 [2021-12-06 22:24:15,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 22:24:15,346 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 3250 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 3808 mSolverCounterSat, 1333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3267 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 5141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1333 IncrementalHoareTripleChecker+Valid, 3808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:15,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3267 Valid, 2701 Invalid, 5141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1333 Valid, 3808 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 22:24:15,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710544 states. [2021-12-06 22:24:52,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710544 to 708396. [2021-12-06 22:24:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708396 states, 601465 states have (on average 1.6127206071841254) internal successors, (969995), 601072 states have internal predecessors, (969995), 106624 states have call successors, (106624), 285 states have call predecessors, (106624), 306 states have return successors, (143451), 107068 states have call predecessors, (143451), 106600 states have call successors, (143451) [2021-12-06 22:24:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708396 states to 708396 states and 1220070 transitions. [2021-12-06 22:24:56,198 INFO L78 Accepts]: Start accepts. Automaton has 708396 states and 1220070 transitions. Word has length 217 [2021-12-06 22:24:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:56,199 INFO L470 AbstractCegarLoop]: Abstraction has 708396 states and 1220070 transitions. [2021-12-06 22:24:56,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:24:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 708396 states and 1220070 transitions. [2021-12-06 22:24:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-06 22:24:57,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:57,565 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:57,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 22:24:57,566 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1629782367, now seen corresponding path program 1 times [2021-12-06 22:24:57,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:57,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273192929] [2021-12-06 22:24:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:57,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:24:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:24:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:24:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:24:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:24:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:24:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:24:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:24:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:24:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:24:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:24:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:24:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:24:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:24:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:24:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:24:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:24:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:24:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 22:24:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 22:24:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 22:24:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 22:24:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 22:24:57,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:57,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273192929] [2021-12-06 22:24:57,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273192929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:57,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:57,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 22:24:57,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146815705] [2021-12-06 22:24:57,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:57,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:24:57,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:57,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:24:57,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:24:57,710 INFO L87 Difference]: Start difference. First operand 708396 states and 1220070 transitions. Second operand has 14 states, 13 states have (on average 10.538461538461538) internal successors, (137), 7 states have internal predecessors, (137), 5 states have call successors, (25), 9 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 22:25:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:30,548 INFO L93 Difference]: Finished difference Result 713409 states and 1246590 transitions. [2021-12-06 22:25:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 22:25:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.538461538461538) internal successors, (137), 7 states have internal predecessors, (137), 5 states have call successors, (25), 9 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 218 [2021-12-06 22:25:30,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:33,473 INFO L225 Difference]: With dead ends: 713409 [2021-12-06 22:25:33,473 INFO L226 Difference]: Without dead ends: 710326 [2021-12-06 22:25:33,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 22:25:33,726 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1909 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 4049 mSolverCounterSat, 886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 4935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 4049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:33,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1927 Valid, 3148 Invalid, 4935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [886 Valid, 4049 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 22:25:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710326 states. [2021-12-06 22:26:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710326 to 708223. [2021-12-06 22:26:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708223 states, 601328 states have (on average 1.6127155229758134) internal successors, (969771), 600931 states have internal predecessors, (969771), 106601 states have call successors, (106601), 274 states have call predecessors, (106601), 293 states have return successors, (143400), 107045 states have call predecessors, (143400), 106571 states have call successors, (143400) [2021-12-06 22:26:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708223 states to 708223 states and 1219772 transitions. [2021-12-06 22:26:17,176 INFO L78 Accepts]: Start accepts. Automaton has 708223 states and 1219772 transitions. Word has length 218 [2021-12-06 22:26:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:17,177 INFO L470 AbstractCegarLoop]: Abstraction has 708223 states and 1219772 transitions. [2021-12-06 22:26:17,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.538461538461538) internal successors, (137), 7 states have internal predecessors, (137), 5 states have call successors, (25), 9 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 22:26:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 708223 states and 1219772 transitions. [2021-12-06 22:26:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-06 22:26:18,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:18,751 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:18,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 22:26:18,751 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:18,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1346057258, now seen corresponding path program 1 times [2021-12-06 22:26:18,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:18,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942098190] [2021-12-06 22:26:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:18,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:26:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:26:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:26:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:26:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:26:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:26:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:26:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:26:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:26:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:26:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:26:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:26:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:26:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:26:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:26:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:26:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 22:26:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 22:26:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 22:26:19,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:19,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942098190] [2021-12-06 22:26:19,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942098190] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:26:19,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651181444] [2021-12-06 22:26:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:19,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:26:19,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:26:19,108 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:26:19,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:26:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:19,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 22:26:19,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:26:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:26:19,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:26:19,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651181444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:19,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:26:19,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [22] total 34 [2021-12-06 22:26:19,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151394726] [2021-12-06 22:26:19,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:19,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:26:19,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:26:19,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 22:26:19,880 INFO L87 Difference]: Start difference. First operand 708223 states and 1219772 transitions. Second operand has 14 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 7 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2021-12-06 22:26:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:53,627 INFO L93 Difference]: Finished difference Result 713922 states and 1228471 transitions. [2021-12-06 22:26:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:26:53,627 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 7 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) Word has length 203 [2021-12-06 22:26:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:56,341 INFO L225 Difference]: With dead ends: 713922 [2021-12-06 22:26:56,341 INFO L226 Difference]: Without dead ends: 711055 [2021-12-06 22:26:56,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2021-12-06 22:26:56,583 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1209 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 4868 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 4255 SdHoareTripleChecker+Invalid, 5130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 4868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:56,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1296 Valid, 4255 Invalid, 5130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 4868 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 22:26:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711055 states. [2021-12-06 22:27:37,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711055 to 710058. [2021-12-06 22:27:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710058 states, 602728 states have (on average 1.6123856864124448) internal successors, (971830), 602367 states have internal predecessors, (971830), 106901 states have call successors, (106901), 390 states have call predecessors, (106901), 428 states have return successors, (143804), 107351 states have call predecessors, (143804), 106861 states have call successors, (143804) [2021-12-06 22:27:40,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710058 states to 710058 states and 1222535 transitions. [2021-12-06 22:27:40,773 INFO L78 Accepts]: Start accepts. Automaton has 710058 states and 1222535 transitions. Word has length 203 [2021-12-06 22:27:40,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:40,773 INFO L470 AbstractCegarLoop]: Abstraction has 710058 states and 1222535 transitions. [2021-12-06 22:27:40,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 11.615384615384615) internal successors, (151), 13 states have internal predecessors, (151), 7 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2021-12-06 22:27:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 710058 states and 1222535 transitions. [2021-12-06 22:27:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-06 22:27:42,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:42,238 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:42,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:27:42,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 22:27:42,440 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:42,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:42,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1317267654, now seen corresponding path program 1 times [2021-12-06 22:27:42,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:42,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272617133] [2021-12-06 22:27:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:42,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:27:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:27:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:27:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:27:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:27:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:27:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:27:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:27:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:27:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:27:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:27:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:27:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:27:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:27:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:27:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 22:27:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 22:27:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 22:27:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 22:27:42,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:42,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272617133] [2021-12-06 22:27:42,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272617133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:42,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419630888] [2021-12-06 22:27:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:42,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:42,659 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:42,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10004ac6-c302-43e4-8960-80cea933b1c0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:27:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 22:27:42,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 22:27:43,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:27:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 22:27:43,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419630888] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:27:43,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:27:43,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 9] total 28 [2021-12-06 22:27:43,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975738062] [2021-12-06 22:27:43,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:27:43,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 22:27:43,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 22:27:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:27:43,430 INFO L87 Difference]: Start difference. First operand 710058 states and 1222535 transitions. Second operand has 28 states, 27 states have (on average 11.444444444444445) internal successors, (309), 23 states have internal predecessors, (309), 6 states have call successors, (51), 10 states have call predecessors, (51), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44)