./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product36.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_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/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_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/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_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/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 f422b02f04909f595cd81c18f65f163bde7189dd9d2c25d22c48d8d4d89787b5 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:21:17,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:21:17,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:21:17,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:21:17,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:21:17,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:21:17,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:21:17,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:21:17,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:21:17,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:21:17,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:21:17,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:21:17,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:21:17,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:21:17,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:21:17,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:21:17,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:21:17,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:21:17,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:21:17,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:21:17,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:21:17,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:21:17,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:21:17,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:21:17,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:21:17,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:21:17,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:21:17,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:21:17,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:21:17,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:21:17,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:21:17,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:21:17,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:21:17,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:21:17,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:21:17,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:21:17,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:21:17,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:21:17,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:21:17,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:21:17,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:21:17,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:21:17,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:21:17,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:21:17,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:21:17,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:21:17,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:21:17,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:21:17,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:21:17,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:21:17,202 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:21:17,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:21:17,202 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:21:17,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:21:17,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:21:17,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:21:17,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:21:17,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:21:17,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:21:17,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:21:17,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:21:17,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:21:17,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:21:17,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:21:17,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:21:17,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:21:17,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:21:17,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:21:17,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:21:17,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:21:17,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:21:17,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:21:17,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:21:17,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:21:17,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:21:17,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:21:17,205 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_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f422b02f04909f595cd81c18f65f163bde7189dd9d2c25d22c48d8d4d89787b5 [2021-12-06 22:21:17,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:21:17,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:21:17,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:21:17,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:21:17,405 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:21:17,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c [2021-12-06 22:21:17,448 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/data/b35b6c3ba/2855418780354da38cff237a1cc2a92c/FLAG9306f4d0a [2021-12-06 22:21:17,892 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:21:17,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c [2021-12-06 22:21:17,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/data/b35b6c3ba/2855418780354da38cff237a1cc2a92c/FLAG9306f4d0a [2021-12-06 22:21:17,916 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/data/b35b6c3ba/2855418780354da38cff237a1cc2a92c [2021-12-06 22:21:17,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:21:17,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:21:17,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:21:17,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:21:17,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:21:17,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:21:17" (1/1) ... [2021-12-06 22:21:17,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fedba04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:17, skipping insertion in model container [2021-12-06 22:21:17,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:21:17" (1/1) ... [2021-12-06 22:21:17,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:21:17,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:21:18,196 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_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c[27504,27517] [2021-12-06 22:21:18,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:21:18,275 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:21:18,320 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_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c[27504,27517] [2021-12-06 22:21:18,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:21:18,373 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:21:18,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18 WrapperNode [2021-12-06 22:21:18,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:21:18,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:21:18,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:21:18,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:21:18,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,435 INFO L137 Inliner]: procedures = 113, calls = 154, calls flagged for inlining = 41, calls inlined = 36, statements flattened = 698 [2021-12-06 22:21:18,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:21:18,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:21:18,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:21:18,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:21:18,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:21:18,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:21:18,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:21:18,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:21:18,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (1/1) ... [2021-12-06 22:21:18,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:21:18,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:18,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:21:18,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:21:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-06 22:21:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-06 22:21:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-06 22:21:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-06 22:21:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 22:21:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 22:21:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-12-06 22:21:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-12-06 22:21:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 22:21:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 22:21:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 22:21:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 22:21:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 22:21:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 22:21:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 22:21:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-06 22:21:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-06 22:21:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 22:21:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 22:21:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:21:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-06 22:21:18,538 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-06 22:21:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 22:21:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 22:21:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 22:21:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 22:21:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 22:21:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 22:21:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:21:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-06 22:21:18,539 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-06 22:21:18,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:21:18,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:21:18,662 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:21:18,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:21:19,023 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:21:19,030 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:21:19,030 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:21:19,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:21:19 BoogieIcfgContainer [2021-12-06 22:21:19,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:21:19,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:21:19,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:21:19,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:21:19,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:21:17" (1/3) ... [2021-12-06 22:21:19,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cacbe29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:21:19, skipping insertion in model container [2021-12-06 22:21:19,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:21:18" (2/3) ... [2021-12-06 22:21:19,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cacbe29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:21:19, skipping insertion in model container [2021-12-06 22:21:19,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:21:19" (3/3) ... [2021-12-06 22:21:19,038 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product36.cil.c [2021-12-06 22:21:19,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:21:19,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:21:19,078 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:21:19,083 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 22:21:19,083 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:21:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 185 states have (on average 1.5513513513513513) internal successors, (287), 188 states have internal predecessors, (287), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-06 22:21:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:21:19,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:19,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:19,111 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:19,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:19,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1065275904, now seen corresponding path program 1 times [2021-12-06 22:21:19,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:19,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061922017] [2021-12-06 22:21:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:19,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:21:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:21:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:21:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:21:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 22:21:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:21:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:21:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 22:21:19,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:19,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061922017] [2021-12-06 22:21:19,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061922017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:19,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847370604] [2021-12-06 22:21:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:19,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:19,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:19,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:19,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:21:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:19,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 22:21:19,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:21:19,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:21:19,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847370604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:19,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:21:19,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-06 22:21:19,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025802871] [2021-12-06 22:21:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:19,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:21:19,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:21:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:21:19,764 INFO L87 Difference]: Start difference. First operand has 232 states, 185 states have (on average 1.5513513513513513) internal successors, (287), 188 states have internal predecessors, (287), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:19,808 INFO L93 Difference]: Finished difference Result 370 states and 545 transitions. [2021-12-06 22:21:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:21:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2021-12-06 22:21:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:19,822 INFO L225 Difference]: With dead ends: 370 [2021-12-06 22:21:19,822 INFO L226 Difference]: Without dead ends: 225 [2021-12-06 22:21:19,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:21:19,829 INFO L933 BasicCegarLoop]: 345 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, 345 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 22:21:19,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-06 22:21:19,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-12-06 22:21:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 179 states have (on average 1.541899441340782) internal successors, (276), 181 states have internal predecessors, (276), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-06 22:21:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 337 transitions. [2021-12-06 22:21:19,877 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 337 transitions. Word has length 78 [2021-12-06 22:21:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:19,878 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 337 transitions. [2021-12-06 22:21:19,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 337 transitions. [2021-12-06 22:21:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 22:21:19,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:19,884 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:19,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:21:20,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 22:21:20,086 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:20,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1762266967, now seen corresponding path program 1 times [2021-12-06 22:21:20,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:20,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624298845] [2021-12-06 22:21:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:20,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:21:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:21:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 22:21:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 22:21:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:21:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:21:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:21:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 22:21:20,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:20,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624298845] [2021-12-06 22:21:20,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624298845] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:20,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058993239] [2021-12-06 22:21:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:20,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:20,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:20,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:20,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:21:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:21:20,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:21:20,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:21:20,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058993239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:20,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:21:20,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-06 22:21:20,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30370775] [2021-12-06 22:21:20,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:20,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:21:20,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:20,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:21:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:21:20,570 INFO L87 Difference]: Start difference. First operand 225 states and 337 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:20,597 INFO L93 Difference]: Finished difference Result 360 states and 523 transitions. [2021-12-06 22:21:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:21:20,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2021-12-06 22:21:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:20,601 INFO L225 Difference]: With dead ends: 360 [2021-12-06 22:21:20,601 INFO L226 Difference]: Without dead ends: 228 [2021-12-06 22:21:20,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 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 22:21:20,603 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 668 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 22:21:20,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 668 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-06 22:21:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2021-12-06 22:21:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 181 states have (on average 1.5359116022099448) internal successors, (278), 183 states have internal predecessors, (278), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2021-12-06 22:21:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 339 transitions. [2021-12-06 22:21:20,623 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 339 transitions. Word has length 79 [2021-12-06 22:21:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:20,623 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 339 transitions. [2021-12-06 22:21:20,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 339 transitions. [2021-12-06 22:21:20,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 22:21:20,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:20,627 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 22:21:20,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:21:20,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:20,829 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:20,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:20,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1824935857, now seen corresponding path program 1 times [2021-12-06 22:21:20,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:20,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542810027] [2021-12-06 22:21:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:20,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:21:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 22:21:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:21:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:21:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:21:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:21:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:21:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:21:21,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:21,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542810027] [2021-12-06 22:21:21,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542810027] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:21,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387530684] [2021-12-06 22:21:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:21,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:21,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:21,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:21,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:21:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:21:21,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 22:21:21,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:21:21,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387530684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:21,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:21:21,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-06 22:21:21,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649043349] [2021-12-06 22:21:21,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:21,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:21:21,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:21:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:21:21,292 INFO L87 Difference]: Start difference. First operand 227 states and 339 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:21:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:21,340 INFO L93 Difference]: Finished difference Result 447 states and 671 transitions. [2021-12-06 22:21:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:21:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 84 [2021-12-06 22:21:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:21,343 INFO L225 Difference]: With dead ends: 447 [2021-12-06 22:21:21,344 INFO L226 Difference]: Without dead ends: 229 [2021-12-06 22:21:21,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:21:21,345 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 108 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1198 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 22:21:21,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1198 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-06 22:21:21,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-12-06 22:21:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 182 states have (on average 1.532967032967033) internal successors, (279), 185 states have internal predecessors, (279), 31 states have call successors, (31), 14 states have call predecessors, (31), 15 states have return successors, (32), 29 states have call predecessors, (32), 30 states have call successors, (32) [2021-12-06 22:21:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 342 transitions. [2021-12-06 22:21:21,365 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 342 transitions. Word has length 84 [2021-12-06 22:21:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:21,366 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 342 transitions. [2021-12-06 22:21:21,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:21:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 342 transitions. [2021-12-06 22:21:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 22:21:21,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:21,368 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 22:21:21,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 22:21:21,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:21,570 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:21,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:21,571 INFO L85 PathProgramCache]: Analyzing trace with hash -388126467, now seen corresponding path program 1 times [2021-12-06 22:21:21,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:21,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039534576] [2021-12-06 22:21:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:21,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:21:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:21:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:21:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:21:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:21:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:21:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:21:21,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:21,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039534576] [2021-12-06 22:21:21,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039534576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:21,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:21,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:21:21,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944383498] [2021-12-06 22:21:21,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:21,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:21:21,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:21,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:21:21,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:21:21,775 INFO L87 Difference]: Start difference. First operand 229 states and 342 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:21:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:22,559 INFO L93 Difference]: Finished difference Result 577 states and 897 transitions. [2021-12-06 22:21:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:21:22,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 85 [2021-12-06 22:21:22,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:22,563 INFO L225 Difference]: With dead ends: 577 [2021-12-06 22:21:22,563 INFO L226 Difference]: Without dead ends: 367 [2021-12-06 22:21:22,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:21:22,565 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 632 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:22,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1141 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:21:22,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-12-06 22:21:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 229. [2021-12-06 22:21:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 182 states have (on average 1.532967032967033) internal successors, (279), 185 states have internal predecessors, (279), 31 states have call successors, (31), 14 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2021-12-06 22:21:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 341 transitions. [2021-12-06 22:21:22,589 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 341 transitions. Word has length 85 [2021-12-06 22:21:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:22,589 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 341 transitions. [2021-12-06 22:21:22,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:21:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 341 transitions. [2021-12-06 22:21:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 22:21:22,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:22,591 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 22:21:22,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:21:22,591 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash 466057523, now seen corresponding path program 2 times [2021-12-06 22:21:22,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703270344] [2021-12-06 22:21:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:22,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:21:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:21:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:21:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:21:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:21:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:21:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:21:22,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:22,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703270344] [2021-12-06 22:21:22,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703270344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:22,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:22,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:21:22,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042572575] [2021-12-06 22:21:22,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:22,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:21:22,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:22,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:21:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:21:22,669 INFO L87 Difference]: Start difference. First operand 229 states and 341 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:21:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:23,412 INFO L93 Difference]: Finished difference Result 579 states and 900 transitions. [2021-12-06 22:21:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:21:23,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 86 [2021-12-06 22:21:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:23,417 INFO L225 Difference]: With dead ends: 579 [2021-12-06 22:21:23,417 INFO L226 Difference]: Without dead ends: 369 [2021-12-06 22:21:23,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:21:23,419 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 633 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:23,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 1127 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:21:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-06 22:21:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 231. [2021-12-06 22:21:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 183 states have (on average 1.530054644808743) internal successors, (280), 187 states have internal predecessors, (280), 31 states have call successors, (31), 14 states have call predecessors, (31), 16 states have return successors, (33), 29 states have call predecessors, (33), 30 states have call successors, (33) [2021-12-06 22:21:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 344 transitions. [2021-12-06 22:21:23,446 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 344 transitions. Word has length 86 [2021-12-06 22:21:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:23,446 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 344 transitions. [2021-12-06 22:21:23,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:21:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 344 transitions. [2021-12-06 22:21:23,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 22:21:23,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:23,448 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 22:21:23,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:21:23,448 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1107508456, now seen corresponding path program 1 times [2021-12-06 22:21:23,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:23,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793029490] [2021-12-06 22:21:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:23,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:21:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:21:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:21:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:21:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:21:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:21:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:23,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793029490] [2021-12-06 22:21:23,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793029490] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131022440] [2021-12-06 22:21:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:23,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:23,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:23,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:23,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:21:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:23,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:21:23,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:23,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:21:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:23,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131022440] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:21:23,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:21:23,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-06 22:21:23,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625868654] [2021-12-06 22:21:23,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:21:23,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:21:23,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:21:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:23,831 INFO L87 Difference]: Start difference. First operand 231 states and 344 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:21:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:24,571 INFO L93 Difference]: Finished difference Result 684 states and 1091 transitions. [2021-12-06 22:21:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:21:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 87 [2021-12-06 22:21:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:24,576 INFO L225 Difference]: With dead ends: 684 [2021-12-06 22:21:24,576 INFO L226 Difference]: Without dead ends: 552 [2021-12-06 22:21:24,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:21:24,578 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 1079 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:24,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1511 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:21:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-12-06 22:21:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 390. [2021-12-06 22:21:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 333 states have (on average 1.6516516516516517) internal successors, (550), 337 states have internal predecessors, (550), 40 states have call successors, (40), 14 states have call predecessors, (40), 16 states have return successors, (42), 38 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-06 22:21:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 632 transitions. [2021-12-06 22:21:24,611 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 632 transitions. Word has length 87 [2021-12-06 22:21:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:24,611 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 632 transitions. [2021-12-06 22:21:24,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 22:21:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 632 transitions. [2021-12-06 22:21:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 22:21:24,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:24,614 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 22:21:24,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:21:24,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 22:21:24,815 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:24,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash 53577619, now seen corresponding path program 1 times [2021-12-06 22:21:24,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:24,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993763347] [2021-12-06 22:21:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:24,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:21:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:21:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:21:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:21:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:21:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:21:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:24,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:24,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993763347] [2021-12-06 22:21:24,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993763347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:24,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:24,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:24,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346185990] [2021-12-06 22:21:24,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:24,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:24,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:24,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:24,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:24,927 INFO L87 Difference]: Start difference. First operand 390 states and 632 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:25,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:25,528 INFO L93 Difference]: Finished difference Result 1056 states and 1763 transitions. [2021-12-06 22:21:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:25,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2021-12-06 22:21:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:25,534 INFO L225 Difference]: With dead ends: 1056 [2021-12-06 22:21:25,534 INFO L226 Difference]: Without dead ends: 694 [2021-12-06 22:21:25,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:25,536 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 628 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:25,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 920 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:21:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-12-06 22:21:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 548. [2021-12-06 22:21:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 482 states have (on average 1.6867219917012448) internal successors, (813), 486 states have internal predecessors, (813), 49 states have call successors, (49), 14 states have call predecessors, (49), 16 states have return successors, (51), 47 states have call predecessors, (51), 48 states have call successors, (51) [2021-12-06 22:21:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 913 transitions. [2021-12-06 22:21:25,575 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 913 transitions. Word has length 94 [2021-12-06 22:21:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:25,575 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 913 transitions. [2021-12-06 22:21:25,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 913 transitions. [2021-12-06 22:21:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 22:21:25,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:25,579 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 22:21:25,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:21:25,579 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:25,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:25,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1247240784, now seen corresponding path program 1 times [2021-12-06 22:21:25,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:25,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185331251] [2021-12-06 22:21:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:25,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 22:21:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:21:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:21:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:21:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:21:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:21:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:25,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:25,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185331251] [2021-12-06 22:21:25,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185331251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:25,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:25,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:25,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319207288] [2021-12-06 22:21:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:25,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:25,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:25,657 INFO L87 Difference]: Start difference. First operand 548 states and 913 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:26,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:26,267 INFO L93 Difference]: Finished difference Result 1433 states and 2441 transitions. [2021-12-06 22:21:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:26,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 95 [2021-12-06 22:21:26,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:26,273 INFO L225 Difference]: With dead ends: 1433 [2021-12-06 22:21:26,273 INFO L226 Difference]: Without dead ends: 931 [2021-12-06 22:21:26,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:26,275 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 627 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:26,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 913 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:21:26,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-12-06 22:21:26,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 785. [2021-12-06 22:21:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 704 states have (on average 1.7116477272727273) internal successors, (1205), 708 states have internal predecessors, (1205), 64 states have call successors, (64), 14 states have call predecessors, (64), 16 states have return successors, (66), 62 states have call predecessors, (66), 63 states have call successors, (66) [2021-12-06 22:21:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1335 transitions. [2021-12-06 22:21:26,306 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1335 transitions. Word has length 95 [2021-12-06 22:21:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:26,306 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 1335 transitions. [2021-12-06 22:21:26,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1335 transitions. [2021-12-06 22:21:26,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 22:21:26,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:26,309 INFO L514 BasicCegarLoop]: trace histogram [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 22:21:26,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:21:26,309 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:26,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash 827177237, now seen corresponding path program 1 times [2021-12-06 22:21:26,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:26,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496519781] [2021-12-06 22:21:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:26,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:21:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:21:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:21:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:21:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:21:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:21:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:26,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:26,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496519781] [2021-12-06 22:21:26,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496519781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:26,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:26,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:26,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857483124] [2021-12-06 22:21:26,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:26,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:26,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:26,374 INFO L87 Difference]: Start difference. First operand 785 states and 1335 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:26,943 INFO L93 Difference]: Finished difference Result 2054 states and 3545 transitions. [2021-12-06 22:21:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:26,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 96 [2021-12-06 22:21:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:26,950 INFO L225 Difference]: With dead ends: 2054 [2021-12-06 22:21:26,950 INFO L226 Difference]: Without dead ends: 1334 [2021-12-06 22:21:26,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:26,952 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 619 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:26,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 954 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:21:26,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-12-06 22:21:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1188. [2021-12-06 22:21:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1083 states have (on average 1.7202216066481995) internal successors, (1863), 1087 states have internal predecessors, (1863), 88 states have call successors, (88), 14 states have call predecessors, (88), 16 states have return successors, (90), 86 states have call predecessors, (90), 87 states have call successors, (90) [2021-12-06 22:21:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 2041 transitions. [2021-12-06 22:21:26,993 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 2041 transitions. Word has length 96 [2021-12-06 22:21:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:26,994 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 2041 transitions. [2021-12-06 22:21:26,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 2041 transitions. [2021-12-06 22:21:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 22:21:26,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:26,998 INFO L514 BasicCegarLoop]: trace histogram [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 22:21:26,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:21:26,998 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:26,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1403867838, now seen corresponding path program 1 times [2021-12-06 22:21:26,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:26,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088710649] [2021-12-06 22:21:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:26,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:21:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:21:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:21:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:21:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:21:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:21:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:27,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:27,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088710649] [2021-12-06 22:21:27,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088710649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:27,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:27,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:27,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456551237] [2021-12-06 22:21:27,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:27,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:27,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:27,071 INFO L87 Difference]: Start difference. First operand 1188 states and 2041 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:27,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:27,635 INFO L93 Difference]: Finished difference Result 3059 states and 5316 transitions. [2021-12-06 22:21:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:27,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 97 [2021-12-06 22:21:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:27,646 INFO L225 Difference]: With dead ends: 3059 [2021-12-06 22:21:27,646 INFO L226 Difference]: Without dead ends: 1984 [2021-12-06 22:21:27,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:27,650 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 624 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:27,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 919 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:21:27,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-12-06 22:21:27,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1838. [2021-12-06 22:21:27,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1694 states have (on average 1.7207792207792207) internal successors, (2915), 1698 states have internal predecessors, (2915), 127 states have call successors, (127), 14 states have call predecessors, (127), 16 states have return successors, (129), 125 states have call predecessors, (129), 126 states have call successors, (129) [2021-12-06 22:21:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 3171 transitions. [2021-12-06 22:21:27,717 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 3171 transitions. Word has length 97 [2021-12-06 22:21:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:27,717 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 3171 transitions. [2021-12-06 22:21:27,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 3171 transitions. [2021-12-06 22:21:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 22:21:27,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:27,723 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:27,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:21:27,723 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:27,723 INFO L85 PathProgramCache]: Analyzing trace with hash 990625047, now seen corresponding path program 1 times [2021-12-06 22:21:27,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:27,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451991740] [2021-12-06 22:21:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:27,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:21:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 22:21:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:21:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:21:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:21:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:21:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:27,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:27,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451991740] [2021-12-06 22:21:27,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451991740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:27,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:27,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:27,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210852028] [2021-12-06 22:21:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:27,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:27,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:27,790 INFO L87 Difference]: Start difference. First operand 1838 states and 3171 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:28,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:28,332 INFO L93 Difference]: Finished difference Result 4714 states and 8216 transitions. [2021-12-06 22:21:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:28,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2021-12-06 22:21:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:28,346 INFO L225 Difference]: With dead ends: 4714 [2021-12-06 22:21:28,346 INFO L226 Difference]: Without dead ends: 3069 [2021-12-06 22:21:28,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:28,349 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 615 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:28,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 930 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:21:28,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-12-06 22:21:28,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2923. [2021-12-06 22:21:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2713 states have (on average 1.7176557316623664) internal successors, (4660), 2717 states have internal predecessors, (4660), 193 states have call successors, (193), 14 states have call predecessors, (193), 16 states have return successors, (195), 191 states have call predecessors, (195), 192 states have call successors, (195) [2021-12-06 22:21:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5048 transitions. [2021-12-06 22:21:28,457 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5048 transitions. Word has length 98 [2021-12-06 22:21:28,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:28,457 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5048 transitions. [2021-12-06 22:21:28,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5048 transitions. [2021-12-06 22:21:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 22:21:28,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:28,465 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:28,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:21:28,465 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1327158592, now seen corresponding path program 1 times [2021-12-06 22:21:28,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:28,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875323675] [2021-12-06 22:21:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:28,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:21:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:21:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:21:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:21:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:21:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:21:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:28,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:28,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875323675] [2021-12-06 22:21:28,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875323675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:28,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:28,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:28,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078982749] [2021-12-06 22:21:28,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:28,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:28,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:28,523 INFO L87 Difference]: Start difference. First operand 2923 states and 5048 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:29,104 INFO L93 Difference]: Finished difference Result 7294 states and 12756 transitions. [2021-12-06 22:21:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:29,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2021-12-06 22:21:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:29,125 INFO L225 Difference]: With dead ends: 7294 [2021-12-06 22:21:29,125 INFO L226 Difference]: Without dead ends: 4764 [2021-12-06 22:21:29,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:29,129 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 614 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:29,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 909 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:21:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2021-12-06 22:21:29,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4618. [2021-12-06 22:21:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 4291 states have (on average 1.718247494756467) internal successors, (7373), 4295 states have internal predecessors, (7373), 310 states have call successors, (310), 14 states have call predecessors, (310), 16 states have return successors, (312), 308 states have call predecessors, (312), 309 states have call successors, (312) [2021-12-06 22:21:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 7995 transitions. [2021-12-06 22:21:29,333 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 7995 transitions. Word has length 99 [2021-12-06 22:21:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:29,334 INFO L470 AbstractCegarLoop]: Abstraction has 4618 states and 7995 transitions. [2021-12-06 22:21:29,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 7995 transitions. [2021-12-06 22:21:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 22:21:29,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:29,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:29,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:21:29,344 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:29,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:29,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1153535719, now seen corresponding path program 1 times [2021-12-06 22:21:29,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:29,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068651404] [2021-12-06 22:21:29,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:29,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:21:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:21:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:21:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:21:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:21:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:21:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:29,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:29,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068651404] [2021-12-06 22:21:29,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068651404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:29,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:29,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:29,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461928441] [2021-12-06 22:21:29,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:29,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:29,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:29,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:29,411 INFO L87 Difference]: Start difference. First operand 4618 states and 7995 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:30,073 INFO L93 Difference]: Finished difference Result 12081 states and 21119 transitions. [2021-12-06 22:21:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2021-12-06 22:21:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:30,110 INFO L225 Difference]: With dead ends: 12081 [2021-12-06 22:21:30,110 INFO L226 Difference]: Without dead ends: 8024 [2021-12-06 22:21:30,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:30,117 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 616 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:30,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 937 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:21:30,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2021-12-06 22:21:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7878. [2021-12-06 22:21:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7878 states, 7335 states have (on average 1.713019768234492) internal successors, (12565), 7339 states have internal predecessors, (12565), 526 states have call successors, (526), 14 states have call predecessors, (526), 16 states have return successors, (528), 524 states have call predecessors, (528), 525 states have call successors, (528) [2021-12-06 22:21:30,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 13619 transitions. [2021-12-06 22:21:30,364 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 13619 transitions. Word has length 100 [2021-12-06 22:21:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:30,364 INFO L470 AbstractCegarLoop]: Abstraction has 7878 states and 13619 transitions. [2021-12-06 22:21:30,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 13619 transitions. [2021-12-06 22:21:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 22:21:30,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:30,384 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:30,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:21:30,384 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:30,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash 288373842, now seen corresponding path program 1 times [2021-12-06 22:21:30,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:30,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485020460] [2021-12-06 22:21:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:30,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:21:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:21:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:21:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:21:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:21:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:21:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:30,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:30,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485020460] [2021-12-06 22:21:30,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485020460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:30,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:30,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:30,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535120876] [2021-12-06 22:21:30,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:30,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:30,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:30,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:30,447 INFO L87 Difference]: Start difference. First operand 7878 states and 13619 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:31,210 INFO L93 Difference]: Finished difference Result 18176 states and 31406 transitions. [2021-12-06 22:21:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2021-12-06 22:21:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:31,243 INFO L225 Difference]: With dead ends: 18176 [2021-12-06 22:21:31,244 INFO L226 Difference]: Without dead ends: 11635 [2021-12-06 22:21:31,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:31,253 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 617 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:31,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 876 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:21:31,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11635 states. [2021-12-06 22:21:31,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11635 to 11489. [2021-12-06 22:21:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11489 states, 10946 states have (on average 1.6890188196601499) internal successors, (18488), 10950 states have internal predecessors, (18488), 526 states have call successors, (526), 14 states have call predecessors, (526), 16 states have return successors, (528), 524 states have call predecessors, (528), 525 states have call successors, (528) [2021-12-06 22:21:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11489 states to 11489 states and 19542 transitions. [2021-12-06 22:21:31,611 INFO L78 Accepts]: Start accepts. Automaton has 11489 states and 19542 transitions. Word has length 101 [2021-12-06 22:21:31,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:31,612 INFO L470 AbstractCegarLoop]: Abstraction has 11489 states and 19542 transitions. [2021-12-06 22:21:31,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 11489 states and 19542 transitions. [2021-12-06 22:21:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 22:21:31,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:31,628 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:31,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:21:31,628 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -464922725, now seen corresponding path program 1 times [2021-12-06 22:21:31,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:31,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493485851] [2021-12-06 22:21:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:31,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:21:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:21:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:21:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:21:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:21:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:21:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:31,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:31,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493485851] [2021-12-06 22:21:31,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493485851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:31,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:31,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:31,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918961056] [2021-12-06 22:21:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:31,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:31,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:31,698 INFO L87 Difference]: Start difference. First operand 11489 states and 19542 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:32,527 INFO L93 Difference]: Finished difference Result 30726 states and 52542 transitions. [2021-12-06 22:21:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:32,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2021-12-06 22:21:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:32,573 INFO L225 Difference]: With dead ends: 30726 [2021-12-06 22:21:32,573 INFO L226 Difference]: Without dead ends: 20897 [2021-12-06 22:21:32,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:32,587 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 610 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:32,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 948 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:21:32,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20897 states. [2021-12-06 22:21:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20897 to 20751. [2021-12-06 22:21:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 19797 states have (on average 1.677829974238521) internal successors, (33216), 19801 states have internal predecessors, (33216), 937 states have call successors, (937), 14 states have call predecessors, (937), 16 states have return successors, (939), 935 states have call predecessors, (939), 936 states have call successors, (939) [2021-12-06 22:21:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 35092 transitions. [2021-12-06 22:21:33,269 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 35092 transitions. Word has length 102 [2021-12-06 22:21:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:33,269 INFO L470 AbstractCegarLoop]: Abstraction has 20751 states and 35092 transitions. [2021-12-06 22:21:33,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 35092 transitions. [2021-12-06 22:21:33,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 22:21:33,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:33,289 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 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] [2021-12-06 22:21:33,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:21:33,289 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:33,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1147279506, now seen corresponding path program 2 times [2021-12-06 22:21:33,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:33,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686491030] [2021-12-06 22:21:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:33,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:21:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:21:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:21:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:21:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:21:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:21:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 22:21:33,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:33,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686491030] [2021-12-06 22:21:33,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686491030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:33,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:33,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:33,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112387322] [2021-12-06 22:21:33,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:33,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:33,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:33,341 INFO L87 Difference]: Start difference. First operand 20751 states and 35092 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:34,345 INFO L93 Difference]: Finished difference Result 39348 states and 66753 transitions. [2021-12-06 22:21:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2021-12-06 22:21:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:34,380 INFO L225 Difference]: With dead ends: 39348 [2021-12-06 22:21:34,380 INFO L226 Difference]: Without dead ends: 20897 [2021-12-06 22:21:34,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:34,399 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 628 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:34,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 1283 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:21:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20897 states. [2021-12-06 22:21:35,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20897 to 20751. [2021-12-06 22:21:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 19797 states have (on average 1.6643935949891397) internal successors, (32950), 19801 states have internal predecessors, (32950), 937 states have call successors, (937), 14 states have call predecessors, (937), 16 states have return successors, (939), 935 states have call predecessors, (939), 936 states have call successors, (939) [2021-12-06 22:21:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 34826 transitions. [2021-12-06 22:21:35,253 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 34826 transitions. Word has length 102 [2021-12-06 22:21:35,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:35,253 INFO L470 AbstractCegarLoop]: Abstraction has 20751 states and 34826 transitions. [2021-12-06 22:21:35,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 34826 transitions. [2021-12-06 22:21:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 22:21:35,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:35,274 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:35,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:21:35,274 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:35,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1088046568, now seen corresponding path program 1 times [2021-12-06 22:21:35,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:35,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041452114] [2021-12-06 22:21:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:35,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 22:21:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:21:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:21:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:21:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:21:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:21:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:35,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041452114] [2021-12-06 22:21:35,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041452114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:35,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:35,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:35,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174167838] [2021-12-06 22:21:35,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:35,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:35,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:35,335 INFO L87 Difference]: Start difference. First operand 20751 states and 34826 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:36,658 INFO L93 Difference]: Finished difference Result 57223 states and 96314 transitions. [2021-12-06 22:21:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:36,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 103 [2021-12-06 22:21:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:36,728 INFO L225 Difference]: With dead ends: 57223 [2021-12-06 22:21:36,728 INFO L226 Difference]: Without dead ends: 38676 [2021-12-06 22:21:36,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:36,748 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 609 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:36,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 939 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:21:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38676 states. [2021-12-06 22:21:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38676 to 38530. [2021-12-06 22:21:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38530 states, 36778 states have (on average 1.6499265865463049) internal successors, (60681), 36782 states have internal predecessors, (60681), 1735 states have call successors, (1735), 14 states have call predecessors, (1735), 16 states have return successors, (1737), 1733 states have call predecessors, (1737), 1734 states have call successors, (1737) [2021-12-06 22:21:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38530 states to 38530 states and 64153 transitions. [2021-12-06 22:21:37,963 INFO L78 Accepts]: Start accepts. Automaton has 38530 states and 64153 transitions. Word has length 103 [2021-12-06 22:21:37,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:37,963 INFO L470 AbstractCegarLoop]: Abstraction has 38530 states and 64153 transitions. [2021-12-06 22:21:37,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 38530 states and 64153 transitions. [2021-12-06 22:21:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 22:21:37,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:37,985 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:37,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:21:37,985 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:37,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash 477402909, now seen corresponding path program 1 times [2021-12-06 22:21:37,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:37,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31176708] [2021-12-06 22:21:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:37,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:21:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:21:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:21:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:21:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:21:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:21:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:38,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:38,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31176708] [2021-12-06 22:21:38,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31176708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:38,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:38,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:38,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193370227] [2021-12-06 22:21:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:38,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:21:38,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:21:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:21:38,043 INFO L87 Difference]: Start difference. First operand 38530 states and 64153 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:40,387 INFO L93 Difference]: Finished difference Result 73266 states and 121928 transitions. [2021-12-06 22:21:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:21:40,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2021-12-06 22:21:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:40,534 INFO L225 Difference]: With dead ends: 73266 [2021-12-06 22:21:40,534 INFO L226 Difference]: Without dead ends: 73134 [2021-12-06 22:21:40,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:21:40,551 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 604 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:40,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 930 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:21:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73134 states. [2021-12-06 22:21:42,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73134 to 72988. [2021-12-06 22:21:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72988 states, 69667 states have (on average 1.6333988832589317) internal successors, (113794), 69671 states have internal predecessors, (113794), 3304 states have call successors, (3304), 14 states have call predecessors, (3304), 16 states have return successors, (3306), 3302 states have call predecessors, (3306), 3303 states have call successors, (3306) [2021-12-06 22:21:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72988 states to 72988 states and 120404 transitions. [2021-12-06 22:21:42,673 INFO L78 Accepts]: Start accepts. Automaton has 72988 states and 120404 transitions. Word has length 104 [2021-12-06 22:21:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:42,673 INFO L470 AbstractCegarLoop]: Abstraction has 72988 states and 120404 transitions. [2021-12-06 22:21:42,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 72988 states and 120404 transitions. [2021-12-06 22:21:42,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 22:21:42,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:42,696 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:42,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:21:42,697 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:42,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:42,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1028364650, now seen corresponding path program 1 times [2021-12-06 22:21:42,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812140885] [2021-12-06 22:21:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:42,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:21:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:21:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:21:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:21:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:21:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:21:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 22:21:42,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:42,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812140885] [2021-12-06 22:21:42,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812140885] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:21:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198159166] [2021-12-06 22:21:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:42,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:42,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:21:42,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:21:42,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:21:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:42,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 22:21:42,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:21:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 22:21:43,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:21:43,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198159166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:43,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:21:43,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2021-12-06 22:21:43,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346502016] [2021-12-06 22:21:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:43,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:21:43,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:21:43,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:21:43,204 INFO L87 Difference]: Start difference. First operand 72988 states and 120404 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-06 22:21:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:45,177 INFO L93 Difference]: Finished difference Result 73396 states and 121008 transitions. [2021-12-06 22:21:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:21:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 105 [2021-12-06 22:21:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:45,371 INFO L225 Difference]: With dead ends: 73396 [2021-12-06 22:21:45,371 INFO L226 Difference]: Without dead ends: 73270 [2021-12-06 22:21:45,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 22:21:45,397 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 768 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:45,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 3715 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:21:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73270 states. [2021-12-06 22:21:48,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73270 to 73171. [2021-12-06 22:21:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73171 states, 69803 states have (on average 1.6329384123891524) internal successors, (113984), 69809 states have internal predecessors, (113984), 3337 states have call successors, (3337), 25 states have call predecessors, (3337), 30 states have return successors, (3359), 3336 states have call predecessors, (3359), 3335 states have call successors, (3359) [2021-12-06 22:21:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73171 states to 73171 states and 120680 transitions. [2021-12-06 22:21:48,438 INFO L78 Accepts]: Start accepts. Automaton has 73171 states and 120680 transitions. Word has length 105 [2021-12-06 22:21:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:48,438 INFO L470 AbstractCegarLoop]: Abstraction has 73171 states and 120680 transitions. [2021-12-06 22:21:48,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-06 22:21:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 73171 states and 120680 transitions. [2021-12-06 22:21:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:21:48,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:48,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:48,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:21:48,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:21:48,671 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1944126543, now seen corresponding path program 1 times [2021-12-06 22:21:48,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:48,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471319514] [2021-12-06 22:21:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:48,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:21:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:21:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:21:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:21:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:21:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:21:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:48,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:48,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471319514] [2021-12-06 22:21:48,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471319514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:48,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:48,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:21:48,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4002309] [2021-12-06 22:21:48,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:48,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:21:48,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:21:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:21:48,781 INFO L87 Difference]: Start difference. First operand 73171 states and 120680 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:53,484 INFO L93 Difference]: Finished difference Result 145155 states and 239841 transitions. [2021-12-06 22:21:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 22:21:53,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 106 [2021-12-06 22:21:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:53,825 INFO L225 Difference]: With dead ends: 145155 [2021-12-06 22:21:53,825 INFO L226 Difference]: Without dead ends: 144855 [2021-12-06 22:21:53,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2021-12-06 22:21:53,852 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1940 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:53,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1960 Valid, 1230 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 22:21:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144855 states. [2021-12-06 22:21:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144855 to 143623. [2021-12-06 22:21:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143623 states, 137006 states have (on average 1.6343152854619505) internal successors, (223911), 137019 states have internal predecessors, (223911), 6553 states have call successors, (6553), 48 states have call predecessors, (6553), 63 states have return successors, (6628), 6555 states have call predecessors, (6628), 6549 states have call successors, (6628) [2021-12-06 22:21:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143623 states to 143623 states and 237092 transitions. [2021-12-06 22:21:58,519 INFO L78 Accepts]: Start accepts. Automaton has 143623 states and 237092 transitions. Word has length 106 [2021-12-06 22:21:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:58,519 INFO L470 AbstractCegarLoop]: Abstraction has 143623 states and 237092 transitions. [2021-12-06 22:21:58,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:21:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 143623 states and 237092 transitions. [2021-12-06 22:21:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:21:58,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:58,565 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:58,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:21:58,566 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:58,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2084552490, now seen corresponding path program 1 times [2021-12-06 22:21:58,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:58,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433209905] [2021-12-06 22:21:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:58,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:21:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:21:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:21:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:21:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:21:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:21:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:21:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:21:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:21:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:21:58,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:58,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433209905] [2021-12-06 22:21:58,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433209905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:58,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:58,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 22:21:58,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108514719] [2021-12-06 22:21:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:58,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:21:58,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:58,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:21:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:21:58,679 INFO L87 Difference]: Start difference. First operand 143623 states and 237092 transitions. Second operand has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-06 22:22:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:04,298 INFO L93 Difference]: Finished difference Result 145733 states and 240737 transitions. [2021-12-06 22:22:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 22:22:04,298 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 106 [2021-12-06 22:22:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:04,699 INFO L225 Difference]: With dead ends: 145733 [2021-12-06 22:22:04,699 INFO L226 Difference]: Without dead ends: 145027 [2021-12-06 22:22:04,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=1660, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 22:22:04,734 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1125 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 4754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 4096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:04,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 2397 Invalid, 4754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 4096 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 22:22:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145027 states. [2021-12-06 22:22:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145027 to 143995. [2021-12-06 22:22:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143995 states, 137264 states have (on average 1.6337204219606014) internal successors, (224251), 137283 states have internal predecessors, (224251), 6657 states have call successors, (6657), 56 states have call predecessors, (6657), 73 states have return successors, (6774), 6655 states have call predecessors, (6774), 6645 states have call successors, (6774) [2021-12-06 22:22:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143995 states to 143995 states and 237682 transitions. [2021-12-06 22:22:09,359 INFO L78 Accepts]: Start accepts. Automaton has 143995 states and 237682 transitions. Word has length 106 [2021-12-06 22:22:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:09,359 INFO L470 AbstractCegarLoop]: Abstraction has 143995 states and 237682 transitions. [2021-12-06 22:22:09,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.923076923076923) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-06 22:22:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 143995 states and 237682 transitions. [2021-12-06 22:22:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 22:22:09,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:09,405 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:09,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:22:09,405 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:09,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:09,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1959436323, now seen corresponding path program 1 times [2021-12-06 22:22:09,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:09,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634498994] [2021-12-06 22:22:09,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:09,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:22:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:22:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:22:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:22:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:22:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:22:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:22:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:22:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:22:09,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:09,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634498994] [2021-12-06 22:22:09,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634498994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:09,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:09,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:22:09,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260157230] [2021-12-06 22:22:09,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:09,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:22:09,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:22:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:22:09,467 INFO L87 Difference]: Start difference. First operand 143995 states and 237682 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:22:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:13,534 INFO L93 Difference]: Finished difference Result 145459 states and 240125 transitions. [2021-12-06 22:22:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:22:13,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 106 [2021-12-06 22:22:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:13,886 INFO L225 Difference]: With dead ends: 145459 [2021-12-06 22:22:13,886 INFO L226 Difference]: Without dead ends: 144943 [2021-12-06 22:22:13,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:22:13,934 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 610 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:13,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 1181 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:22:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144943 states. [2021-12-06 22:22:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144943 to 143901. [2021-12-06 22:22:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143901 states, 137206 states have (on average 1.6338862731950499) internal successors, (224179), 137223 states have internal predecessors, (224179), 6625 states have call successors, (6625), 54 states have call predecessors, (6625), 69 states have return successors, (6712), 6623 states have call predecessors, (6712), 6613 states have call successors, (6712) [2021-12-06 22:22:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143901 states to 143901 states and 237516 transitions. [2021-12-06 22:22:18,922 INFO L78 Accepts]: Start accepts. Automaton has 143901 states and 237516 transitions. Word has length 106 [2021-12-06 22:22:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:18,922 INFO L470 AbstractCegarLoop]: Abstraction has 143901 states and 237516 transitions. [2021-12-06 22:22:18,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:22:18,922 INFO L276 IsEmpty]: Start isEmpty. Operand 143901 states and 237516 transitions. [2021-12-06 22:22:18,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 22:22:18,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:18,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:18,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:22:18,970 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1773521521, now seen corresponding path program 1 times [2021-12-06 22:22:18,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:18,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813452579] [2021-12-06 22:22:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:18,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:22:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:22:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 22:22:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:22:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:22:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:22:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:22:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:22:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 22:22:19,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813452579] [2021-12-06 22:22:19,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813452579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:19,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:19,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 22:22:19,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450592127] [2021-12-06 22:22:19,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:19,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:22:19,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:22:19,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:22:19,091 INFO L87 Difference]: Start difference. First operand 143901 states and 237516 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-06 22:22:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:25,752 INFO L93 Difference]: Finished difference Result 146515 states and 241743 transitions. [2021-12-06 22:22:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 22:22:25,752 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 107 [2021-12-06 22:22:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:26,097 INFO L225 Difference]: With dead ends: 146515 [2021-12-06 22:22:26,097 INFO L226 Difference]: Without dead ends: 145583 [2021-12-06 22:22:26,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2021-12-06 22:22:26,145 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1975 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 5575 mSolverCounterSat, 1794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 7369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1794 IncrementalHoareTripleChecker+Valid, 5575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:26,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1980 Valid, 2032 Invalid, 7369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1794 Valid, 5575 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 22:22:26,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145583 states. [2021-12-06 22:22:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145583 to 143857. [2021-12-06 22:22:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143857 states, 137174 states have (on average 1.6338883461880531) internal successors, (224127), 137191 states have internal predecessors, (224127), 6613 states have call successors, (6613), 54 states have call predecessors, (6613), 69 states have return successors, (6694), 6611 states have call predecessors, (6694), 6601 states have call successors, (6694) [2021-12-06 22:22:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143857 states to 143857 states and 237434 transitions. [2021-12-06 22:22:31,341 INFO L78 Accepts]: Start accepts. Automaton has 143857 states and 237434 transitions. Word has length 107 [2021-12-06 22:22:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:31,341 INFO L470 AbstractCegarLoop]: Abstraction has 143857 states and 237434 transitions. [2021-12-06 22:22:31,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-06 22:22:31,342 INFO L276 IsEmpty]: Start isEmpty. Operand 143857 states and 237434 transitions. [2021-12-06 22:22:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 22:22:31,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:31,406 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2021-12-06 22:22:31,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 22:22:31,406 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:31,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:31,407 INFO L85 PathProgramCache]: Analyzing trace with hash 659920630, now seen corresponding path program 1 times [2021-12-06 22:22:31,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:31,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4186197] [2021-12-06 22:22:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:31,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:22:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:22:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:22:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:22:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:22:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:22:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:22:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:22:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 22:22:31,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4186197] [2021-12-06 22:22:31,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4186197] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914310096] [2021-12-06 22:22:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:31,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:31,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:22:31,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:22:31,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:22:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:31,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:22:31,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:22:31,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:31,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914310096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:31,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:22:31,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:22:31,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206788268] [2021-12-06 22:22:31,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:31,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:22:31,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:31,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:22:31,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:22:31,697 INFO L87 Difference]: Start difference. First operand 143857 states and 237434 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:22:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:36,150 INFO L93 Difference]: Finished difference Result 282862 states and 467434 transitions. [2021-12-06 22:22:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:22:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 112 [2021-12-06 22:22:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:36,619 INFO L225 Difference]: With dead ends: 282862 [2021-12-06 22:22:36,619 INFO L226 Difference]: Without dead ends: 143885 [2021-12-06 22:22:36,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:22:36,732 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 89 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:36,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 775 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143885 states. [2021-12-06 22:22:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143885 to 143857. [2021-12-06 22:22:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143857 states, 137174 states have (on average 1.6188563430387684) internal successors, (222065), 137191 states have internal predecessors, (222065), 6613 states have call successors, (6613), 54 states have call predecessors, (6613), 69 states have return successors, (6694), 6611 states have call predecessors, (6694), 6601 states have call successors, (6694) [2021-12-06 22:22:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143857 states to 143857 states and 235372 transitions. [2021-12-06 22:22:41,590 INFO L78 Accepts]: Start accepts. Automaton has 143857 states and 235372 transitions. Word has length 112 [2021-12-06 22:22:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:41,590 INFO L470 AbstractCegarLoop]: Abstraction has 143857 states and 235372 transitions. [2021-12-06 22:22:41,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:22:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 143857 states and 235372 transitions. [2021-12-06 22:22:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-06 22:22:41,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:41,656 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2021-12-06 22:22:41,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:22:41,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 22:22:41,858 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash -139770128, now seen corresponding path program 1 times [2021-12-06 22:22:41,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:41,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262290987] [2021-12-06 22:22:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:41,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:22:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:22:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:22:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:22:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:22:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:22:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:22:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:22:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 22:22:41,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262290987] [2021-12-06 22:22:41,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262290987] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124729058] [2021-12-06 22:22:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:41,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:22:41,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:22:41,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:22:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:42,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:22:42,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 22:22:42,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:22:42,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124729058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:42,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:22:42,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 22:22:42,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405648169] [2021-12-06 22:22:42,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:42,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:22:42,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:22:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:22:42,143 INFO L87 Difference]: Start difference. First operand 143857 states and 235372 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 22:22:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:45,836 INFO L93 Difference]: Finished difference Result 144100 states and 235752 transitions. [2021-12-06 22:22:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:22:45,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 113 [2021-12-06 22:22:45,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:45,838 INFO L225 Difference]: With dead ends: 144100 [2021-12-06 22:22:45,838 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 22:22:45,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:22:45,925 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 28 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:45,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1440 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:22:45,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 22:22:45,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 22:22:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:22:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:22:45,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2021-12-06 22:22:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:45,931 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:22:45,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 22:22:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:22:45,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 22:22:45,933 INFO L764 garLoopResultBuilder]: Registering result SAFE for location outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 22:22:45,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:22:46,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df9cb4dd-9d27-4a3f-a9ec-e571d05deb43/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:46,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 22:33:01,078 WARN L227 SmtUtils]: Spent 10.25m on a formula simplification. DAG size of input: 4243 DAG size of output: 4242 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 22:35:42,093 WARN L227 SmtUtils]: Spent 2.68m on a formula simplification. DAG size of input: 2181 DAG size of output: 2180 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)