./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product35.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_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/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_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/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_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/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 4b1644ee409dd7fb9188781699149bb283de125dad063a54175775584b617862 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:57:41,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:57:41,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:57:41,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:57:41,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:57:41,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:57:41,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:57:41,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:57:41,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:57:41,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:57:41,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:57:41,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:57:41,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:57:41,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:57:41,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:57:41,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:57:41,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:57:41,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:57:41,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:57:41,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:57:41,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:57:41,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:57:41,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:57:41,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:57:41,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:57:41,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:57:41,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:57:41,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:57:41,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:57:41,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:57:41,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:57:41,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:57:41,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:57:41,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:57:41,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:57:41,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:57:41,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:57:41,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:57:41,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:57:41,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:57:41,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:57:41,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:57:41,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:57:41,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:57:41,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:57:41,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:57:41,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:57:41,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:57:41,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:57:41,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:57:41,447 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:57:41,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:57:41,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:57:41,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:57:41,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:57:41,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:57:41,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:57:41,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:57:41,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:57:41,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:57:41,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:57:41,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:57:41,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:57:41,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:57:41,450 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:57:41,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:57:41,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:57:41,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:57:41,450 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_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b1644ee409dd7fb9188781699149bb283de125dad063a54175775584b617862 [2021-12-06 22:57:41,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:57:41,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:57:41,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:57:41,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:57:41,653 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:57:41,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec6_product35.cil.c [2021-12-06 22:57:41,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/data/2a738e086/5849d176766246e0b8ffcce896bb51b3/FLAG98f27f10e [2021-12-06 22:57:42,195 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:57:42,196 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c [2021-12-06 22:57:42,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/data/2a738e086/5849d176766246e0b8ffcce896bb51b3/FLAG98f27f10e [2021-12-06 22:57:42,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/data/2a738e086/5849d176766246e0b8ffcce896bb51b3 [2021-12-06 22:57:42,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:57:42,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:57:42,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:57:42,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:57:42,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:57:42,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:57:42" (1/1) ... [2021-12-06 22:57:42,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77608a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:42, skipping insertion in model container [2021-12-06 22:57:42,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:57:42" (1/1) ... [2021-12-06 22:57:42,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:57:42,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:57:43,034 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_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c[24735,24748] [2021-12-06 22:57:43,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:57:43,123 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:57:43,156 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_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/sv-benchmarks/c/product-lines/email_spec6_product35.cil.c[24735,24748] [2021-12-06 22:57:43,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:57:43,216 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:57:43,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43 WrapperNode [2021-12-06 22:57:43,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:57:43,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:57:43,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:57:43,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:57:43,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,282 INFO L137 Inliner]: procedures = 138, calls = 254, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1175 [2021-12-06 22:57:43,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:57:43,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:57:43,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:57:43,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:57:43,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:57:43,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:57:43,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:57:43,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:57:43,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (1/1) ... [2021-12-06 22:57:43,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:57:43,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:43,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:57:43,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:57:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-06 22:57:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-06 22:57:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-06 22:57:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-06 22:57:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-06 22:57:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-06 22:57:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-06 22:57:43,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-06 22:57:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-06 22:57:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-06 22:57:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-06 22:57:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-06 22:57:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2021-12-06 22:57:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2021-12-06 22:57:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-06 22:57:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-06 22:57:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-06 22:57:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-06 22:57:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-06 22:57:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-06 22:57:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-06 22:57:43,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-06 22:57:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-06 22:57:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-06 22:57:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-06 22:57:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-06 22:57:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-06 22:57:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-06 22:57:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-06 22:57:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-06 22:57:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-06 22:57:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-06 22:57:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-06 22:57:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:57:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-06 22:57:43,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-06 22:57:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-06 22:57:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-06 22:57:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-06 22:57:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-06 22:57:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-06 22:57:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-06 22:57:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-06 22:57:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-06 22:57:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-06 22:57:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-06 22:57:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-06 22:57:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-06 22:57:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-06 22:57:43,405 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-06 22:57:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-06 22:57:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-06 22:57:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-06 22:57:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-06 22:57:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-06 22:57:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-06 22:57:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:57:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-06 22:57:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-06 22:57:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-06 22:57:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-06 22:57:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:57:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:57:43,568 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:57:43,570 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:57:44,088 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:57:44,100 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:57:44,100 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:57:44,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:57:44 BoogieIcfgContainer [2021-12-06 22:57:44,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:57:44,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:57:44,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:57:44,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:57:44,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:57:42" (1/3) ... [2021-12-06 22:57:44,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb61f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:57:44, skipping insertion in model container [2021-12-06 22:57:44,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:57:43" (2/3) ... [2021-12-06 22:57:44,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb61f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:57:44, skipping insertion in model container [2021-12-06 22:57:44,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:57:44" (3/3) ... [2021-12-06 22:57:44,110 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product35.cil.c [2021-12-06 22:57:44,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:57:44,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:57:44,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:57:44,168 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 22:57:44,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:57:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 363 states have (on average 1.5316804407713498) internal successors, (556), 368 states have internal predecessors, (556), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2021-12-06 22:57:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 22:57:44,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:44,222 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:44,223 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2066103245, now seen corresponding path program 1 times [2021-12-06 22:57:44,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:44,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769647007] [2021-12-06 22:57:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:44,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:57:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:57:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:57:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:57:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:57:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:57:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:57:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:57:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:57:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:57:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:57:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:57:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:57:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:57:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:57:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:57:44,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:44,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769647007] [2021-12-06 22:57:44,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769647007] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:57:44,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314750457] [2021-12-06 22:57:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:44,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:44,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:44,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:57:44,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:57:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:44,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 22:57:44,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:57:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:57:45,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:57:45,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314750457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:45,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:57:45,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-06 22:57:45,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350914828] [2021-12-06 22:57:45,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:45,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:57:45,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:57:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:57:45,054 INFO L87 Difference]: Start difference. First operand has 471 states, 363 states have (on average 1.5316804407713498) internal successors, (556), 368 states have internal predecessors, (556), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:57:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:45,108 INFO L93 Difference]: Finished difference Result 744 states and 1102 transitions. [2021-12-06 22:57:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:57:45,110 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 135 [2021-12-06 22:57:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:45,123 INFO L225 Difference]: With dead ends: 744 [2021-12-06 22:57:45,123 INFO L226 Difference]: Without dead ends: 464 [2021-12-06 22:57:45,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 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 22:57:45,132 INFO L933 BasicCegarLoop]: 706 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, 706 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 22:57:45,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:57:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-06 22:57:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-12-06 22:57:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 357 states have (on average 1.526610644257703) internal successors, (545), 361 states have internal predecessors, (545), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2021-12-06 22:57:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 698 transitions. [2021-12-06 22:57:45,194 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 698 transitions. Word has length 135 [2021-12-06 22:57:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:45,196 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 698 transitions. [2021-12-06 22:57:45,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:57:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 698 transitions. [2021-12-06 22:57:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 22:57:45,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:45,201 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:45,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:57:45,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-06 22:57:45,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:45,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:45,406 INFO L85 PathProgramCache]: Analyzing trace with hash 473442191, now seen corresponding path program 1 times [2021-12-06 22:57:45,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:45,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795747323] [2021-12-06 22:57:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:45,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:57:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:57:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:57:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:57:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 22:57:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:57:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:57:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:57:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:57:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:57:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:57:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:57:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:57:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:57:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:57:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 22:57:45,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:45,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795747323] [2021-12-06 22:57:45,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795747323] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:57:45,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455322563] [2021-12-06 22:57:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:45,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:45,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:45,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:57:45,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:57:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:45,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:57:45,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:57:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:57:45,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:57:45,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455322563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:45,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:57:45,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:57:45,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282814328] [2021-12-06 22:57:45,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:45,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:57:45,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:45,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:57:45,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:57:45,980 INFO L87 Difference]: Start difference. First operand 464 states and 698 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:57:46,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:46,025 INFO L93 Difference]: Finished difference Result 734 states and 1080 transitions. [2021-12-06 22:57:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:57:46,026 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2021-12-06 22:57:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:46,032 INFO L225 Difference]: With dead ends: 734 [2021-12-06 22:57:46,032 INFO L226 Difference]: Without dead ends: 467 [2021-12-06 22:57:46,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:57:46,035 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 1 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1390 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 22:57:46,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1390 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:57:46,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-12-06 22:57:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 466. [2021-12-06 22:57:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 359 states have (on average 1.5236768802228413) internal successors, (547), 363 states have internal predecessors, (547), 77 states have call successors, (77), 29 states have call predecessors, (77), 29 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2021-12-06 22:57:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 700 transitions. [2021-12-06 22:57:46,070 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 700 transitions. Word has length 136 [2021-12-06 22:57:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:46,070 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 700 transitions. [2021-12-06 22:57:46,071 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:57:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 700 transitions. [2021-12-06 22:57:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 22:57:46,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:46,074 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:46,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:57:46,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:46,276 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:46,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash 18662654, now seen corresponding path program 1 times [2021-12-06 22:57:46,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:46,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085186246] [2021-12-06 22:57:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:46,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:57:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:57:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:57:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:57:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:57:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:57:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:57:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:57:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:57:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:57:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:57:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:57:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:57:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:57:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:57:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:57:46,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:46,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085186246] [2021-12-06 22:57:46,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085186246] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:57:46,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510617577] [2021-12-06 22:57:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:46,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:46,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:46,465 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:57:46,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:57:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:46,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:57:46,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:57:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:57:46,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:57:46,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510617577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:46,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:57:46,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-06 22:57:46,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788724558] [2021-12-06 22:57:46,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:46,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:57:46,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:46,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:57:46,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:57:46,771 INFO L87 Difference]: Start difference. First operand 466 states and 700 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:57:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:46,805 INFO L93 Difference]: Finished difference Result 985 states and 1500 transitions. [2021-12-06 22:57:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:57:46,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 145 [2021-12-06 22:57:46,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:46,809 INFO L225 Difference]: With dead ends: 985 [2021-12-06 22:57:46,810 INFO L226 Difference]: Without dead ends: 546 [2021-12-06 22:57:46,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:57:46,812 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 142 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:57:46,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1369 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:57:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-12-06 22:57:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 538. [2021-12-06 22:57:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 417 states have (on average 1.5443645083932853) internal successors, (644), 421 states have internal predecessors, (644), 91 states have call successors, (91), 29 states have call predecessors, (91), 29 states have return successors, (90), 89 states have call predecessors, (90), 90 states have call successors, (90) [2021-12-06 22:57:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 825 transitions. [2021-12-06 22:57:46,835 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 825 transitions. Word has length 145 [2021-12-06 22:57:46,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:46,835 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 825 transitions. [2021-12-06 22:57:46,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:57:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 825 transitions. [2021-12-06 22:57:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 22:57:46,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:46,839 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:46,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:57:47,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:47,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1932418513, now seen corresponding path program 1 times [2021-12-06 22:57:47,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:47,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192118626] [2021-12-06 22:57:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:47,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:57:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:57:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:57:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:57:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:57:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:57:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:57:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:57:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:57:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:57:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:57:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:57:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:57:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:57:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:57:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:57:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:57:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:57:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 22:57:47,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:47,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192118626] [2021-12-06 22:57:47,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192118626] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:57:47,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879113957] [2021-12-06 22:57:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:47,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:47,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:47,166 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:57:47,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:57:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:57:47,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:57:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:57:47,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:57:47,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879113957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:47,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:57:47,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 22:57:47,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012984098] [2021-12-06 22:57:47,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:47,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:57:47,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:57:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:57:47,531 INFO L87 Difference]: Start difference. First operand 538 states and 825 transitions. Second operand has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:57:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:47,598 INFO L93 Difference]: Finished difference Result 1067 states and 1640 transitions. [2021-12-06 22:57:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:57:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 165 [2021-12-06 22:57:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:47,603 INFO L225 Difference]: With dead ends: 1067 [2021-12-06 22:57:47,603 INFO L226 Difference]: Without dead ends: 540 [2021-12-06 22:57:47,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:57:47,607 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 160 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2574 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 22:57:47,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 2574 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:57:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-12-06 22:57:47,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2021-12-06 22:57:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 418 states have (on average 1.5430622009569377) internal successors, (645), 423 states have internal predecessors, (645), 91 states have call successors, (91), 29 states have call predecessors, (91), 30 states have return successors, (92), 89 states have call predecessors, (92), 90 states have call successors, (92) [2021-12-06 22:57:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 828 transitions. [2021-12-06 22:57:47,636 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 828 transitions. Word has length 165 [2021-12-06 22:57:47,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:47,637 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 828 transitions. [2021-12-06 22:57:47,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:57:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 828 transitions. [2021-12-06 22:57:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 22:57:47,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:47,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:47,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:57:47,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:47,842 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -174520300, now seen corresponding path program 1 times [2021-12-06 22:57:47,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:47,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840874035] [2021-12-06 22:57:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:47,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:57:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:57:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:57:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:57:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:57:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:57:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:57:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:57:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:57:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:57:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:57:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:57:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:57:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:57:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:57:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:57:48,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:48,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840874035] [2021-12-06 22:57:48,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840874035] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:57:48,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186675520] [2021-12-06 22:57:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:48,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:48,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:48,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:57:48,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:57:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:57:48,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:57:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:57:48,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:57:48,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186675520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:48,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:57:48,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-06 22:57:48,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468470369] [2021-12-06 22:57:48,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:48,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:57:48,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:57:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:57:48,345 INFO L87 Difference]: Start difference. First operand 540 states and 828 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 22:57:48,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:48,403 INFO L93 Difference]: Finished difference Result 1069 states and 1645 transitions. [2021-12-06 22:57:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:57:48,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2021-12-06 22:57:48,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:48,407 INFO L225 Difference]: With dead ends: 1069 [2021-12-06 22:57:48,407 INFO L226 Difference]: Without dead ends: 542 [2021-12-06 22:57:48,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:57:48,410 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 159 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:57:48,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 2563 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:57:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-12-06 22:57:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2021-12-06 22:57:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.541766109785203) internal successors, (646), 425 states have internal predecessors, (646), 91 states have call successors, (91), 29 states have call predecessors, (91), 31 states have return successors, (97), 89 states have call predecessors, (97), 90 states have call successors, (97) [2021-12-06 22:57:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 834 transitions. [2021-12-06 22:57:48,434 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 834 transitions. Word has length 147 [2021-12-06 22:57:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:48,434 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 834 transitions. [2021-12-06 22:57:48,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 22:57:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 834 transitions. [2021-12-06 22:57:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-06 22:57:48,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:48,438 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:48,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 22:57:48,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:48,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 833805250, now seen corresponding path program 1 times [2021-12-06 22:57:48,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:48,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351275761] [2021-12-06 22:57:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:48,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:57:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:57:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:57:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:57:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:57:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:57:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:57:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:57:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:57:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:57:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:57:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:57:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:57:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:57:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:57:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:57:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:57:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:57:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 22:57:48,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:48,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351275761] [2021-12-06 22:57:48,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351275761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:48,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:57:48,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:57:48,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210064346] [2021-12-06 22:57:48,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:48,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:57:48,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:57:48,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:57:48,768 INFO L87 Difference]: Start difference. First operand 542 states and 834 transitions. Second operand has 9 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:57:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:50,478 INFO L93 Difference]: Finished difference Result 1299 states and 2025 transitions. [2021-12-06 22:57:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:57:50,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 167 [2021-12-06 22:57:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:50,484 INFO L225 Difference]: With dead ends: 1299 [2021-12-06 22:57:50,484 INFO L226 Difference]: Without dead ends: 780 [2021-12-06 22:57:50,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:57:50,487 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 1739 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 3464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:57:50,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 2282 Invalid, 3464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 22:57:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-12-06 22:57:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 542. [2021-12-06 22:57:50,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 419 states have (on average 1.541766109785203) internal successors, (646), 425 states have internal predecessors, (646), 91 states have call successors, (91), 29 states have call predecessors, (91), 31 states have return successors, (96), 89 states have call predecessors, (96), 90 states have call successors, (96) [2021-12-06 22:57:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 833 transitions. [2021-12-06 22:57:50,529 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 833 transitions. Word has length 167 [2021-12-06 22:57:50,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:50,530 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 833 transitions. [2021-12-06 22:57:50,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:57:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 833 transitions. [2021-12-06 22:57:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-06 22:57:50,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:50,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:50,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:57:50,534 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:50,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:50,534 INFO L85 PathProgramCache]: Analyzing trace with hash -355459448, now seen corresponding path program 2 times [2021-12-06 22:57:50,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:50,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475054162] [2021-12-06 22:57:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:50,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:57:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:57:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:57:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:57:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:57:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:57:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:57:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:57:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:57:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:57:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:57:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:57:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:57:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:57:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:57:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:57:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:57:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:57:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 22:57:50,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:50,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475054162] [2021-12-06 22:57:50,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475054162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:50,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:57:50,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:57:50,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336658122] [2021-12-06 22:57:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:50,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:57:50,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:57:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:57:50,647 INFO L87 Difference]: Start difference. First operand 542 states and 833 transitions. Second operand has 9 states, 8 states have (on average 12.5) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:57:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:52,138 INFO L93 Difference]: Finished difference Result 1301 states and 2028 transitions. [2021-12-06 22:57:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:57:52,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.5) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 168 [2021-12-06 22:57:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:52,143 INFO L225 Difference]: With dead ends: 1301 [2021-12-06 22:57:52,143 INFO L226 Difference]: Without dead ends: 782 [2021-12-06 22:57:52,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:57:52,146 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 1728 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:57:52,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 2308 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 2758 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 22:57:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-12-06 22:57:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 544. [2021-12-06 22:57:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 420 states have (on average 1.5404761904761906) internal successors, (647), 427 states have internal predecessors, (647), 91 states have call successors, (91), 29 states have call predecessors, (91), 32 states have return successors, (98), 89 states have call predecessors, (98), 90 states have call successors, (98) [2021-12-06 22:57:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 836 transitions. [2021-12-06 22:57:52,175 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 836 transitions. Word has length 168 [2021-12-06 22:57:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:52,176 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 836 transitions. [2021-12-06 22:57:52,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.5) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:57:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 836 transitions. [2021-12-06 22:57:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 22:57:52,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:52,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:52,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:57:52,179 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1954260473, now seen corresponding path program 1 times [2021-12-06 22:57:52,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:52,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007977613] [2021-12-06 22:57:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:52,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:57:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:57:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:57:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:57:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:57:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:57:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:57:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:57:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:57:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:57:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:57:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:57:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:57:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:57:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:57:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:57:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 22:57:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:57:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:57:52,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:52,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007977613] [2021-12-06 22:57:52,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007977613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:52,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:57:52,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:57:52,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862734131] [2021-12-06 22:57:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:52,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:57:52,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:57:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:57:52,324 INFO L87 Difference]: Start difference. First operand 544 states and 836 transitions. Second operand has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-06 22:57:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:54,169 INFO L93 Difference]: Finished difference Result 1299 states and 2023 transitions. [2021-12-06 22:57:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:57:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 169 [2021-12-06 22:57:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:54,175 INFO L225 Difference]: With dead ends: 1299 [2021-12-06 22:57:54,175 INFO L226 Difference]: Without dead ends: 782 [2021-12-06 22:57:54,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:57:54,178 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 1878 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 4873 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 4873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:57:54,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 3017 Invalid, 5689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 4873 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 22:57:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-12-06 22:57:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 544. [2021-12-06 22:57:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 420 states have (on average 1.5404761904761906) internal successors, (647), 427 states have internal predecessors, (647), 91 states have call successors, (91), 29 states have call predecessors, (91), 32 states have return successors, (97), 89 states have call predecessors, (97), 90 states have call successors, (97) [2021-12-06 22:57:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 835 transitions. [2021-12-06 22:57:54,218 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 835 transitions. Word has length 169 [2021-12-06 22:57:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:54,218 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 835 transitions. [2021-12-06 22:57:54,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-06 22:57:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 835 transitions. [2021-12-06 22:57:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-06 22:57:54,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:54,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:54,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:57:54,221 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash 621365938, now seen corresponding path program 2 times [2021-12-06 22:57:54,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:54,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340386583] [2021-12-06 22:57:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:54,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:57:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:57:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:57:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:57:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:57:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:57:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:57:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:57:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:57:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:57:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:57:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:57:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:57:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:57:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:57:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 22:57:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 22:57:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:57:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:57:54,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:54,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340386583] [2021-12-06 22:57:54,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340386583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:54,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:57:54,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 22:57:54,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031111864] [2021-12-06 22:57:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:54,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:57:54,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:57:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:57:54,348 INFO L87 Difference]: Start difference. First operand 544 states and 835 transitions. Second operand has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-06 22:57:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:56,217 INFO L93 Difference]: Finished difference Result 1301 states and 2029 transitions. [2021-12-06 22:57:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:57:56,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 170 [2021-12-06 22:57:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:56,222 INFO L225 Difference]: With dead ends: 1301 [2021-12-06 22:57:56,222 INFO L226 Difference]: Without dead ends: 784 [2021-12-06 22:57:56,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:57:56,224 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 1874 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 4903 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 5706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 4903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:57:56,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1874 Valid, 3011 Invalid, 5706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 4903 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 22:57:56,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-12-06 22:57:56,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 546. [2021-12-06 22:57:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 421 states have (on average 1.5391923990498813) internal successors, (648), 429 states have internal predecessors, (648), 91 states have call successors, (91), 29 states have call predecessors, (91), 33 states have return successors, (102), 89 states have call predecessors, (102), 90 states have call successors, (102) [2021-12-06 22:57:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 841 transitions. [2021-12-06 22:57:56,253 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 841 transitions. Word has length 170 [2021-12-06 22:57:56,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:56,254 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 841 transitions. [2021-12-06 22:57:56,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-06 22:57:56,254 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 841 transitions. [2021-12-06 22:57:56,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-06 22:57:56,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:56,256 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:56,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:57:56,256 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:56,257 INFO L85 PathProgramCache]: Analyzing trace with hash -77374292, now seen corresponding path program 1 times [2021-12-06 22:57:56,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:56,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143459325] [2021-12-06 22:57:56,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:56,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:57:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:57:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:57:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:57:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:57:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:57:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:57:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:57:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:57:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:57:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:57:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:57:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:57:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:57:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:57:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:57:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:57:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 22:57:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:57:56,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:56,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143459325] [2021-12-06 22:57:56,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143459325] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:57:56,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403476292] [2021-12-06 22:57:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:56,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:56,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:56,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:57:56,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:57:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:56,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:57:56,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:57:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:57:56,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:57:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:57:56,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403476292] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:57:56,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:57:56,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-06 22:57:56,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759517330] [2021-12-06 22:57:56,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:57:56,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:57:56,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:57:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:57:56,827 INFO L87 Difference]: Start difference. First operand 546 states and 841 transitions. Second operand has 15 states, 14 states have (on average 12.285714285714286) internal successors, (172), 11 states have internal predecessors, (172), 4 states have call successors, (49), 6 states have call predecessors, (49), 3 states have return successors, (40), 3 states have call predecessors, (40), 4 states have call successors, (40) [2021-12-06 22:57:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:57:59,365 INFO L93 Difference]: Finished difference Result 2210 states and 3667 transitions. [2021-12-06 22:57:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:57:59,365 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 12.285714285714286) internal successors, (172), 11 states have internal predecessors, (172), 4 states have call successors, (49), 6 states have call predecessors, (49), 3 states have return successors, (40), 3 states have call predecessors, (40), 4 states have call successors, (40) Word has length 171 [2021-12-06 22:57:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:57:59,374 INFO L225 Difference]: With dead ends: 2210 [2021-12-06 22:57:59,374 INFO L226 Difference]: Without dead ends: 1695 [2021-12-06 22:57:59,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:57:59,376 INFO L933 BasicCegarLoop]: 1089 mSDtfsCounter, 4214 mSDsluCounter, 4169 mSDsCounter, 0 mSdLazyCounter, 6445 mSolverCounterSat, 1780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 5258 SdHoareTripleChecker+Invalid, 8225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1780 IncrementalHoareTripleChecker+Valid, 6445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:57:59,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 5258 Invalid, 8225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1780 Valid, 6445 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 22:57:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-12-06 22:57:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 989. [2021-12-06 22:57:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 785 states have (on average 1.5974522292993631) internal successors, (1254), 793 states have internal predecessors, (1254), 170 states have call successors, (170), 29 states have call predecessors, (170), 33 states have return successors, (191), 168 states have call predecessors, (191), 169 states have call successors, (191) [2021-12-06 22:57:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1615 transitions. [2021-12-06 22:57:59,439 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1615 transitions. Word has length 171 [2021-12-06 22:57:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:59,440 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1615 transitions. [2021-12-06 22:57:59,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 12.285714285714286) internal successors, (172), 11 states have internal predecessors, (172), 4 states have call successors, (49), 6 states have call predecessors, (49), 3 states have return successors, (40), 3 states have call predecessors, (40), 4 states have call successors, (40) [2021-12-06 22:57:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1615 transitions. [2021-12-06 22:57:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-06 22:57:59,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:59,445 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:59,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:57:59,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:59,645 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:59,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:59,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1633839497, now seen corresponding path program 1 times [2021-12-06 22:57:59,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:59,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268347236] [2021-12-06 22:57:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:59,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:57:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:57:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:57:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:57:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:57:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:57:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:57:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:57:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:57:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:57:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:57:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:57:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:57:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:57:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:57:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:57:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:57:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:57:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:57:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:57:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:57:59,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:59,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268347236] [2021-12-06 22:57:59,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268347236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:59,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:57:59,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:57:59,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574743166] [2021-12-06 22:57:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:59,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:57:59,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:57:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:57:59,742 INFO L87 Difference]: Start difference. First operand 989 states and 1615 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:00,847 INFO L93 Difference]: Finished difference Result 2561 states and 4275 transitions. [2021-12-06 22:58:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 174 [2021-12-06 22:58:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:00,856 INFO L225 Difference]: With dead ends: 2561 [2021-12-06 22:58:00,856 INFO L226 Difference]: Without dead ends: 1650 [2021-12-06 22:58:00,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:00,859 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 1728 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:00,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 1858 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:58:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-12-06 22:58:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1404. [2021-12-06 22:58:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1121 states have (on average 1.6181980374665477) internal successors, (1814), 1129 states have internal predecessors, (1814), 249 states have call successors, (249), 29 states have call predecessors, (249), 33 states have return successors, (280), 247 states have call predecessors, (280), 248 states have call successors, (280) [2021-12-06 22:58:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2343 transitions. [2021-12-06 22:58:00,934 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2343 transitions. Word has length 174 [2021-12-06 22:58:00,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:00,934 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 2343 transitions. [2021-12-06 22:58:00,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2343 transitions. [2021-12-06 22:58:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 22:58:00,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:00,939 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:00,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:58:00,940 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:00,940 INFO L85 PathProgramCache]: Analyzing trace with hash -28285605, now seen corresponding path program 1 times [2021-12-06 22:58:00,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:00,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27861289] [2021-12-06 22:58:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:00,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:00,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:00,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:58:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:58:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:58:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:58:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:58:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:58:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:58:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:58:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:58:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 22:58:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:58:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:58:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:58:01,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:01,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27861289] [2021-12-06 22:58:01,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27861289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:01,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:01,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:01,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285577499] [2021-12-06 22:58:01,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:01,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:01,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:01,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:01,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:01,038 INFO L87 Difference]: Start difference. First operand 1404 states and 2343 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:58:02,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:02,268 INFO L93 Difference]: Finished difference Result 3600 states and 6088 transitions. [2021-12-06 22:58:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:02,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2021-12-06 22:58:02,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:02,280 INFO L225 Difference]: With dead ends: 3600 [2021-12-06 22:58:02,280 INFO L226 Difference]: Without dead ends: 2327 [2021-12-06 22:58:02,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:02,284 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 1727 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:02,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1746 Valid, 1834 Invalid, 2210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:58:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2021-12-06 22:58:02,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2081. [2021-12-06 22:58:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 1679 states have (on average 1.6295413936867182) internal successors, (2736), 1687 states have internal predecessors, (2736), 368 states have call successors, (368), 29 states have call predecessors, (368), 33 states have return successors, (399), 366 states have call predecessors, (399), 367 states have call successors, (399) [2021-12-06 22:58:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 3503 transitions. [2021-12-06 22:58:02,392 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 3503 transitions. Word has length 156 [2021-12-06 22:58:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:02,392 INFO L470 AbstractCegarLoop]: Abstraction has 2081 states and 3503 transitions. [2021-12-06 22:58:02,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:58:02,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 3503 transitions. [2021-12-06 22:58:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 22:58:02,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:02,402 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:02,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:58:02,402 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1598818594, now seen corresponding path program 1 times [2021-12-06 22:58:02,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:02,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107035921] [2021-12-06 22:58:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:02,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:58:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:58:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:58:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:58:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:58:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:58:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:58:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 22:58:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:58:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:58:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:58:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:58:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:58:02,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:02,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107035921] [2021-12-06 22:58:02,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107035921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:02,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:02,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:02,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747250339] [2021-12-06 22:58:02,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:02,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:02,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:02,519 INFO L87 Difference]: Start difference. First operand 2081 states and 3503 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:58:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:03,766 INFO L93 Difference]: Finished difference Result 5185 states and 8867 transitions. [2021-12-06 22:58:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:03,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2021-12-06 22:58:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:03,784 INFO L225 Difference]: With dead ends: 5185 [2021-12-06 22:58:03,784 INFO L226 Difference]: Without dead ends: 3370 [2021-12-06 22:58:03,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:03,788 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 1721 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 795 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:03,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 1850 Invalid, 2210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [795 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:58:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2021-12-06 22:58:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3124. [2021-12-06 22:58:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 2560 states have (on average 1.63828125) internal successors, (4194), 2568 states have internal predecessors, (4194), 530 states have call successors, (530), 29 states have call predecessors, (530), 33 states have return successors, (577), 528 states have call predecessors, (577), 529 states have call successors, (577) [2021-12-06 22:58:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 5301 transitions. [2021-12-06 22:58:03,984 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 5301 transitions. Word has length 157 [2021-12-06 22:58:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:03,984 INFO L470 AbstractCegarLoop]: Abstraction has 3124 states and 5301 transitions. [2021-12-06 22:58:03,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:58:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 5301 transitions. [2021-12-06 22:58:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 22:58:03,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:03,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:04,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:58:04,000 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash 171903183, now seen corresponding path program 1 times [2021-12-06 22:58:04,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:04,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703798502] [2021-12-06 22:58:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:04,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:58:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:58:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:58:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:58:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:58:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:58:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:58:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:58:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:58:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:58:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:58:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 22:58:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:58:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 22:58:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:58:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:04,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:04,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703798502] [2021-12-06 22:58:04,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703798502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:04,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:04,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:04,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347640114] [2021-12-06 22:58:04,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:04,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:04,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:04,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:04,101 INFO L87 Difference]: Start difference. First operand 3124 states and 5301 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:05,438 INFO L93 Difference]: Finished difference Result 7699 states and 13282 transitions. [2021-12-06 22:58:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:05,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 177 [2021-12-06 22:58:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:05,463 INFO L225 Difference]: With dead ends: 7699 [2021-12-06 22:58:05,463 INFO L226 Difference]: Without dead ends: 5060 [2021-12-06 22:58:05,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:05,470 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 1718 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:05,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 1848 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:58:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5060 states. [2021-12-06 22:58:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5060 to 4814. [2021-12-06 22:58:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4814 states, 4005 states have (on average 1.6444444444444444) internal successors, (6586), 4013 states have internal predecessors, (6586), 775 states have call successors, (775), 29 states have call predecessors, (775), 33 states have return successors, (848), 773 states have call predecessors, (848), 774 states have call successors, (848) [2021-12-06 22:58:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4814 states to 4814 states and 8209 transitions. [2021-12-06 22:58:05,717 INFO L78 Accepts]: Start accepts. Automaton has 4814 states and 8209 transitions. Word has length 177 [2021-12-06 22:58:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:05,717 INFO L470 AbstractCegarLoop]: Abstraction has 4814 states and 8209 transitions. [2021-12-06 22:58:05,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4814 states and 8209 transitions. [2021-12-06 22:58:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 22:58:05,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:05,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:05,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:58:05,733 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:05,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1925488083, now seen corresponding path program 1 times [2021-12-06 22:58:05,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:05,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834830484] [2021-12-06 22:58:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:05,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:58:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:58:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:58:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:58:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:58:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:58:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:58:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:58:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:58:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:58:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:58:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:58:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 22:58:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 22:58:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:58:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:05,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:05,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834830484] [2021-12-06 22:58:05,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834830484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:05,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:05,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:05,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056208610] [2021-12-06 22:58:05,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:05,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:05,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:05,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:05,824 INFO L87 Difference]: Start difference. First operand 4814 states and 8209 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:07,258 INFO L93 Difference]: Finished difference Result 11900 states and 20659 transitions. [2021-12-06 22:58:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:07,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2021-12-06 22:58:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:07,307 INFO L225 Difference]: With dead ends: 11900 [2021-12-06 22:58:07,307 INFO L226 Difference]: Without dead ends: 7903 [2021-12-06 22:58:07,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:07,316 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 1721 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:07,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 1875 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:58:07,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7903 states. [2021-12-06 22:58:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7903 to 7657. [2021-12-06 22:58:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7657 states, 6355 states have (on average 1.6435877261998426) internal successors, (10445), 6363 states have internal predecessors, (10445), 1268 states have call successors, (1268), 29 states have call predecessors, (1268), 33 states have return successors, (1385), 1266 states have call predecessors, (1385), 1267 states have call successors, (1385) [2021-12-06 22:58:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7657 states to 7657 states and 13098 transitions. [2021-12-06 22:58:07,695 INFO L78 Accepts]: Start accepts. Automaton has 7657 states and 13098 transitions. Word has length 178 [2021-12-06 22:58:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:07,695 INFO L470 AbstractCegarLoop]: Abstraction has 7657 states and 13098 transitions. [2021-12-06 22:58:07,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 7657 states and 13098 transitions. [2021-12-06 22:58:07,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 22:58:07,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:07,722 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:07,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:58:07,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:07,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash 529353899, now seen corresponding path program 1 times [2021-12-06 22:58:07,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:07,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559883214] [2021-12-06 22:58:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:07,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:58:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:58:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 22:58:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:58:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:58:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:58:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:58:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:58:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:58:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:58:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:58:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:58:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 22:58:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:58:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 22:58:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:07,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:07,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559883214] [2021-12-06 22:58:07,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559883214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:07,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:07,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:07,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399217123] [2021-12-06 22:58:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:07,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:07,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:07,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:07,826 INFO L87 Difference]: Start difference. First operand 7657 states and 13098 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:09,367 INFO L93 Difference]: Finished difference Result 19515 states and 33935 transitions. [2021-12-06 22:58:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:09,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2021-12-06 22:58:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:09,405 INFO L225 Difference]: With dead ends: 19515 [2021-12-06 22:58:09,405 INFO L226 Difference]: Without dead ends: 13077 [2021-12-06 22:58:09,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:09,423 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 1719 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 2219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:09,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 1845 Invalid, 2219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:58:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13077 states. [2021-12-06 22:58:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13077 to 12831. [2021-12-06 22:58:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12831 states, 10707 states have (on average 1.6445316148314186) internal successors, (17608), 10715 states have internal predecessors, (17608), 2090 states have call successors, (2090), 29 states have call predecessors, (2090), 33 states have return successors, (2285), 2088 states have call predecessors, (2285), 2089 states have call successors, (2285) [2021-12-06 22:58:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12831 states to 12831 states and 21983 transitions. [2021-12-06 22:58:10,032 INFO L78 Accepts]: Start accepts. Automaton has 12831 states and 21983 transitions. Word has length 179 [2021-12-06 22:58:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:10,033 INFO L470 AbstractCegarLoop]: Abstraction has 12831 states and 21983 transitions. [2021-12-06 22:58:10,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 12831 states and 21983 transitions. [2021-12-06 22:58:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-06 22:58:10,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:10,059 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:10,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:58:10,059 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:10,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1546993780, now seen corresponding path program 1 times [2021-12-06 22:58:10,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:10,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887660508] [2021-12-06 22:58:10,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:10,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 22:58:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:58:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:58:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:58:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:58:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:58:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:58:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:58:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:58:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:58:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:58:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:58:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 22:58:10,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:10,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887660508] [2021-12-06 22:58:10,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887660508] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:10,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:10,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:10,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219550227] [2021-12-06 22:58:10,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:10,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:10,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:10,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:10,141 INFO L87 Difference]: Start difference. First operand 12831 states and 21983 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:58:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:12,116 INFO L93 Difference]: Finished difference Result 30998 states and 53635 transitions. [2021-12-06 22:58:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:12,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2021-12-06 22:58:12,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:12,163 INFO L225 Difference]: With dead ends: 30998 [2021-12-06 22:58:12,163 INFO L226 Difference]: Without dead ends: 20390 [2021-12-06 22:58:12,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:12,181 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 1712 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:12,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 1849 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 22:58:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20390 states. [2021-12-06 22:58:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20390 to 20144. [2021-12-06 22:58:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20144 states, 16817 states have (on average 1.620621989653327) internal successors, (27254), 16825 states have internal predecessors, (27254), 3293 states have call successors, (3293), 29 states have call predecessors, (3293), 33 states have return successors, (3632), 3291 states have call predecessors, (3632), 3292 states have call successors, (3632) [2021-12-06 22:58:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20144 states to 20144 states and 34179 transitions. [2021-12-06 22:58:13,212 INFO L78 Accepts]: Start accepts. Automaton has 20144 states and 34179 transitions. Word has length 161 [2021-12-06 22:58:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:13,212 INFO L470 AbstractCegarLoop]: Abstraction has 20144 states and 34179 transitions. [2021-12-06 22:58:13,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:58:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 20144 states and 34179 transitions. [2021-12-06 22:58:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-06 22:58:13,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:13,241 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:13,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:58:13,241 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:13,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash 898706218, now seen corresponding path program 1 times [2021-12-06 22:58:13,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:13,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841305917] [2021-12-06 22:58:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:13,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:58:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:58:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:58:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:58:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:58:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 22:58:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:58:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 22:58:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:58:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 22:58:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:58:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:58:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:58:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-06 22:58:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:58:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:13,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:13,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841305917] [2021-12-06 22:58:13,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841305917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:13,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:13,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:13,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042495245] [2021-12-06 22:58:13,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:13,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:13,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:13,344 INFO L87 Difference]: Start difference. First operand 20144 states and 34179 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:15,883 INFO L93 Difference]: Finished difference Result 53440 states and 92169 transitions. [2021-12-06 22:58:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:15,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2021-12-06 22:58:15,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:15,977 INFO L225 Difference]: With dead ends: 53440 [2021-12-06 22:58:15,977 INFO L226 Difference]: Without dead ends: 36196 [2021-12-06 22:58:16,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:16,011 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 1711 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 815 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:16,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 1847 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 22:58:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36196 states. [2021-12-06 22:58:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36196 to 35950. [2021-12-06 22:58:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35950 states, 30173 states have (on average 1.6178702813773904) internal successors, (48816), 30181 states have internal predecessors, (48816), 5743 states have call successors, (5743), 29 states have call predecessors, (5743), 33 states have return successors, (6356), 5741 states have call predecessors, (6356), 5742 states have call successors, (6356) [2021-12-06 22:58:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35950 states to 35950 states and 60915 transitions. [2021-12-06 22:58:17,795 INFO L78 Accepts]: Start accepts. Automaton has 35950 states and 60915 transitions. Word has length 181 [2021-12-06 22:58:17,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:17,795 INFO L470 AbstractCegarLoop]: Abstraction has 35950 states and 60915 transitions. [2021-12-06 22:58:17,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 35950 states and 60915 transitions. [2021-12-06 22:58:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 22:58:17,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:17,835 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:17,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:58:17,836 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash -475644443, now seen corresponding path program 1 times [2021-12-06 22:58:17,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:17,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167668540] [2021-12-06 22:58:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:17,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:58:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:58:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:58:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:58:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:58:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 22:58:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:58:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:58:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:58:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 22:58:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:58:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 22:58:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:58:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 22:58:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:58:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:17,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:17,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167668540] [2021-12-06 22:58:17,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167668540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:17,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:17,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:17,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18402945] [2021-12-06 22:58:17,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:17,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:17,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:17,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:17,910 INFO L87 Difference]: Start difference. First operand 35950 states and 60915 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:21,777 INFO L93 Difference]: Finished difference Result 98287 states and 168728 transitions. [2021-12-06 22:58:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2021-12-06 22:58:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:21,943 INFO L225 Difference]: With dead ends: 98287 [2021-12-06 22:58:21,943 INFO L226 Difference]: Without dead ends: 66193 [2021-12-06 22:58:21,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:21,996 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 1711 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:21,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 1874 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:58:22,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66193 states. [2021-12-06 22:58:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66193 to 65947. [2021-12-06 22:58:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65947 states, 55657 states have (on average 1.6139748818657131) internal successors, (89829), 55665 states have internal predecessors, (89829), 10256 states have call successors, (10256), 29 states have call predecessors, (10256), 33 states have return successors, (11401), 10254 states have call predecessors, (11401), 10255 states have call successors, (11401) [2021-12-06 22:58:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65947 states to 65947 states and 111486 transitions. [2021-12-06 22:58:25,095 INFO L78 Accepts]: Start accepts. Automaton has 65947 states and 111486 transitions. Word has length 182 [2021-12-06 22:58:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:25,096 INFO L470 AbstractCegarLoop]: Abstraction has 65947 states and 111486 transitions. [2021-12-06 22:58:25,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 65947 states and 111486 transitions. [2021-12-06 22:58:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 22:58:25,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:25,147 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:25,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:58:25,148 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash 184176682, now seen corresponding path program 1 times [2021-12-06 22:58:25,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:25,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523627960] [2021-12-06 22:58:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:25,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 22:58:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:58:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:58:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:58:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:58:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 22:58:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:58:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:58:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:58:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:58:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 22:58:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 22:58:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 22:58:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:58:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 22:58:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:25,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:25,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523627960] [2021-12-06 22:58:25,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523627960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:25,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:25,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:58:25,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695592284] [2021-12-06 22:58:25,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:25,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:58:25,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:58:25,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:58:25,221 INFO L87 Difference]: Start difference. First operand 65947 states and 111486 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:31,224 INFO L93 Difference]: Finished difference Result 123948 states and 213161 transitions. [2021-12-06 22:58:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:58:31,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2021-12-06 22:58:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:31,552 INFO L225 Difference]: With dead ends: 123948 [2021-12-06 22:58:31,552 INFO L226 Difference]: Without dead ends: 123681 [2021-12-06 22:58:31,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:58:31,586 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 1711 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:31,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1730 Valid, 1836 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 22:58:31,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123681 states. [2021-12-06 22:58:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123681 to 123435. [2021-12-06 22:58:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123435 states, 104777 states have (on average 1.6089504375960373) internal successors, (168581), 104785 states have internal predecessors, (168581), 18624 states have call successors, (18624), 29 states have call predecessors, (18624), 33 states have return successors, (20815), 18622 states have call predecessors, (20815), 18623 states have call successors, (20815) [2021-12-06 22:58:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123435 states to 123435 states and 208020 transitions. [2021-12-06 22:58:37,996 INFO L78 Accepts]: Start accepts. Automaton has 123435 states and 208020 transitions. Word has length 183 [2021-12-06 22:58:37,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:58:37,996 INFO L470 AbstractCegarLoop]: Abstraction has 123435 states and 208020 transitions. [2021-12-06 22:58:37,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 123435 states and 208020 transitions. [2021-12-06 22:58:38,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:58:38,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:58:38,068 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:58:38,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:58:38,068 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:58:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:58:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2046465766, now seen corresponding path program 1 times [2021-12-06 22:58:38,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:58:38,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230780187] [2021-12-06 22:58:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:58:38,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:58:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:58:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:58:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:58:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:58:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:58:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:58:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:58:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:58:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:58:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:58:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:58:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:58:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 22:58:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:58:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:58:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:58:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 22:58:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:58:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-06 22:58:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:58:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:58:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:58:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:58:38,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:58:38,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230780187] [2021-12-06 22:58:38,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230780187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:58:38,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:58:38,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:58:38,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417089136] [2021-12-06 22:58:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:58:38,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:58:38,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:58:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:58:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:58:38,177 INFO L87 Difference]: Start difference. First operand 123435 states and 208020 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:58:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:49,565 INFO L93 Difference]: Finished difference Result 237777 states and 408575 transitions. [2021-12-06 22:58:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 22:58:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2021-12-06 22:58:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:50,398 INFO L225 Difference]: With dead ends: 237777 [2021-12-06 22:58:50,398 INFO L226 Difference]: Without dead ends: 237518 [2021-12-06 22:58:50,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:58:50,481 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 3615 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 1691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 6084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1691 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:50,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3632 Valid, 2995 Invalid, 6084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1691 Valid, 4393 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 22:58:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237518 states. [2021-12-06 22:59:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237518 to 237012. [2021-12-06 22:59:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237012 states, 201199 states have (on average 1.6122744148827777) internal successors, (324388), 201155 states have internal predecessors, (324388), 35750 states have call successors, (35750), 57 states have call predecessors, (35750), 62 states have return successors, (39033), 35803 states have call predecessors, (39033), 35748 states have call successors, (39033) [2021-12-06 22:59:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237012 states to 237012 states and 399171 transitions. [2021-12-06 22:59:02,505 INFO L78 Accepts]: Start accepts. Automaton has 237012 states and 399171 transitions. Word has length 184 [2021-12-06 22:59:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:02,505 INFO L470 AbstractCegarLoop]: Abstraction has 237012 states and 399171 transitions. [2021-12-06 22:59:02,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 5 states have internal predecessors, (114), 2 states have call successors, (24), 7 states have call predecessors, (24), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:59:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 237012 states and 399171 transitions. [2021-12-06 22:59:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-06 22:59:02,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:02,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:02,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:59:02,605 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash -20285843, now seen corresponding path program 1 times [2021-12-06 22:59:02,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:02,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168178613] [2021-12-06 22:59:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:02,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:59:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:59:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:59:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:59:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:59:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:59:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 22:59:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:59:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:59:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:59:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 22:59:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:59:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 22:59:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 22:59:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 22:59:02,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:02,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168178613] [2021-12-06 22:59:02,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168178613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:02,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:02,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 22:59:02,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523982741] [2021-12-06 22:59:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:02,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 22:59:02,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 22:59:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:59:02,728 INFO L87 Difference]: Start difference. First operand 237012 states and 399171 transitions. Second operand has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 8 states have internal predecessors, (115), 5 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-06 22:59:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:14,078 INFO L93 Difference]: Finished difference Result 238086 states and 407084 transitions. [2021-12-06 22:59:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:59:14,079 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 8 states have internal predecessors, (115), 5 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 185 [2021-12-06 22:59:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:14,894 INFO L225 Difference]: With dead ends: 238086 [2021-12-06 22:59:14,894 INFO L226 Difference]: Without dead ends: 237542 [2021-12-06 22:59:14,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 22:59:14,974 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 2351 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 5607 mSolverCounterSat, 1234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 3735 SdHoareTripleChecker+Invalid, 6841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1234 IncrementalHoareTripleChecker+Valid, 5607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:14,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2370 Valid, 3735 Invalid, 6841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1234 Valid, 5607 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 22:59:15,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237542 states. [2021-12-06 22:59:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237542 to 237057. [2021-12-06 22:59:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237057 states, 201229 states have (on average 1.6122377987268237) internal successors, (324429), 201188 states have internal predecessors, (324429), 35763 states have call successors, (35763), 59 states have call predecessors, (35763), 64 states have return successors, (39044), 35813 states have call predecessors, (39044), 35757 states have call successors, (39044) [2021-12-06 22:59:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237057 states to 237057 states and 399236 transitions. [2021-12-06 22:59:27,187 INFO L78 Accepts]: Start accepts. Automaton has 237057 states and 399236 transitions. Word has length 185 [2021-12-06 22:59:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:27,188 INFO L470 AbstractCegarLoop]: Abstraction has 237057 states and 399236 transitions. [2021-12-06 22:59:27,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 8 states have internal predecessors, (115), 5 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-06 22:59:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 237057 states and 399236 transitions. [2021-12-06 22:59:27,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 22:59:27,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:27,291 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:27,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:59:27,291 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:27,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash -354718875, now seen corresponding path program 1 times [2021-12-06 22:59:27,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:27,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541983111] [2021-12-06 22:59:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:27,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:59:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:59:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:59:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 22:59:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:59:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:59:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:59:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:59:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 22:59:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:59:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:59:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:59:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:59:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:59:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:59:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:59:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:59:27,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:27,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541983111] [2021-12-06 22:59:27,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541983111] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:27,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689210375] [2021-12-06 22:59:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:27,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:27,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:27,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:27,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:59:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:27,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 22:59:27,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 22:59:27,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:59:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 22:59:28,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689210375] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:59:28,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:59:28,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-06 22:59:28,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308301281] [2021-12-06 22:59:28,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:59:28,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 22:59:28,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 22:59:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:59:28,091 INFO L87 Difference]: Start difference. First operand 237057 states and 399236 transitions. Second operand has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (55), 12 states have call predecessors, (55), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47) [2021-12-06 23:00:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:00:50,494 INFO L93 Difference]: Finished difference Result 1421435 states and 2494167 transitions. [2021-12-06 23:00:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-12-06 23:00:50,495 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (55), 12 states have call predecessors, (55), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47) Word has length 165 [2021-12-06 23:00:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:00:56,354 INFO L225 Difference]: With dead ends: 1421435 [2021-12-06 23:00:56,354 INFO L226 Difference]: Without dead ends: 1420886 [2021-12-06 23:00:57,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11470 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3987, Invalid=28955, Unknown=0, NotChecked=0, Total=32942 [2021-12-06 23:00:57,025 INFO L933 BasicCegarLoop]: 2212 mSDtfsCounter, 9532 mSDsluCounter, 16563 mSDsCounter, 0 mSdLazyCounter, 51227 mSolverCounterSat, 10635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9564 SdHoareTripleChecker+Valid, 18775 SdHoareTripleChecker+Invalid, 61862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10635 IncrementalHoareTripleChecker+Valid, 51227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:00:57,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9564 Valid, 18775 Invalid, 61862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10635 Valid, 51227 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2021-12-06 23:00:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420886 states. [2021-12-06 23:02:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420886 to 946039. [2021-12-06 23:02:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946039 states, 803013 states have (on average 1.6122765135807267) internal successors, (1294679), 802587 states have internal predecessors, (1294679), 142644 states have call successors, (142644), 324 states have call predecessors, (142644), 381 states have return successors, (193079), 143159 states have call predecessors, (193079), 142608 states have call successors, (193079) [2021-12-06 23:02:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946039 states to 946039 states and 1630402 transitions. [2021-12-06 23:02:07,304 INFO L78 Accepts]: Start accepts. Automaton has 946039 states and 1630402 transitions. Word has length 165 [2021-12-06 23:02:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:02:07,304 INFO L470 AbstractCegarLoop]: Abstraction has 946039 states and 1630402 transitions. [2021-12-06 23:02:07,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (55), 12 states have call predecessors, (55), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47) [2021-12-06 23:02:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 946039 states and 1630402 transitions. [2021-12-06 23:02:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-06 23:02:07,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:02:07,834 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:02:07,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:02:08,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:02:08,037 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:02:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:02:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1189691690, now seen corresponding path program 1 times [2021-12-06 23:02:08,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:02:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548065297] [2021-12-06 23:02:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:08,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:02:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:02:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:02:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:02:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:02:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:02:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:02:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:02:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:02:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:02:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:02:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:02:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:02:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 23:02:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 23:02:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 23:02:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 23:02:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 23:02:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 23:02:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:02:08,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:02:08,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548065297] [2021-12-06 23:02:08,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548065297] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:02:08,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513693599] [2021-12-06 23:02:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:02:08,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:02:08,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:02:08,175 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:02:08,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:02:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:02:08,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:02:08,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:02:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:02:08,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:02:08,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513693599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:02:08,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:02:08,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-06 23:02:08,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003273530] [2021-12-06 23:02:08,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:02:08,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:02:08,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:02:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:02:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:02:08,479 INFO L87 Difference]: Start difference. First operand 946039 states and 1630402 transitions. Second operand has 9 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 23:02:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:02:53,273 INFO L93 Difference]: Finished difference Result 950161 states and 1636497 transitions. [2021-12-06 23:02:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:02:53,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 167 [2021-12-06 23:02:53,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:02:56,828 INFO L225 Difference]: With dead ends: 950161 [2021-12-06 23:02:56,828 INFO L226 Difference]: Without dead ends: 946063 [2021-12-06 23:02:57,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:02:57,276 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 715 mSDsluCounter, 4044 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:02:57,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 4722 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:02:57,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946063 states. [2021-12-06 23:03:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946063 to 946063. [2021-12-06 23:03:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946063 states, 803025 states have (on average 1.6122673640297625) internal successors, (1294691), 802611 states have internal predecessors, (1294691), 142644 states have call successors, (142644), 324 states have call predecessors, (142644), 393 states have return successors, (193123), 143159 states have call predecessors, (193123), 142608 states have call successors, (193123) [2021-12-06 23:03:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946063 states to 946063 states and 1630458 transitions. [2021-12-06 23:03:59,110 INFO L78 Accepts]: Start accepts. Automaton has 946063 states and 1630458 transitions. Word has length 167 [2021-12-06 23:03:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:03:59,110 INFO L470 AbstractCegarLoop]: Abstraction has 946063 states and 1630458 transitions. [2021-12-06 23:03:59,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 23:03:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 946063 states and 1630458 transitions. [2021-12-06 23:03:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-06 23:03:59,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:03:59,645 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:03:59,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:03:59,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 23:03:59,847 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:03:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:03:59,849 INFO L85 PathProgramCache]: Analyzing trace with hash 310147130, now seen corresponding path program 1 times [2021-12-06 23:03:59,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:03:59,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306538010] [2021-12-06 23:03:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:59,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:03:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:03:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:03:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 23:03:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 23:03:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 23:03:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 23:03:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 23:03:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 23:03:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 23:03:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 23:03:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 23:03:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 23:03:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 23:03:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 23:03:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 23:03:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 23:03:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 23:03:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 23:03:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:03:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 23:03:59,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:03:59,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306538010] [2021-12-06 23:03:59,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306538010] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:03:59,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225931276] [2021-12-06 23:03:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:03:59,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:03:59,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:03:59,950 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:03:59,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:04:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:04:00,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:04:00,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:04:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:04:00,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:04:00,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225931276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:04:00,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:04:00,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-06 23:04:00,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535727795] [2021-12-06 23:04:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:04:00,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:04:00,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:04:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:04:00,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:04:00,229 INFO L87 Difference]: Start difference. First operand 946063 states and 1630458 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:04:49,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:04:49,796 INFO L93 Difference]: Finished difference Result 1419108 states and 2453898 transitions. [2021-12-06 23:04:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:04:49,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2021-12-06 23:04:49,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:04:53,544 INFO L225 Difference]: With dead ends: 1419108 [2021-12-06 23:04:53,544 INFO L226 Difference]: Without dead ends: 946095 [2021-12-06 23:04:54,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:04:54,767 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 158 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:04:54,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 2559 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:04:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946095 states. [2021-12-06 23:05:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946095 to 946063. [2021-12-06 23:05:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946063 states, 803025 states have (on average 1.6122648734472775) internal successors, (1294689), 802611 states have internal predecessors, (1294689), 142644 states have call successors, (142644), 324 states have call predecessors, (142644), 393 states have return successors, (193123), 143159 states have call predecessors, (193123), 142608 states have call successors, (193123) [2021-12-06 23:05:58,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946063 states to 946063 states and 1630456 transitions. [2021-12-06 23:05:58,537 INFO L78 Accepts]: Start accepts. Automaton has 946063 states and 1630456 transitions. Word has length 167 [2021-12-06 23:05:58,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:58,537 INFO L470 AbstractCegarLoop]: Abstraction has 946063 states and 1630456 transitions. [2021-12-06 23:05:58,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 23:05:58,537 INFO L276 IsEmpty]: Start isEmpty. Operand 946063 states and 1630456 transitions. [2021-12-06 23:05:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-06 23:05:59,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:59,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:59,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:05:59,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 23:05:59,294 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:59,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:59,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1665326098, now seen corresponding path program 1 times [2021-12-06 23:05:59,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:59,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486269891] [2021-12-06 23:05:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:59,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 23:05:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 23:05:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:05:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 23:05:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 23:05:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 23:05:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 23:05:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 23:05:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 23:05:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 23:05:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 23:05:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 23:05:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 23:05:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 23:05:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 23:05:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 23:05:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 23:05:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 23:05:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:05:59,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:59,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486269891] [2021-12-06 23:05:59,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486269891] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:59,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386002722] [2021-12-06 23:05:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:59,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:59,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:59,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:59,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ddc5e90f-6a34-4332-8c7d-5ce60d7395a9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:05:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:59,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:05:59,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:05:59,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 23:06:00,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386002722] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:06:00,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:06:00,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 5] total 18 [2021-12-06 23:06:00,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152068038] [2021-12-06 23:06:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:06:00,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:06:00,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:06:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-12-06 23:06:00,171 INFO L87 Difference]: Start difference. First operand 946063 states and 1630456 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18)