./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 459b394196a1606fd18d87736056d8c2e811f354c9c1071577c3ccd936910200 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:25:15,035 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:25:15,102 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:25:15,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:25:15,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:25:15,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:25:15,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:25:15,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:25:15,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:25:15,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:25:15,138 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:25:15,138 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:25:15,139 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:25:15,139 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:25:15,140 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:25:15,140 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:25:15,141 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:25:15,141 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:25:15,142 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:25:15,142 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:25:15,143 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:25:15,144 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:25:15,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:25:15,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:25:15,145 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:25:15,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:25:15,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:25:15,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:25:15,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:25:15,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:25:15,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:25:15,148 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:25:15,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:25:15,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:25:15,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:25:15,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:25:15,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:25:15,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:25:15,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:25:15,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:25:15,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:25:15,151 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:25:15,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:25:15,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:25:15,152 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:25:15,152 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:25:15,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:25:15,152 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 459b394196a1606fd18d87736056d8c2e811f354c9c1071577c3ccd936910200 [2023-12-02 16:25:15,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:25:15,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:25:15,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:25:15,401 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:25:15,401 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:25:15,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c [2023-12-02 16:25:18,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:25:18,417 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:25:18,418 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c [2023-12-02 16:25:18,439 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/data/34d5ee2cf/eeafc0aac126403aac6c7a919a3cd21b/FLAGb6613ad7a [2023-12-02 16:25:18,453 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/data/34d5ee2cf/eeafc0aac126403aac6c7a919a3cd21b [2023-12-02 16:25:18,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:25:18,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:25:18,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:25:18,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:25:18,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:25:18,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:25:18" (1/1) ... [2023-12-02 16:25:18,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58361de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:18, skipping insertion in model container [2023-12-02 16:25:18,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:25:18" (1/1) ... [2023-12-02 16:25:18,539 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:25:18,870 WARN L240 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_c21f92bf-dbcf-4c10-ba29-f47861446366/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c[29342,29355] [2023-12-02 16:25:19,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:25:19,017 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:25:19,027 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-12-02 16:25:19,029 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [97] [2023-12-02 16:25:19,029 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [318] [2023-12-02 16:25:19,029 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [467] [2023-12-02 16:25:19,029 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [484] [2023-12-02 16:25:19,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [528] [2023-12-02 16:25:19,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [930] [2023-12-02 16:25:19,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1296] [2023-12-02 16:25:19,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1305] [2023-12-02 16:25:19,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1583] [2023-12-02 16:25:19,031 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1908] [2023-12-02 16:25:19,078 WARN L240 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_c21f92bf-dbcf-4c10-ba29-f47861446366/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c[29342,29355] [2023-12-02 16:25:19,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:25:19,180 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:25:19,188 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:25:19,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19 WrapperNode [2023-12-02 16:25:19,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:25:19,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:25:19,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:25:19,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:25:19,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,262 INFO L138 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 891 [2023-12-02 16:25:19,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:25:19,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:25:19,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:25:19,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:25:19,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:25:19,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:25:19,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:25:19,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:25:19,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (1/1) ... [2023-12-02 16:25:19,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:25:19,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:25:19,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:25:19,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 16:25:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 16:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 16:25:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 16:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 16:25:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 16:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 16:25:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 16:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 16:25:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 16:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 16:25:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 16:25:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 16:25:19,406 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 16:25:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 16:25:19,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 16:25:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 16:25:19,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 16:25:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 16:25:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 16:25:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 16:25:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 16:25:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 16:25:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 16:25:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 16:25:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:25:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 16:25:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 16:25:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 16:25:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 16:25:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 16:25:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 16:25:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 16:25:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 16:25:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 16:25:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 16:25:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 16:25:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 16:25:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 16:25:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 16:25:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 16:25:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 16:25:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 16:25:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 16:25:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:25:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 16:25:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 16:25:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:25:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:25:19,584 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:25:19,586 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:25:20,222 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:25:20,632 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:25:20,633 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:25:20,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:25:20 BoogieIcfgContainer [2023-12-02 16:25:20,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:25:20,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:25:20,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:25:20,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:25:20,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:25:18" (1/3) ... [2023-12-02 16:25:20,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706d586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:25:20, skipping insertion in model container [2023-12-02 16:25:20,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:25:19" (2/3) ... [2023-12-02 16:25:20,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706d586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:25:20, skipping insertion in model container [2023-12-02 16:25:20,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:25:20" (3/3) ... [2023-12-02 16:25:20,643 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product28.cil.c [2023-12-02 16:25:20,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:25:20,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:25:20,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:25:20,726 INFO L357 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35f07fd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:25:20,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:25:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:25:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 16:25:20,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:20,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 16:25:20,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:20,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:20,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2057937296, now seen corresponding path program 1 times [2023-12-02 16:25:20,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:20,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97555219] [2023-12-02 16:25:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:20,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:25:21,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:21,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97555219] [2023-12-02 16:25:21,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97555219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:21,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:21,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:25:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308914009] [2023-12-02 16:25:21,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:25:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:25:21,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:25:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:25:21,109 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:25:21,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:21,225 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2023-12-02 16:25:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:25:21,228 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2023-12-02 16:25:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:21,240 INFO L225 Difference]: With dead ends: 277 [2023-12-02 16:25:21,241 INFO L226 Difference]: Without dead ends: 177 [2023-12-02 16:25:21,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:25:21,249 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:21,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:25:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-02 16:25:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-12-02 16:25:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-02 16:25:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2023-12-02 16:25:21,331 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2023-12-02 16:25:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:21,332 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2023-12-02 16:25:21,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:25:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2023-12-02 16:25:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 16:25:21,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:21,338 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 16:25:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:25:21,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:21,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1338101138, now seen corresponding path program 1 times [2023-12-02 16:25:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:21,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617245449] [2023-12-02 16:25:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:25:21,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:21,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617245449] [2023-12-02 16:25:21,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617245449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:21,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:21,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:25:21,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368787757] [2023-12-02 16:25:21,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:21,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:25:21,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:25:21,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:25:21,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:25:21,562 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:25:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:21,671 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2023-12-02 16:25:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:25:21,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2023-12-02 16:25:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:21,675 INFO L225 Difference]: With dead ends: 273 [2023-12-02 16:25:21,675 INFO L226 Difference]: Without dead ends: 179 [2023-12-02 16:25:21,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:25:21,678 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:21,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:25:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-02 16:25:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-12-02 16:25:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-02 16:25:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2023-12-02 16:25:21,702 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2023-12-02 16:25:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:21,702 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2023-12-02 16:25:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:25:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2023-12-02 16:25:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 16:25:21,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:21,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 16:25:21,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:25:21,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:21,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1777972981, now seen corresponding path program 1 times [2023-12-02 16:25:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:21,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797289354] [2023-12-02 16:25:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:25:21,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797289354] [2023-12-02 16:25:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797289354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:21,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:25:21,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:25:21,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901458547] [2023-12-02 16:25:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:21,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:25:21,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:25:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:25:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:25:21,839 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:25:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:21,940 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2023-12-02 16:25:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:25:21,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2023-12-02 16:25:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:21,943 INFO L225 Difference]: With dead ends: 388 [2023-12-02 16:25:21,943 INFO L226 Difference]: Without dead ends: 227 [2023-12-02 16:25:21,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:25:21,947 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 57 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:21,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 421 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:25:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-02 16:25:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2023-12-02 16:25:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-02 16:25:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2023-12-02 16:25:21,970 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2023-12-02 16:25:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:21,970 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2023-12-02 16:25:21,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:25:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2023-12-02 16:25:21,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 16:25:21,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:21,974 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 16:25:21,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:25:21,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:21,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:21,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1445635896, now seen corresponding path program 1 times [2023-12-02 16:25:21,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:25:21,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647655871] [2023-12-02 16:25:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:21,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:25:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:25:22,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:25:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647655871] [2023-12-02 16:25:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647655871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:25:22,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143164493] [2023-12-02 16:25:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:22,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:25:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:25:22,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:25:22,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:25:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:22,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:25:22,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:25:22,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:25:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:25:22,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143164493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:25:22,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1709398583] [2023-12-02 16:25:22,640 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2023-12-02 16:25:22,641 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:25:22,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:25:22,649 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:25:22,650 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:26:03,456 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 16:26:03,683 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 16:26:03,896 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:27:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1709398583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:09,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:27:09,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 16:27:09,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970696434] [2023-12-02 16:27:09,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:09,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 16:27:09,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:09,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 16:27:09,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:27:09,995 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 24 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 16:27:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:27,270 INFO L93 Difference]: Finished difference Result 489 states and 720 transitions. [2023-12-02 16:27:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 16:27:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 68 [2023-12-02 16:27:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:27,274 INFO L225 Difference]: With dead ends: 489 [2023-12-02 16:27:27,274 INFO L226 Difference]: Without dead ends: 285 [2023-12-02 16:27:27,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 72.8s TimeCoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2023-12-02 16:27:27,277 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 109 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:27,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 2812 Invalid, 2421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-02 16:27:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-02 16:27:27,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 245. [2023-12-02 16:27:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.4) internal successors, (224), 163 states have internal predecessors, (224), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-02 16:27:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 345 transitions. [2023-12-02 16:27:27,367 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 345 transitions. Word has length 68 [2023-12-02 16:27:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:27,368 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 345 transitions. [2023-12-02 16:27:27,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 16:27:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 345 transitions. [2023-12-02 16:27:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 16:27:27,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:27,371 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-12-02 16:27:27,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:27:27,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:27,572 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:27,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:27,573 INFO L85 PathProgramCache]: Analyzing trace with hash 642084294, now seen corresponding path program 1 times [2023-12-02 16:27:27,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:27,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039599053] [2023-12-02 16:27:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:27,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:27:27,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:27,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039599053] [2023-12-02 16:27:27,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039599053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:27:27,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:27:27,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:27:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502037320] [2023-12-02 16:27:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:27,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:27:27,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:27:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:27:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:27:27,649 INFO L87 Difference]: Start difference. First operand 245 states and 345 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 16:27:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:27,831 INFO L93 Difference]: Finished difference Result 583 states and 854 transitions. [2023-12-02 16:27:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:27:27,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2023-12-02 16:27:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:27,834 INFO L225 Difference]: With dead ends: 583 [2023-12-02 16:27:27,835 INFO L226 Difference]: Without dead ends: 362 [2023-12-02 16:27:27,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:27:27,837 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 55 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:27,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 420 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:27:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-02 16:27:27,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2023-12-02 16:27:27,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 247 states have (on average 1.45748987854251) internal successors, (360), 250 states have internal predecessors, (360), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 16:27:27,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2023-12-02 16:27:27,929 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 73 [2023-12-02 16:27:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:27,930 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2023-12-02 16:27:27,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 16:27:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2023-12-02 16:27:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 16:27:27,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:27,933 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-12-02 16:27:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:27:27,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:27,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1500071436, now seen corresponding path program 1 times [2023-12-02 16:27:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042436627] [2023-12-02 16:27:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:27:28,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:27:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042436627] [2023-12-02 16:27:28,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042436627] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:28,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370900588] [2023-12-02 16:27:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:28,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:28,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:28,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:28,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:27:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:28,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:27:28,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:27:28,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:27:28,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370900588] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:27:28,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1725090456] [2023-12-02 16:27:28,360 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2023-12-02 16:27:28,361 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:27:28,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:27:28,361 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:27:28,362 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:28:29,999 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 16:28:30,212 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 487 for LOIs [2023-12-02 16:28:32,284 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:28:53,912 WARN L293 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 487 DAG size of output: 487 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:29:03,518 WARN L293 SmtUtils]: Spent 9.43s on a formula simplification. DAG size of input: 517 DAG size of output: 513 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:29:44,119 WARN L293 SmtUtils]: Spent 9.56s on a formula simplification. DAG size of input: 514 DAG size of output: 514 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:29:53,999 WARN L293 SmtUtils]: Spent 9.55s on a formula simplification. DAG size of input: 515 DAG size of output: 514 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:30:04,682 WARN L293 SmtUtils]: Spent 10.28s on a formula simplification. DAG size of input: 521 DAG size of output: 520 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:30:15,214 WARN L293 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 519 DAG size of output: 518 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:30:25,683 WARN L293 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 523 DAG size of output: 522 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:30:36,268 WARN L293 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 521 DAG size of output: 520 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:30:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1725090456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:30:47,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:30:47,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 16:30:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216238656] [2023-12-02 16:30:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:30:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 16:30:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:30:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 16:30:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 16:30:47,764 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 28 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 16:31:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:31:05,076 INFO L93 Difference]: Finished difference Result 730 states and 1115 transitions. [2023-12-02 16:31:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 16:31:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2023-12-02 16:31:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:31:05,080 INFO L225 Difference]: With dead ends: 730 [2023-12-02 16:31:05,080 INFO L226 Difference]: Without dead ends: 436 [2023-12-02 16:31:05,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 139.0s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 16:31:05,082 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 97 mSDsluCounter, 2675 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:31:05,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 2864 Invalid, 2563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2023-12-02 16:31:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-12-02 16:31:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 371. [2023-12-02 16:31:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 259 states have (on average 1.4555984555984556) internal successors, (377), 262 states have internal predecessors, (377), 87 states have call successors, (87), 24 states have call predecessors, (87), 24 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-02 16:31:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 550 transitions. [2023-12-02 16:31:05,189 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 550 transitions. Word has length 74 [2023-12-02 16:31:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:31:05,190 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 550 transitions. [2023-12-02 16:31:05,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 16:31:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 550 transitions. [2023-12-02 16:31:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 16:31:05,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:31:05,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 16:31:05,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:31:05,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 16:31:05,394 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:31:05,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:31:05,394 INFO L85 PathProgramCache]: Analyzing trace with hash -80845158, now seen corresponding path program 1 times [2023-12-02 16:31:05,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:31:05,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385841474] [2023-12-02 16:31:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:05,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:31:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:31:05,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:31:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385841474] [2023-12-02 16:31:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385841474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:31:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544639860] [2023-12-02 16:31:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:31:05,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:31:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:31:05,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:31:05,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:31:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:31:05,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:31:05,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:31:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:31:05,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:31:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:31:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544639860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:31:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1129560085] [2023-12-02 16:31:05,928 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-12-02 16:31:05,928 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:31:05,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:31:05,929 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:31:05,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:33:01,069 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 16:33:01,293 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 554 for LOIs [2023-12-02 16:33:03,108 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 563 for LOIs [2023-12-02 16:33:04,870 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 478 for LOIs [2023-12-02 16:33:05,622 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 16:33:05,835 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:33:58,844 WARN L293 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 596 DAG size of output: 588 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:34:04,597 WARN L293 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 597 DAG size of output: 588 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:34:54,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1129560085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:34:54,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:34:54,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 16:34:54,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826115218] [2023-12-02 16:34:54,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:34:54,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 16:34:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:34:54,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 16:34:54,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:34:54,941 INFO L87 Difference]: Start difference. First operand 371 states and 550 transitions. Second operand has 33 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 16:35:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:35:23,857 INFO L93 Difference]: Finished difference Result 755 states and 1150 transitions. [2023-12-02 16:35:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 16:35:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 77 [2023-12-02 16:35:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:35:23,860 INFO L225 Difference]: With dead ends: 755 [2023-12-02 16:35:23,860 INFO L226 Difference]: Without dead ends: 461 [2023-12-02 16:35:23,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 116.0s TimeCoverageRelationStatistics Valid=124, Invalid=1436, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 16:35:23,862 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 58 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 3605 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:35:23,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3265 Invalid, 3616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 3605 Invalid, 0 Unknown, 0 Unchecked, 21.6s Time] [2023-12-02 16:35:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-02 16:35:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 407. [2023-12-02 16:35:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 289 states have (on average 1.4498269896193772) internal successors, (419), 292 states have internal predecessors, (419), 90 states have call successors, (90), 27 states have call predecessors, (90), 27 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-02 16:35:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 598 transitions. [2023-12-02 16:35:24,015 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 598 transitions. Word has length 77 [2023-12-02 16:35:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:35:24,015 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 598 transitions. [2023-12-02 16:35:24,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 16:35:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 598 transitions. [2023-12-02 16:35:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 16:35:24,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:35:24,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-02 16:35:24,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:35:24,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 16:35:24,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:35:24,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:35:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash 10987643, now seen corresponding path program 1 times [2023-12-02 16:35:24,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:35:24,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664453033] [2023-12-02 16:35:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:35:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:35:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:35:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:35:24,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:35:24,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664453033] [2023-12-02 16:35:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664453033] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:35:24,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412959290] [2023-12-02 16:35:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:35:24,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:35:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:35:24,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:35:24,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:35:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:35:24,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:35:24,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:35:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:35:24,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:35:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:35:24,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412959290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:35:24,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [868666127] [2023-12-02 16:35:24,690 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2023-12-02 16:35:24,690 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:35:24,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:35:24,691 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:35:24,692 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:36:35,224 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 237 for LOIs [2023-12-02 16:36:35,441 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 239 for LOIs [2023-12-02 16:36:35,657 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:37:36,695 WARN L293 SmtUtils]: Spent 9.53s on a formula simplification. DAG size of input: 518 DAG size of output: 518 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:37:46,564 WARN L293 SmtUtils]: Spent 9.56s on a formula simplification. DAG size of input: 519 DAG size of output: 518 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:37:57,176 WARN L293 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 525 DAG size of output: 524 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:38:08,023 WARN L293 SmtUtils]: Spent 10.41s on a formula simplification. DAG size of input: 523 DAG size of output: 522 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:38:18,740 WARN L293 SmtUtils]: Spent 10.26s on a formula simplification. DAG size of input: 527 DAG size of output: 526 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:38:29,347 WARN L293 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 525 DAG size of output: 524 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:38:57,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [868666127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:38:57,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:38:57,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 16:38:57,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162146484] [2023-12-02 16:38:57,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:38:57,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 16:38:57,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:38:57,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 16:38:57,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 16:38:57,628 INFO L87 Difference]: Start difference. First operand 407 states and 598 transitions. Second operand has 32 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 16:39:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:18,573 INFO L93 Difference]: Finished difference Result 769 states and 1165 transitions. [2023-12-02 16:39:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 16:39:18,573 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 76 [2023-12-02 16:39:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:18,578 INFO L225 Difference]: With dead ends: 769 [2023-12-02 16:39:18,578 INFO L226 Difference]: Without dead ends: 475 [2023-12-02 16:39:18,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 148.8s TimeCoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 16:39:18,580 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 116 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:18,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 2834 Invalid, 2778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2023-12-02 16:39:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-02 16:39:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 427. [2023-12-02 16:39:18,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 309 states have (on average 1.4530744336569579) internal successors, (449), 312 states have internal predecessors, (449), 90 states have call successors, (90), 27 states have call predecessors, (90), 27 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-02 16:39:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 628 transitions. [2023-12-02 16:39:18,757 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 628 transitions. Word has length 76 [2023-12-02 16:39:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:18,757 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 628 transitions. [2023-12-02 16:39:18,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 23 states have internal predecessors, (44), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 16:39:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 628 transitions. [2023-12-02 16:39:18,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 16:39:18,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:18,759 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:18,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:39:18,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c21f92bf-dbcf-4c10-ba29-f47861446366/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 16:39:18,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:18,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:18,960 INFO L85 PathProgramCache]: Analyzing trace with hash 557592672, now seen corresponding path program 1 times [2023-12-02 16:39:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:18,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74678290] [2023-12-02 16:39:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:18,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 16:39:19,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:19,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74678290] [2023-12-02 16:39:19,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74678290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:19,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:19,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:39:19,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100370995] [2023-12-02 16:39:19,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:19,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:39:19,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:39:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:19,094 INFO L87 Difference]: Start difference. First operand 427 states and 628 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 16:39:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:19,368 INFO L93 Difference]: Finished difference Result 548 states and 769 transitions. [2023-12-02 16:39:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:39:19,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 79 [2023-12-02 16:39:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:19,371 INFO L225 Difference]: With dead ends: 548 [2023-12-02 16:39:19,371 INFO L226 Difference]: Without dead ends: 455 [2023-12-02 16:39:19,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:39:19,372 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 121 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:19,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 287 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:39:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-02 16:39:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2023-12-02 16:39:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 324 states have (on average 1.4320987654320987) internal successors, (464), 327 states have internal predecessors, (464), 96 states have call successors, (96), 35 states have call predecessors, (96), 34 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-02 16:39:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 655 transitions. [2023-12-02 16:39:19,562 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 655 transitions. Word has length 79 [2023-12-02 16:39:19,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:19,562 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 655 transitions. [2023-12-02 16:39:19,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 16:39:19,563 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 655 transitions. [2023-12-02 16:39:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-02 16:39:19,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:39:19,566 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:39:19,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:39:19,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:39:19,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:39:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash -136428354, now seen corresponding path program 1 times [2023-12-02 16:39:19,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:39:19,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072251529] [2023-12-02 16:39:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:39:19,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:39:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:39:19,756 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-02 16:39:19,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:39:19,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072251529] [2023-12-02 16:39:19,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072251529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:39:19,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:39:19,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:39:19,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330086544] [2023-12-02 16:39:19,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:39:19,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:39:19,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:39:19,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:39:19,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:39:19,759 INFO L87 Difference]: Start difference. First operand 455 states and 655 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 16:39:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:39:20,015 INFO L93 Difference]: Finished difference Result 519 states and 726 transitions. [2023-12-02 16:39:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:39:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 130 [2023-12-02 16:39:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:39:20,017 INFO L225 Difference]: With dead ends: 519 [2023-12-02 16:39:20,017 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 16:39:20,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:39:20,019 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 198 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:39:20,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 393 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:39:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 16:39:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 16:39:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:39:20,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 16:39:20,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2023-12-02 16:39:20,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:39:20,021 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 16:39:20,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-02 16:39:20,021 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 16:39:20,021 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 16:39:20,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:39:20,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:39:20,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.