./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/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_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/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_e6983b8a-2977-409b-aa13-649a06d05f2c/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 b9d5581bc5c458c0b8250652569dd3286beeda44b685a7a0cdda121612582c0c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:08:26,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:08:26,989 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:08:26,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:08:26,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:08:27,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:08:27,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:08:27,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:08:27,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:08:27,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:08:27,021 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:08:27,022 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:08:27,022 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:08:27,023 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:08:27,023 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:08:27,023 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:08:27,024 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:08:27,024 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:08:27,025 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:08:27,025 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:08:27,026 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:08:27,027 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:08:27,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:08:27,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:08:27,028 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:08:27,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:08:27,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:08:27,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:08:27,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:08:27,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:08:27,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:08:27,031 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:08:27,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:08:27,032 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:08:27,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:08:27,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:08:27,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:08:27,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:08:27,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:08:27,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:08:27,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:08:27,035 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:08:27,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:08:27,035 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:08:27,035 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:08:27,036 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:08:27,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:08:27,036 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_e6983b8a-2977-409b-aa13-649a06d05f2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d5581bc5c458c0b8250652569dd3286beeda44b685a7a0cdda121612582c0c [2023-12-02 13:08:27,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:08:27,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:08:27,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:08:27,267 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:08:27,267 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:08:27,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2023-12-02 13:08:29,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:08:30,220 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:08:30,221 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2023-12-02 13:08:30,242 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/data/afd276669/56e1da30cc224034ae7fa8d7babf0b70/FLAG09a921af0 [2023-12-02 13:08:30,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/data/afd276669/56e1da30cc224034ae7fa8d7babf0b70 [2023-12-02 13:08:30,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:08:30,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:08:30,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:08:30,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:08:30,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:08:30,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:30,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ad405d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30, skipping insertion in model container [2023-12-02 13:08:30,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:30,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:08:30,495 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_e6983b8a-2977-409b-aa13-649a06d05f2c/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c[1543,1556] [2023-12-02 13:08:30,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:08:30,824 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:08:30,832 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-02 13:08:30,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [57] [2023-12-02 13:08:30,833 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [389] [2023-12-02 13:08:30,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1458] [2023-12-02 13:08:30,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1493] [2023-12-02 13:08:30,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [1859] [2023-12-02 13:08:30,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1879] [2023-12-02 13:08:30,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1896] [2023-12-02 13:08:30,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2211] [2023-12-02 13:08:30,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2615] [2023-12-02 13:08:30,835 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2718] [2023-12-02 13:08:30,837 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_e6983b8a-2977-409b-aa13-649a06d05f2c/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c[1543,1556] [2023-12-02 13:08:30,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:08:30,942 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:08:30,948 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:08:30,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30 WrapperNode [2023-12-02 13:08:30,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:08:30,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:08:30,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:08:30,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:08:30,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,099 INFO L138 Inliner]: procedures = 128, calls = 214, calls flagged for inlining = 54, calls inlined = 49, statements flattened = 999 [2023-12-02 13:08:31,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:08:31,100 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:08:31,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:08:31,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:08:31,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:08:31,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:08:31,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:08:31,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:08:31,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (1/1) ... [2023-12-02 13:08:31,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:08:31,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:31,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:08:31,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:08:31,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-02 13:08:31,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-02 13:08:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 13:08:31,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 13:08:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-02 13:08:31,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-02 13:08:31,242 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 13:08:31,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 13:08:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 13:08:31,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 13:08:31,243 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2023-12-02 13:08:31,243 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2023-12-02 13:08:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 13:08:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 13:08:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 13:08:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 13:08:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 13:08:31,244 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 13:08:31,244 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 13:08:31,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 13:08:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 13:08:31,245 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 13:08:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 13:08:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 13:08:31,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 13:08:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 13:08:31,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 13:08:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:08:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-02 13:08:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-02 13:08:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 13:08:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 13:08:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 13:08:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 13:08:31,246 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 13:08:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 13:08:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 13:08:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 13:08:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 13:08:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 13:08:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 13:08:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 13:08:31,247 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 13:08:31,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 13:08:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:08:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 13:08:31,248 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 13:08:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-02 13:08:31,248 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-02 13:08:31,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:08:31,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:08:31,434 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:08:31,437 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:08:32,154 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:08:32,714 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:08:32,715 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:08:32,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:32 BoogieIcfgContainer [2023-12-02 13:08:32,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:08:32,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:08:32,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:08:32,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:08:32,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:08:30" (1/3) ... [2023-12-02 13:08:32,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fed94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:32, skipping insertion in model container [2023-12-02 13:08:32,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:30" (2/3) ... [2023-12-02 13:08:32,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fed94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:32, skipping insertion in model container [2023-12-02 13:08:32,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:32" (3/3) ... [2023-12-02 13:08:32,725 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product20.cil.c [2023-12-02 13:08:32,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:08:32,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:08:32,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:08:32,805 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;@69bad737, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:08:32,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:08:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 108 states have internal predecessors, (137), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-02 13:08:32,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 13:08:32,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:32,827 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] [2023-12-02 13:08:32,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:08:32,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2009047956, now seen corresponding path program 1 times [2023-12-02 13:08:32,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:32,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984569013] [2023-12-02 13:08:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:32,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:08:33,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:33,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984569013] [2023-12-02 13:08:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984569013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:33,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:33,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:08:33,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520895582] [2023-12-02 13:08:33,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:33,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:08:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:08:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:08:33,228 INFO L87 Difference]: Start difference. First operand has 182 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 108 states have internal predecessors, (137), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 13:08:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:33,348 INFO L93 Difference]: Finished difference Result 272 states and 361 transitions. [2023-12-02 13:08:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:08:33,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2023-12-02 13:08:33,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:33,362 INFO L225 Difference]: With dead ends: 272 [2023-12-02 13:08:33,362 INFO L226 Difference]: Without dead ends: 179 [2023-12-02 13:08:33,366 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 13:08:33,370 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:33,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:33,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-02 13:08:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-12-02 13:08:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 101 states have (on average 1.297029702970297) internal successors, (131), 105 states have internal predecessors, (131), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 13:08:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 238 transitions. [2023-12-02 13:08:33,428 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 238 transitions. Word has length 73 [2023-12-02 13:08:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:33,429 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 238 transitions. [2023-12-02 13:08:33,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 13:08:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 238 transitions. [2023-12-02 13:08:33,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 13:08:33,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:33,435 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] [2023-12-02 13:08:33,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:08:33,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:08:33,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:33,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1172032040, now seen corresponding path program 1 times [2023-12-02 13:08:33,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:33,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606509146] [2023-12-02 13:08:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:33,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:33,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:08:33,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:33,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606509146] [2023-12-02 13:08:33,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606509146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:33,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:33,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:08:33,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079632156] [2023-12-02 13:08:33,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:33,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:33,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:33,632 INFO L87 Difference]: Start difference. First operand 179 states and 238 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 13:08:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:33,744 INFO L93 Difference]: Finished difference Result 268 states and 346 transitions. [2023-12-02 13:08:33,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:33,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2023-12-02 13:08:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:33,748 INFO L225 Difference]: With dead ends: 268 [2023-12-02 13:08:33,748 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 13:08:33,750 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 13:08:33,751 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:33,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 13:08:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-02 13:08:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 107 states have internal predecessors, (133), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 13:08:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 240 transitions. [2023-12-02 13:08:33,773 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 240 transitions. Word has length 74 [2023-12-02 13:08:33,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:33,774 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 240 transitions. [2023-12-02 13:08:33,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 13:08:33,774 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 240 transitions. [2023-12-02 13:08:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 13:08:33,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:33,778 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:33,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:08:33,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:08:33,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:33,779 INFO L85 PathProgramCache]: Analyzing trace with hash -531297238, now seen corresponding path program 1 times [2023-12-02 13:08:33,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:33,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598135051] [2023-12-02 13:08:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:33,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:08:33,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598135051] [2023-12-02 13:08:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598135051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:33,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:33,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:08:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487401136] [2023-12-02 13:08:33,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:33,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:33,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:33,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:33,918 INFO L87 Difference]: Start difference. First operand 181 states and 240 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 13:08:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:34,039 INFO L93 Difference]: Finished difference Result 397 states and 547 transitions. [2023-12-02 13:08:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:34,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2023-12-02 13:08:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:34,043 INFO L225 Difference]: With dead ends: 397 [2023-12-02 13:08:34,043 INFO L226 Difference]: Without dead ends: 234 [2023-12-02 13:08:34,045 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 13:08:34,046 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 59 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:34,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 410 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:34,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-02 13:08:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2023-12-02 13:08:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 141 states have internal predecessors, (188), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 13:08:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 323 transitions. [2023-12-02 13:08:34,072 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 323 transitions. Word has length 79 [2023-12-02 13:08:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:34,073 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 323 transitions. [2023-12-02 13:08:34,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 13:08:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 323 transitions. [2023-12-02 13:08:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 13:08:34,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:34,076 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:34,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:08:34,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:08:34,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:34,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1052179680, now seen corresponding path program 1 times [2023-12-02 13:08:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:34,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658873584] [2023-12-02 13:08:34,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:34,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:08:34,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658873584] [2023-12-02 13:08:34,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658873584] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:08:34,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921931381] [2023-12-02 13:08:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:34,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:34,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:34,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:34,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:08:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:34,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:08:34,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:08:34,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:08:34,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921931381] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:08:34,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1933981642] [2023-12-02 13:08:34,878 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-12-02 13:08:34,878 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:08:34,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:08:34,889 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:08:34,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:09:17,562 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 13:09:17,785 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 237 for LOIs [2023-12-02 13:09:18,002 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:10:10,787 WARN L293 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 490 DAG size of output: 490 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:10:24,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1933981642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:10:24,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:10:24,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 13:10:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705561583] [2023-12-02 13:10:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:10:24,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 13:10:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:10:24,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 13:10:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 13:10:24,182 INFO L87 Difference]: Start difference. First operand 229 states and 323 transitions. Second operand has 24 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 13:10:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:37,750 INFO L93 Difference]: Finished difference Result 505 states and 746 transitions. [2023-12-02 13:10:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 13:10:37,750 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 80 [2023-12-02 13:10:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:37,753 INFO L225 Difference]: With dead ends: 505 [2023-12-02 13:10:37,753 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 13:10:37,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 69.3s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-12-02 13:10:37,755 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 87 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:37,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 2927 Invalid, 2451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 13:10:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 13:10:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 252. [2023-12-02 13:10:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 159 states have (on average 1.389937106918239) internal successors, (221), 163 states have internal predecessors, (221), 68 states have call successors, (68), 24 states have call predecessors, (68), 24 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 13:10:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 356 transitions. [2023-12-02 13:10:37,839 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 356 transitions. Word has length 80 [2023-12-02 13:10:37,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:10:37,840 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 356 transitions. [2023-12-02 13:10:37,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 13:10:37,840 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 356 transitions. [2023-12-02 13:10:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 13:10:37,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:10:37,843 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:10:37,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:10:38,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:38,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:10:38,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:10:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 632833939, now seen corresponding path program 1 times [2023-12-02 13:10:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:10:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172329049] [2023-12-02 13:10:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:10:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:10:38,139 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:10:38,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:10:38,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172329049] [2023-12-02 13:10:38,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172329049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:10:38,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:10:38,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:10:38,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319875711] [2023-12-02 13:10:38,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:10:38,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:10:38,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:10:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:10:38,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:10:38,141 INFO L87 Difference]: Start difference. First operand 252 states and 356 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 13:10:38,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:38,358 INFO L93 Difference]: Finished difference Result 607 states and 892 transitions. [2023-12-02 13:10:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:10:38,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 85 [2023-12-02 13:10:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:38,363 INFO L225 Difference]: With dead ends: 607 [2023-12-02 13:10:38,363 INFO L226 Difference]: Without dead ends: 379 [2023-12-02 13:10:38,364 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 13:10:38,365 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 57 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:38,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 411 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:10:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-02 13:10:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 374. [2023-12-02 13:10:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 250 states have (on average 1.444) internal successors, (361), 254 states have internal predecessors, (361), 99 states have call successors, (99), 24 states have call predecessors, (99), 24 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 13:10:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 558 transitions. [2023-12-02 13:10:38,511 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 558 transitions. Word has length 85 [2023-12-02 13:10:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:10:38,512 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 558 transitions. [2023-12-02 13:10:38,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 13:10:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 558 transitions. [2023-12-02 13:10:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 13:10:38,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:10:38,515 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:10:38,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:10:38,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:10:38,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:10:38,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1998287244, now seen corresponding path program 1 times [2023-12-02 13:10:38,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:10:38,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590936181] [2023-12-02 13:10:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:10:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:10:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:10:38,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:10:38,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590936181] [2023-12-02 13:10:38,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590936181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:10:38,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854883745] [2023-12-02 13:10:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:38,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:38,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:10:38,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:10:38,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:10:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:10:38,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:10:38,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:10:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:10:38,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:10:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:10:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854883745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:10:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170565733] [2023-12-02 13:10:39,068 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2023-12-02 13:10:39,068 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:10:39,069 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:10:39,069 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:10:39,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:11:29,112 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 13:11:29,273 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 470 for LOIs [2023-12-02 13:11:31,332 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:11:50,985 WARN L293 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 470 DAG size of output: 471 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:12:00,156 WARN L293 SmtUtils]: Spent 9.00s on a formula simplification. DAG size of input: 500 DAG size of output: 495 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:12:37,405 WARN L293 SmtUtils]: Spent 9.00s on a formula simplification. DAG size of input: 493 DAG size of output: 493 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:12:54,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1170565733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:12:54,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:12:54,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 13:12:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249327996] [2023-12-02 13:12:54,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:12:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 13:12:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:12:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 13:12:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:12:54,296 INFO L87 Difference]: Start difference. First operand 374 states and 558 transitions. Second operand has 28 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 13:13:10,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:10,479 INFO L93 Difference]: Finished difference Result 766 states and 1173 transitions. [2023-12-02 13:13:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 13:13:10,480 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 86 [2023-12-02 13:13:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:10,482 INFO L225 Difference]: With dead ends: 766 [2023-12-02 13:13:10,482 INFO L226 Difference]: Without dead ends: 455 [2023-12-02 13:13:10,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 86.8s TimeCoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 13:13:10,484 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 104 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 3259 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:10,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 3259 Invalid, 2815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-12-02 13:13:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-02 13:13:10,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 388. [2023-12-02 13:13:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 262 states have (on average 1.4427480916030535) internal successors, (378), 266 states have internal predecessors, (378), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-02 13:13:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 577 transitions. [2023-12-02 13:13:10,596 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 577 transitions. Word has length 86 [2023-12-02 13:13:10,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:10,596 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 577 transitions. [2023-12-02 13:13:10,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 13:13:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 577 transitions. [2023-12-02 13:13:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 13:13:10,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:10,599 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:10,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:13:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:10,800 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:13:10,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1116713627, now seen corresponding path program 1 times [2023-12-02 13:13:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:13:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175749008] [2023-12-02 13:13:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:13:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:13:10,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:13:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175749008] [2023-12-02 13:13:10,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175749008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:13:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487611600] [2023-12-02 13:13:10,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:10,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:10,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:13:10,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:13:10,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:13:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:11,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:13:11,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:13:11,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:13:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:13:11,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487611600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:13:11,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1261322598] [2023-12-02 13:13:11,355 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2023-12-02 13:13:11,355 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:13:11,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:13:11,356 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:13:11,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:14:36,124 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 13:14:36,281 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 537 for LOIs [2023-12-02 13:14:38,060 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 220 for LOIs [2023-12-02 13:14:38,222 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 502 for LOIs [2023-12-02 13:14:40,790 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 237 for LOIs [2023-12-02 13:14:41,052 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:15:38,289 WARN L293 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 574 DAG size of output: 569 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:15:54,018 WARN L293 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 559 DAG size of output: 275 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:16:15,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1261322598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:16:15,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:16:15,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [4, 4, 4] total 36 [2023-12-02 13:16:15,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233696568] [2023-12-02 13:16:15,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:16:15,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 13:16:15,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:16:15,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 13:16:15,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 13:16:15,455 INFO L87 Difference]: Start difference. First operand 388 states and 577 transitions. Second operand has 31 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-02 13:16:38,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:16:38,430 INFO L93 Difference]: Finished difference Result 799 states and 1220 transitions. [2023-12-02 13:16:38,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 13:16:38,431 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 89 [2023-12-02 13:16:38,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:16:38,434 INFO L225 Difference]: With dead ends: 799 [2023-12-02 13:16:38,434 INFO L226 Difference]: Without dead ends: 488 [2023-12-02 13:16:38,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 101.9s TimeCoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 13:16:38,437 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 98 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 2952 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:16:38,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 2669 Invalid, 2965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 2952 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-12-02 13:16:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-02 13:16:38,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 424. [2023-12-02 13:16:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 292 states have (on average 1.4383561643835616) internal successors, (420), 296 states have internal predecessors, (420), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-02 13:16:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 625 transitions. [2023-12-02 13:16:38,636 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 625 transitions. Word has length 89 [2023-12-02 13:16:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:16:38,637 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 625 transitions. [2023-12-02 13:16:38,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-02 13:16:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 625 transitions. [2023-12-02 13:16:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 13:16:38,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:16:38,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:16:38,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:16:38,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:16:38,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:16:38,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:16:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1179784866, now seen corresponding path program 1 times [2023-12-02 13:16:38,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:16:38,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947210699] [2023-12-02 13:16:38,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:38,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:16:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:16:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:16:38,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:16:38,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947210699] [2023-12-02 13:16:38,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947210699] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:16:38,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113895577] [2023-12-02 13:16:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:38,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:16:38,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:16:38,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:16:38,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:16:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:16:39,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:16:39,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:16:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:16:39,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:16:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:16:39,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113895577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:16:39,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [724116484] [2023-12-02 13:16:39,385 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2023-12-02 13:16:39,385 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:16:39,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:16:39,386 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:16:39,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:17:40,744 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 13:17:40,908 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 237 for LOIs [2023-12-02 13:17:41,127 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:18:35,091 WARN L293 SmtUtils]: Spent 8.96s on a formula simplification. DAG size of input: 497 DAG size of output: 497 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:19:06,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [724116484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:19:06,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:19:06,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 13:19:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69265921] [2023-12-02 13:19:06,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:19:06,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 13:19:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:19:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 13:19:06,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 13:19:06,965 INFO L87 Difference]: Start difference. First operand 424 states and 625 transitions. Second operand has 32 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 13:19:22,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:22,376 INFO L93 Difference]: Finished difference Result 805 states and 1223 transitions. [2023-12-02 13:19:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 13:19:22,377 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 88 [2023-12-02 13:19:22,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:22,381 INFO L225 Difference]: With dead ends: 805 [2023-12-02 13:19:22,381 INFO L226 Difference]: Without dead ends: 494 [2023-12-02 13:19:22,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 92.7s TimeCoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 13:19:22,383 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 201 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:22,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2284 Invalid, 1997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-12-02 13:19:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-02 13:19:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 444. [2023-12-02 13:19:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 312 states have (on average 1.4423076923076923) internal successors, (450), 316 states have internal predecessors, (450), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-02 13:19:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 655 transitions. [2023-12-02 13:19:22,532 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 655 transitions. Word has length 88 [2023-12-02 13:19:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:22,533 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 655 transitions. [2023-12-02 13:19:22,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 13:19:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 655 transitions. [2023-12-02 13:19:22,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 13:19:22,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:22,535 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:19:22,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:19:22,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 13:19:22,735 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:19:22,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:22,736 INFO L85 PathProgramCache]: Analyzing trace with hash -956281973, now seen corresponding path program 1 times [2023-12-02 13:19:22,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:19:22,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96088875] [2023-12-02 13:19:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:22,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:19:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-02 13:19:23,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:19:23,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96088875] [2023-12-02 13:19:23,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96088875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:19:23,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:19:23,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-02 13:19:23,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679516315] [2023-12-02 13:19:23,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:19:23,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 13:19:23,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:19:23,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 13:19:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-12-02 13:19:23,877 INFO L87 Difference]: Start difference. First operand 444 states and 655 transitions. Second operand has 20 states, 15 states have (on average 3.066666666666667) internal successors, (46), 16 states have internal predecessors, (46), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 13:19:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:25,548 INFO L93 Difference]: Finished difference Result 572 states and 829 transitions. [2023-12-02 13:19:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 13:19:25,549 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 3.066666666666667) internal successors, (46), 16 states have internal predecessors, (46), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 91 [2023-12-02 13:19:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:25,553 INFO L225 Difference]: With dead ends: 572 [2023-12-02 13:19:25,553 INFO L226 Difference]: Without dead ends: 568 [2023-12-02 13:19:25,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 13:19:25,555 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 311 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:25,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 2516 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 13:19:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-12-02 13:19:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 560. [2023-12-02 13:19:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 377 states have (on average 1.4005305039787799) internal successors, (528), 384 states have internal predecessors, (528), 140 states have call successors, (140), 42 states have call predecessors, (140), 42 states have return successors, (141), 135 states have call predecessors, (141), 135 states have call successors, (141) [2023-12-02 13:19:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 809 transitions. [2023-12-02 13:19:25,736 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 809 transitions. Word has length 91 [2023-12-02 13:19:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:25,736 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 809 transitions. [2023-12-02 13:19:25,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 3.066666666666667) internal successors, (46), 16 states have internal predecessors, (46), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 13:19:25,737 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 809 transitions. [2023-12-02 13:19:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 13:19:25,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:25,739 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:19:25,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 13:19:25,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:19:25,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:25,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1149059580, now seen corresponding path program 1 times [2023-12-02 13:19:25,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:19:25,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354208797] [2023-12-02 13:19:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:25,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:19:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:19:25,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:19:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354208797] [2023-12-02 13:19:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354208797] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:19:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722896566] [2023-12-02 13:19:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:25,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:19:25,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:19:25,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:19:25,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:19:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:26,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:19:26,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:19:26,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:19:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 13:19:26,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722896566] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:19:26,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [685189165] [2023-12-02 13:19:26,257 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2023-12-02 13:19:26,257 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:19:26,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:19:26,258 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:19:26,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:20:24,324 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 13:20:24,505 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 472 for LOIs [2023-12-02 13:20:26,818 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:20:49,047 WARN L293 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 472 DAG size of output: 472 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:20:58,657 WARN L293 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 502 DAG size of output: 498 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:21:45,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [685189165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:21:45,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:21:45,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 5, 5] total 33 [2023-12-02 13:21:45,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956584406] [2023-12-02 13:21:45,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:21:45,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 13:21:45,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:21:45,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 13:21:45,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:21:45,168 INFO L87 Difference]: Start difference. First operand 560 states and 809 transitions. Second operand has 28 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-02 13:21:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:21:58,910 INFO L93 Difference]: Finished difference Result 1112 states and 1655 transitions. [2023-12-02 13:21:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 13:21:58,911 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 97 [2023-12-02 13:21:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:21:58,915 INFO L225 Difference]: With dead ends: 1112 [2023-12-02 13:21:58,915 INFO L226 Difference]: Without dead ends: 685 [2023-12-02 13:21:58,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 261 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 79.6s TimeCoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 13:21:58,918 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 164 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:21:58,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2636 Invalid, 2402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-12-02 13:21:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-02 13:21:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 578. [2023-12-02 13:21:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 392 states have (on average 1.4005102040816326) internal successors, (549), 399 states have internal predecessors, (549), 142 states have call successors, (142), 43 states have call predecessors, (142), 43 states have return successors, (143), 137 states have call predecessors, (143), 137 states have call successors, (143) [2023-12-02 13:21:59,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 834 transitions. [2023-12-02 13:21:59,226 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 834 transitions. Word has length 97 [2023-12-02 13:21:59,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:21:59,226 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 834 transitions. [2023-12-02 13:21:59,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-02 13:21:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 834 transitions. [2023-12-02 13:21:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-02 13:21:59,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:21:59,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:21:59,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:21:59,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 13:21:59,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:21:59,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:21:59,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2063446912, now seen corresponding path program 1 times [2023-12-02 13:21:59,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:21:59,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575938606] [2023-12-02 13:21:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:21:59,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:21:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:21:59,963 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 13:21:59,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:21:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575938606] [2023-12-02 13:21:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575938606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:21:59,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:21:59,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 13:21:59,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374482013] [2023-12-02 13:21:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:21:59,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:21:59,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:21:59,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:21:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:21:59,966 INFO L87 Difference]: Start difference. First operand 578 states and 834 transitions. Second operand has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-02 13:22:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:00,937 INFO L93 Difference]: Finished difference Result 1173 states and 1661 transitions. [2023-12-02 13:22:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 13:22:00,938 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 111 [2023-12-02 13:22:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:00,945 INFO L225 Difference]: With dead ends: 1173 [2023-12-02 13:22:00,945 INFO L226 Difference]: Without dead ends: 980 [2023-12-02 13:22:00,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-02 13:22:00,947 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 321 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:00,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1267 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:22:00,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-12-02 13:22:01,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 969. [2023-12-02 13:22:01,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 638 states have (on average 1.4075235109717867) internal successors, (898), 651 states have internal predecessors, (898), 253 states have call successors, (253), 77 states have call predecessors, (253), 77 states have return successors, (252), 244 states have call predecessors, (252), 242 states have call successors, (252) [2023-12-02 13:22:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1403 transitions. [2023-12-02 13:22:01,301 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1403 transitions. Word has length 111 [2023-12-02 13:22:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:01,301 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1403 transitions. [2023-12-02 13:22:01,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-12-02 13:22:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1403 transitions. [2023-12-02 13:22:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-02 13:22:01,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:01,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:01,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 13:22:01,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:22:01,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1939454272, now seen corresponding path program 1 times [2023-12-02 13:22:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:01,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145058980] [2023-12-02 13:22:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:22:01,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145058980] [2023-12-02 13:22:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145058980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:22:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499941627] [2023-12-02 13:22:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:01,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:22:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:01,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:22:01,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6983b8a-2977-409b-aa13-649a06d05f2c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:22:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:01,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:22:01,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:22:01,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:22:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 13:22:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499941627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:22:01,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2073063838] [2023-12-02 13:22:01,921 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2023-12-02 13:22:01,922 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:22:01,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:22:01,922 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:22:01,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs