./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product33.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_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/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_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/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_0d933e96-e8fc-4970-8187-83f30b0fc40e/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 f1bf577a04d9efa22571cde3b0a4348a8cf7d4cfe89b0abb5b80fa76df1bbd4f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:04:15,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:04:15,891 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:04:15,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:04:15,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:04:15,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:04:15,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:04:15,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:04:15,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:04:15,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:04:15,932 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:04:15,933 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:04:15,933 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:04:15,953 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:04:15,953 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:04:15,954 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:04:15,954 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:04:15,955 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:04:15,955 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:04:15,956 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:04:15,956 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:04:15,957 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:04:15,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:04:15,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:04:15,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:04:15,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:04:15,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:04:15,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:04:15,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:04:15,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:04:15,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:04:15,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:04:15,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:04:15,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:04:15,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:04:15,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:04:15,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:04:15,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:04:15,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:04:15,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:04:15,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:04:15,964 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:04:15,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:04:15,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:04:15,964 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:04:15,964 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:04:15,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:04:15,965 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_0d933e96-e8fc-4970-8187-83f30b0fc40e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1bf577a04d9efa22571cde3b0a4348a8cf7d4cfe89b0abb5b80fa76df1bbd4f [2023-12-02 15:04:16,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:04:16,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:04:16,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:04:16,206 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:04:16,206 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:04:16,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec7_product33.cil.c [2023-12-02 15:04:18,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:04:19,161 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:04:19,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c [2023-12-02 15:04:19,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/data/359d507c1/abbdc6e609bd4036b3fe18c179361126/FLAG76e51ffda [2023-12-02 15:04:19,200 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/data/359d507c1/abbdc6e609bd4036b3fe18c179361126 [2023-12-02 15:04:19,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:04:19,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:04:19,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:04:19,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:04:19,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:04:19,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f623b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19, skipping insertion in model container [2023-12-02 15:04:19,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,277 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:04:19,576 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_0d933e96-e8fc-4970-8187-83f30b0fc40e/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c[20852,20865] [2023-12-02 15:04:19,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:19,720 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:04:19,730 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-12-02 15:04:19,732 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [208] [2023-12-02 15:04:19,732 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [574] [2023-12-02 15:04:19,732 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [593] [2023-12-02 15:04:19,732 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [908] [2023-12-02 15:04:19,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [943] [2023-12-02 15:04:19,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [952] [2023-12-02 15:04:19,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2023] [2023-12-02 15:04:19,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2242] [2023-12-02 15:04:19,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2633] [2023-12-02 15:04:19,734 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [3030] [2023-12-02 15:04:19,767 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_0d933e96-e8fc-4970-8187-83f30b0fc40e/sv-benchmarks/c/product-lines/email_spec7_product33.cil.c[20852,20865] [2023-12-02 15:04:19,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:04:19,840 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:04:19,848 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:04:19,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19 WrapperNode [2023-12-02 15:04:19,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:04:19,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:04:19,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:04:19,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:04:19,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,932 INFO L138 Inliner]: procedures = 134, calls = 225, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1079 [2023-12-02 15:04:19,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:04:19,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:04:19,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:04:19,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:04:19,941 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:19,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:20,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:04:20,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:04:20,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:04:20,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:04:20,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (1/1) ... [2023-12-02 15:04:20,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:04:20,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:04:20,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:04:20,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:04:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 15:04:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 15:04:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 15:04:20,120 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 15:04:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 15:04:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 15:04:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 15:04:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 15:04:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 15:04:20,121 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 15:04:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 15:04:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 15:04:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 15:04:20,123 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 15:04:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 15:04:20,125 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 15:04:20,125 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 15:04:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 15:04:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 15:04:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 15:04:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 15:04:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 15:04:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 15:04:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-02 15:04:20,126 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-02 15:04:20,126 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 15:04:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 15:04:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:04:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 15:04:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 15:04:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 15:04:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 15:04:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 15:04:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 15:04:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 15:04:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 15:04:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 15:04:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 15:04:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 15:04:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 15:04:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 15:04:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 15:04:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 15:04:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 15:04:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 15:04:20,129 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 15:04:20,129 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 15:04:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 15:04:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:04:20,130 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 15:04:20,130 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 15:04:20,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:04:20,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:04:20,348 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:04:20,351 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:04:21,019 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:04:21,519 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:04:21,519 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:04:21,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:04:21 BoogieIcfgContainer [2023-12-02 15:04:21,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:04:21,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:04:21,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:04:21,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:04:21,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:04:19" (1/3) ... [2023-12-02 15:04:21,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb1bfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:04:21, skipping insertion in model container [2023-12-02 15:04:21,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:04:19" (2/3) ... [2023-12-02 15:04:21,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb1bfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:04:21, skipping insertion in model container [2023-12-02 15:04:21,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:04:21" (3/3) ... [2023-12-02 15:04:21,530 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product33.cil.c [2023-12-02 15:04:21,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:04:21,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:04:21,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:04:21,613 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;@792f9929, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:04:21,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:04:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 15:04:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 15:04:21,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:21,634 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] [2023-12-02 15:04:21,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:04:21,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash -643557059, now seen corresponding path program 1 times [2023-12-02 15:04:21,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:04:21,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021959466] [2023-12-02 15:04:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:21,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:04:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:04:21,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:04:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021959466] [2023-12-02 15:04:21,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021959466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:21,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:21,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:04:21,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044595475] [2023-12-02 15:04:21,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:21,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:04:21,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:04:22,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:04:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:04:22,028 INFO L87 Difference]: Start difference. First operand has 209 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 125 states have internal predecessors, (158), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 15:04:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:22,164 INFO L93 Difference]: Finished difference Result 335 states and 442 transitions. [2023-12-02 15:04:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:04:22,167 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2023-12-02 15:04:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:22,179 INFO L225 Difference]: With dead ends: 335 [2023-12-02 15:04:22,179 INFO L226 Difference]: Without dead ends: 206 [2023-12-02 15:04:22,184 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 15:04:22,187 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:22,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:04:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-02 15:04:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-12-02 15:04:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 122 states have internal predecessors, (152), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-02 15:04:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2023-12-02 15:04:22,248 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 275 transitions. Word has length 77 [2023-12-02 15:04:22,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:22,249 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 275 transitions. [2023-12-02 15:04:22,250 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 15:04:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 275 transitions. [2023-12-02 15:04:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 15:04:22,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:22,254 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] [2023-12-02 15:04:22,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:04:22,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:04:22,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash 986877763, now seen corresponding path program 1 times [2023-12-02 15:04:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:04:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021755869] [2023-12-02 15:04:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:22,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:04:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:04:22,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:04:22,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021755869] [2023-12-02 15:04:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021755869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:22,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:04:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080639926] [2023-12-02 15:04:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:22,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:04:22,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:04:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:04:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:04:22,471 INFO L87 Difference]: Start difference. First operand 206 states and 275 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 15:04:22,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:22,584 INFO L93 Difference]: Finished difference Result 331 states and 430 transitions. [2023-12-02 15:04:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:04:22,584 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2023-12-02 15:04:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:22,588 INFO L225 Difference]: With dead ends: 331 [2023-12-02 15:04:22,588 INFO L226 Difference]: Without dead ends: 208 [2023-12-02 15:04:22,589 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 15:04:22,590 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:22,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:04:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-02 15:04:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-12-02 15:04:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 124 states have internal predecessors, (154), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-02 15:04:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 277 transitions. [2023-12-02 15:04:22,614 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 277 transitions. Word has length 78 [2023-12-02 15:04:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:22,615 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 277 transitions. [2023-12-02 15:04:22,615 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 15:04:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 277 transitions. [2023-12-02 15:04:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 15:04:22,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:22,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:22,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:04:22,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:04:22,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1015937771, now seen corresponding path program 1 times [2023-12-02 15:04:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:04:22,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768581104] [2023-12-02 15:04:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:04:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:04:22,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:04:22,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768581104] [2023-12-02 15:04:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768581104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:22,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:22,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:04:22,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133604270] [2023-12-02 15:04:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:22,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:04:22,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:04:22,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:04:22,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:04:22,763 INFO L87 Difference]: Start difference. First operand 208 states and 277 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 15:04:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:22,878 INFO L93 Difference]: Finished difference Result 446 states and 613 transitions. [2023-12-02 15:04:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:04:22,879 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2023-12-02 15:04:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:22,881 INFO L225 Difference]: With dead ends: 446 [2023-12-02 15:04:22,881 INFO L226 Difference]: Without dead ends: 256 [2023-12-02 15:04:22,882 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 15:04:22,884 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 57 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:22,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 474 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:04:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-02 15:04:22,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2023-12-02 15:04:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 156 states have internal predecessors, (207), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 15:04:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2023-12-02 15:04:22,909 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 83 [2023-12-02 15:04:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:22,910 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2023-12-02 15:04:22,910 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 15:04:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2023-12-02 15:04:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 15:04:22,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:22,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:22,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:04:22,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:04:22,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:22,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1201496258, now seen corresponding path program 1 times [2023-12-02 15:04:22,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:04:22,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722514340] [2023-12-02 15:04:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:22,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:04:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:04:23,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:04:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722514340] [2023-12-02 15:04:23,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722514340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:04:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492895236] [2023-12-02 15:04:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:23,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:04:23,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:04:23,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:04:23,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:04:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:23,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:04:23,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:04:23,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:04:23,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:04:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492895236] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:04:23,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1915132663] [2023-12-02 15:04:23,606 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 15:04:23,606 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:04:23,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:04:23,614 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:04:23,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:05:03,685 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 15:05:03,919 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 15:05:04,090 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:05:57,801 WARN L293 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 495 DAG size of output: 495 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:06:12,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1915132663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:12,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:06:12,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 15:06:12,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624380928] [2023-12-02 15:06:12,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:12,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 15:06:12,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:06:12,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 15:06:12,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-02 15:06:12,269 INFO L87 Difference]: Start difference. First operand 251 states and 352 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-02 15:06:26,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:26,475 INFO L93 Difference]: Finished difference Result 547 states and 800 transitions. [2023-12-02 15:06:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 15:06:26,476 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 84 [2023-12-02 15:06:26,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:26,479 INFO L225 Difference]: With dead ends: 547 [2023-12-02 15:06:26,479 INFO L226 Difference]: Without dead ends: 314 [2023-12-02 15:06:26,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 71.1s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-12-02 15:06:26,482 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 109 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:26,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 3486 Invalid, 2544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-12-02 15:06:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-02 15:06:26,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 274. [2023-12-02 15:06:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 175 states have (on average 1.3714285714285714) internal successors, (240), 178 states have internal predecessors, (240), 73 states have call successors, (73), 25 states have call predecessors, (73), 25 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 15:06:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 385 transitions. [2023-12-02 15:06:26,545 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 385 transitions. Word has length 84 [2023-12-02 15:06:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:26,545 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 385 transitions. [2023-12-02 15:06:26,546 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-02 15:06:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 385 transitions. [2023-12-02 15:06:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 15:06:26,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:26,548 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:26,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:06:26,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:26,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:26,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash 741538106, now seen corresponding path program 1 times [2023-12-02 15:06:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:26,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573461680] [2023-12-02 15:06:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:26,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:06:26,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573461680] [2023-12-02 15:06:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573461680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:06:26,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:06:26,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:06:26,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496396653] [2023-12-02 15:06:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:06:26,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:06:26,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:06:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:06:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:06:26,840 INFO L87 Difference]: Start difference. First operand 274 states and 385 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:06:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:27,023 INFO L93 Difference]: Finished difference Result 641 states and 934 transitions. [2023-12-02 15:06:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:06:27,024 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2023-12-02 15:06:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:27,027 INFO L225 Difference]: With dead ends: 641 [2023-12-02 15:06:27,027 INFO L226 Difference]: Without dead ends: 391 [2023-12-02 15:06:27,028 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 15:06:27,029 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 55 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:27,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:06:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-02 15:06:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 386. [2023-12-02 15:06:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 262 states have (on average 1.4351145038167938) internal successors, (376), 265 states have internal predecessors, (376), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-02 15:06:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 571 transitions. [2023-12-02 15:06:27,126 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 571 transitions. Word has length 89 [2023-12-02 15:06:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:27,127 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 571 transitions. [2023-12-02 15:06:27,127 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:06:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 571 transitions. [2023-12-02 15:06:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 15:06:27,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:27,130 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:06:27,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:06:27,130 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:06:27,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash 28709094, now seen corresponding path program 1 times [2023-12-02 15:06:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:27,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586718660] [2023-12-02 15:06:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:27,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:06:27,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586718660] [2023-12-02 15:06:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586718660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:06:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286158327] [2023-12-02 15:06:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:27,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:27,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:27,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:06:27,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:06:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:06:27,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:06:27,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:06:27,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:06:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:06:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286158327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:06:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [904563120] [2023-12-02 15:06:27,660 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 15:06:27,660 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:06:27,661 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:06:27,661 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:06:27,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:07:25,166 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 15:07:25,416 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 475 for LOIs [2023-12-02 15:07:27,504 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:07:47,632 WARN L293 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 475 DAG size of output: 475 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:07:56,879 WARN L293 SmtUtils]: Spent 9.07s on a formula simplification. DAG size of input: 505 DAG size of output: 500 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:08:34,688 WARN L293 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 498 DAG size of output: 498 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:09:03,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [904563120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:09:03,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:09:03,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 15:09:03,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487970663] [2023-12-02 15:09:03,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:09:03,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 15:09:03,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:09:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 15:09:03,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:09:03,822 INFO L87 Difference]: Start difference. First operand 386 states and 571 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-02 15:09:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:09:21,179 INFO L93 Difference]: Finished difference Result 788 states and 1195 transitions. [2023-12-02 15:09:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 15:09:21,179 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 90 [2023-12-02 15:09:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:09:21,183 INFO L225 Difference]: With dead ends: 788 [2023-12-02 15:09:21,184 INFO L226 Difference]: Without dead ends: 465 [2023-12-02 15:09:21,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 99.5s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 15:09:21,186 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 73 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 3387 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:09:21,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 3387 Invalid, 2787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-12-02 15:09:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-02 15:09:21,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 400. [2023-12-02 15:09:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 274 states have (on average 1.4343065693430657) internal successors, (393), 277 states have internal predecessors, (393), 99 states have call successors, (99), 26 states have call predecessors, (99), 26 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 15:09:21,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 590 transitions. [2023-12-02 15:09:21,296 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 590 transitions. Word has length 90 [2023-12-02 15:09:21,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:09:21,297 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 590 transitions. [2023-12-02 15:09:21,297 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, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-02 15:09:21,297 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 590 transitions. [2023-12-02 15:09:21,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 15:09:21,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:09:21,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:09:21,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:09:21,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:09:21,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:09:21,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:09:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1886188433, now seen corresponding path program 1 times [2023-12-02 15:09:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:09:21,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173674716] [2023-12-02 15:09:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:21,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:09:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:09:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:09:21,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:09:21,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173674716] [2023-12-02 15:09:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173674716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:09:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057338935] [2023-12-02 15:09:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:21,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:09:21,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:09:21,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:09:21,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:09:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:09:21,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:09:22,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:09:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:09:22,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:09:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:09:22,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057338935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:09:22,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1048871363] [2023-12-02 15:09:22,092 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2023-12-02 15:09:22,093 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:09:22,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:09:22,094 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:09:22,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:11:15,856 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 15:11:16,077 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 542 for LOIs [2023-12-02 15:11:17,872 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 551 for LOIs [2023-12-02 15:11:19,615 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 466 for LOIs [2023-12-02 15:11:20,364 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 15:11:20,525 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:12:16,175 WARN L293 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 579 DAG size of output: 574 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:12:22,244 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 573 DAG size of output: 564 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:13:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1048871363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:13:10,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:13:10,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 15:13:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12597722] [2023-12-02 15:13:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:13:10,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 15:13:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:13:10,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 15:13:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:13:10,261 INFO L87 Difference]: Start difference. First operand 400 states and 590 transitions. Second operand has 33 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-02 15:13:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:13:38,558 INFO L93 Difference]: Finished difference Result 813 states and 1230 transitions. [2023-12-02 15:13:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 15:13:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 93 [2023-12-02 15:13:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:13:38,562 INFO L225 Difference]: With dead ends: 813 [2023-12-02 15:13:38,562 INFO L226 Difference]: Without dead ends: 490 [2023-12-02 15:13:38,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 113.1s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 15:13:38,565 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 58 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 4067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:13:38,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4127 Invalid, 4067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 24.5s Time] [2023-12-02 15:13:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-02 15:13:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 436. [2023-12-02 15:13:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 304 states have (on average 1.430921052631579) internal successors, (435), 307 states have internal predecessors, (435), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-02 15:13:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 638 transitions. [2023-12-02 15:13:38,733 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 638 transitions. Word has length 93 [2023-12-02 15:13:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:13:38,734 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 638 transitions. [2023-12-02 15:13:38,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-02 15:13:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 638 transitions. [2023-12-02 15:13:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 15:13:38,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:13:38,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:13:38,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:13:38,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:13:38,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:13:38,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:13:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -98919178, now seen corresponding path program 1 times [2023-12-02 15:13:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:13:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640136943] [2023-12-02 15:13:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:13:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:13:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:13:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:13:39,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:13:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640136943] [2023-12-02 15:13:39,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640136943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:13:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316783997] [2023-12-02 15:13:39,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:13:39,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:13:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:13:39,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:13:39,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:13:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:13:39,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:13:39,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:13:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:13:39,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:13:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:13:39,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316783997] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:13:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [471150190] [2023-12-02 15:13:39,423 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2023-12-02 15:13:39,423 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:13:39,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:13:39,423 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:13:39,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:14:35,331 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 15:14:35,546 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 15:14:35,710 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:15:29,241 WARN L293 SmtUtils]: Spent 9.07s on a formula simplification. DAG size of input: 503 DAG size of output: 503 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:16:13,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [471150190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:16:13,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:16:13,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 15:16:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337536111] [2023-12-02 15:16:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:16:13,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 15:16:13,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:16:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 15:16:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:16:13,084 INFO L87 Difference]: Start difference. First operand 436 states and 638 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-02 15:16:29,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:16:29,900 INFO L93 Difference]: Finished difference Result 827 states and 1245 transitions. [2023-12-02 15:16:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 15:16:29,901 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 92 [2023-12-02 15:16:29,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:16:29,905 INFO L225 Difference]: With dead ends: 827 [2023-12-02 15:16:29,905 INFO L226 Difference]: Without dead ends: 504 [2023-12-02 15:16:29,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 100.5s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:16:29,907 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 84 mSDsluCounter, 3947 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 3167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:16:29,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 4161 Invalid, 3167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 3158 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-12-02 15:16:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-02 15:16:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 456. [2023-12-02 15:16:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 324 states have (on average 1.4351851851851851) internal successors, (465), 327 states have internal predecessors, (465), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-12-02 15:16:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 668 transitions. [2023-12-02 15:16:30,089 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 668 transitions. Word has length 92 [2023-12-02 15:16:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:16:30,090 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 668 transitions. [2023-12-02 15:16:30,090 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, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-02 15:16:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 668 transitions. [2023-12-02 15:16:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 15:16:30,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:16:30,091 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:16:30,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:16:30,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:16:30,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:16:30,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:16:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2004832673, now seen corresponding path program 1 times [2023-12-02 15:16:30,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:16:30,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142508025] [2023-12-02 15:16:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:16:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:16:30,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:16:30,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142508025] [2023-12-02 15:16:30,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142508025] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:16:30,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001843295] [2023-12-02 15:16:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:16:30,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:16:30,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:16:30,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:16:30,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d933e96-e8fc-4970-8187-83f30b0fc40e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:16:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:16:30,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:16:30,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:16:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:16:30,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:16:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:16:30,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001843295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:16:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1568993275] [2023-12-02 15:16:30,807 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 15:16:30,808 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:16:30,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:16:30,808 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:16:30,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:17:24,175 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 15:17:24,398 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 477 for LOIs [2023-12-02 15:17:26,917 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2023-12-02 15:17:30,919 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 224 for LOIs [2023-12-02 15:17:31,054 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2023-12-02 15:17:51,074 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 258 for LOIs [2023-12-02 15:17:52,878 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 258 for LOIs [2023-12-02 15:17:53,103 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 263 for LOIs [2023-12-02 15:17:54,026 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 236 for LOIs [2023-12-02 15:17:54,246 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2023-12-02 15:17:54,382 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 228 for LOIs [2023-12-02 15:17:54,510 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:18:17,468 WARN L293 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 477 DAG size of output: 477 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:18:26,786 WARN L293 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 507 DAG size of output: 503 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)