./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/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_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/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_70d985c1-35eb-4860-8120-eb3ee21e8f5c/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 cc83a32f8f5c6143265231752530a7f576faa355052cdad9509cfbce0d0adeb3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:32:39,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:32:39,369 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:32:39,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:32:39,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:32:39,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:32:39,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:32:39,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:32:39,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:32:39,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:32:39,410 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:32:39,411 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:32:39,411 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:32:39,412 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:32:39,412 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:32:39,413 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:32:39,413 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:32:39,414 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:32:39,414 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:32:39,415 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:32:39,415 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:32:39,416 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:32:39,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:32:39,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:32:39,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:32:39,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:32:39,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:32:39,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:32:39,430 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:32:39,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:32:39,431 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:32:39,431 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:32:39,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:32:39,432 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:32:39,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:32:39,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:32:39,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:32:39,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:32:39,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:32:39,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:32:39,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:32:39,435 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:32:39,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:32:39,435 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:32:39,436 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:32:39,436 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:32:39,436 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:32:39,436 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_70d985c1-35eb-4860-8120-eb3ee21e8f5c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc83a32f8f5c6143265231752530a7f576faa355052cdad9509cfbce0d0adeb3 [2023-12-02 16:32:39,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:32:39,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:32:39,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:32:39,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:32:39,742 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:32:39,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec4_product24.cil.c [2023-12-02 16:32:42,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:32:42,967 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:32:42,968 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/sv-benchmarks/c/product-lines/email_spec4_product24.cil.c [2023-12-02 16:32:42,992 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/data/be403f42b/2bf9d5f94d554f6392a43f3a4b3dc3f2/FLAG7e147d9e6 [2023-12-02 16:32:43,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/data/be403f42b/2bf9d5f94d554f6392a43f3a4b3dc3f2 [2023-12-02 16:32:43,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:32:43,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:32:43,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:32:43,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:32:43,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:32:43,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e30f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43, skipping insertion in model container [2023-12-02 16:32:43,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:32:43,480 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_70d985c1-35eb-4860-8120-eb3ee21e8f5c/sv-benchmarks/c/product-lines/email_spec4_product24.cil.c[33676,33689] [2023-12-02 16:32:43,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:32:43,691 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:32:43,700 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-12-02 16:32:43,702 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [277] [2023-12-02 16:32:43,702 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1357] [2023-12-02 16:32:43,702 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1375] [2023-12-02 16:32:43,702 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1424] [2023-12-02 16:32:43,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1433] [2023-12-02 16:32:43,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1799] [2023-12-02 16:32:43,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2211] [2023-12-02 16:32:43,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [2503] [2023-12-02 16:32:43,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2530] [2023-12-02 16:32:43,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2629] [2023-12-02 16:32:43,750 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_70d985c1-35eb-4860-8120-eb3ee21e8f5c/sv-benchmarks/c/product-lines/email_spec4_product24.cil.c[33676,33689] [2023-12-02 16:32:43,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:32:43,827 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:32:43,833 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:32:43,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43 WrapperNode [2023-12-02 16:32:43,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:32:43,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:32:43,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:32:43,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:32:43,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,924 INFO L138 Inliner]: procedures = 130, calls = 209, calls flagged for inlining = 63, calls inlined = 58, statements flattened = 1058 [2023-12-02 16:32:43,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:32:43,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:32:43,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:32:43,926 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:32:43,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:43,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:44,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:44,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:32:44,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:32:44,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:32:44,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:32:44,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (1/1) ... [2023-12-02 16:32:44,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:32:44,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:32:44,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:32:44,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:32:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 16:32:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 16:32:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 16:32:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 16:32:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 16:32:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 16:32:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 16:32:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 16:32:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 16:32:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 16:32:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 16:32:44,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 16:32:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 16:32:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 16:32:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 16:32:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 16:32:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 16:32:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-02 16:32:44,105 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-02 16:32:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 16:32:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 16:32:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:32:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 16:32:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 16:32:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 16:32:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 16:32:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 16:32:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 16:32:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 16:32:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 16:32:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 16:32:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 16:32:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 16:32:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 16:32:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 16:32:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 16:32:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:32:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 16:32:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 16:32:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:32:44,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:32:44,318 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:32:44,321 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:32:45,052 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:32:45,615 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:32:45,615 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:32:45,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:32:45 BoogieIcfgContainer [2023-12-02 16:32:45,617 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:32:45,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:32:45,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:32:45,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:32:45,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:32:43" (1/3) ... [2023-12-02 16:32:45,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739d0595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:32:45, skipping insertion in model container [2023-12-02 16:32:45,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:32:43" (2/3) ... [2023-12-02 16:32:45,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739d0595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:32:45, skipping insertion in model container [2023-12-02 16:32:45,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:32:45" (3/3) ... [2023-12-02 16:32:45,627 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product24.cil.c [2023-12-02 16:32:45,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:32:45,649 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:32:45,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:32:45,719 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;@3d7d727f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:32:45,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:32:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 100 states have (on average 1.34) internal successors, (134), 102 states have internal predecessors, (134), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 16:32:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 16:32:45,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:32:45,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:32:45,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:32:45,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:32:45,749 INFO L85 PathProgramCache]: Analyzing trace with hash -904976735, now seen corresponding path program 1 times [2023-12-02 16:32:45,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:32:45,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105145114] [2023-12-02 16:32:45,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:45,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:32:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:46,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:32:46,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:32:46,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105145114] [2023-12-02 16:32:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105145114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:32:46,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:32:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:32:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069720317] [2023-12-02 16:32:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:32:46,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:32:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:32:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:32:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:32:46,156 INFO L87 Difference]: Start difference. First operand has 168 states, 100 states have (on average 1.34) internal successors, (134), 102 states have internal predecessors, (134), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:32:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:32:46,294 INFO L93 Difference]: Finished difference Result 253 states and 338 transitions. [2023-12-02 16:32:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:32:46,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 58 [2023-12-02 16:32:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:32:46,309 INFO L225 Difference]: With dead ends: 253 [2023-12-02 16:32:46,309 INFO L226 Difference]: Without dead ends: 165 [2023-12-02 16:32:46,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:32:46,319 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:32:46,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 194 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:32:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-02 16:32:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-02 16:32:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 99 states have internal predecessors, (128), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-02 16:32:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 223 transitions. [2023-12-02 16:32:46,383 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 223 transitions. Word has length 58 [2023-12-02 16:32:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:32:46,384 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 223 transitions. [2023-12-02 16:32:46,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:32:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 223 transitions. [2023-12-02 16:32:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 16:32:46,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:32:46,389 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:32:46,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:32:46,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:32:46,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:32:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1890012029, now seen corresponding path program 1 times [2023-12-02 16:32:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:32:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707475481] [2023-12-02 16:32:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:32:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:32:46,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:32:46,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707475481] [2023-12-02 16:32:46,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707475481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:32:46,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:32:46,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:32:46,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016222828] [2023-12-02 16:32:46,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:32:46,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:32:46,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:32:46,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:32:46,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:32:46,620 INFO L87 Difference]: Start difference. First operand 165 states and 223 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:32:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:32:46,745 INFO L93 Difference]: Finished difference Result 249 states and 326 transitions. [2023-12-02 16:32:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:32:46,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2023-12-02 16:32:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:32:46,749 INFO L225 Difference]: With dead ends: 249 [2023-12-02 16:32:46,749 INFO L226 Difference]: Without dead ends: 167 [2023-12-02 16:32:46,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:32:46,753 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:32:46,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:32:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-02 16:32:46,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-12-02 16:32:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 100 states have (on average 1.3) internal successors, (130), 101 states have internal predecessors, (130), 48 states have call successors, (48), 18 states have call predecessors, (48), 18 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-02 16:32:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2023-12-02 16:32:46,779 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 59 [2023-12-02 16:32:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:32:46,780 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2023-12-02 16:32:46,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:32:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2023-12-02 16:32:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 16:32:46,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:32:46,784 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] [2023-12-02 16:32:46,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:32:46,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:32:46,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:32:46,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2134551748, now seen corresponding path program 1 times [2023-12-02 16:32:46,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:32:46,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627534654] [2023-12-02 16:32:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:46,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:32:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:32:46,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:32:46,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627534654] [2023-12-02 16:32:46,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627534654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:32:46,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:32:46,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:32:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523113531] [2023-12-02 16:32:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:32:46,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:32:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:32:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:32:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:32:46,930 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:32:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:32:47,049 INFO L93 Difference]: Finished difference Result 364 states and 509 transitions. [2023-12-02 16:32:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:32:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2023-12-02 16:32:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:32:47,053 INFO L225 Difference]: With dead ends: 364 [2023-12-02 16:32:47,054 INFO L226 Difference]: Without dead ends: 215 [2023-12-02 16:32:47,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:32:47,057 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 57 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:32:47,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 378 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:32:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-02 16:32:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 210. [2023-12-02 16:32:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 133 states have internal predecessors, (183), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 16:32:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 300 transitions. [2023-12-02 16:32:47,084 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 300 transitions. Word has length 64 [2023-12-02 16:32:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:32:47,085 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 300 transitions. [2023-12-02 16:32:47,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 16:32:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 300 transitions. [2023-12-02 16:32:47,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 16:32:47,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:32:47,089 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] [2023-12-02 16:32:47,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:32:47,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:32:47,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:32:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash -135982886, now seen corresponding path program 1 times [2023-12-02 16:32:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:32:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288102808] [2023-12-02 16:32:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:32:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:32:47,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:32:47,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288102808] [2023-12-02 16:32:47,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288102808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:32:47,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674261405] [2023-12-02 16:32:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:32:47,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:32:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:32:47,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:32:47,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:32:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:32:47,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:32:47,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:32:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:32:47,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:32:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:32:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674261405] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:32:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1154915568] [2023-12-02 16:32:47,803 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2023-12-02 16:32:47,804 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:32:47,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:32:47,814 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:32:47,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:33:33,531 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 16:33:33,710 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 16:33:33,882 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:34:32,104 WARN L293 SmtUtils]: Spent 9.50s on a formula simplification. DAG size of input: 490 DAG size of output: 490 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:34:47,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1154915568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:34:47,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:34:47,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 16:34:47,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561252375] [2023-12-02 16:34:47,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:34:47,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 16:34:47,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:34:47,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 16:34:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:34:47,144 INFO L87 Difference]: Start difference. First operand 210 states and 300 transitions. Second operand has 24 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 16:34:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:34:57,517 INFO L93 Difference]: Finished difference Result 465 states and 696 transitions. [2023-12-02 16:34:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 16:34:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 65 [2023-12-02 16:34:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:34:57,522 INFO L225 Difference]: With dead ends: 465 [2023-12-02 16:34:57,522 INFO L226 Difference]: Without dead ends: 273 [2023-12-02 16:34:57,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 73.2s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:34:57,525 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 56 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:34:57,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3020 Invalid, 2215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 16:34:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-02 16:34:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 233. [2023-12-02 16:34:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 154 states have (on average 1.4025974025974026) internal successors, (216), 155 states have internal predecessors, (216), 59 states have call successors, (59), 19 states have call predecessors, (59), 19 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 16:34:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 333 transitions. [2023-12-02 16:34:57,610 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 333 transitions. Word has length 65 [2023-12-02 16:34:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:34:57,611 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 333 transitions. [2023-12-02 16:34:57,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.0) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 16:34:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 333 transitions. [2023-12-02 16:34:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 16:34:57,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:57,614 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:34:57,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:34:57,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:34:57,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:57,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash 585276194, now seen corresponding path program 1 times [2023-12-02 16:34:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:34:57,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613538886] [2023-12-02 16:34:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:34:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 16:34:57,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:34:57,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613538886] [2023-12-02 16:34:57,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613538886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:34:57,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:34:57,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:34:57,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563290645] [2023-12-02 16:34:57,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:34:57,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:34:57,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:34:57,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:34:57,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:34:57,925 INFO L87 Difference]: Start difference. First operand 233 states and 333 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 16:34:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:34:58,177 INFO L93 Difference]: Finished difference Result 559 states and 830 transitions. [2023-12-02 16:34:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:34:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2023-12-02 16:34:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:34:58,181 INFO L225 Difference]: With dead ends: 559 [2023-12-02 16:34:58,182 INFO L226 Difference]: Without dead ends: 350 [2023-12-02 16:34:58,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:34:58,184 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 55 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:34:58,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 391 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:34:58,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-02 16:34:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2023-12-02 16:34:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 241 states have (on average 1.4605809128630705) internal successors, (352), 242 states have internal predecessors, (352), 84 states have call successors, (84), 19 states have call predecessors, (84), 19 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-02 16:34:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 519 transitions. [2023-12-02 16:34:58,297 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 519 transitions. Word has length 70 [2023-12-02 16:34:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:34:58,297 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 519 transitions. [2023-12-02 16:34:58,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 16:34:58,298 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 519 transitions. [2023-12-02 16:34:58,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 16:34:58,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:34:58,301 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:34:58,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:34:58,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:34:58,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:34:58,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1746538325, now seen corresponding path program 1 times [2023-12-02 16:34:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:34:58,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670402055] [2023-12-02 16:34:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:58,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:34:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 16:34:58,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:34:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670402055] [2023-12-02 16:34:58,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670402055] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:34:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274250561] [2023-12-02 16:34:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:34:58,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:34:58,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:34:58,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:34:58,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:34:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:34:58,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:34:58,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:34:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 16:34:58,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:34:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 16:34:58,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274250561] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:34:58,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1386088549] [2023-12-02 16:34:58,851 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-12-02 16:34:58,851 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:34:58,852 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:34:58,852 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:34:58,852 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:35:53,640 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 16:35:53,816 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 470 for LOIs [2023-12-02 16:35:56,055 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:36:16,453 WARN L293 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 470 DAG size of output: 471 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:36:25,648 WARN L293 SmtUtils]: Spent 9.00s on a formula simplification. DAG size of input: 500 DAG size of output: 495 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:37:02,786 WARN L293 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 493 DAG size of output: 493 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:37:22,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1386088549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:37:22,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:37:22,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 16:37:22,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242262332] [2023-12-02 16:37:22,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:37:22,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 16:37:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:37:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 16:37:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 16:37:22,700 INFO L87 Difference]: Start difference. First operand 345 states and 519 transitions. Second operand has 28 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 16:37:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:37:36,655 INFO L93 Difference]: Finished difference Result 708 states and 1093 transitions. [2023-12-02 16:37:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 16:37:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 71 [2023-12-02 16:37:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:37:36,658 INFO L225 Difference]: With dead ends: 708 [2023-12-02 16:37:36,658 INFO L226 Difference]: Without dead ends: 426 [2023-12-02 16:37:36,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 90.4s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 16:37:36,661 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 74 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:37:36,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2820 Invalid, 2311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-12-02 16:37:36,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-02 16:37:36,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 359. [2023-12-02 16:37:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 253 states have (on average 1.458498023715415) internal successors, (369), 254 states have internal predecessors, (369), 85 states have call successors, (85), 20 states have call predecessors, (85), 20 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-02 16:37:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 538 transitions. [2023-12-02 16:37:36,773 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 538 transitions. Word has length 71 [2023-12-02 16:37:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:37:36,774 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 538 transitions. [2023-12-02 16:37:36,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-12-02 16:37:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 538 transitions. [2023-12-02 16:37:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 16:37:36,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:37:36,776 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] [2023-12-02 16:37:36,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:37:36,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:37:36,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:37:36,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:37:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -967093843, now seen corresponding path program 1 times [2023-12-02 16:37:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:37:36,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208913646] [2023-12-02 16:37:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:36,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:37:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:37:37,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:37:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208913646] [2023-12-02 16:37:37,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208913646] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:37:37,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205057004] [2023-12-02 16:37:37,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:37:37,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:37:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:37:37,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:37:37,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:37:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:37:37,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:37:37,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:37:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:37:37,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:37:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:37:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205057004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:37:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [802164662] [2023-12-02 16:37:37,437 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2023-12-02 16:37:37,437 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:37:37,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:37:37,438 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:37:37,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:39:55,669 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 16:39:55,826 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 28 for LOIs [2023-12-02 16:39:55,853 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 502 for LOIs [2023-12-02 16:39:58,171 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 16:39:58,330 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 733 for LOIs [2023-12-02 16:40:09,636 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:41:03,208 WARN L293 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 574 DAG size of output: 569 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:41:29,343 WARN L293 SmtUtils]: Spent 10.73s on a formula simplification. DAG size of input: 636 DAG size of output: 315 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:41:41,631 WARN L293 SmtUtils]: Spent 11.54s on a formula simplification. DAG size of input: 641 DAG size of output: 316 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:42:01,501 WARN L293 SmtUtils]: Spent 18.95s on a formula simplification. DAG size of input: 733 DAG size of output: 650 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:42:27,778 WARN L293 SmtUtils]: Spent 25.31s on a formula simplification. DAG size of input: 757 DAG size of output: 656 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:42:32,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [802164662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:42:32,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:42:32,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 37 [2023-12-02 16:42:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143464812] [2023-12-02 16:42:32,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:42:32,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 16:42:32,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:42:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 16:42:32,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1216, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 16:42:32,134 INFO L87 Difference]: Start difference. First operand 359 states and 538 transitions. Second operand has 32 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 16:42:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:42:50,572 INFO L93 Difference]: Finished difference Result 748 states and 1155 transitions. [2023-12-02 16:42:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 16:42:50,572 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 74 [2023-12-02 16:42:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:42:50,575 INFO L225 Difference]: With dead ends: 748 [2023-12-02 16:42:50,575 INFO L226 Difference]: Without dead ends: 466 [2023-12-02 16:42:50,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 146.4s TimeCoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:42:50,577 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 63 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 2815 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:42:50,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2704 Invalid, 2827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2815 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-12-02 16:42:50,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-02 16:42:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 388. [2023-12-02 16:42:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 280 states have (on average 1.457142857142857) internal successors, (408), 282 states have internal predecessors, (408), 84 states have call successors, (84), 23 states have call predecessors, (84), 23 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-02 16:42:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 575 transitions. [2023-12-02 16:42:50,704 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 575 transitions. Word has length 74 [2023-12-02 16:42:50,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:42:50,705 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 575 transitions. [2023-12-02 16:42:50,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2023-12-02 16:42:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 575 transitions. [2023-12-02 16:42:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 16:42:50,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:42:50,706 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] [2023-12-02 16:42:50,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:42:50,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 16:42:50,907 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:42:50,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:42:50,907 INFO L85 PathProgramCache]: Analyzing trace with hash -754723974, now seen corresponding path program 1 times [2023-12-02 16:42:50,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:42:50,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714480106] [2023-12-02 16:42:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:50,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:42:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:42:51,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:42:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714480106] [2023-12-02 16:42:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714480106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:42:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991145294] [2023-12-02 16:42:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:42:51,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:42:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:42:51,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:42:51,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:42:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:42:51,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:42:51,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:42:51,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:42:51,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:42:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:42:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991145294] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:42:51,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1243164481] [2023-12-02 16:42:51,386 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2023-12-02 16:42:51,386 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:42:51,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:42:51,387 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:42:51,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:43:50,579 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 16:43:50,739 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 16:43:50,898 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:44:42,641 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 16:45:17,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1243164481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:17,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:45:17,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 16:45:17,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335229717] [2023-12-02 16:45:17,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:17,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 16:45:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:45:17,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 16:45:17,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1154, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 16:45:17,994 INFO L87 Difference]: Start difference. First operand 388 states and 575 transitions. Second operand has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 16:45:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:29,846 INFO L93 Difference]: Finished difference Result 784 states and 1192 transitions. [2023-12-02 16:45:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 16:45:29,846 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 73 [2023-12-02 16:45:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:29,850 INFO L225 Difference]: With dead ends: 784 [2023-12-02 16:45:29,850 INFO L226 Difference]: Without dead ends: 456 [2023-12-02 16:45:29,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 90.8s TimeCoverageRelationStatistics Valid=191, Invalid=1215, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:45:29,852 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 123 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:29,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 2791 Invalid, 2188 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-02 16:45:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-02 16:45:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 408. [2023-12-02 16:45:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 300 states have (on average 1.46) internal successors, (438), 302 states have internal predecessors, (438), 84 states have call successors, (84), 23 states have call predecessors, (84), 23 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-02 16:45:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 605 transitions. [2023-12-02 16:45:30,020 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 605 transitions. Word has length 73 [2023-12-02 16:45:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:30,020 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 605 transitions. [2023-12-02 16:45:30,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-12-02 16:45:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 605 transitions. [2023-12-02 16:45:30,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 16:45:30,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:30,022 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:30,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:45:30,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 16:45:30,223 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:45:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1616645525, now seen corresponding path program 1 times [2023-12-02 16:45:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:45:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338150441] [2023-12-02 16:45:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:45:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-02 16:45:31,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:45:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338150441] [2023-12-02 16:45:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338150441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:31,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-02 16:45:31,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304685829] [2023-12-02 16:45:31,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:31,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 16:45:31,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:45:31,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 16:45:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-12-02 16:45:31,376 INFO L87 Difference]: Start difference. First operand 408 states and 605 transitions. Second operand has 19 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-02 16:45:32,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:32,536 INFO L93 Difference]: Finished difference Result 467 states and 686 transitions. [2023-12-02 16:45:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 16:45:32,537 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 76 [2023-12-02 16:45:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:32,540 INFO L225 Difference]: With dead ends: 467 [2023-12-02 16:45:32,540 INFO L226 Difference]: Without dead ends: 426 [2023-12-02 16:45:32,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2023-12-02 16:45:32,542 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 214 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:32,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1658 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 16:45:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-02 16:45:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2023-12-02 16:45:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 310 states have (on average 1.4419354838709677) internal successors, (447), 311 states have internal predecessors, (447), 88 states have call successors, (88), 27 states have call predecessors, (88), 26 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 16:45:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 622 transitions. [2023-12-02 16:45:32,704 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 622 transitions. Word has length 76 [2023-12-02 16:45:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:32,704 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 622 transitions. [2023-12-02 16:45:32,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-02 16:45:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 622 transitions. [2023-12-02 16:45:32,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-02 16:45:32,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:32,708 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:32,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:45:32,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:45:32,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:32,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1912461619, now seen corresponding path program 1 times [2023-12-02 16:45:32,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:45:32,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303465622] [2023-12-02 16:45:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:32,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:45:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 16:45:32,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:45:32,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303465622] [2023-12-02 16:45:32,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303465622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:32,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:32,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:45:32,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174564089] [2023-12-02 16:45:32,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:32,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:45:32,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:45:32,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:45:32,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:45:32,924 INFO L87 Difference]: Start difference. First operand 425 states and 622 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-02 16:45:33,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:33,258 INFO L93 Difference]: Finished difference Result 486 states and 689 transitions. [2023-12-02 16:45:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:45:33,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 111 [2023-12-02 16:45:33,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:33,261 INFO L225 Difference]: With dead ends: 486 [2023-12-02 16:45:33,261 INFO L226 Difference]: Without dead ends: 425 [2023-12-02 16:45:33,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:45:33,262 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 76 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:33,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 843 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:45:33,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-02 16:45:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2023-12-02 16:45:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 310 states have (on average 1.4387096774193548) internal successors, (446), 311 states have internal predecessors, (446), 88 states have call successors, (88), 27 states have call predecessors, (88), 26 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 16:45:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 621 transitions. [2023-12-02 16:45:33,401 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 621 transitions. Word has length 111 [2023-12-02 16:45:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:33,401 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 621 transitions. [2023-12-02 16:45:33,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-02 16:45:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 621 transitions. [2023-12-02 16:45:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 16:45:33,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:33,404 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:33,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:45:33,404 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:45:33,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash 178079294, now seen corresponding path program 1 times [2023-12-02 16:45:33,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:45:33,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143985288] [2023-12-02 16:45:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:33,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:45:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-02 16:45:33,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:45:33,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143985288] [2023-12-02 16:45:33,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143985288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:45:33,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:45:33,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:45:33,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131561545] [2023-12-02 16:45:33,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:45:33,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:45:33,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:45:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:45:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:45:33,586 INFO L87 Difference]: Start difference. First operand 425 states and 621 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-02 16:45:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:45:34,119 INFO L93 Difference]: Finished difference Result 483 states and 679 transitions. [2023-12-02 16:45:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:45:34,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 116 [2023-12-02 16:45:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:45:34,122 INFO L225 Difference]: With dead ends: 483 [2023-12-02 16:45:34,123 INFO L226 Difference]: Without dead ends: 457 [2023-12-02 16:45:34,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:45:34,123 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 168 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:45:34,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 389 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:45:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-02 16:45:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 454. [2023-12-02 16:45:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 325 states have (on average 1.4184615384615384) internal successors, (461), 327 states have internal predecessors, (461), 94 states have call successors, (94), 35 states have call predecessors, (94), 34 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2023-12-02 16:45:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 648 transitions. [2023-12-02 16:45:34,311 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 648 transitions. Word has length 116 [2023-12-02 16:45:34,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:45:34,312 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 648 transitions. [2023-12-02 16:45:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-02 16:45:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 648 transitions. [2023-12-02 16:45:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 16:45:34,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:45:34,314 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:45:34,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:45:34,315 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:45:34,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:45:34,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1021006122, now seen corresponding path program 1 times [2023-12-02 16:45:34,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:45:34,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348471176] [2023-12-02 16:45:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:45:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 16:45:34,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:45:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348471176] [2023-12-02 16:45:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348471176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:45:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750072004] [2023-12-02 16:45:34,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:45:34,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:45:34,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:45:34,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:45:34,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d985c1-35eb-4860-8120-eb3ee21e8f5c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:45:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:45:34,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:45:34,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:45:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-02 16:45:34,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:45:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 16:45:34,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750072004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:45:34,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1536446203] [2023-12-02 16:45:34,928 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2023-12-02 16:45:34,928 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:45:34,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:45:34,928 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:45:34,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:46:32,845 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 16:46:33,003 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 16:46:33,163 INFO L180 IcfgInterpreter]: Interpretation finished