./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cf7ce6a809409f6f4ca5aec26ee44d6ee6c1bd8459af1b8b074817ec65bb1ea --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:13:21,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:13:21,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:13:21,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:13:21,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:13:21,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:13:21,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:13:21,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:13:21,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:13:21,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:13:21,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:13:21,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:13:21,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:13:21,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:13:21,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:13:21,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:13:21,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:13:21,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:13:21,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:13:21,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:13:21,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:13:21,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:13:21,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:13:21,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:13:21,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:13:21,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:13:21,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:13:21,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:13:21,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:13:21,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:13:21,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:13:21,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:13:21,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:13:21,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:13:21,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:13:21,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:13:21,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:13:21,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:13:21,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:13:21,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:13:21,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:13:21,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:13:21,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:13:21,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:13:21,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:13:21,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:13:21,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:13:21,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:13:21,889 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:13:21,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:13:21,889 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:13:21,890 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:13:21,890 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:13:21,890 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:13:21,891 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:13:21,891 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:13:21,891 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:13:21,892 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:13:21,892 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:13:21,892 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:13:21,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:13:21,894 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:13:21,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:13:21,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:13:21,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:13:21,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:13:21,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:13:21,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:13:21,896 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:13:21,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:13:21,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:13:21,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:13:21,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:13:21,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:13:21,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:13:21,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:13:21,899 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:13:21,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:13:21,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:13:21,900 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:13:21,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:13:21,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:13:21,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:13:21,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cf7ce6a809409f6f4ca5aec26ee44d6ee6c1bd8459af1b8b074817ec65bb1ea [2022-11-19 08:13:22,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:13:22,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:13:22,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:13:22,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:13:22,256 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:13:22,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec6_product21.cil.c [2022-11-19 08:13:22,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/data/8e4e37d98/2a1cee7827d245a9a7f771610c676800/FLAGd00ad1bdd [2022-11-19 08:13:22,973 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:13:22,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/sv-benchmarks/c/product-lines/email_spec6_product21.cil.c [2022-11-19 08:13:23,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/data/8e4e37d98/2a1cee7827d245a9a7f771610c676800/FLAGd00ad1bdd [2022-11-19 08:13:23,301 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/data/8e4e37d98/2a1cee7827d245a9a7f771610c676800 [2022-11-19 08:13:23,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:13:23,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:13:23,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:13:23,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:13:23,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:13:23,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:13:23" (1/1) ... [2022-11-19 08:13:23,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797c8d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:23, skipping insertion in model container [2022-11-19 08:13:23,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:13:23" (1/1) ... [2022-11-19 08:13:23,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:13:23,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:13:23,960 WARN L234 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_1561c575-feb0-4f47-9aec-e6b62f70e005/sv-benchmarks/c/product-lines/email_spec6_product21.cil.c[54302,54315] [2022-11-19 08:13:23,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:13:24,007 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:13:24,093 WARN L234 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_1561c575-feb0-4f47-9aec-e6b62f70e005/sv-benchmarks/c/product-lines/email_spec6_product21.cil.c[54302,54315] [2022-11-19 08:13:24,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:13:24,136 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:13:24,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24 WrapperNode [2022-11-19 08:13:24,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:13:24,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:13:24,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:13:24,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:13:24,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,251 INFO L138 Inliner]: procedures = 129, calls = 222, calls flagged for inlining = 56, calls inlined = 53, statements flattened = 1047 [2022-11-19 08:13:24,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:13:24,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:13:24,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:13:24,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:13:24,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:13:24,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:13:24,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:13:24,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:13:24,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (1/1) ... [2022-11-19 08:13:24,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:13:24,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:13:24,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:13:24,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:13:24,417 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 08:13:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 08:13:24,418 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 08:13:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 08:13:24,418 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 08:13:24,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 08:13:24,418 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 08:13:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 08:13:24,419 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 08:13:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 08:13:24,419 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 08:13:24,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 08:13:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 08:13:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 08:13:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 08:13:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 08:13:24,420 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 08:13:24,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 08:13:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 08:13:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 08:13:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 08:13:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 08:13:24,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 08:13:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:13:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 08:13:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 08:13:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 08:13:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 08:13:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 08:13:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 08:13:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 08:13:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 08:13:24,423 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 08:13:24,423 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 08:13:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-19 08:13:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-19 08:13:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 08:13:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 08:13:24,424 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 08:13:24,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 08:13:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 08:13:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 08:13:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 08:13:24,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 08:13:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:13:24,425 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 08:13:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 08:13:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 08:13:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 08:13:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:13:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:13:24,640 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:13:24,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:13:25,698 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:13:26,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:13:26,365 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:13:26,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:26 BoogieIcfgContainer [2022-11-19 08:13:26,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:13:26,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:13:26,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:13:26,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:13:26,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:13:23" (1/3) ... [2022-11-19 08:13:26,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6455cf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:13:26, skipping insertion in model container [2022-11-19 08:13:26,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:24" (2/3) ... [2022-11-19 08:13:26,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6455cf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:13:26, skipping insertion in model container [2022-11-19 08:13:26,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:26" (3/3) ... [2022-11-19 08:13:26,384 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product21.cil.c [2022-11-19 08:13:26,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:13:26,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:13:26,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:13:26,508 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4afe1ee7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:13:26,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:13:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 116 states have internal predecessors, (146), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-19 08:13:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 08:13:26,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:26,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:26,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2014063884, now seen corresponding path program 1 times [2022-11-19 08:13:26,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:26,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779859450] [2022-11-19 08:13:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:13:27,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:27,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779859450] [2022-11-19 08:13:27,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779859450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:27,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:27,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:13:27,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155941817] [2022-11-19 08:13:27,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:27,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:13:27,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:27,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:13:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:13:27,074 INFO L87 Difference]: Start difference. First operand has 197 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 116 states have internal predecessors, (146), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 08:13:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:27,296 INFO L93 Difference]: Finished difference Result 302 states and 407 transitions. [2022-11-19 08:13:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:13:27,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 90 [2022-11-19 08:13:27,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:27,310 INFO L225 Difference]: With dead ends: 302 [2022-11-19 08:13:27,310 INFO L226 Difference]: Without dead ends: 194 [2022-11-19 08:13:27,324 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 [2022-11-19 08:13:27,329 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:27,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:13:27,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-19 08:13:27,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-11-19 08:13:27,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 109 states have (on average 1.2844036697247707) internal successors, (140), 113 states have internal predecessors, (140), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-19 08:13:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 261 transitions. [2022-11-19 08:13:27,388 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 261 transitions. Word has length 90 [2022-11-19 08:13:27,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:27,390 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 261 transitions. [2022-11-19 08:13:27,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 08:13:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 261 transitions. [2022-11-19 08:13:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 08:13:27,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:27,395 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:27,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:13:27,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:27,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash -416405881, now seen corresponding path program 1 times [2022-11-19 08:13:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:27,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766186755] [2022-11-19 08:13:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:27,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:13:27,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:27,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766186755] [2022-11-19 08:13:27,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766186755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:27,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:27,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:13:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375968422] [2022-11-19 08:13:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:27,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:13:27,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:27,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:13:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:13:27,796 INFO L87 Difference]: Start difference. First operand 194 states and 261 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:13:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:28,004 INFO L93 Difference]: Finished difference Result 298 states and 392 transitions. [2022-11-19 08:13:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:13:28,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 80 [2022-11-19 08:13:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:28,008 INFO L225 Difference]: With dead ends: 298 [2022-11-19 08:13:28,011 INFO L226 Difference]: Without dead ends: 196 [2022-11-19 08:13:28,012 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 [2022-11-19 08:13:28,015 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:28,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:13:28,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-19 08:13:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-19 08:13:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 115 states have internal predecessors, (142), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-19 08:13:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 263 transitions. [2022-11-19 08:13:28,063 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 263 transitions. Word has length 80 [2022-11-19 08:13:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:28,064 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 263 transitions. [2022-11-19 08:13:28,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:13:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 263 transitions. [2022-11-19 08:13:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 08:13:28,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:28,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:28,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:13:28,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash -495194694, now seen corresponding path program 1 times [2022-11-19 08:13:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:28,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302728838] [2022-11-19 08:13:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:28,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:13:28,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:28,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302728838] [2022-11-19 08:13:28,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302728838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:28,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:28,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:13:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33769219] [2022-11-19 08:13:28,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:28,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:13:28,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:28,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:13:28,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:13:28,188 INFO L87 Difference]: Start difference. First operand 196 states and 263 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:13:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:28,319 INFO L93 Difference]: Finished difference Result 427 states and 593 transitions. [2022-11-19 08:13:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:13:28,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-19 08:13:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:28,322 INFO L225 Difference]: With dead ends: 427 [2022-11-19 08:13:28,323 INFO L226 Difference]: Without dead ends: 249 [2022-11-19 08:13:28,324 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 [2022-11-19 08:13:28,325 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 59 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:28,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 468 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:13:28,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-19 08:13:28,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2022-11-19 08:13:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 145 states have (on average 1.3586206896551725) internal successors, (197), 149 states have internal predecessors, (197), 75 states have call successors, (75), 23 states have call predecessors, (75), 23 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-19 08:13:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 346 transitions. [2022-11-19 08:13:28,381 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 346 transitions. Word has length 85 [2022-11-19 08:13:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:28,382 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 346 transitions. [2022-11-19 08:13:28,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 08:13:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 346 transitions. [2022-11-19 08:13:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-19 08:13:28,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:28,386 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:28,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:13:28,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:28,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1161749788, now seen corresponding path program 1 times [2022-11-19 08:13:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:28,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101266706] [2022-11-19 08:13:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:28,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:13:28,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:28,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101266706] [2022-11-19 08:13:28,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101266706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:13:28,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056212331] [2022-11-19 08:13:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:28,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:13:28,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:13:28,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:13:28,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:13:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:29,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:13:29,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:13:29,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:13:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:13:29,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056212331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:13:29,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038835484] [2022-11-19 08:13:29,241 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-19 08:13:29,241 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:13:29,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:13:29,251 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:13:29,252 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:14:06,439 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 448 for LOIs [2022-11-19 08:14:06,763 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-11-19 08:14:42,790 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 454 for LOIs [2022-11-19 08:14:43,105 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 08:14:43,418 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 472 for LOIs [2022-11-19 08:14:47,739 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 267 for LOIs [2022-11-19 08:14:58,140 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-11-19 08:14:58,180 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 456 for LOIs [2022-11-19 08:14:59,040 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 245 for LOIs [2022-11-19 08:14:59,085 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 442 for LOIs [2022-11-19 08:14:59,383 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:15:12,956 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 448 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:18,455 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 471 DAG size of output: 268 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:32,789 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 468 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:44,996 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 490 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:56,773 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 512 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:04,530 WARN L233 SmtUtils]: Spent 7.49s on a formula simplification. DAG size of input: 563 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:12,390 WARN L233 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 565 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:18,023 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 569 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:23,635 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 565 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:29,395 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 571 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:37,248 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 564 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:17:02,814 WARN L233 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 527 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:18:14,240 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 564 DAG size of output: 370 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:18:21,285 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 565 DAG size of output: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:18:26,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1038835484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:26,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:18:26,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-11-19 08:18:26,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041403505] [2022-11-19 08:18:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:26,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-19 08:18:26,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-19 08:18:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3037, Unknown=0, NotChecked=0, Total=3192 [2022-11-19 08:18:26,063 INFO L87 Difference]: Start difference. First operand 244 states and 346 transitions. Second operand has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-19 08:19:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:19:13,090 INFO L93 Difference]: Finished difference Result 588 states and 868 transitions. [2022-11-19 08:19:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-19 08:19:13,091 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 86 [2022-11-19 08:19:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:19:13,097 INFO L225 Difference]: With dead ends: 588 [2022-11-19 08:19:13,097 INFO L226 Difference]: Without dead ends: 362 [2022-11-19 08:19:13,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 226.0s TimeCoverageRelationStatistics Valid=191, Invalid=3715, Unknown=0, NotChecked=0, Total=3906 [2022-11-19 08:19:13,100 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 109 mSDsluCounter, 6111 mSDsCounter, 0 mSdLazyCounter, 7051 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 7069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:19:13,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 6358 Invalid, 7069 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [18 Valid, 7051 Invalid, 0 Unknown, 0 Unchecked, 27.1s Time] [2022-11-19 08:19:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-19 08:19:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 320. [2022-11-19 08:19:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 200 states have (on average 1.345) internal successors, (269), 205 states have internal predecessors, (269), 89 states have call successors, (89), 32 states have call predecessors, (89), 30 states have return successors, (89), 84 states have call predecessors, (89), 88 states have call successors, (89) [2022-11-19 08:19:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 447 transitions. [2022-11-19 08:19:13,282 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 447 transitions. Word has length 86 [2022-11-19 08:19:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:19:13,283 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 447 transitions. [2022-11-19 08:19:13,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-19 08:19:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 447 transitions. [2022-11-19 08:19:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 08:19:13,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:19:13,288 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:19:13,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:19:13,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:19:13,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:19:13,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:19:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash 530345616, now seen corresponding path program 1 times [2022-11-19 08:19:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:19:13,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037246519] [2022-11-19 08:19:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:19:13,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:19:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:19:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-19 08:19:13,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:19:13,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037246519] [2022-11-19 08:19:13,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037246519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:19:13,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:19:13,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:19:13,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423804869] [2022-11-19 08:19:13,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:19:13,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:19:13,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:19:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:19:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:19:13,667 INFO L87 Difference]: Start difference. First operand 320 states and 447 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:19:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:19:13,993 INFO L93 Difference]: Finished difference Result 742 states and 1074 transitions. [2022-11-19 08:19:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:19:13,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 102 [2022-11-19 08:19:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:19:13,999 INFO L225 Difference]: With dead ends: 742 [2022-11-19 08:19:13,999 INFO L226 Difference]: Without dead ends: 448 [2022-11-19 08:19:14,000 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 [2022-11-19 08:19:14,003 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 57 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:19:14,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 476 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:19:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-19 08:19:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 441. [2022-11-19 08:19:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 290 states have (on average 1.410344827586207) internal successors, (409), 295 states have internal predecessors, (409), 120 states have call successors, (120), 32 states have call predecessors, (120), 30 states have return successors, (120), 115 states have call predecessors, (120), 119 states have call successors, (120) [2022-11-19 08:19:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 649 transitions. [2022-11-19 08:19:14,233 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 649 transitions. Word has length 102 [2022-11-19 08:19:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:19:14,234 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 649 transitions. [2022-11-19 08:19:14,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 08:19:14,234 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 649 transitions. [2022-11-19 08:19:14,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 08:19:14,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:19:14,237 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:19:14,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:19:14,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:19:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:19:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 455853532, now seen corresponding path program 1 times [2022-11-19 08:19:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:19:14,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389134315] [2022-11-19 08:19:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:19:14,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:19:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:19:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:19:14,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:19:14,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389134315] [2022-11-19 08:19:14,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389134315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:19:14,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500910075] [2022-11-19 08:19:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:19:14,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:19:14,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:19:14,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:19:14,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:19:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:19:14,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:19:14,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:19:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:19:14,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:19:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:19:14,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500910075] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:19:14,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1331033532] [2022-11-19 08:19:14,846 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-19 08:19:14,846 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:19:14,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:19:14,847 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:19:14,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:19:47,171 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 08:19:47,486 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-11-19 08:19:49,184 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-19 08:19:49,227 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 08:19:49,531 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-11-19 08:19:50,285 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 263 for LOIs [2022-11-19 08:19:57,726 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 441 for LOIs [2022-11-19 08:19:58,355 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-11-19 08:20:00,332 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 241 for LOIs [2022-11-19 08:20:00,373 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 226 for LOIs [2022-11-19 08:20:00,411 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:20:32,346 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 468 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:20:44,310 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 490 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:20:56,041 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 512 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:21:24,523 WARN L233 SmtUtils]: Spent 13.25s on a formula simplification. DAG size of input: 472 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:21:55,287 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 441 DAG size of output: 247 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:01,858 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 460 DAG size of output: 255 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:27,376 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 560 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:38,460 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 571 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:22:42,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1331033532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:22:42,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:22:42,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2022-11-19 08:22:42,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112058412] [2022-11-19 08:22:42,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:22:42,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-19 08:22:42,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:22:42,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-19 08:22:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=3477, Unknown=0, NotChecked=0, Total=3660 [2022-11-19 08:22:42,854 INFO L87 Difference]: Start difference. First operand 441 states and 649 transitions. Second operand has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-19 08:23:56,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:23:56,095 INFO L93 Difference]: Finished difference Result 933 states and 1423 transitions. [2022-11-19 08:23:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-19 08:23:56,096 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) Word has length 92 [2022-11-19 08:23:56,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:23:56,099 INFO L225 Difference]: With dead ends: 933 [2022-11-19 08:23:56,100 INFO L226 Difference]: Without dead ends: 607 [2022-11-19 08:23:56,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 203.4s TimeCoverageRelationStatistics Valid=308, Invalid=5242, Unknown=0, NotChecked=0, Total=5550 [2022-11-19 08:23:56,103 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 253 mSDsluCounter, 6296 mSDsCounter, 0 mSdLazyCounter, 8121 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 6537 SdHoareTripleChecker+Invalid, 8154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 8121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:23:56,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 6537 Invalid, 8154 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [33 Valid, 8121 Invalid, 0 Unknown, 0 Unchecked, 31.4s Time] [2022-11-19 08:23:56,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-19 08:23:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 457. [2022-11-19 08:23:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 302 states have (on average 1.413907284768212) internal successors, (427), 309 states have internal predecessors, (427), 123 states have call successors, (123), 33 states have call predecessors, (123), 31 states have return successors, (123), 116 states have call predecessors, (123), 122 states have call successors, (123) [2022-11-19 08:23:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 673 transitions. [2022-11-19 08:23:56,339 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 673 transitions. Word has length 92 [2022-11-19 08:23:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:23:56,339 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 673 transitions. [2022-11-19 08:23:56,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-19 08:23:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 673 transitions. [2022-11-19 08:23:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-19 08:23:56,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:23:56,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:23:56,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:23:56,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:23:56,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:23:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:23:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1675500679, now seen corresponding path program 1 times [2022-11-19 08:23:56,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:23:56,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777193094] [2022-11-19 08:23:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:56,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:23:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:23:56,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:23:56,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777193094] [2022-11-19 08:23:56,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777193094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:23:56,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006159161] [2022-11-19 08:23:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:23:56,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:23:56,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:23:56,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:23:56,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1561c575-feb0-4f47-9aec-e6b62f70e005/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:23:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:23:57,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:23:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:23:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:23:57,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:23:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 08:23:57,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006159161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:23:57,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1489455701] [2022-11-19 08:23:57,279 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-11-19 08:23:57,280 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:23:57,281 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:23:57,282 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:23:57,282 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:25:17,153 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 08:25:17,457 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-19 08:25:17,935 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-19 08:25:18,407 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 232 for LOIs [2022-11-19 08:25:20,139 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2022-11-19 08:25:20,201 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 08:25:20,516 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 232 for LOIs [2022-11-19 08:25:21,273 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 212 for LOIs [2022-11-19 08:25:21,316 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 212 for LOIs [2022-11-19 08:25:21,350 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 202 for LOIs [2022-11-19 08:25:21,381 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:25:50,873 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 468 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:02,889 WARN L233 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 490 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:14,650 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 512 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:32,051 WARN L233 SmtUtils]: Spent 10.34s on a formula simplification. DAG size of input: 532 DAG size of output: 413 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:26:50,543 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 527 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)