./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh --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 82e24cc91d79ad041473748268d13bac909e458d30ed1ab080cccaeb5ccb7cec --- 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-2329fc7 [2022-12-14 15:27:56,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:27:56,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:27:56,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:27:56,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:27:56,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:27:56,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:27:56,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:27:56,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:27:56,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:27:56,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:27:56,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:27:56,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:27:56,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:27:56,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:27:56,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:27:56,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:27:56,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:27:56,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:27:56,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:27:56,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:27:56,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:27:56,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:27:56,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:27:56,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:27:56,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:27:56,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:27:56,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:27:56,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:27:56,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:27:56,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:27:56,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:27:56,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:27:56,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:27:56,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:27:56,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:27:56,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:27:56,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:27:56,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:27:56,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:27:56,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:27:56,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 15:27:56,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:27:56,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:27:56,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:27:56,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:27:56,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:27:56,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:27:56,697 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:27:56,697 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:27:56,697 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:27:56,697 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:27:56,698 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:27:56,698 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:27:56,698 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:27:56,698 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:27:56,698 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:27:56,698 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:27:56,698 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:27:56,698 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:27:56,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:27:56,699 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 15:27:56,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:27:56,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 15:27:56,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:27:56,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:27:56,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:27:56,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:27:56,700 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 15:27:56,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:27:56,700 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:27:56,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:27:56,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:27:56,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:27:56,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:27:56,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:27:56,701 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:27:56,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:27:56,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:27:56,701 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:27:56,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:27:56,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:27:56,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:27:56,701 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_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e24cc91d79ad041473748268d13bac909e458d30ed1ab080cccaeb5ccb7cec [2022-12-14 15:27:56,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:27:56,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:27:56,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:27:56,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:27:56,891 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:27:56,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product34.cil.c [2022-12-14 15:27:59,484 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:27:59,676 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:27:59,677 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c [2022-12-14 15:27:59,689 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/data/6e6658b9f/65bf444aa0384e3e963c9973e185c192/FLAG7567b2dc0 [2022-12-14 15:27:59,700 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/data/6e6658b9f/65bf444aa0384e3e963c9973e185c192 [2022-12-14 15:27:59,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:27:59,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:27:59,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:27:59,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:27:59,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:27:59,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:27:59" (1/1) ... [2022-12-14 15:27:59,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c126b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:27:59, skipping insertion in model container [2022-12-14 15:27:59,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:27:59" (1/1) ... [2022-12-14 15:27:59,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:27:59,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:27:59,863 WARN L237 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_80bf37c3-f20f-4119-87d6-cdffa6ba0593/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-12-14 15:27:59,922 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:27:59,926 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:27:59,931 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,035 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,041 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,042 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,043 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,054 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,087 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:28:00,146 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:28:00,157 WARN L237 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_80bf37c3-f20f-4119-87d6-cdffa6ba0593/sv-benchmarks/c/product-lines/email_spec4_product34.cil.c[1542,1555] [2022-12-14 15:28:00,160 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,161 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,164 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,200 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,202 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,202 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,203 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,207 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,217 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 15:28:00,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:28:00,249 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:28:00,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00 WrapperNode [2022-12-14 15:28:00,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:28:00,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:28:00,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:28:00,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:28:00,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,304 INFO L138 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1096 [2022-12-14 15:28:00,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:28:00,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:28:00,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:28:00,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:28:00,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,335 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:28:00,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:28:00,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:28:00,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:28:00,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (1/1) ... [2022-12-14 15:28:00,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:28:00,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:28:00,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:28:00,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:28:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 15:28:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 15:28:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-12-14 15:28:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-12-14 15:28:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 15:28:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 15:28:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-12-14 15:28:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-12-14 15:28:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 15:28:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 15:28:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 15:28:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 15:28:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 15:28:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 15:28:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 15:28:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 15:28:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 15:28:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 15:28:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 15:28:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 15:28:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 15:28:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 15:28:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 15:28:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 15:28:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 15:28:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 15:28:00,407 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 15:28:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 15:28:00,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 15:28:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 15:28:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 15:28:00,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 15:28:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-14 15:28:00,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-14 15:28:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-12-14 15:28:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-12-14 15:28:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 15:28:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 15:28:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 15:28:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 15:28:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 15:28:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 15:28:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-12-14 15:28:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-12-14 15:28:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-14 15:28:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-14 15:28:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 15:28:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 15:28:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 15:28:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 15:28:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 15:28:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 15:28:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 15:28:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 15:28:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 15:28:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 15:28:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 15:28:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-12-14 15:28:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-12-14 15:28:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:28:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:28:00,585 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:28:00,587 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:28:01,300 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:28:01,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:28:01,813 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:28:01,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:28:01 BoogieIcfgContainer [2022-12-14 15:28:01,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:28:01,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:28:01,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:28:01,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:28:01,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:27:59" (1/3) ... [2022-12-14 15:28:01,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a9b537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:28:01, skipping insertion in model container [2022-12-14 15:28:01,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:28:00" (2/3) ... [2022-12-14 15:28:01,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a9b537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:28:01, skipping insertion in model container [2022-12-14 15:28:01,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:28:01" (3/3) ... [2022-12-14 15:28:01,824 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product34.cil.c [2022-12-14 15:28:01,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:28:01,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:28:01,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:28:01,901 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;@2c6100f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:28:01,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:28:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 135 states have internal predecessors, (168), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-12-14 15:28:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 15:28:01,919 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:28:01,920 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] [2022-12-14 15:28:01,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:28:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:28:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -573958689, now seen corresponding path program 1 times [2022-12-14 15:28:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:28:01,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751065906] [2022-12-14 15:28:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:28:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:28:02,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:28:02,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751065906] [2022-12-14 15:28:02,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751065906] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:28:02,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:28:02,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 15:28:02,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561468049] [2022-12-14 15:28:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:28:02,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 15:28:02,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:28:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 15:28:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 15:28:02,200 INFO L87 Difference]: Start difference. First operand has 231 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 135 states have internal predecessors, (168), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:28:02,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:28:02,339 INFO L93 Difference]: Finished difference Result 370 states and 491 transitions. [2022-12-14 15:28:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 15:28:02,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-12-14 15:28:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:28:02,353 INFO L225 Difference]: With dead ends: 370 [2022-12-14 15:28:02,353 INFO L226 Difference]: Without dead ends: 228 [2022-12-14 15:28:02,358 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 [2022-12-14 15:28:02,362 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:28:02,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:28:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-12-14 15:28:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-12-14 15:28:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 128 states have (on average 1.265625) internal successors, (162), 132 states have internal predecessors, (162), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-12-14 15:28:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 303 transitions. [2022-12-14 15:28:02,420 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 303 transitions. Word has length 75 [2022-12-14 15:28:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:28:02,422 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 303 transitions. [2022-12-14 15:28:02,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:28:02,423 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 303 transitions. [2022-12-14 15:28:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 15:28:02,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:28:02,426 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] [2022-12-14 15:28:02,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:28:02,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:28:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:28:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1353133611, now seen corresponding path program 1 times [2022-12-14 15:28:02,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:28:02,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393932042] [2022-12-14 15:28:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:02,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:28:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:28:02,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:28:02,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393932042] [2022-12-14 15:28:02,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393932042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:28:02,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:28:02,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:28:02,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618406564] [2022-12-14 15:28:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:28:02,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:28:02,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:28:02,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:28:02,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:28:02,645 INFO L87 Difference]: Start difference. First operand 228 states and 303 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:28:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:28:02,762 INFO L93 Difference]: Finished difference Result 366 states and 476 transitions. [2022-12-14 15:28:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:28:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-12-14 15:28:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:28:02,765 INFO L225 Difference]: With dead ends: 366 [2022-12-14 15:28:02,766 INFO L226 Difference]: Without dead ends: 230 [2022-12-14 15:28:02,767 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 [2022-12-14 15:28:02,768 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:28:02,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:28:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-12-14 15:28:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-12-14 15:28:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 134 states have internal predecessors, (164), 71 states have call successors, (71), 28 states have call predecessors, (71), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-12-14 15:28:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 305 transitions. [2022-12-14 15:28:02,789 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 305 transitions. Word has length 76 [2022-12-14 15:28:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:28:02,789 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 305 transitions. [2022-12-14 15:28:02,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:28:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 305 transitions. [2022-12-14 15:28:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 15:28:02,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:28:02,792 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] [2022-12-14 15:28:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 15:28:02,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:28:02,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:28:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash 489867141, now seen corresponding path program 1 times [2022-12-14 15:28:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:28:02,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490825816] [2022-12-14 15:28:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:28:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:28:02,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:28:02,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490825816] [2022-12-14 15:28:02,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490825816] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:28:02,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:28:02,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:28:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296640696] [2022-12-14 15:28:02,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:28:02,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:28:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:28:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:28:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:28:02,920 INFO L87 Difference]: Start difference. First operand 230 states and 305 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:28:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:28:03,041 INFO L93 Difference]: Finished difference Result 495 states and 677 transitions. [2022-12-14 15:28:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:28:03,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-12-14 15:28:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:28:03,044 INFO L225 Difference]: With dead ends: 495 [2022-12-14 15:28:03,044 INFO L226 Difference]: Without dead ends: 283 [2022-12-14 15:28:03,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:28:03,046 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 59 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:28:03,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 539 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:28:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-12-14 15:28:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2022-12-14 15:28:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 164 states have (on average 1.3353658536585367) internal successors, (219), 168 states have internal predecessors, (219), 85 states have call successors, (85), 28 states have call predecessors, (85), 28 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-14 15:28:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 388 transitions. [2022-12-14 15:28:03,068 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 388 transitions. Word has length 81 [2022-12-14 15:28:03,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:28:03,068 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 388 transitions. [2022-12-14 15:28:03,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:28:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 388 transitions. [2022-12-14 15:28:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 15:28:03,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:28:03,071 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] [2022-12-14 15:28:03,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 15:28:03,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:28:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:28:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash 278725327, now seen corresponding path program 1 times [2022-12-14 15:28:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:28:03,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941567093] [2022-12-14 15:28:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:03,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:28:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:28:03,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:28:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941567093] [2022-12-14 15:28:03,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941567093] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:28:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389833223] [2022-12-14 15:28:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:28:03,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:28:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:28:03,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:28:03,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 15:28:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:28:03,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 15:28:03,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:28:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:28:03,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:28:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:28:03,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389833223] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:28:03,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [531716092] [2022-12-14 15:28:03,596 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-12-14 15:28:03,596 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:28:03,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:28:03,603 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:28:03,604 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:28:33,355 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 15:28:33,641 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 480 for LOIs [2022-12-14 15:29:08,272 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-12-14 15:29:08,558 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 15:29:08,845 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 478 for LOIs [2022-12-14 15:29:14,433 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 274 for LOIs [2022-12-14 15:29:23,920 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 440 for LOIs [2022-12-14 15:29:24,175 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2022-12-14 15:29:24,240 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-12-14 15:29:24,278 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-12-14 15:29:24,882 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2022-12-14 15:29:24,921 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-12-14 15:29:24,964 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:30:42,907 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 538 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:31:33,431 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 548 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:31:45,258 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 555 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:31:49,263 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3930#(and (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~msg#1| 1) (= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~msg#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |old(~__ste_email_isEncrypted1~0)| 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~6#1| 2147483647) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~client#1|) (<= |outgoing__wrappee__Encrypt_~receiver~0#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_email_encryptionKey1~0 0) (<= |outgoing__wrappee__Encrypt_mail_#in~msg#1| 1) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (= |outgoing__wrappee__Encrypt_~pubkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing__wrappee__Encrypt_#in~client#1| 1) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= |old(~queued_client~0)| 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__wrappee__Encrypt_~tmp~7#1| 2) (<= |outgoing__wrappee__Encrypt_mail_~msg#1| 1) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~msg#1|) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing__wrappee__Encrypt_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= 0 |outgoing__wrappee__Encrypt_~tmp___0~2#1|) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (<= 0 (+ |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~6#1| 2147483648)) (= ~__ste_client_name1~0.offset 0) (not (= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~7#1| 0)) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~client#1|) (<= |outgoing__wrappee__Encrypt_mail_~client#1| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (<= 2 |outgoing__wrappee__Encrypt_~tmp~7#1|) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1| 1) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (= ~__ste_Client_Keyring0_User0~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~client#1| 1) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~7#1| 1) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= |outgoing__wrappee__Encrypt_~client#1| 1) (<= 1 |outgoing__wrappee__Encrypt_#in~client#1|) (= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp~16#1| 0) (= ~__ste_email_id0~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= |outgoing__wrappee__Encrypt_getClientId_~handle#1| 1) (<= |outgoing__wrappee__Encrypt_~msg#1| 1) (= 3 ~chuck~0) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= ~__ste_email_isSigned1~0 0) (<= ~__ste_email_subject0~0.offset 0) (<= |outgoing__wrappee__Encrypt_getClientId_#in~handle#1| 1) (<= 1 |outgoing__wrappee__Encrypt_getClientId_#in~handle#1|) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 1 |outgoing__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= ~__ste_ClientKeyring_size1~0 0) (<= 0 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp___0~7#1|) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~17#1| 2147483648)) (<= |outgoing__wrappee__Encrypt_#in~msg#1| 1) (<= 0 ~head~0.base) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~17#1| 2147483647) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 2 |outgoing__wrappee__Encrypt_~receiver~0#1|) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~msg#1|) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_ClientKeyring_size1~0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= 1 |outgoing__wrappee__Encrypt_~msg#1|) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~msg#1|) (<= |old(~__ste_email_encryptionKey1~0)| 0) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= |old(~queue_empty~0)| 1) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_#in~msg#1|) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= 1 |outgoing__wrappee__Encrypt_getClientId_~handle#1|) (<= ~__ste_Client_AddressBook0_Address2~0 0) (= ~__ste_Client_Keyring2_User2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~__utac__ad__arg2~0#1|) (<= ~head~0.base 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1| 1) (<= ~__ste_client_forwardReceiver1~0 0) (<= |outgoing__wrappee__Encrypt_~tmp___0~2#1| 0) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1|) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~client#1|) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing__wrappee__Encrypt_mail_#in~client#1| 1) (<= |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 0 ~__ste_Client_Keyring2_User1~0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_#in~client#1|) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (= ~__ste_client_privateKey0~0 |outgoing__wrappee__Encrypt___utac_acc__SignForward_spec__1_~tmp~16#1|) (<= 0 ~__ste_client_forwardReceiver1~0) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483648)) (<= |outgoing__wrappee__Encrypt_mail_~__utac__ad__arg1~0#1| 1) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= |outgoing__wrappee__Encrypt_mail_~__utac__ad__arg2~0#1| 1) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483647) (<= ~queued_client~0 0))' at error location [2022-12-14 15:31:49,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 15:31:49,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 15:31:49,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 15:31:49,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628718030] [2022-12-14 15:31:49,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 15:31:49,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 15:31:49,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:49,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 15:31:49,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=4230, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 15:31:49,266 INFO L87 Difference]: Start difference. First operand 278 states and 388 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 15:31:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:49,453 INFO L93 Difference]: Finished difference Result 689 states and 1026 transitions. [2022-12-14 15:31:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:31:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 82 [2022-12-14 15:31:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:49,456 INFO L225 Difference]: With dead ends: 689 [2022-12-14 15:31:49,457 INFO L226 Difference]: Without dead ends: 553 [2022-12-14 15:31:49,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 144.2s TimeCoverageRelationStatistics Valid=192, Invalid=4230, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 15:31:49,460 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 218 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:49,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 976 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:49,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-12-14 15:31:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 538. [2022-12-14 15:31:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 345 states have (on average 1.463768115942029) internal successors, (505), 349 states have internal predecessors, (505), 164 states have call successors, (164), 28 states have call predecessors, (164), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2022-12-14 15:31:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 832 transitions. [2022-12-14 15:31:49,494 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 832 transitions. Word has length 82 [2022-12-14 15:31:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:49,495 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 832 transitions. [2022-12-14 15:31:49,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-12-14 15:31:49,495 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 832 transitions. [2022-12-14 15:31:49,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 15:31:49,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:49,499 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:49,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:31:49,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:31:49,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:49,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 122418290, now seen corresponding path program 1 times [2022-12-14 15:31:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:49,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204527114] [2022-12-14 15:31:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:49,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:49,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:49,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204527114] [2022-12-14 15:31:49,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204527114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:49,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:49,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:49,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828146177] [2022-12-14 15:31:49,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:49,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:49,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:49,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:49,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:49,797 INFO L87 Difference]: Start difference. First operand 538 states and 832 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:49,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:49,941 INFO L93 Difference]: Finished difference Result 1306 states and 2062 transitions. [2022-12-14 15:31:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:49,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2022-12-14 15:31:49,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:49,946 INFO L225 Difference]: With dead ends: 1306 [2022-12-14 15:31:49,946 INFO L226 Difference]: Without dead ends: 800 [2022-12-14 15:31:49,948 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 [2022-12-14 15:31:49,949 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 57 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:49,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 540 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-12-14 15:31:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 795. [2022-12-14 15:31:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 523 states have (on average 1.4875717017208414) internal successors, (778), 527 states have internal predecessors, (778), 243 states have call successors, (243), 28 states have call predecessors, (243), 28 states have return successors, (242), 241 states have call predecessors, (242), 242 states have call successors, (242) [2022-12-14 15:31:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1263 transitions. [2022-12-14 15:31:50,000 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1263 transitions. Word has length 88 [2022-12-14 15:31:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:50,000 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1263 transitions. [2022-12-14 15:31:50,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1263 transitions. [2022-12-14 15:31:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 15:31:50,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:50,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 15:31:50,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:50,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1830863547, now seen corresponding path program 1 times [2022-12-14 15:31:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:50,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978748951] [2022-12-14 15:31:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:50,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:50,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978748951] [2022-12-14 15:31:50,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978748951] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:50,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:50,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:50,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509442566] [2022-12-14 15:31:50,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:50,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:50,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:50,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:50,087 INFO L87 Difference]: Start difference. First operand 795 states and 1263 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:50,250 INFO L93 Difference]: Finished difference Result 1928 states and 3109 transitions. [2022-12-14 15:31:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:50,251 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 89 [2022-12-14 15:31:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:50,255 INFO L225 Difference]: With dead ends: 1928 [2022-12-14 15:31:50,255 INFO L226 Difference]: Without dead ends: 1195 [2022-12-14 15:31:50,257 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 [2022-12-14 15:31:50,258 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 55 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:50,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 532 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2022-12-14 15:31:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1190. [2022-12-14 15:31:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 799 states have (on average 1.4993742177722154) internal successors, (1198), 803 states have internal predecessors, (1198), 362 states have call successors, (362), 28 states have call predecessors, (362), 28 states have return successors, (361), 360 states have call predecessors, (361), 361 states have call successors, (361) [2022-12-14 15:31:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1921 transitions. [2022-12-14 15:31:50,304 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1921 transitions. Word has length 89 [2022-12-14 15:31:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:50,304 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1921 transitions. [2022-12-14 15:31:50,304 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1921 transitions. [2022-12-14 15:31:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 15:31:50,308 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:50,308 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:50,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 15:31:50,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1763900336, now seen corresponding path program 1 times [2022-12-14 15:31:50,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:50,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977343138] [2022-12-14 15:31:50,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:50,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:50,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:50,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977343138] [2022-12-14 15:31:50,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977343138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:50,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:50,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:50,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570006258] [2022-12-14 15:31:50,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:50,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:50,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:50,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:50,367 INFO L87 Difference]: Start difference. First operand 1190 states and 1921 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:50,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:50,556 INFO L93 Difference]: Finished difference Result 2831 states and 4621 transitions. [2022-12-14 15:31:50,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:50,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 90 [2022-12-14 15:31:50,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:50,563 INFO L225 Difference]: With dead ends: 2831 [2022-12-14 15:31:50,563 INFO L226 Difference]: Without dead ends: 1783 [2022-12-14 15:31:50,565 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 [2022-12-14 15:31:50,566 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 53 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:50,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 525 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2022-12-14 15:31:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1778. [2022-12-14 15:31:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1225 states have (on average 1.5069387755102042) internal successors, (1846), 1229 states have internal predecessors, (1846), 524 states have call successors, (524), 28 states have call predecessors, (524), 28 states have return successors, (523), 522 states have call predecessors, (523), 523 states have call successors, (523) [2022-12-14 15:31:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2893 transitions. [2022-12-14 15:31:50,652 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2893 transitions. Word has length 90 [2022-12-14 15:31:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:50,653 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2893 transitions. [2022-12-14 15:31:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2893 transitions. [2022-12-14 15:31:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-14 15:31:50,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:50,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:50,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 15:31:50,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1827688292, now seen corresponding path program 1 times [2022-12-14 15:31:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:50,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605410839] [2022-12-14 15:31:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:50,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:50,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:50,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605410839] [2022-12-14 15:31:50,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605410839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:50,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:50,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:50,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902844105] [2022-12-14 15:31:50,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:50,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:50,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:50,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:50,710 INFO L87 Difference]: Start difference. First operand 1778 states and 2893 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:50,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:50,892 INFO L93 Difference]: Finished difference Result 4216 states and 6929 transitions. [2022-12-14 15:31:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:50,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 91 [2022-12-14 15:31:50,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:50,904 INFO L225 Difference]: With dead ends: 4216 [2022-12-14 15:31:50,904 INFO L226 Difference]: Without dead ends: 2717 [2022-12-14 15:31:50,908 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 [2022-12-14 15:31:50,909 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 51 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:50,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 527 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:50,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2022-12-14 15:31:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2712. [2022-12-14 15:31:51,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 1914 states have (on average 1.5109717868338557) internal successors, (2892), 1918 states have internal predecessors, (2892), 769 states have call successors, (769), 28 states have call predecessors, (769), 28 states have return successors, (768), 767 states have call predecessors, (768), 768 states have call successors, (768) [2022-12-14 15:31:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4429 transitions. [2022-12-14 15:31:51,098 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4429 transitions. Word has length 91 [2022-12-14 15:31:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:51,098 INFO L495 AbstractCegarLoop]: Abstraction has 2712 states and 4429 transitions. [2022-12-14 15:31:51,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4429 transitions. [2022-12-14 15:31:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 15:31:51,112 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:51,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:51,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 15:31:51,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2103784596, now seen corresponding path program 1 times [2022-12-14 15:31:51,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:51,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691409079] [2022-12-14 15:31:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:51,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:51,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:51,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691409079] [2022-12-14 15:31:51,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691409079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:51,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:51,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355122815] [2022-12-14 15:31:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:51,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:51,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:51,197 INFO L87 Difference]: Start difference. First operand 2712 states and 4429 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:51,487 INFO L93 Difference]: Finished difference Result 6732 states and 11089 transitions. [2022-12-14 15:31:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:51,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2022-12-14 15:31:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:51,503 INFO L225 Difference]: With dead ends: 6732 [2022-12-14 15:31:51,503 INFO L226 Difference]: Without dead ends: 4442 [2022-12-14 15:31:51,509 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 [2022-12-14 15:31:51,509 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 49 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:51,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 543 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:51,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-12-14 15:31:51,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4437. [2022-12-14 15:31:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 3146 states have (on average 1.5019071837253655) internal successors, (4725), 3150 states have internal predecessors, (4725), 1262 states have call successors, (1262), 28 states have call predecessors, (1262), 28 states have return successors, (1261), 1260 states have call predecessors, (1261), 1261 states have call successors, (1261) [2022-12-14 15:31:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 7248 transitions. [2022-12-14 15:31:51,729 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 7248 transitions. Word has length 92 [2022-12-14 15:31:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:51,730 INFO L495 AbstractCegarLoop]: Abstraction has 4437 states and 7248 transitions. [2022-12-14 15:31:51,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 7248 transitions. [2022-12-14 15:31:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 15:31:51,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:51,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:51,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 15:31:51,741 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1602311808, now seen corresponding path program 1 times [2022-12-14 15:31:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:51,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711405126] [2022-12-14 15:31:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:51,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:51,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711405126] [2022-12-14 15:31:51,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711405126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:51,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:51,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237776654] [2022-12-14 15:31:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:51,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:51,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:51,794 INFO L87 Difference]: Start difference. First operand 4437 states and 7248 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:52,242 INFO L93 Difference]: Finished difference Result 11148 states and 18374 transitions. [2022-12-14 15:31:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:52,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-12-14 15:31:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:52,271 INFO L225 Difference]: With dead ends: 11148 [2022-12-14 15:31:52,271 INFO L226 Difference]: Without dead ends: 7399 [2022-12-14 15:31:52,281 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 [2022-12-14 15:31:52,282 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 47 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:52,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 530 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:52,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2022-12-14 15:31:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 7394. [2022-12-14 15:31:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7394 states, 5281 states have (on average 1.4978223821245975) internal successors, (7910), 5285 states have internal predecessors, (7910), 2084 states have call successors, (2084), 28 states have call predecessors, (2084), 28 states have return successors, (2083), 2082 states have call predecessors, (2083), 2083 states have call successors, (2083) [2022-12-14 15:31:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7394 states to 7394 states and 12077 transitions. [2022-12-14 15:31:52,709 INFO L78 Accepts]: Start accepts. Automaton has 7394 states and 12077 transitions. Word has length 93 [2022-12-14 15:31:52,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:52,710 INFO L495 AbstractCegarLoop]: Abstraction has 7394 states and 12077 transitions. [2022-12-14 15:31:52,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7394 states and 12077 transitions. [2022-12-14 15:31:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 15:31:52,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:52,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:52,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 15:31:52,725 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1429415686, now seen corresponding path program 1 times [2022-12-14 15:31:52,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:52,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200490184] [2022-12-14 15:31:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:52,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:52,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200490184] [2022-12-14 15:31:52,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200490184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:52,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:52,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:52,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993669580] [2022-12-14 15:31:52,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:52,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:52,779 INFO L87 Difference]: Start difference. First operand 7394 states and 12077 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:53,364 INFO L93 Difference]: Finished difference Result 18615 states and 30636 transitions. [2022-12-14 15:31:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:53,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-12-14 15:31:53,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:53,417 INFO L225 Difference]: With dead ends: 18615 [2022-12-14 15:31:53,418 INFO L226 Difference]: Without dead ends: 12343 [2022-12-14 15:31:53,432 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 [2022-12-14 15:31:53,432 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 45 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:53,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 528 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12343 states. [2022-12-14 15:31:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 12338. [2022-12-14 15:31:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12338 states, 9022 states have (on average 1.4997783196630459) internal successors, (13531), 9026 states have internal predecessors, (13531), 3287 states have call successors, (3287), 28 states have call predecessors, (3287), 28 states have return successors, (3286), 3285 states have call predecessors, (3286), 3286 states have call successors, (3286) [2022-12-14 15:31:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12338 states to 12338 states and 20104 transitions. [2022-12-14 15:31:54,109 INFO L78 Accepts]: Start accepts. Automaton has 12338 states and 20104 transitions. Word has length 94 [2022-12-14 15:31:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:54,110 INFO L495 AbstractCegarLoop]: Abstraction has 12338 states and 20104 transitions. [2022-12-14 15:31:54,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 12338 states and 20104 transitions. [2022-12-14 15:31:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 15:31:54,159 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:54,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:54,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 15:31:54,160 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:54,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2013600897, now seen corresponding path program 1 times [2022-12-14 15:31:54,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512495671] [2022-12-14 15:31:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:54,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:54,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:54,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512495671] [2022-12-14 15:31:54,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512495671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:54,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:54,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249380840] [2022-12-14 15:31:54,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:54,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:54,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:54,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:54,237 INFO L87 Difference]: Start difference. First operand 12338 states and 20104 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:55,305 INFO L93 Difference]: Finished difference Result 32619 states and 53498 transitions. [2022-12-14 15:31:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:55,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2022-12-14 15:31:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:55,383 INFO L225 Difference]: With dead ends: 32619 [2022-12-14 15:31:55,383 INFO L226 Difference]: Without dead ends: 21855 [2022-12-14 15:31:55,408 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 [2022-12-14 15:31:55,409 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 43 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:55,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 530 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21855 states. [2022-12-14 15:31:56,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21855 to 21850. [2022-12-14 15:31:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21850 states, 16084 states have (on average 1.4924148221835365) internal successors, (24004), 16088 states have internal predecessors, (24004), 5737 states have call successors, (5737), 28 states have call predecessors, (5737), 28 states have return successors, (5736), 5735 states have call predecessors, (5736), 5736 states have call successors, (5736) [2022-12-14 15:31:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21850 states to 21850 states and 35477 transitions. [2022-12-14 15:31:56,451 INFO L78 Accepts]: Start accepts. Automaton has 21850 states and 35477 transitions. Word has length 95 [2022-12-14 15:31:56,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:31:56,451 INFO L495 AbstractCegarLoop]: Abstraction has 21850 states and 35477 transitions. [2022-12-14 15:31:56,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:56,451 INFO L276 IsEmpty]: Start isEmpty. Operand 21850 states and 35477 transitions. [2022-12-14 15:31:56,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 15:31:56,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:31:56,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:31:56,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 15:31:56,477 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:31:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:31:56,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1187843532, now seen corresponding path program 1 times [2022-12-14 15:31:56,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:31:56,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764323309] [2022-12-14 15:31:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:31:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:31:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:31:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:31:56,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:31:56,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764323309] [2022-12-14 15:31:56,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764323309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:31:56,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:31:56,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:31:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405148715] [2022-12-14 15:31:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:31:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:31:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:31:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:31:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:31:56,583 INFO L87 Difference]: Start difference. First operand 21850 states and 35477 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:31:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:31:58,626 INFO L93 Difference]: Finished difference Result 59306 states and 96750 transitions. [2022-12-14 15:31:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:31:58,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 96 [2022-12-14 15:31:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:31:58,735 INFO L225 Difference]: With dead ends: 59306 [2022-12-14 15:31:58,735 INFO L226 Difference]: Without dead ends: 39625 [2022-12-14 15:31:58,772 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 [2022-12-14 15:31:58,773 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 41 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:31:58,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 530 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:31:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39625 states. [2022-12-14 15:32:00,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39625 to 39620. [2022-12-14 15:32:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39620 states, 29341 states have (on average 1.4818854163116457) internal successors, (43480), 29345 states have internal predecessors, (43480), 10250 states have call successors, (10250), 28 states have call predecessors, (10250), 28 states have return successors, (10249), 10248 states have call predecessors, (10249), 10249 states have call successors, (10249) [2022-12-14 15:32:00,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39620 states to 39620 states and 63979 transitions. [2022-12-14 15:32:00,631 INFO L78 Accepts]: Start accepts. Automaton has 39620 states and 63979 transitions. Word has length 96 [2022-12-14 15:32:00,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:32:00,631 INFO L495 AbstractCegarLoop]: Abstraction has 39620 states and 63979 transitions. [2022-12-14 15:32:00,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:32:00,631 INFO L276 IsEmpty]: Start isEmpty. Operand 39620 states and 63979 transitions. [2022-12-14 15:32:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-14 15:32:00,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:32:00,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:32:00,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 15:32:00,652 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:32:00,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:32:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash 814158527, now seen corresponding path program 1 times [2022-12-14 15:32:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:32:00,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371449855] [2022-12-14 15:32:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:32:00,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:32:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:32:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:32:00,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:32:00,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371449855] [2022-12-14 15:32:00,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371449855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:32:00,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:32:00,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:32:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847677532] [2022-12-14 15:32:00,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:32:00,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:32:00,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:32:00,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:32:00,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:32:00,701 INFO L87 Difference]: Start difference. First operand 39620 states and 63979 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:32:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:32:03,887 INFO L93 Difference]: Finished difference Result 73204 states and 118385 transitions. [2022-12-14 15:32:03,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:32:03,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2022-12-14 15:32:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:32:04,088 INFO L225 Difference]: With dead ends: 73204 [2022-12-14 15:32:04,088 INFO L226 Difference]: Without dead ends: 73068 [2022-12-14 15:32:04,107 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 [2022-12-14 15:32:04,107 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 39 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:32:04,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 532 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:32:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73068 states. [2022-12-14 15:32:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73068 to 73063. [2022-12-14 15:32:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73063 states, 54416 states have (on average 1.4679873566598058) internal successors, (79882), 54420 states have internal predecessors, (79882), 18618 states have call successors, (18618), 28 states have call predecessors, (18618), 28 states have return successors, (18617), 18616 states have call predecessors, (18617), 18617 states have call successors, (18617) [2022-12-14 15:32:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73063 states to 73063 states and 117117 transitions. [2022-12-14 15:32:08,336 INFO L78 Accepts]: Start accepts. Automaton has 73063 states and 117117 transitions. Word has length 97 [2022-12-14 15:32:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:32:08,336 INFO L495 AbstractCegarLoop]: Abstraction has 73063 states and 117117 transitions. [2022-12-14 15:32:08,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-14 15:32:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 73063 states and 117117 transitions. [2022-12-14 15:32:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 15:32:08,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:32:08,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:32:08,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 15:32:08,366 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:32:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:32:08,367 INFO L85 PathProgramCache]: Analyzing trace with hash 34517069, now seen corresponding path program 1 times [2022-12-14 15:32:08,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:32:08,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301591405] [2022-12-14 15:32:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:32:08,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:32:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:32:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 15:32:09,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:32:09,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301591405] [2022-12-14 15:32:09,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301591405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:32:09,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:32:09,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 15:32:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515295441] [2022-12-14 15:32:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:32:09,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 15:32:09,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:32:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 15:32:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-12-14 15:32:09,425 INFO L87 Difference]: Start difference. First operand 73063 states and 117117 transitions. Second operand has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 15:32:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:32:14,325 INFO L93 Difference]: Finished difference Result 73263 states and 117420 transitions. [2022-12-14 15:32:14,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 15:32:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 98 [2022-12-14 15:32:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:32:14,533 INFO L225 Difference]: With dead ends: 73263 [2022-12-14 15:32:14,533 INFO L226 Difference]: Without dead ends: 73259 [2022-12-14 15:32:14,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 15:32:14,559 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 601 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 15:32:14,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 3919 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 15:32:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73259 states. [2022-12-14 15:32:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73259 to 73155. [2022-12-14 15:32:18,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73155 states, 54466 states have (on average 1.4677413432232953) internal successors, (79942), 54473 states have internal predecessors, (79942), 18656 states have call successors, (18656), 33 states have call predecessors, (18656), 32 states have return successors, (18653), 18652 states have call predecessors, (18653), 18653 states have call successors, (18653) [2022-12-14 15:32:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73155 states to 73155 states and 117251 transitions. [2022-12-14 15:32:18,986 INFO L78 Accepts]: Start accepts. Automaton has 73155 states and 117251 transitions. Word has length 98 [2022-12-14 15:32:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:32:18,986 INFO L495 AbstractCegarLoop]: Abstraction has 73155 states and 117251 transitions. [2022-12-14 15:32:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-14 15:32:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 73155 states and 117251 transitions. [2022-12-14 15:32:19,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-14 15:32:19,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:32:19,122 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:32:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 15:32:19,122 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:32:19,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:32:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1093558153, now seen corresponding path program 1 times [2022-12-14 15:32:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:32:19,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014478257] [2022-12-14 15:32:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:32:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:32:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:32:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-14 15:32:19,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:32:19,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014478257] [2022-12-14 15:32:19,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014478257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:32:19,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:32:19,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 15:32:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988814690] [2022-12-14 15:32:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:32:19,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 15:32:19,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:32:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 15:32:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 15:32:19,369 INFO L87 Difference]: Start difference. First operand 73155 states and 117251 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-14 15:32:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:32:23,547 INFO L93 Difference]: Finished difference Result 73399 states and 117554 transitions. [2022-12-14 15:32:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 15:32:23,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 160 [2022-12-14 15:32:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:32:23,780 INFO L225 Difference]: With dead ends: 73399 [2022-12-14 15:32:23,780 INFO L226 Difference]: Without dead ends: 73270 [2022-12-14 15:32:23,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 15:32:23,807 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 265 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 15:32:23,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 488 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 15:32:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73270 states. [2022-12-14 15:32:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73270 to 73263. [2022-12-14 15:32:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73263 states, 54524 states have (on average 1.4674088474800089) internal successors, (80009), 54535 states have internal predecessors, (80009), 18688 states have call successors, (18688), 50 states have call predecessors, (18688), 50 states have return successors, (18687), 18683 states have call predecessors, (18687), 18685 states have call successors, (18687) [2022-12-14 15:32:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73263 states to 73263 states and 117384 transitions. [2022-12-14 15:32:28,178 INFO L78 Accepts]: Start accepts. Automaton has 73263 states and 117384 transitions. Word has length 160 [2022-12-14 15:32:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:32:28,179 INFO L495 AbstractCegarLoop]: Abstraction has 73263 states and 117384 transitions. [2022-12-14 15:32:28,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 4 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-12-14 15:32:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 73263 states and 117384 transitions. [2022-12-14 15:32:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-14 15:32:28,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:32:28,364 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:32:28,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 15:32:28,365 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:32:28,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:32:28,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1135277702, now seen corresponding path program 1 times [2022-12-14 15:32:28,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:32:28,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236410450] [2022-12-14 15:32:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:32:28,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:32:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:32:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 15:32:29,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:32:29,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236410450] [2022-12-14 15:32:29,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236410450] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:32:29,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107909376] [2022-12-14 15:32:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:32:29,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:32:29,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:32:29,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:32:29,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 15:32:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:32:29,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 15:32:29,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:32:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 15:32:30,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:32:30,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107909376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:32:30,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 15:32:30,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [22] total 24 [2022-12-14 15:32:30,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858232058] [2022-12-14 15:32:30,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:32:30,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:32:30,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:32:30,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:32:30,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2022-12-14 15:32:30,140 INFO L87 Difference]: Start difference. First operand 73263 states and 117384 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-12-14 15:32:36,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:32:36,300 INFO L93 Difference]: Finished difference Result 108347 states and 173422 transitions. [2022-12-14 15:32:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 15:32:36,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 196 [2022-12-14 15:32:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:32:36,594 INFO L225 Difference]: With dead ends: 108347 [2022-12-14 15:32:36,594 INFO L226 Difference]: Without dead ends: 107993 [2022-12-14 15:32:36,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2022-12-14 15:32:36,620 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 160 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 15:32:36,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 664 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 15:32:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107993 states. [2022-12-14 15:32:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107993 to 105240. [2022-12-14 15:32:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105240 states, 78600 states have (on average 1.4496055979643765) internal successors, (113939), 78611 states have internal predecessors, (113939), 26581 states have call successors, (26581), 58 states have call predecessors, (26581), 58 states have return successors, (26580), 26576 states have call predecessors, (26580), 26578 states have call successors, (26580) [2022-12-14 15:32:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105240 states to 105240 states and 167100 transitions. [2022-12-14 15:32:43,782 INFO L78 Accepts]: Start accepts. Automaton has 105240 states and 167100 transitions. Word has length 196 [2022-12-14 15:32:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:32:43,783 INFO L495 AbstractCegarLoop]: Abstraction has 105240 states and 167100 transitions. [2022-12-14 15:32:43,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-12-14 15:32:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 105240 states and 167100 transitions. [2022-12-14 15:32:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-12-14 15:32:44,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:32:44,127 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:32:44,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 15:32:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 15:32:44,329 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:32:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:32:44,331 INFO L85 PathProgramCache]: Analyzing trace with hash 125513756, now seen corresponding path program 1 times [2022-12-14 15:32:44,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:32:44,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442218107] [2022-12-14 15:32:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:32:44,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:32:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:32:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-14 15:32:44,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:32:44,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442218107] [2022-12-14 15:32:44,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442218107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:32:44,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:32:44,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 15:32:44,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722633723] [2022-12-14 15:32:44,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:32:44,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 15:32:44,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 15:32:44,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 15:32:44,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 15:32:44,442 INFO L87 Difference]: Start difference. First operand 105240 states and 167100 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-12-14 15:32:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:32:50,863 INFO L93 Difference]: Finished difference Result 208208 states and 330861 transitions. [2022-12-14 15:32:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 15:32:50,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 205 [2022-12-14 15:32:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:32:51,171 INFO L225 Difference]: With dead ends: 208208 [2022-12-14 15:32:51,171 INFO L226 Difference]: Without dead ends: 105245 [2022-12-14 15:32:51,311 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 [2022-12-14 15:32:51,311 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 47 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:32:51,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 609 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:32:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105245 states. [2022-12-14 15:32:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105245 to 105240. [2022-12-14 15:32:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105240 states, 78600 states have (on average 1.430114503816794) internal successors, (112407), 78611 states have internal predecessors, (112407), 26581 states have call successors, (26581), 58 states have call predecessors, (26581), 58 states have return successors, (26580), 26576 states have call predecessors, (26580), 26578 states have call successors, (26580) [2022-12-14 15:32:59,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105240 states to 105240 states and 165568 transitions. [2022-12-14 15:32:59,187 INFO L78 Accepts]: Start accepts. Automaton has 105240 states and 165568 transitions. Word has length 205 [2022-12-14 15:32:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:32:59,188 INFO L495 AbstractCegarLoop]: Abstraction has 105240 states and 165568 transitions. [2022-12-14 15:32:59,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-12-14 15:32:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 105240 states and 165568 transitions. [2022-12-14 15:32:59,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-12-14 15:32:59,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:32:59,475 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 15:32:59,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 15:32:59,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:32:59,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:32:59,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1098926553, now seen corresponding path program 1 times [2022-12-14 15:32:59,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:32:59,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520583628] [2022-12-14 15:32:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:32:59,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:32:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 15:33:00,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 15:33:00,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520583628] [2022-12-14 15:33:00,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520583628] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 15:33:00,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659824131] [2022-12-14 15:33:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:33:00,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:33:00,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:33:00,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:33:00,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80bf37c3-f20f-4119-87d6-cdffa6ba0593/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 15:33:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:33:00,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 216 conjunts are in the unsatisfiable core [2022-12-14 15:33:00,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:33:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 44 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 15:33:04,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:33:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-14 15:33:11,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659824131] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:33:11,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1653166668] [2022-12-14 15:33:11,970 INFO L159 IcfgInterpreter]: Started Sifa with 136 locations of interest [2022-12-14 15:33:11,970 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 15:33:11,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 15:33:11,971 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 15:33:11,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 15:34:32,692 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-12-14 15:34:32,977 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 477 for LOIs [2022-12-14 15:35:29,121 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 15:35:29,408 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 224 for LOIs [2022-12-14 15:35:31,888 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 250 for LOIs [2022-12-14 15:36:33,640 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailEncryptionKey with input of size 211 for LOIs [2022-12-14 15:36:33,668 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 211 for LOIs [2022-12-14 15:36:34,233 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 391 for LOIs [2022-12-14 15:36:34,658 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 214 for LOIs [2022-12-14 15:36:34,710 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 211 for LOIs [2022-12-14 15:36:34,738 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 211 for LOIs [2022-12-14 15:36:34,766 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 214 for LOIs [2022-12-14 15:36:34,797 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 215 for LOIs [2022-12-14 15:36:34,829 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 211 for LOIs [2022-12-14 15:36:34,856 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 211 for LOIs [2022-12-14 15:36:34,884 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailSignKey with input of size 211 for LOIs [2022-12-14 15:36:34,912 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 210 for LOIs [2022-12-14 15:36:34,943 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 15:37:27,551 WARN L233 SmtUtils]: Spent 12.35s on a formula simplification. DAG size of input: 600 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:37:38,506 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 601 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:37:52,712 WARN L233 SmtUtils]: Spent 12.97s on a formula simplification. DAG size of input: 602 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:38:04,430 WARN L233 SmtUtils]: Spent 10.40s on a formula simplification. DAG size of input: 600 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:38:17,702 WARN L233 SmtUtils]: Spent 11.87s on a formula simplification. DAG size of input: 599 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:38:30,765 WARN L233 SmtUtils]: Spent 11.64s on a formula simplification. DAG size of input: 597 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:38:44,587 WARN L233 SmtUtils]: Spent 12.47s on a formula simplification. DAG size of input: 596 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:38:58,875 WARN L233 SmtUtils]: Spent 12.92s on a formula simplification. DAG size of input: 594 DAG size of output: 471 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:39:10,884 WARN L233 SmtUtils]: Spent 10.70s on a formula simplification. DAG size of input: 593 DAG size of output: 471 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:39:24,073 WARN L233 SmtUtils]: Spent 11.83s on a formula simplification. DAG size of input: 591 DAG size of output: 469 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:39:32,835 WARN L233 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 590 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:40:21,877 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 584 DAG size of output: 451 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:40:28,843 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 580 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:40:42,043 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 580 DAG size of output: 424 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:41:06,170 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 535 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)