./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f7b52dfa978a30892cebb35c28a84cc12db47d20591a31b18d58060a0678455 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:52:35,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:52:35,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:52:35,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:52:35,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:52:35,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:52:35,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:52:35,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:52:35,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:52:35,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:52:35,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:52:35,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:52:35,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:52:35,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:52:35,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:52:35,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:52:35,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:52:35,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:52:35,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:52:35,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:52:35,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:52:35,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:52:35,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:52:35,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:52:35,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:52:35,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:52:35,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:52:35,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:52:35,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:52:35,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:52:35,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:52:35,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:52:35,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:52:35,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:52:35,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:52:35,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:52:35,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:52:35,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:52:35,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:52:35,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:52:35,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:52:35,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:52:35,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:52:35,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:52:35,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:52:35,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:52:35,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:52:35,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:52:35,892 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:52:35,893 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:52:35,893 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:52:35,893 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:52:35,893 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:52:35,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:52:35,894 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:52:35,894 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:52:35,894 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:52:35,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:52:35,895 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:52:35,895 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:52:35,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:52:35,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:52:35,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:52:35,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:52:35,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:52:35,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:52:35,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:52:35,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:52:35,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:52:35,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:52:35,898 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:52:35,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:52:35,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:52:35,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:52:35,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:52:35,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:52:35,899 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:52:35,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:52:35,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:52:35,900 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:52:35,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:52:35,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:52:35,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:52:35,900 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_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f7b52dfa978a30892cebb35c28a84cc12db47d20591a31b18d58060a0678455 [2022-11-19 07:52:36,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:52:36,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:52:36,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:52:36,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:52:36,233 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:52:36,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec7_product34.cil.c [2022-11-19 07:52:36,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/data/f87457ac8/1a38b70d067d49c9a9176b3c70625f07/FLAG3add620fc [2022-11-19 07:52:36,865 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:52:36,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/sv-benchmarks/c/product-lines/email_spec7_product34.cil.c [2022-11-19 07:52:36,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/data/f87457ac8/1a38b70d067d49c9a9176b3c70625f07/FLAG3add620fc [2022-11-19 07:52:37,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/data/f87457ac8/1a38b70d067d49c9a9176b3c70625f07 [2022-11-19 07:52:37,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:52:37,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:52:37,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:52:37,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:52:37,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:52:37,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8c0b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:37, skipping insertion in model container [2022-11-19 07:52:37,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:52:37" (1/1) ... [2022-11-19 07:52:37,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:52:37,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:52:37,659 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/sv-benchmarks/c/product-lines/email_spec7_product34.cil.c[10988,11001] [2022-11-19 07:52:37,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:52:37,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:52:38,021 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/sv-benchmarks/c/product-lines/email_spec7_product34.cil.c[10988,11001] [2022-11-19 07:52:38,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:52:38,143 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:52:38,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38 WrapperNode [2022-11-19 07:52:38,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:52:38,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:52:38,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:52:38,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:52:38,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,301 INFO L138 Inliner]: procedures = 134, calls = 234, calls flagged for inlining = 62, calls inlined = 59, statements flattened = 1083 [2022-11-19 07:52:38,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:52:38,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:52:38,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:52:38,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:52:38,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:52:38,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:52:38,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:52:38,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:52:38,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (1/1) ... [2022-11-19 07:52:38,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:52:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:38,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:52:38,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:52:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:52:38,503 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:52:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 07:52:38,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 07:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:52:38,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 07:52:38,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 07:52:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:52:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:52:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:52:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:52:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:52:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:52:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:52:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:52:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:52:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:52:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:52:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:52:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:52:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:52:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:52:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:52:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:52:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:52:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:52:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:52:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:52:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 07:52:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 07:52:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:52:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:52:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:52:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:52:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:52:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:52:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-19 07:52:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-19 07:52:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:52:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:52:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:52:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:52:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:52:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:52:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:52:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:52:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:52:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:52:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:52:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:52:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:52:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 07:52:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 07:52:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:52:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:52:38,763 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:52:38,766 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:52:40,062 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:52:40,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:52:40,748 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:52:40,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:40 BoogieIcfgContainer [2022-11-19 07:52:40,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:52:40,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:52:40,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:52:40,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:52:40,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:52:37" (1/3) ... [2022-11-19 07:52:40,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c3d560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:52:40, skipping insertion in model container [2022-11-19 07:52:40,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:38" (2/3) ... [2022-11-19 07:52:40,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c3d560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:52:40, skipping insertion in model container [2022-11-19 07:52:40,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:40" (3/3) ... [2022-11-19 07:52:40,763 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product34.cil.c [2022-11-19 07:52:40,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:52:40,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:52:40,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:52:40,888 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;@2337387c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:52:40,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:52:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 128 states have (on average 1.2890625) internal successors, (165), 133 states have internal predecessors, (165), 70 states have call successors, (70), 28 states have call predecessors, (70), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-19 07:52:40,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-19 07:52:40,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:40,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:40,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:40,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1251544555, now seen corresponding path program 1 times [2022-11-19 07:52:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:40,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443996368] [2022-11-19 07:52:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:40,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:52:41,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:41,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443996368] [2022-11-19 07:52:41,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443996368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:41,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:41,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:52:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563841190] [2022-11-19 07:52:41,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:41,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:52:41,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:52:41,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:52:41,505 INFO L87 Difference]: Start difference. First operand has 228 states, 128 states have (on average 1.2890625) internal successors, (165), 133 states have internal predecessors, (165), 70 states have call successors, (70), 28 states have call predecessors, (70), 28 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:52:41,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:41,749 INFO L93 Difference]: Finished difference Result 364 states and 481 transitions. [2022-11-19 07:52:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:52:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2022-11-19 07:52:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:41,764 INFO L225 Difference]: With dead ends: 364 [2022-11-19 07:52:41,769 INFO L226 Difference]: Without dead ends: 225 [2022-11-19 07:52:41,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:52:41,777 INFO L413 NwaCegarLoop]: 258 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, 258 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 [2022-11-19 07:52:41,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 258 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:52:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-19 07:52:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-19 07:52:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 126 states have (on average 1.2619047619047619) internal successors, (159), 130 states have internal predecessors, (159), 70 states have call successors, (70), 28 states have call predecessors, (70), 28 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-19 07:52:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 298 transitions. [2022-11-19 07:52:41,838 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 298 transitions. Word has length 84 [2022-11-19 07:52:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:41,840 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 298 transitions. [2022-11-19 07:52:41,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:52:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 298 transitions. [2022-11-19 07:52:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 07:52:41,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:41,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:52:41,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:41,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1778264047, now seen corresponding path program 1 times [2022-11-19 07:52:41,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:41,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913921858] [2022-11-19 07:52:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:41,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:52:42,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:42,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913921858] [2022-11-19 07:52:42,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913921858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:42,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:42,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:42,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696627088] [2022-11-19 07:52:42,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:42,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:42,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:42,209 INFO L87 Difference]: Start difference. First operand 225 states and 298 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:52:42,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:42,421 INFO L93 Difference]: Finished difference Result 360 states and 466 transitions. [2022-11-19 07:52:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:42,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 96 [2022-11-19 07:52:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:42,432 INFO L225 Difference]: With dead ends: 360 [2022-11-19 07:52:42,432 INFO L226 Difference]: Without dead ends: 227 [2022-11-19 07:52:42,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:42,442 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 509 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 [2022-11-19 07:52:42,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 509 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:52:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-19 07:52:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-19 07:52:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 128 states have (on average 1.2578125) internal successors, (161), 132 states have internal predecessors, (161), 70 states have call successors, (70), 28 states have call predecessors, (70), 28 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-19 07:52:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2022-11-19 07:52:42,506 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 96 [2022-11-19 07:52:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:42,507 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2022-11-19 07:52:42,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:52:42,508 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2022-11-19 07:52:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 07:52:42,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:42,511 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:42,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:52:42,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash 150862224, now seen corresponding path program 1 times [2022-11-19 07:52:42,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:42,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48473122] [2022-11-19 07:52:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:52:42,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:42,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48473122] [2022-11-19 07:52:42,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48473122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:42,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:42,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:42,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824802963] [2022-11-19 07:52:42,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:42,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:42,682 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:52:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:42,851 INFO L93 Difference]: Finished difference Result 489 states and 667 transitions. [2022-11-19 07:52:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:42,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 90 [2022-11-19 07:52:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:42,858 INFO L225 Difference]: With dead ends: 489 [2022-11-19 07:52:42,858 INFO L226 Difference]: Without dead ends: 280 [2022-11-19 07:52:42,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:42,868 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 59 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 526 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 [2022-11-19 07:52:42,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 526 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:52:42,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-19 07:52:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 275. [2022-11-19 07:52:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 162 states have (on average 1.3333333333333333) internal successors, (216), 166 states have internal predecessors, (216), 84 states have call successors, (84), 28 states have call predecessors, (84), 28 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-19 07:52:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 383 transitions. [2022-11-19 07:52:42,904 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 383 transitions. Word has length 90 [2022-11-19 07:52:42,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:42,905 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 383 transitions. [2022-11-19 07:52:42,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:52:42,905 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 383 transitions. [2022-11-19 07:52:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 07:52:42,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:42,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:42,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:52:42,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:42,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1084309368, now seen corresponding path program 1 times [2022-11-19 07:52:42,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:42,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293374132] [2022-11-19 07:52:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:42,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:52:43,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293374132] [2022-11-19 07:52:43,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293374132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:52:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340896755] [2022-11-19 07:52:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:43,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:52:43,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:43,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:52:43,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:52:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:43,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:52:43,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:52:43,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:52:43,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340896755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [924395334] [2022-11-19 07:52:43,851 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-19 07:52:43,856 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:52:43,860 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:52:43,866 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:52:43,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:53:26,325 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-19 07:53:26,630 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-11-19 07:53:28,741 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 07:53:29,259 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2022-11-19 07:53:32,734 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 226 for LOIs [2022-11-19 07:53:32,770 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 234 for LOIs [2022-11-19 07:53:32,809 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-19 07:53:32,848 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-11-19 07:53:32,896 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:53:59,401 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:05,077 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 464 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:10,827 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 476 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:17,041 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 486 DAG size of output: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:28,063 WARN L233 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 506 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:35,944 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 508 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:47,795 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 566 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:53,467 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 565 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:54:59,146 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 561 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:55:04,890 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:55:37,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [924395334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:37,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:55:37,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [4, 4, 4] total 46 [2022-11-19 07:55:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447046246] [2022-11-19 07:55:37,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:37,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-19 07:55:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:55:37,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-19 07:55:37,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1949, Unknown=0, NotChecked=0, Total=2070 [2022-11-19 07:55:37,017 INFO L87 Difference]: Start difference. First operand 275 states and 383 transitions. Second operand has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-19 07:55:53,010 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 533 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:56:24,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:56:24,632 INFO L93 Difference]: Finished difference Result 620 states and 897 transitions. [2022-11-19 07:56:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-19 07:56:24,633 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) Word has length 102 [2022-11-19 07:56:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:56:24,636 INFO L225 Difference]: With dead ends: 620 [2022-11-19 07:56:24,636 INFO L226 Difference]: Without dead ends: 363 [2022-11-19 07:56:24,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 144.4s TimeCoverageRelationStatistics Valid=161, Invalid=2491, Unknown=0, NotChecked=0, Total=2652 [2022-11-19 07:56:24,639 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 143 mSDsluCounter, 5296 mSDsCounter, 0 mSdLazyCounter, 6032 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 5573 SdHoareTripleChecker+Invalid, 6053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 6032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:56:24,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 5573 Invalid, 6053 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21 Valid, 6032 Invalid, 0 Unknown, 0 Unchecked, 26.8s Time] [2022-11-19 07:56:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-19 07:56:24,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 322. [2022-11-19 07:56:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 198 states have (on average 1.3383838383838385) internal successors, (265), 202 states have internal predecessors, (265), 90 states have call successors, (90), 35 states have call predecessors, (90), 33 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-19 07:56:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 444 transitions. [2022-11-19 07:56:24,762 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 444 transitions. Word has length 102 [2022-11-19 07:56:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:56:24,763 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 444 transitions. [2022-11-19 07:56:24,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 25 states have internal predecessors, (49), 13 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (20), 11 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-19 07:56:24,763 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 444 transitions. [2022-11-19 07:56:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 07:56:24,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:56:24,766 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:56:24,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:56:24,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:56:24,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:56:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:56:24,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1914064430, now seen corresponding path program 1 times [2022-11-19 07:56:24,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:56:24,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489259503] [2022-11-19 07:56:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:56:24,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:56:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:56:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:56:25,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:56:25,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489259503] [2022-11-19 07:56:25,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489259503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:56:25,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682747503] [2022-11-19 07:56:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:56:25,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:56:25,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:56:25,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:56:25,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:56:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:56:25,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:56:25,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:56:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:56:25,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:56:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:56:25,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682747503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:56:25,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1180326473] [2022-11-19 07:56:25,598 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-19 07:56:25,598 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:56:25,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:56:25,599 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:56:25,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:57:00,239 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:57:00,559 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-11-19 07:57:02,492 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-19 07:57:02,530 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-19 07:57:02,846 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 264 for LOIs [2022-11-19 07:57:06,105 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 274 for LOIs [2022-11-19 07:57:23,913 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-11-19 07:57:24,618 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2022-11-19 07:57:24,660 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 455 for LOIs [2022-11-19 07:57:25,297 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2022-11-19 07:57:25,366 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 434 for LOIs [2022-11-19 07:57:25,982 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-19 07:57:27,859 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-11-19 07:57:27,909 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:57:45,163 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:50,506 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:01,421 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:07,033 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 464 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:12,733 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 476 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:18,888 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 486 DAG size of output: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:29,888 WARN L233 SmtUtils]: Spent 7.04s on a formula simplification. DAG size of input: 506 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:37,718 WARN L233 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 508 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:49,647 WARN L233 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 566 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:55,348 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 565 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:01,019 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 561 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:06,816 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:16,343 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 476 DAG size of output: 276 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:40,388 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 455 DAG size of output: 266 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:46,592 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 481 DAG size of output: 282 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:11,838 WARN L233 SmtUtils]: Spent 11.75s on a formula simplification. DAG size of input: 434 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:24,405 WARN L233 SmtUtils]: Spent 11.87s on a formula simplification. DAG size of input: 453 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:49,866 WARN L233 SmtUtils]: Spent 14.32s on a formula simplification. DAG size of input: 601 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:58,210 WARN L233 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 598 DAG size of output: 391 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:58,217 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6154#(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) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= |outgoing__wrappee__Encrypt_~receiver~0#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_email_encryptionKey1~0 0) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~client#1|) (<= |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) (<= |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~37#1| 2147483647) (= |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_~tmp~8#1| 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing__wrappee__Encrypt_#in~client#1| 1) (<= 2 |outgoing__wrappee__Encrypt_incoming_#in~client#1|) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~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_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) (<= 2 |outgoing__wrappee__Encrypt_verify_#in~client#1|) (= ~__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_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= 1 |outgoing__wrappee__Encrypt_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= 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) (= ~__ste_client_name1~0.offset 0) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_~retValue_acc~37#1| 2147483648)) (= ~head~0.offset 0) (<= |outgoing__wrappee__Encrypt_incoming_~msg#1| 1) (= ~__ste_client_name0~0.offset 0) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= 1 |outgoing__wrappee__Encrypt_mail_~client#1|) (<= 1 |outgoing__wrappee__Encrypt_incoming_~msg#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) (<= |outgoing__wrappee__Encrypt_incoming_~client#1| 2) (= |outgoing__wrappee__Encrypt_verify_~__utac__ad__arg1~0#1| |outgoing__wrappee__Encrypt_verify_~msg#1|) (<= |outgoing__wrappee__Encrypt_incoming_#in~msg#1| 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__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_forwardReceiver2~0 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__EncryptVerify_spec__1_~msg#1| |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_#in~msg#1|) (= |outgoing__wrappee__Encrypt_incoming_~privkey~0#1| 0) (<= 0 (+ |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~15#1| 2147483648)) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__Encrypt_~tmp~16#1| 2) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= |outgoing__wrappee__Encrypt_~client#1| 1) (<= 1 |outgoing__wrappee__Encrypt_#in~client#1|) (= ~__ste_email_id0~0 0) (= ~__ste_Client_Keyring2_User1~0 0) (= |outgoing__wrappee__Encrypt_verify_~client#1| |outgoing__wrappee__Encrypt_verify_#in~client#1|) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~client#1| |outgoing__wrappee__Encrypt_incoming_~client#1|) (<= 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) (<= 2 |outgoing__wrappee__Encrypt_mail_~tmp~14#1|) (<= ~__ste_email_isSigned1~0 0) (<= 0 |outgoing__wrappee__Encrypt_~tmp___0~5#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= |outgoing__wrappee__Encrypt_getClientId_#in~handle#1| 1) (<= 1 |outgoing__wrappee__Encrypt_getClientId_#in~handle#1|) (<= |outgoing__wrappee__Encrypt_~tmp___0~5#1| 0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 1 |outgoing__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__Encrypt_#in~msg#1| 1) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (= ~__SELECTED_FEATURE_Base~0 0) (<= 2 |outgoing__wrappee__Encrypt_~receiver~0#1|) (<= |outgoing__wrappee__Encrypt_mail_~tmp~14#1| 2) (= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~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) (= ~__ste_client_name2~0.base 0) (<= 1 |outgoing__wrappee__Encrypt_~msg#1|) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (<= 1 |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_~msg#1|) (= ~__ste_email_subject1~0.base 0) (<= |old(~queue_empty~0)| 1) (<= |outgoing__wrappee__Encrypt_incoming_#in~client#1| 2) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~tmp~15#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__Encrypt_getClientId_~handle#1|) (= ~__ste_Client_Keyring2_User2~0 0) (<= 2 |outgoing__wrappee__Encrypt_~tmp~16#1|) (= ~head~0.base 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1| 1) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__Encrypt_verify_~msg#1| 1) (= |#NULL.offset| 0) (<= |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= 1 |outgoing__wrappee__Encrypt_outgoing__wrappee__Keys_~client#1|) (<= 0 ~__ste_email_isSigned0~0) (<= 1 |outgoing__wrappee__Encrypt_mail_#in~client#1|) (= ~__ste_email_subject1~0.offset 0) (= |outgoing__wrappee__Encrypt_verify_~msg#1| |outgoing__wrappee__Encrypt_verify_#in~msg#1|) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= |outgoing__wrappee__Encrypt_mail_#in~client#1| 1) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__Encrypt_incoming_#in~msg#1|) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1| |outgoing__wrappee__Encrypt_verify_#in~msg#1|) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (= |outgoing__wrappee__Encrypt_incoming_~privkey~0#1| |outgoing__wrappee__Encrypt_incoming_~tmp~19#1|) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= |outgoing__wrappee__Encrypt_verify_~client#1| 2) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 (+ |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483648)) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 2 ~__ste_email_to0~0) (= |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1| |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_#in~msg#1|) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (<= 2 |outgoing__wrappee__Encrypt_incoming_~client#1|) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__Encrypt___utac_acc__EncryptVerify_spec__1_#in~msg#1| 1) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing__wrappee__Encrypt_getClientId_#res#1| 2147483647) (<= 1 |outgoing__wrappee__Encrypt_incoming__wrappee__Verify_~msg#1|) (<= ~queued_client~0 0))' at error location [2022-11-19 08:01:58,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:01:58,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:01:58,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-19 08:01:58,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500083299] [2022-11-19 08:01:58,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:01:58,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:01:58,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:58,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:01:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=5032, Unknown=0, NotChecked=0, Total=5256 [2022-11-19 08:01:58,222 INFO L87 Difference]: Start difference. First operand 322 states and 444 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 08:01:58,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:58,799 INFO L93 Difference]: Finished difference Result 805 states and 1174 transitions. [2022-11-19 08:01:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:01:58,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 91 [2022-11-19 08:01:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:58,806 INFO L225 Difference]: With dead ends: 805 [2022-11-19 08:01:58,806 INFO L226 Difference]: Without dead ends: 651 [2022-11-19 08:01:58,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 270.2s TimeCoverageRelationStatistics Valid=224, Invalid=5032, Unknown=0, NotChecked=0, Total=5256 [2022-11-19 08:01:58,809 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 166 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:58,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1168 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:01:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-11-19 08:01:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 632. [2022-11-19 08:01:59,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 429 states have (on average 1.435897435897436) internal successors, (616), 433 states have internal predecessors, (616), 169 states have call successors, (169), 35 states have call predecessors, (169), 33 states have return successors, (168), 165 states have call predecessors, (168), 168 states have call successors, (168) [2022-11-19 08:01:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 953 transitions. [2022-11-19 08:01:59,126 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 953 transitions. Word has length 91 [2022-11-19 08:01:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:59,128 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 953 transitions. [2022-11-19 08:01:59,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-19 08:01:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 953 transitions. [2022-11-19 08:01:59,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-19 08:01:59,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:59,135 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2022-11-19 08:01:59,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 08:01:59,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:59,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1267438452, now seen corresponding path program 1 times [2022-11-19 08:01:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:59,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044708240] [2022-11-19 08:01:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-19 08:01:59,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:59,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044708240] [2022-11-19 08:01:59,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044708240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:59,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:59,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:59,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493671926] [2022-11-19 08:01:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:59,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:59,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:59,447 INFO L87 Difference]: Start difference. First operand 632 states and 953 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 08:02:00,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:00,016 INFO L93 Difference]: Finished difference Result 1451 states and 2233 transitions. [2022-11-19 08:02:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 119 [2022-11-19 08:02:00,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:00,021 INFO L225 Difference]: With dead ends: 1451 [2022-11-19 08:02:00,022 INFO L226 Difference]: Without dead ends: 927 [2022-11-19 08:02:00,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:00,024 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 57 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 530 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 [2022-11-19 08:02:00,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 530 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-11-19 08:02:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 920. [2022-11-19 08:02:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 638 states have (on average 1.4529780564263324) internal successors, (927), 642 states have internal predecessors, (927), 248 states have call successors, (248), 35 states have call predecessors, (248), 33 states have return successors, (247), 244 states have call predecessors, (247), 247 states have call successors, (247) [2022-11-19 08:02:00,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1422 transitions. [2022-11-19 08:02:00,412 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1422 transitions. Word has length 119 [2022-11-19 08:02:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:00,412 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1422 transitions. [2022-11-19 08:02:00,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 08:02:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1422 transitions. [2022-11-19 08:02:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-19 08:02:00,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:00,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:00,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:02:00,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:00,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:00,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1970816624, now seen corresponding path program 1 times [2022-11-19 08:02:00,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:00,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902036034] [2022-11-19 08:02:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:02:01,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:01,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902036034] [2022-11-19 08:02:01,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902036034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:01,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:01,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-19 08:02:01,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780895595] [2022-11-19 08:02:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:01,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 08:02:01,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 08:02:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-19 08:02:01,780 INFO L87 Difference]: Start difference. First operand 920 states and 1422 transitions. Second operand has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-19 08:02:04,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:04,742 INFO L93 Difference]: Finished difference Result 1130 states and 1713 transitions. [2022-11-19 08:02:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 08:02:04,743 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 107 [2022-11-19 08:02:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:04,749 INFO L225 Difference]: With dead ends: 1130 [2022-11-19 08:02:04,749 INFO L226 Difference]: Without dead ends: 1126 [2022-11-19 08:02:04,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 08:02:04,752 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 604 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:04,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 3224 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 08:02:04,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-19 08:02:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1118. [2022-11-19 08:02:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 748 states have (on average 1.411764705882353) internal successors, (1056), 755 states have internal predecessors, (1056), 317 states have call successors, (317), 54 states have call predecessors, (317), 52 states have return successors, (320), 310 states have call predecessors, (320), 312 states have call successors, (320) [2022-11-19 08:02:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1693 transitions. [2022-11-19 08:02:05,191 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1693 transitions. Word has length 107 [2022-11-19 08:02:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:05,192 INFO L495 AbstractCegarLoop]: Abstraction has 1118 states and 1693 transitions. [2022-11-19 08:02:05,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-19 08:02:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1693 transitions. [2022-11-19 08:02:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 08:02:05,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:05,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:05,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:02:05,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash -463812703, now seen corresponding path program 1 times [2022-11-19 08:02:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:05,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37493048] [2022-11-19 08:02:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:02:06,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:06,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37493048] [2022-11-19 08:02:06,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37493048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:06,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:06,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 08:02:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282591607] [2022-11-19 08:02:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:06,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 08:02:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 08:02:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-19 08:02:06,029 INFO L87 Difference]: Start difference. First operand 1118 states and 1693 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 10 states have internal predecessors, (65), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-19 08:02:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:08,621 INFO L93 Difference]: Finished difference Result 2036 states and 3035 transitions. [2022-11-19 08:02:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 08:02:08,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 10 states have internal predecessors, (65), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) Word has length 113 [2022-11-19 08:02:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:08,633 INFO L225 Difference]: With dead ends: 2036 [2022-11-19 08:02:08,633 INFO L226 Difference]: Without dead ends: 1905 [2022-11-19 08:02:08,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-11-19 08:02:08,637 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 837 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:08,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 2604 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:02:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2022-11-19 08:02:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1764. [2022-11-19 08:02:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1136 states have (on average 1.392605633802817) internal successors, (1582), 1176 states have internal predecessors, (1582), 530 states have call successors, (530), 100 states have call predecessors, (530), 97 states have return successors, (533), 492 states have call predecessors, (533), 519 states have call successors, (533) [2022-11-19 08:02:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2645 transitions. [2022-11-19 08:02:09,124 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2645 transitions. Word has length 113 [2022-11-19 08:02:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:09,124 INFO L495 AbstractCegarLoop]: Abstraction has 1764 states and 2645 transitions. [2022-11-19 08:02:09,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 10 states have internal predecessors, (65), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-19 08:02:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2645 transitions. [2022-11-19 08:02:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-19 08:02:09,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:09,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:09,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:02:09,131 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:09,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2014008020, now seen corresponding path program 1 times [2022-11-19 08:02:09,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:09,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068622646] [2022-11-19 08:02:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:09,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:02:09,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:09,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068622646] [2022-11-19 08:02:09,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068622646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:09,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:09,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687000315] [2022-11-19 08:02:09,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:09,247 INFO L87 Difference]: Start difference. First operand 1764 states and 2645 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:10,185 INFO L93 Difference]: Finished difference Result 3749 states and 5731 transitions. [2022-11-19 08:02:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 118 [2022-11-19 08:02:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:10,198 INFO L225 Difference]: With dead ends: 3749 [2022-11-19 08:02:10,198 INFO L226 Difference]: Without dead ends: 2307 [2022-11-19 08:02:10,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:10,208 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 52 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 534 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 [2022-11-19 08:02:10,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 534 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2022-11-19 08:02:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2291. [2022-11-19 08:02:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1505 states have (on average 1.429235880398671) internal successors, (2151), 1560 states have internal predecessors, (2151), 688 states have call successors, (688), 100 states have call predecessors, (688), 97 states have return successors, (691), 635 states have call predecessors, (691), 677 states have call successors, (691) [2022-11-19 08:02:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3530 transitions. [2022-11-19 08:02:11,006 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3530 transitions. Word has length 118 [2022-11-19 08:02:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:11,006 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3530 transitions. [2022-11-19 08:02:11,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3530 transitions. [2022-11-19 08:02:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-19 08:02:11,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:11,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:11,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:02:11,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1028661485, now seen corresponding path program 1 times [2022-11-19 08:02:11,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:11,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968436664] [2022-11-19 08:02:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:11,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:02:11,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:11,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968436664] [2022-11-19 08:02:11,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968436664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:11,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:11,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:11,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674396682] [2022-11-19 08:02:11,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:11,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:11,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:11,123 INFO L87 Difference]: Start difference. First operand 2291 states and 3530 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:12,155 INFO L93 Difference]: Finished difference Result 4766 states and 7441 transitions. [2022-11-19 08:02:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:12,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 119 [2022-11-19 08:02:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:12,175 INFO L225 Difference]: With dead ends: 4766 [2022-11-19 08:02:12,175 INFO L226 Difference]: Without dead ends: 2887 [2022-11-19 08:02:12,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:12,185 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 50 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 515 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 [2022-11-19 08:02:12,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 515 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:12,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-11-19 08:02:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2879. [2022-11-19 08:02:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 1931 states have (on average 1.4464008285862247) internal successors, (2793), 1986 states have internal predecessors, (2793), 850 states have call successors, (850), 100 states have call predecessors, (850), 97 states have return successors, (853), 797 states have call predecessors, (853), 839 states have call successors, (853) [2022-11-19 08:02:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 4496 transitions. [2022-11-19 08:02:13,148 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 4496 transitions. Word has length 119 [2022-11-19 08:02:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:13,148 INFO L495 AbstractCegarLoop]: Abstraction has 2879 states and 4496 transitions. [2022-11-19 08:02:13,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 4496 transitions. [2022-11-19 08:02:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 08:02:13,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:13,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:02:13,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1748938587, now seen corresponding path program 1 times [2022-11-19 08:02:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:13,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031405617] [2022-11-19 08:02:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 08:02:13,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:13,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031405617] [2022-11-19 08:02:13,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031405617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:13,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:13,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141099748] [2022-11-19 08:02:13,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:13,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:13,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:13,275 INFO L87 Difference]: Start difference. First operand 2879 states and 4496 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:02:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:14,371 INFO L93 Difference]: Finished difference Result 6141 states and 9721 transitions. [2022-11-19 08:02:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 131 [2022-11-19 08:02:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:14,392 INFO L225 Difference]: With dead ends: 6141 [2022-11-19 08:02:14,393 INFO L226 Difference]: Without dead ends: 3821 [2022-11-19 08:02:14,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:14,403 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 48 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 515 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 [2022-11-19 08:02:14,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 515 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:14,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2022-11-19 08:02:15,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 3813. [2022-11-19 08:02:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 2620 states have (on average 1.4629770992366413) internal successors, (3833), 2675 states have internal predecessors, (3833), 1095 states have call successors, (1095), 100 states have call predecessors, (1095), 97 states have return successors, (1098), 1042 states have call predecessors, (1098), 1084 states have call successors, (1098) [2022-11-19 08:02:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 6026 transitions. [2022-11-19 08:02:15,590 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 6026 transitions. Word has length 131 [2022-11-19 08:02:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:15,590 INFO L495 AbstractCegarLoop]: Abstraction has 3813 states and 6026 transitions. [2022-11-19 08:02:15,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:02:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 6026 transitions. [2022-11-19 08:02:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-19 08:02:15,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:15,612 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:15,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:02:15,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1634196404, now seen corresponding path program 1 times [2022-11-19 08:02:15,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:15,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331310059] [2022-11-19 08:02:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:15,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:02:15,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:15,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331310059] [2022-11-19 08:02:15,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331310059] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:02:15,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55036479] [2022-11-19 08:02:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:15,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:02:15,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:02:15,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:02:15,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:02:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:16,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:02:16,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:02:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:02:16,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:02:16,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55036479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:16,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:02:16,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 08:02:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657411647] [2022-11-19 08:02:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:16,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:16,234 INFO L87 Difference]: Start difference. First operand 3813 states and 6026 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 08:02:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:17,434 INFO L93 Difference]: Finished difference Result 6555 states and 10318 transitions. [2022-11-19 08:02:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 121 [2022-11-19 08:02:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:17,454 INFO L225 Difference]: With dead ends: 6555 [2022-11-19 08:02:17,454 INFO L226 Difference]: Without dead ends: 3726 [2022-11-19 08:02:17,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:02:17,466 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 57 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:17,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 604 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2022-11-19 08:02:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3708. [2022-11-19 08:02:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 2515 states have (on average 1.4512922465208749) internal successors, (3650), 2570 states have internal predecessors, (3650), 1095 states have call successors, (1095), 100 states have call predecessors, (1095), 97 states have return successors, (1098), 1042 states have call predecessors, (1098), 1084 states have call successors, (1098) [2022-11-19 08:02:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 5843 transitions. [2022-11-19 08:02:18,540 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 5843 transitions. Word has length 121 [2022-11-19 08:02:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:18,540 INFO L495 AbstractCegarLoop]: Abstraction has 3708 states and 5843 transitions. [2022-11-19 08:02:18,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 08:02:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 5843 transitions. [2022-11-19 08:02:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-19 08:02:18,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:18,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:18,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:02:18,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adc573c-f36b-4886-81a6-01b8c27a6cfe/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:02:18,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2062511249, now seen corresponding path program 1 times [2022-11-19 08:02:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:18,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171198468] [2022-11-19 08:02:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:02:18,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:18,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171198468] [2022-11-19 08:02:18,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171198468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:18,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:18,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:18,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229925744] [2022-11-19 08:02:18,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:18,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:18,880 INFO L87 Difference]: Start difference. First operand 3708 states and 5843 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:20,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:20,522 INFO L93 Difference]: Finished difference Result 8779 states and 14028 transitions. [2022-11-19 08:02:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 121 [2022-11-19 08:02:20,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:20,557 INFO L225 Difference]: With dead ends: 8779 [2022-11-19 08:02:20,557 INFO L226 Difference]: Without dead ends: 5672 [2022-11-19 08:02:20,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:20,572 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 46 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:20,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 528 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2022-11-19 08:02:21,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 5656. [2022-11-19 08:02:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5656 states, 3902 states have (on average 1.4600205023065096) internal successors, (5697), 3982 states have internal predecessors, (5697), 1656 states have call successors, (1656), 100 states have call predecessors, (1656), 97 states have return successors, (1659), 1578 states have call predecessors, (1659), 1645 states have call successors, (1659) [2022-11-19 08:02:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5656 states to 5656 states and 9012 transitions. [2022-11-19 08:02:21,914 INFO L78 Accepts]: Start accepts. Automaton has 5656 states and 9012 transitions. Word has length 121 [2022-11-19 08:02:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:21,914 INFO L495 AbstractCegarLoop]: Abstraction has 5656 states and 9012 transitions. [2022-11-19 08:02:21,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5656 states and 9012 transitions. [2022-11-19 08:02:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 08:02:21,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:21,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:21,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:02:21,941 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:21,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:21,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1470528823, now seen corresponding path program 1 times [2022-11-19 08:02:21,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:21,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965609837] [2022-11-19 08:02:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:21,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 08:02:22,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:22,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965609837] [2022-11-19 08:02:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965609837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:22,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:22,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79593845] [2022-11-19 08:02:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:22,060 INFO L87 Difference]: Start difference. First operand 5656 states and 9012 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:02:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:23,971 INFO L93 Difference]: Finished difference Result 13785 states and 22240 transitions. [2022-11-19 08:02:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 133 [2022-11-19 08:02:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:24,010 INFO L225 Difference]: With dead ends: 13785 [2022-11-19 08:02:24,011 INFO L226 Difference]: Without dead ends: 9004 [2022-11-19 08:02:24,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:24,028 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 44 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 520 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 [2022-11-19 08:02:24,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 520 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9004 states. [2022-11-19 08:02:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9004 to 8988. [2022-11-19 08:02:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 6299 states have (on average 1.4667407525003968) internal successors, (9239), 6424 states have internal predecessors, (9239), 2591 states have call successors, (2591), 100 states have call predecessors, (2591), 97 states have return successors, (2594), 2468 states have call predecessors, (2594), 2580 states have call successors, (2594) [2022-11-19 08:02:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 14424 transitions. [2022-11-19 08:02:26,600 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 14424 transitions. Word has length 133 [2022-11-19 08:02:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:26,600 INFO L495 AbstractCegarLoop]: Abstraction has 8988 states and 14424 transitions. [2022-11-19 08:02:26,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:02:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 14424 transitions. [2022-11-19 08:02:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-19 08:02:26,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:26,634 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:26,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 08:02:26,635 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -906489731, now seen corresponding path program 1 times [2022-11-19 08:02:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:26,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667042979] [2022-11-19 08:02:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:02:26,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:26,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667042979] [2022-11-19 08:02:26,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667042979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:26,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:26,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76275416] [2022-11-19 08:02:26,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:26,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:26,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:26,731 INFO L87 Difference]: Start difference. First operand 8988 states and 14424 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:30,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:30,359 INFO L93 Difference]: Finished difference Result 22239 states and 36031 transitions. [2022-11-19 08:02:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:30,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 123 [2022-11-19 08:02:30,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:30,422 INFO L225 Difference]: With dead ends: 22239 [2022-11-19 08:02:30,423 INFO L226 Difference]: Without dead ends: 14574 [2022-11-19 08:02:30,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:30,449 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 42 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 519 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 [2022-11-19 08:02:30,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 519 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:30,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14574 states. [2022-11-19 08:02:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14574 to 14558. [2022-11-19 08:02:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14558 states, 10495 states have (on average 1.4746069556931873) internal successors, (15476), 10705 states have internal predecessors, (15476), 3965 states have call successors, (3965), 100 states have call predecessors, (3965), 97 states have return successors, (3968), 3757 states have call predecessors, (3968), 3954 states have call successors, (3968) [2022-11-19 08:02:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14558 states to 14558 states and 23409 transitions. [2022-11-19 08:02:35,114 INFO L78 Accepts]: Start accepts. Automaton has 14558 states and 23409 transitions. Word has length 123 [2022-11-19 08:02:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:35,114 INFO L495 AbstractCegarLoop]: Abstraction has 14558 states and 23409 transitions. [2022-11-19 08:02:35,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 14558 states and 23409 transitions. [2022-11-19 08:02:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-19 08:02:35,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:35,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:35,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 08:02:35,173 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:35,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:35,173 INFO L85 PathProgramCache]: Analyzing trace with hash 370556530, now seen corresponding path program 1 times [2022-11-19 08:02:35,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:35,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13123164] [2022-11-19 08:02:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:35,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:02:35,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:35,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13123164] [2022-11-19 08:02:35,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13123164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:35,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:35,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520200995] [2022-11-19 08:02:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:35,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:35,292 INFO L87 Difference]: Start difference. First operand 14558 states and 23409 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:41,776 INFO L93 Difference]: Finished difference Result 36855 states and 59683 transitions. [2022-11-19 08:02:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 124 [2022-11-19 08:02:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:41,877 INFO L225 Difference]: With dead ends: 36855 [2022-11-19 08:02:41,877 INFO L226 Difference]: Without dead ends: 24078 [2022-11-19 08:02:41,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:41,907 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 40 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 520 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 [2022-11-19 08:02:41,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 520 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24078 states. [2022-11-19 08:02:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24078 to 24070. [2022-11-19 08:02:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24070 states, 17557 states have (on average 1.468531070228399) internal successors, (25783), 17767 states have internal predecessors, (25783), 6415 states have call successors, (6415), 100 states have call predecessors, (6415), 97 states have return successors, (6418), 6207 states have call predecessors, (6418), 6404 states have call successors, (6418) [2022-11-19 08:02:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24070 states to 24070 states and 38616 transitions. [2022-11-19 08:02:47,460 INFO L78 Accepts]: Start accepts. Automaton has 24070 states and 38616 transitions. Word has length 124 [2022-11-19 08:02:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:47,461 INFO L495 AbstractCegarLoop]: Abstraction has 24070 states and 38616 transitions. [2022-11-19 08:02:47,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 24070 states and 38616 transitions. [2022-11-19 08:02:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-19 08:02:47,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:47,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:02:47,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 08:02:47,514 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:47,514 INFO L85 PathProgramCache]: Analyzing trace with hash -203917641, now seen corresponding path program 1 times [2022-11-19 08:02:47,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:47,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141534688] [2022-11-19 08:02:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:47,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:02:47,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:47,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141534688] [2022-11-19 08:02:47,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141534688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:47,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:47,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:47,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027231863] [2022-11-19 08:02:47,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:47,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:47,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:47,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:47,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:47,616 INFO L87 Difference]: Start difference. First operand 24070 states and 38616 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:02:56,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:56,901 INFO L93 Difference]: Finished difference Result 63301 states and 102158 transitions. [2022-11-19 08:02:56,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:56,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 125 [2022-11-19 08:02:56,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:57,078 INFO L225 Difference]: With dead ends: 63301 [2022-11-19 08:02:57,079 INFO L226 Difference]: Without dead ends: 43011 [2022-11-19 08:02:57,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:57,129 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 38 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 522 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 [2022-11-19 08:02:57,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 522 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:02:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43011 states. [2022-11-19 08:03:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43011 to 42995. [2022-11-19 08:03:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42995 states, 31630 states have (on average 1.4601011697755295) internal successors, (46183), 32000 states have internal predecessors, (46183), 11267 states have call successors, (11267), 100 states have call predecessors, (11267), 97 states have return successors, (11270), 10899 states have call predecessors, (11270), 11256 states have call successors, (11270) [2022-11-19 08:03:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42995 states to 42995 states and 68720 transitions. [2022-11-19 08:03:06,862 INFO L78 Accepts]: Start accepts. Automaton has 42995 states and 68720 transitions. Word has length 125 [2022-11-19 08:03:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:03:06,862 INFO L495 AbstractCegarLoop]: Abstraction has 42995 states and 68720 transitions. [2022-11-19 08:03:06,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 08:03:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 42995 states and 68720 transitions. [2022-11-19 08:03:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 08:03:06,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:03:06,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:03:06,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 08:03:06,934 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:03:06,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:03:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1643801970, now seen corresponding path program 1 times [2022-11-19 08:03:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:03:06,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940572874] [2022-11-19 08:03:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:03:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:03:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 08:03:07,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:07,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940572874] [2022-11-19 08:03:07,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940572874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:07,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:07,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:03:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788681814] [2022-11-19 08:03:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:03:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:03:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:07,035 INFO L87 Difference]: Start difference. First operand 42995 states and 68720 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22)