./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI --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 13f72d33ad8dc1f394ba6b36d4d28c51e0dd0afffaf225b08b0adb7c8b4dde17 --- 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-5e519f3 [2022-11-03 04:09:05,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:09:05,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:09:05,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:09:05,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:09:05,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:09:05,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:09:05,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:09:05,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:09:05,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:09:05,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:09:05,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:09:05,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:09:05,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:09:05,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:09:05,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:09:05,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:09:05,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:09:05,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:09:05,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:09:05,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:09:05,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:09:05,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:09:05,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:09:05,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:09:05,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:09:05,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:09:05,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:09:05,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:09:05,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:09:05,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:09:05,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:09:05,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:09:05,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:09:05,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:09:05,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:09:05,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:09:05,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:09:05,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:09:05,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:09:05,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:09:05,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:09:05,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:09:05,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:09:05,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:09:05,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:09:05,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:09:05,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:09:05,964 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:09:05,964 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:09:05,964 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:09:05,965 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:09:05,966 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:09:05,966 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:09:05,966 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:09:05,967 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:09:05,967 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:09:05,967 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:09:05,967 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:09:05,968 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:09:05,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:09:05,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:09:05,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:09:05,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:09:05,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:09:05,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:09:05,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:09:05,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:09:05,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:09:05,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:09:05,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:09:05,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:09:05,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:09:05,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:09:05,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:05,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:09:05,973 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:09:05,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:09:05,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:09:05,974 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:09:05,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:09:05,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:09:05,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:09:05,975 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_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13f72d33ad8dc1f394ba6b36d4d28c51e0dd0afffaf225b08b0adb7c8b4dde17 [2022-11-03 04:09:06,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:09:06,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:09:06,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:09:06,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:09:06,398 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:09:06,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec0_product21.cil.c [2022-11-03 04:09:06,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/data/3350693d7/bb3434eb48ed442eb82d7b1a03cbbd3f/FLAGab9507b07 [2022-11-03 04:09:07,151 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:09:07,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/sv-benchmarks/c/product-lines/email_spec0_product21.cil.c [2022-11-03 04:09:07,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/data/3350693d7/bb3434eb48ed442eb82d7b1a03cbbd3f/FLAGab9507b07 [2022-11-03 04:09:07,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/data/3350693d7/bb3434eb48ed442eb82d7b1a03cbbd3f [2022-11-03 04:09:07,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:09:07,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:09:07,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:07,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:09:07,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:09:07,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:07" (1/1) ... [2022-11-03 04:09:07,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5080ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:07, skipping insertion in model container [2022-11-03 04:09:07,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:09:07" (1/1) ... [2022-11-03 04:09:07,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:09:07,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:09:08,054 WARN L230 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_b90abf92-178f-4a5c-baa3-985ffefbf958/sv-benchmarks/c/product-lines/email_spec0_product21.cil.c[44895,44908] [2022-11-03 04:09:08,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:08,147 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:09:08,276 WARN L230 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_b90abf92-178f-4a5c-baa3-985ffefbf958/sv-benchmarks/c/product-lines/email_spec0_product21.cil.c[44895,44908] [2022-11-03 04:09:08,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:09:08,359 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:09:08,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08 WrapperNode [2022-11-03 04:09:08,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:09:08,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:08,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:09:08,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:09:08,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,525 INFO L138 Inliner]: procedures = 128, calls = 214, calls flagged for inlining = 56, calls inlined = 53, statements flattened = 1049 [2022-11-03 04:09:08,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:09:08,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:09:08,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:09:08,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:09:08,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,599 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:09:08,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:09:08,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:09:08,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:09:08,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (1/1) ... [2022-11-03 04:09:08,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:09:08,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:08,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:09:08,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:09:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 04:09:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 04:09:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 04:09:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 04:09:08,751 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 04:09:08,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 04:09:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 04:09:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 04:09:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 04:09:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 04:09:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 04:09:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 04:09:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 04:09:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 04:09:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 04:09:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 04:09:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 04:09:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 04:09:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 04:09:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 04:09:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 04:09:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 04:09:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 04:09:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:09:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 04:09:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 04:09:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 04:09:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 04:09:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 04:09:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 04:09:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 04:09:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 04:09:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-03 04:09:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-03 04:09:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 04:09:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 04:09:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 04:09:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 04:09:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 04:09:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 04:09:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 04:09:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 04:09:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:09:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 04:09:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 04:09:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 04:09:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 04:09:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:09:08,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:09:09,057 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:09:09,073 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:09:10,137 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:09:10,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:09:10,723 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:09:10,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:10 BoogieIcfgContainer [2022-11-03 04:09:10,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:09:10,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:09:10,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:09:10,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:09:10,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:09:07" (1/3) ... [2022-11-03 04:09:10,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2027e038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:10, skipping insertion in model container [2022-11-03 04:09:10,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:09:08" (2/3) ... [2022-11-03 04:09:10,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2027e038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:09:10, skipping insertion in model container [2022-11-03 04:09:10,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:09:10" (3/3) ... [2022-11-03 04:09:10,739 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product21.cil.c [2022-11-03 04:09:10,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:09:10,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:09:10,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:09:10,843 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;@2b71c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:09:10,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:09:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 110 states have internal predecessors, (139), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-03 04:09:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 04:09:10,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:10,866 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:10,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash 389002337, now seen corresponding path program 1 times [2022-11-03 04:09:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:10,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514612423] [2022-11-03 04:09:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:10,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 04:09:11,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:11,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514612423] [2022-11-03 04:09:11,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514612423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:11,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:11,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:09:11,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693928710] [2022-11-03 04:09:11,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:09:11,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:11,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:09:11,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:09:11,447 INFO L87 Difference]: Start difference. First operand has 186 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 110 states have internal predecessors, (139), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 04:09:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:11,639 INFO L93 Difference]: Finished difference Result 280 states and 377 transitions. [2022-11-03 04:09:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:09:11,644 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 88 [2022-11-03 04:09:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:11,653 INFO L225 Difference]: With dead ends: 280 [2022-11-03 04:09:11,654 INFO L226 Difference]: Without dead ends: 183 [2022-11-03 04:09:11,658 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 [2022-11-03 04:09:11,662 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:11,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-03 04:09:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-03 04:09:11,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 107 states have internal predecessors, (133), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-03 04:09:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 246 transitions. [2022-11-03 04:09:11,733 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 246 transitions. Word has length 88 [2022-11-03 04:09:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:11,735 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 246 transitions. [2022-11-03 04:09:11,735 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, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 04:09:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 246 transitions. [2022-11-03 04:09:11,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 04:09:11,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:11,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-03 04:09:11,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:09:11,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:11,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash -537339883, now seen corresponding path program 1 times [2022-11-03 04:09:11,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:11,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304487617] [2022-11-03 04:09:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:11,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 04:09:12,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:12,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304487617] [2022-11-03 04:09:12,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304487617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:12,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:12,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:12,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721477919] [2022-11-03 04:09:12,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:12,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:12,080 INFO L87 Difference]: Start difference. First operand 183 states and 246 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 04:09:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:12,244 INFO L93 Difference]: Finished difference Result 276 states and 362 transitions. [2022-11-03 04:09:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:12,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 89 [2022-11-03 04:09:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:12,247 INFO L225 Difference]: With dead ends: 276 [2022-11-03 04:09:12,248 INFO L226 Difference]: Without dead ends: 185 [2022-11-03 04:09:12,249 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 [2022-11-03 04:09:12,250 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:12,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-03 04:09:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-03 04:09:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 105 states have (on average 1.2857142857142858) internal successors, (135), 109 states have internal predecessors, (135), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-03 04:09:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 248 transitions. [2022-11-03 04:09:12,272 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 248 transitions. Word has length 89 [2022-11-03 04:09:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:12,272 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 248 transitions. [2022-11-03 04:09:12,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 04:09:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 248 transitions. [2022-11-03 04:09:12,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 04:09:12,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:12,276 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] [2022-11-03 04:09:12,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:09:12,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash -56293335, now seen corresponding path program 1 times [2022-11-03 04:09:12,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:12,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018810945] [2022-11-03 04:09:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 04:09:12,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:12,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018810945] [2022-11-03 04:09:12,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018810945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:12,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:12,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:09:12,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150271607] [2022-11-03 04:09:12,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:12,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:09:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:12,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:09:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:09:12,423 INFO L87 Difference]: Start difference. First operand 185 states and 248 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 04:09:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:12,616 INFO L93 Difference]: Finished difference Result 405 states and 563 transitions. [2022-11-03 04:09:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:09:12,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-03 04:09:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:12,619 INFO L225 Difference]: With dead ends: 405 [2022-11-03 04:09:12,619 INFO L226 Difference]: Without dead ends: 238 [2022-11-03 04:09:12,621 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 [2022-11-03 04:09:12,623 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 59 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:12,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 434 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:09:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-03 04:09:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 233. [2022-11-03 04:09:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 143 states have internal predecessors, (190), 71 states have call successors, (71), 22 states have call predecessors, (71), 22 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 04:09:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 331 transitions. [2022-11-03 04:09:12,648 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 331 transitions. Word has length 83 [2022-11-03 04:09:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:12,649 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 331 transitions. [2022-11-03 04:09:12,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 04:09:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 331 transitions. [2022-11-03 04:09:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 04:09:12,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:12,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:12,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:09:12,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1338519018, now seen corresponding path program 1 times [2022-11-03 04:09:12,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:12,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587657079] [2022-11-03 04:09:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:12,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 04:09:12,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:12,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587657079] [2022-11-03 04:09:12,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587657079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:12,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567883221] [2022-11-03 04:09:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:12,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:12,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:12,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:12,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:09:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:13,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:09:13,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 04:09:13,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 04:09:13,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567883221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:09:13,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [862993816] [2022-11-03 04:09:13,521 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-03 04:09:13,521 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:09:13,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:09:13,534 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:09:13,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:09:40,738 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 04:09:41,031 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 04:09:41,379 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:19,348 WARN L234 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 486 DAG size of output: 288 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:26,914 WARN L234 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 498 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:51,217 WARN L234 SmtUtils]: Spent 16.80s on a formula simplification. DAG size of input: 581 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:59,287 WARN L234 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 564 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:10,124 WARN L234 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 566 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:20,718 WARN L234 SmtUtils]: Spent 9.99s on a formula simplification. DAG size of input: 562 DAG size of output: 426 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:21,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [862993816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:21,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:11:21,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 04:11:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150029567] [2022-11-03 04:11:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:21,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 04:11:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 04:11:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:11:21,999 INFO L87 Difference]: Start difference. First operand 233 states and 331 transitions. Second operand has 21 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 04:11:30,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:30,787 INFO L93 Difference]: Finished difference Result 513 states and 762 transitions. [2022-11-03 04:11:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 04:11:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 95 [2022-11-03 04:11:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:30,790 INFO L225 Difference]: With dead ends: 513 [2022-11-03 04:11:30,791 INFO L226 Difference]: Without dead ends: 298 [2022-11-03 04:11:30,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 100.6s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:11:30,793 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 93 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:30,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 3214 Invalid, 1927 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13 Valid, 1914 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 04:11:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-03 04:11:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 256. [2022-11-03 04:11:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 161 states have (on average 1.3850931677018634) internal successors, (223), 165 states have internal predecessors, (223), 71 states have call successors, (71), 23 states have call predecessors, (71), 23 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 04:11:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 364 transitions. [2022-11-03 04:11:30,946 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 364 transitions. Word has length 95 [2022-11-03 04:11:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:30,946 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 364 transitions. [2022-11-03 04:11:30,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 04:11:30,947 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 364 transitions. [2022-11-03 04:11:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 04:11:30,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:30,951 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:30,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:31,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:31,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash 957059485, now seen corresponding path program 1 times [2022-11-03 04:11:31,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:31,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18264053] [2022-11-03 04:11:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 04:11:31,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:31,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18264053] [2022-11-03 04:11:31,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18264053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:31,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:31,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:31,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077248237] [2022-11-03 04:11:31,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:31,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:11:31,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:11:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:11:31,287 INFO L87 Difference]: Start difference. First operand 256 states and 364 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 04:11:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:31,621 INFO L93 Difference]: Finished difference Result 615 states and 908 transitions. [2022-11-03 04:11:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:11:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-11-03 04:11:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:31,625 INFO L225 Difference]: With dead ends: 615 [2022-11-03 04:11:31,625 INFO L226 Difference]: Without dead ends: 383 [2022-11-03 04:11:31,626 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 [2022-11-03 04:11:31,627 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 57 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:31,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 442 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-03 04:11:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 378. [2022-11-03 04:11:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 252 states have (on average 1.4404761904761905) internal successors, (363), 256 states have internal predecessors, (363), 102 states have call successors, (102), 23 states have call predecessors, (102), 23 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-03 04:11:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 566 transitions. [2022-11-03 04:11:31,798 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 566 transitions. Word has length 100 [2022-11-03 04:11:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:31,798 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 566 transitions. [2022-11-03 04:11:31,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 04:11:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 566 transitions. [2022-11-03 04:11:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 04:11:31,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:31,802 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:11:31,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:11:31,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:31,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1589474159, now seen corresponding path program 1 times [2022-11-03 04:11:31,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:31,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267324233] [2022-11-03 04:11:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:31,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:11:31,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:31,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267324233] [2022-11-03 04:11:31,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267324233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:31,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778127577] [2022-11-03 04:11:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:31,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:31,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:31,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:32,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:11:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:32,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:11:32,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:11:32,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:11:32,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778127577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:32,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [736108458] [2022-11-03 04:11:32,428 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-03 04:11:32,429 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:11:32,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:11:32,430 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:11:32,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:12:12,302 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 04:12:12,623 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-03 04:12:12,920 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 250 for LOIs [2022-11-03 04:12:14,386 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 252 for LOIs [2022-11-03 04:12:15,197 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 259 for LOIs [2022-11-03 04:12:28,377 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 439 for LOIs [2022-11-03 04:12:28,980 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 232 for LOIs [2022-11-03 04:12:29,022 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 451 for LOIs [2022-11-03 04:12:29,715 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 224 for LOIs [2022-11-03 04:12:29,753 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:12:42,845 WARN L234 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:49,004 WARN L234 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:13,869 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 486 DAG size of output: 288 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:21,393 WARN L234 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 498 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:52,188 WARN L234 SmtUtils]: Spent 23.20s on a formula simplification. DAG size of input: 587 DAG size of output: 454 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:05,754 WARN L234 SmtUtils]: Spent 12.10s on a formula simplification. DAG size of input: 586 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:30,438 WARN L234 SmtUtils]: Spent 23.13s on a formula simplification. DAG size of input: 585 DAG size of output: 457 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:54,990 WARN L234 SmtUtils]: Spent 22.86s on a formula simplification. DAG size of input: 583 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:20,302 WARN L234 SmtUtils]: Spent 23.52s on a formula simplification. DAG size of input: 582 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:20,129 WARN L234 SmtUtils]: Spent 13.31s on a formula simplification. DAG size of input: 439 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:37,074 WARN L234 SmtUtils]: Spent 14.03s on a formula simplification. DAG size of input: 458 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:04,748 WARN L234 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 547 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:11,904 WARN L234 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 590 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:21,141 WARN L234 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 648 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:21,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [736108458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:17:21,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:17:21,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-03 04:17:21,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126200379] [2022-11-03 04:17:21,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:17:21,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-03 04:17:21,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:17:21,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-03 04:17:21,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3154, Unknown=0, NotChecked=0, Total=3306 [2022-11-03 04:17:21,150 INFO L87 Difference]: Start difference. First operand 378 states and 566 transitions. Second operand has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 17 states have call successors, (19), 10 states have call predecessors, (19), 7 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-03 04:17:44,880 WARN L234 SmtUtils]: Spent 20.35s on a formula simplification. DAG size of input: 563 DAG size of output: 417 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:09,383 WARN L234 SmtUtils]: Spent 20.53s on a formula simplification. DAG size of input: 565 DAG size of output: 437 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:30,507 WARN L234 SmtUtils]: Spent 20.22s on a formula simplification. DAG size of input: 563 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:18:50,915 WARN L234 SmtUtils]: Spent 19.55s on a formula simplification. DAG size of input: 563 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:12,781 WARN L234 SmtUtils]: Spent 20.85s on a formula simplification. DAG size of input: 585 DAG size of output: 431 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:23,802 WARN L234 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 586 DAG size of output: 421 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:34,574 WARN L234 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 588 DAG size of output: 423 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:45,927 WARN L234 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 580 DAG size of output: 405 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:19:59,567 WARN L234 SmtUtils]: Spent 12.34s on a formula simplification. DAG size of input: 593 DAG size of output: 426 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:21,865 WARN L234 SmtUtils]: Spent 20.18s on a formula simplification. DAG size of input: 584 DAG size of output: 432 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:20:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:20:54,740 INFO L93 Difference]: Finished difference Result 834 states and 1282 transitions. [2022-11-03 04:20:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-03 04:20:54,741 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 17 states have call successors, (19), 10 states have call predecessors, (19), 7 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 90 [2022-11-03 04:20:54,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:20:54,746 INFO L225 Difference]: With dead ends: 834 [2022-11-03 04:20:54,746 INFO L226 Difference]: Without dead ends: 519 [2022-11-03 04:20:54,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 213 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 473.6s TimeCoverageRelationStatistics Valid=277, Invalid=5125, Unknown=0, NotChecked=0, Total=5402 [2022-11-03 04:20:54,750 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 404 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 6643 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 5608 SdHoareTripleChecker+Invalid, 6712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 6643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:20:54,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 5608 Invalid, 6712 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [69 Valid, 6643 Invalid, 0 Unknown, 0 Unchecked, 30.4s Time] [2022-11-03 04:20:54,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-03 04:20:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 444. [2022-11-03 04:20:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 300 states have (on average 1.4166666666666667) internal successors, (425), 307 states have internal predecessors, (425), 114 states have call successors, (114), 31 states have call predecessors, (114), 29 states have return successors, (113), 107 states have call predecessors, (113), 113 states have call successors, (113) [2022-11-03 04:20:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 652 transitions. [2022-11-03 04:20:55,086 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 652 transitions. Word has length 90 [2022-11-03 04:20:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:20:55,086 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 652 transitions. [2022-11-03 04:20:55,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 33 states have internal predecessors, (46), 17 states have call successors, (19), 10 states have call predecessors, (19), 7 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-03 04:20:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 652 transitions. [2022-11-03 04:20:55,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-03 04:20:55,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:20:55,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:20:55,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 04:20:55,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 04:20:55,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:20:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:20:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash -353725040, now seen corresponding path program 1 times [2022-11-03 04:20:55,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:20:55,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536164556] [2022-11-03 04:20:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:55,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:20:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 04:20:55,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:20:55,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536164556] [2022-11-03 04:20:55,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536164556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:20:55,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593394782] [2022-11-03 04:20:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:20:55,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:20:55,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:20:55,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:20:55,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b90abf92-178f-4a5c-baa3-985ffefbf958/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:20:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:20:55,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:20:55,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:20:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 04:20:55,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:20:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 04:20:55,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593394782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:20:55,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1255718094] [2022-11-03 04:20:55,996 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-11-03 04:20:55,997 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:20:55,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:20:55,998 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:20:55,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs