./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/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_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/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_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/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 7cf7ce6a809409f6f4ca5aec26ee44d6ee6c1bd8459af1b8b074817ec65bb1ea --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:44:15,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:44:15,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:44:15,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:44:15,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:44:15,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:44:15,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:44:15,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:44:15,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:44:15,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:44:15,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:44:15,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:44:15,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:44:15,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:44:15,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:44:15,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:44:15,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:44:15,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:44:15,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:44:15,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:44:15,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:44:15,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:44:15,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:44:15,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:44:15,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:44:15,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:44:15,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:44:15,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:44:15,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:44:15,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:44:15,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:44:15,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:44:15,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:44:15,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:44:15,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:44:15,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:44:15,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:44:15,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:44:15,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:44:15,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:44:15,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:44:15,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:44:15,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:44:15,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:44:15,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:44:15,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:44:15,319 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:44:15,319 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:44:15,319 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:44:15,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:44:15,319 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:44:15,319 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:44:15,321 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:44:15,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:44:15,321 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:44:15,321 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:44:15,321 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:44:15,322 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:44:15,322 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:44:15,322 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:44:15,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:44:15,323 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:44:15,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:44:15,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:44:15,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:44:15,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:44:15,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:44:15,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:44:15,326 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:44:15,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:44:15,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:44:15,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:44:15,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:44:15,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:44:15,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:44:15,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:44:15,328 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:44:15,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:44:15,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:44:15,328 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:44:15,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:44:15,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:44:15,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:44:15,329 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_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cf7ce6a809409f6f4ca5aec26ee44d6ee6c1bd8459af1b8b074817ec65bb1ea [2022-11-03 02:44:15,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:44:15,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:44:15,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:44:15,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:44:15,717 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:44:15,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec6_product21.cil.c [2022-11-03 02:44:15,791 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/data/b30499c3d/f1aa6a34798f44f5bca4159459c3d961/FLAG3579d4006 [2022-11-03 02:44:16,450 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:44:16,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/sv-benchmarks/c/product-lines/email_spec6_product21.cil.c [2022-11-03 02:44:16,486 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/data/b30499c3d/f1aa6a34798f44f5bca4159459c3d961/FLAG3579d4006 [2022-11-03 02:44:16,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/data/b30499c3d/f1aa6a34798f44f5bca4159459c3d961 [2022-11-03 02:44:16,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:44:16,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:44:16,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:44:16,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:44:16,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:44:16,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:44:16" (1/1) ... [2022-11-03 02:44:16,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd92e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:16, skipping insertion in model container [2022-11-03 02:44:16,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:44:16" (1/1) ... [2022-11-03 02:44:16,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:44:16,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:44:17,505 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_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/sv-benchmarks/c/product-lines/email_spec6_product21.cil.c[54302,54315] [2022-11-03 02:44:17,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:17,553 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:44:17,646 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_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/sv-benchmarks/c/product-lines/email_spec6_product21.cil.c[54302,54315] [2022-11-03 02:44:17,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:17,711 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:44:17,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17 WrapperNode [2022-11-03 02:44:17,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:44:17,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:44:17,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:44:17,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:44:17,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,861 INFO L138 Inliner]: procedures = 129, calls = 222, calls flagged for inlining = 56, calls inlined = 53, statements flattened = 1047 [2022-11-03 02:44:17,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:44:17,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:44:17,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:44:17,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:44:17,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,920 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:44:17,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:44:17,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:44:17,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:44:17,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (1/1) ... [2022-11-03 02:44:17,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:44:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:17,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:44:18,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:44:18,059 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:44:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:44:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:44:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:44:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:44:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:44:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:44:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:44:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:44:18,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:44:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:44:18,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:44:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:44:18,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:44:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:44:18,061 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:44:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:44:18,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:44:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:44:18,062 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:44:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:44:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:44:18,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:44:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:44:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:44:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:44:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:44:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:44:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:44:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:44:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:44:18,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:44:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:44:18,064 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:44:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-03 02:44:18,064 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-03 02:44:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:44:18,065 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:44:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:44:18,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:44:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:44:18,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:44:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:44:18,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:44:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:44:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:44:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:44:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:44:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:44:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:44:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:44:18,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:44:18,386 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:44:19,393 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:44:20,087 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:44:20,087 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:44:20,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:44:20 BoogieIcfgContainer [2022-11-03 02:44:20,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:44:20,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:44:20,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:44:20,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:44:20,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:44:16" (1/3) ... [2022-11-03 02:44:20,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cc334c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:44:20, skipping insertion in model container [2022-11-03 02:44:20,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:17" (2/3) ... [2022-11-03 02:44:20,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cc334c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:44:20, skipping insertion in model container [2022-11-03 02:44:20,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:44:20" (3/3) ... [2022-11-03 02:44:20,103 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product21.cil.c [2022-11-03 02:44:20,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:44:20,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:44:20,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:44:20,217 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;@2c40ab21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:44:20,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:44:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 116 states have internal predecessors, (146), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-03 02:44:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:44:20,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:20,255 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:20,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2014063884, now seen corresponding path program 1 times [2022-11-03 02:44:20,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:20,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256066932] [2022-11-03 02:44:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:20,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:44:20,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:20,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256066932] [2022-11-03 02:44:20,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256066932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:20,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:20,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:44:20,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249250561] [2022-11-03 02:44:20,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:20,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:44:20,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:20,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:44:20,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:44:20,839 INFO L87 Difference]: Start difference. First operand has 197 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 116 states have internal predecessors, (146), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:44:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:21,034 INFO L93 Difference]: Finished difference Result 302 states and 407 transitions. [2022-11-03 02:44:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:44:21,039 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 90 [2022-11-03 02:44:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:21,055 INFO L225 Difference]: With dead ends: 302 [2022-11-03 02:44:21,055 INFO L226 Difference]: Without dead ends: 194 [2022-11-03 02:44:21,064 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 02:44:21,068 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:21,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:44:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-03 02:44:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-11-03 02:44:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 109 states have (on average 1.2844036697247707) internal successors, (140), 113 states have internal predecessors, (140), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-03 02:44:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 261 transitions. [2022-11-03 02:44:21,162 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 261 transitions. Word has length 90 [2022-11-03 02:44:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:21,164 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 261 transitions. [2022-11-03 02:44:21,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:44:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 261 transitions. [2022-11-03 02:44:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:44:21,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:21,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:21,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:44:21,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -416405881, now seen corresponding path program 1 times [2022-11-03 02:44:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:21,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064464051] [2022-11-03 02:44:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:44:21,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:21,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064464051] [2022-11-03 02:44:21,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064464051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:21,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:21,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:44:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397260464] [2022-11-03 02:44:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:21,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:44:21,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:21,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:44:21,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:44:21,533 INFO L87 Difference]: Start difference. First operand 194 states and 261 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:44:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:21,672 INFO L93 Difference]: Finished difference Result 298 states and 392 transitions. [2022-11-03 02:44:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:44:21,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 80 [2022-11-03 02:44:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:21,676 INFO L225 Difference]: With dead ends: 298 [2022-11-03 02:44:21,678 INFO L226 Difference]: Without dead ends: 196 [2022-11-03 02:44:21,679 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 02:44:21,681 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:21,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:44:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-03 02:44:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-03 02:44:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 115 states have internal predecessors, (142), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-03 02:44:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 263 transitions. [2022-11-03 02:44:21,716 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 263 transitions. Word has length 80 [2022-11-03 02:44:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:21,717 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 263 transitions. [2022-11-03 02:44:21,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:44:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 263 transitions. [2022-11-03 02:44:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:44:21,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:21,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:21,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:44:21,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:21,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash -495194694, now seen corresponding path program 1 times [2022-11-03 02:44:21,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:21,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816936633] [2022-11-03 02:44:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:21,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:44:21,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:21,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816936633] [2022-11-03 02:44:21,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816936633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:21,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:21,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:44:21,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208562299] [2022-11-03 02:44:21,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:21,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:44:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:21,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:44:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:44:21,894 INFO L87 Difference]: Start difference. First operand 196 states and 263 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:44:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:22,024 INFO L93 Difference]: Finished difference Result 427 states and 593 transitions. [2022-11-03 02:44:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:44:22,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-03 02:44:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:22,027 INFO L225 Difference]: With dead ends: 427 [2022-11-03 02:44:22,027 INFO L226 Difference]: Without dead ends: 249 [2022-11-03 02:44:22,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:44:22,029 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 59 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:22,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 468 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:44:22,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-03 02:44:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2022-11-03 02:44:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 145 states have (on average 1.3586206896551725) internal successors, (197), 149 states have internal predecessors, (197), 75 states have call successors, (75), 23 states have call predecessors, (75), 23 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-03 02:44:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 346 transitions. [2022-11-03 02:44:22,070 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 346 transitions. Word has length 85 [2022-11-03 02:44:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:22,071 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 346 transitions. [2022-11-03 02:44:22,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:44:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 346 transitions. [2022-11-03 02:44:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:44:22,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:22,074 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:22,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:44:22,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:22,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:22,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1161749788, now seen corresponding path program 1 times [2022-11-03 02:44:22,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:22,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160494961] [2022-11-03 02:44:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:44:22,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:22,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160494961] [2022-11-03 02:44:22,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160494961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:44:22,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505403306] [2022-11-03 02:44:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:22,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:22,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:22,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:44:22,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:44:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:22,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:44:22,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:44:22,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:44:22,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505403306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:22,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1511071849] [2022-11-03 02:44:22,850 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-03 02:44:22,853 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:44:22,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:44:22,864 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:44:22,867 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:44:58,390 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 448 for LOIs [2022-11-03 02:44:58,695 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-11-03 02:45:31,875 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 454 for LOIs [2022-11-03 02:45:32,205 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:45:32,496 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 472 for LOIs [2022-11-03 02:45:36,569 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 267 for LOIs [2022-11-03 02:45:45,996 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-11-03 02:45:46,033 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 456 for LOIs [2022-11-03 02:45:46,740 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 245 for LOIs [2022-11-03 02:45:46,782 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 442 for LOIs [2022-11-03 02:45:47,060 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:46:01,216 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 448 DAG size of output: 248 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:07,351 WARN L234 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 471 DAG size of output: 268 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:21,258 WARN L234 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 468 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:32,967 WARN L234 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 490 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:44,450 WARN L234 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 512 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:51,880 WARN L234 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 563 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:46:59,393 WARN L234 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 565 DAG size of output: 379 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:47:04,861 WARN L234 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 569 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:47:10,274 WARN L234 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 565 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:47:15,819 WARN L234 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 571 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:47:23,406 WARN L234 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 564 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:47:48,566 WARN L234 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 527 DAG size of output: 355 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:05,291 WARN L234 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 565 DAG size of output: 389 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:09,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1511071849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:09,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:49:09,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-11-03 02:49:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627794323] [2022-11-03 02:49:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:09,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-03 02:49:09,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:09,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-03 02:49:09,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3037, Unknown=0, NotChecked=0, Total=3192 [2022-11-03 02:49:09,852 INFO L87 Difference]: Start difference. First operand 244 states and 346 transitions. Second operand has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-03 02:49:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:55,456 INFO L93 Difference]: Finished difference Result 588 states and 868 transitions. [2022-11-03 02:49:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-03 02:49:55,458 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 86 [2022-11-03 02:49:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:55,461 INFO L225 Difference]: With dead ends: 588 [2022-11-03 02:49:55,461 INFO L226 Difference]: Without dead ends: 362 [2022-11-03 02:49:55,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 221.1s TimeCoverageRelationStatistics Valid=191, Invalid=3715, Unknown=0, NotChecked=0, Total=3906 [2022-11-03 02:49:55,464 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 104 mSDsluCounter, 6283 mSDsCounter, 0 mSdLazyCounter, 7051 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 7074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:55,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6358 Invalid, 7074 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [23 Valid, 7051 Invalid, 0 Unknown, 0 Unchecked, 26.5s Time] [2022-11-03 02:49:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-03 02:49:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 320. [2022-11-03 02:49:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 200 states have (on average 1.345) internal successors, (269), 205 states have internal predecessors, (269), 89 states have call successors, (89), 32 states have call predecessors, (89), 30 states have return successors, (89), 84 states have call predecessors, (89), 88 states have call successors, (89) [2022-11-03 02:49:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 447 transitions. [2022-11-03 02:49:55,598 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 447 transitions. Word has length 86 [2022-11-03 02:49:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:55,599 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 447 transitions. [2022-11-03 02:49:55,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-03 02:49:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 447 transitions. [2022-11-03 02:49:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 02:49:55,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:55,602 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:55,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:49:55,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:49:55,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 530345616, now seen corresponding path program 1 times [2022-11-03 02:49:55,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:55,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011986686] [2022-11-03 02:49:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:55,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 02:49:55,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:55,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011986686] [2022-11-03 02:49:55,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011986686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:55,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:55,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:49:55,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189527297] [2022-11-03 02:49:55,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:55,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:49:55,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:55,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:49:55,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:55,938 INFO L87 Difference]: Start difference. First operand 320 states and 447 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:49:56,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:56,254 INFO L93 Difference]: Finished difference Result 742 states and 1074 transitions. [2022-11-03 02:49:56,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:49:56,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 102 [2022-11-03 02:49:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:56,258 INFO L225 Difference]: With dead ends: 742 [2022-11-03 02:49:56,258 INFO L226 Difference]: Without dead ends: 448 [2022-11-03 02:49:56,260 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 02:49:56,260 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 57 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:56,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 476 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:49:56,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-03 02:49:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 441. [2022-11-03 02:49:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 290 states have (on average 1.410344827586207) internal successors, (409), 295 states have internal predecessors, (409), 120 states have call successors, (120), 32 states have call predecessors, (120), 30 states have return successors, (120), 115 states have call predecessors, (120), 119 states have call successors, (120) [2022-11-03 02:49:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 649 transitions. [2022-11-03 02:49:56,476 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 649 transitions. Word has length 102 [2022-11-03 02:49:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:56,476 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 649 transitions. [2022-11-03 02:49:56,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:49:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 649 transitions. [2022-11-03 02:49:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 02:49:56,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:56,480 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:56,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:49:56,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash 455853532, now seen corresponding path program 1 times [2022-11-03 02:49:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:56,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526015754] [2022-11-03 02:49:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:56,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:49:56,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:56,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526015754] [2022-11-03 02:49:56,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526015754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:49:56,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381160247] [2022-11-03 02:49:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:56,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:49:56,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:56,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:49:56,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:49:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:56,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:49:56,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:49:56,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:49:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:49:57,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381160247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:49:57,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798040115] [2022-11-03 02:49:57,042 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-03 02:49:57,042 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:49:57,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:49:57,043 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:49:57,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:50:26,953 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:50:27,252 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-11-03 02:50:28,814 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-03 02:50:28,853 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:50:29,139 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-11-03 02:50:29,856 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 263 for LOIs [2022-11-03 02:50:36,947 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 441 for LOIs [2022-11-03 02:50:37,592 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-11-03 02:50:39,546 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 241 for LOIs [2022-11-03 02:50:39,582 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 226 for LOIs [2022-11-03 02:50:39,621 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:51:10,500 WARN L234 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 468 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:21,916 WARN L234 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 490 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:33,167 WARN L234 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 512 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:02,386 WARN L234 SmtUtils]: Spent 14.25s on a formula simplification. DAG size of input: 472 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:37,038 WARN L234 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 441 DAG size of output: 247 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:47,725 WARN L234 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 460 DAG size of output: 255 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:15,132 WARN L234 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 560 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:27,865 WARN L234 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 571 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:32,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [798040115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:32,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:53:32,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2022-11-03 02:53:32,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410245589] [2022-11-03 02:53:32,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:32,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-03 02:53:32,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:32,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-03 02:53:32,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=3477, Unknown=0, NotChecked=0, Total=3660 [2022-11-03 02:53:32,362 INFO L87 Difference]: Start difference. First operand 441 states and 649 transitions. Second operand has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-03 02:54:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:44,398 INFO L93 Difference]: Finished difference Result 933 states and 1423 transitions. [2022-11-03 02:54:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-03 02:54:44,399 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) Word has length 92 [2022-11-03 02:54:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:44,403 INFO L225 Difference]: With dead ends: 933 [2022-11-03 02:54:44,404 INFO L226 Difference]: Without dead ends: 607 [2022-11-03 02:54:44,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 212.6s TimeCoverageRelationStatistics Valid=308, Invalid=5242, Unknown=0, NotChecked=0, Total=5550 [2022-11-03 02:54:44,407 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 246 mSDsluCounter, 6499 mSDsCounter, 0 mSdLazyCounter, 8121 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 6537 SdHoareTripleChecker+Invalid, 8161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 8121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:44,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 6537 Invalid, 8161 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [40 Valid, 8121 Invalid, 0 Unknown, 0 Unchecked, 31.3s Time] [2022-11-03 02:54:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-03 02:54:44,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 457. [2022-11-03 02:54:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 302 states have (on average 1.413907284768212) internal successors, (427), 309 states have internal predecessors, (427), 123 states have call successors, (123), 33 states have call predecessors, (123), 31 states have return successors, (123), 116 states have call predecessors, (123), 122 states have call successors, (123) [2022-11-03 02:54:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 673 transitions. [2022-11-03 02:54:44,646 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 673 transitions. Word has length 92 [2022-11-03 02:54:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:44,650 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 673 transitions. [2022-11-03 02:54:44,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 34 states have internal predecessors, (47), 18 states have call successors, (20), 11 states have call predecessors, (20), 8 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-03 02:54:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 673 transitions. [2022-11-03 02:54:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-03 02:54:44,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:44,660 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:44,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:44,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:44,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1675500679, now seen corresponding path program 1 times [2022-11-03 02:54:44,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:44,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759199909] [2022-11-03 02:54:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:44,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:54:45,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759199909] [2022-11-03 02:54:45,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759199909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:54:45,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175569916] [2022-11-03 02:54:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:45,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:45,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:45,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:45,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12f5f9ac-cc00-42d0-91eb-4f2ee446980d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:54:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:45,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:45,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:54:45,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:54:45,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175569916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:45,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [857195457] [2022-11-03 02:54:45,576 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2022-11-03 02:54:45,576 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:54:45,577 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:54:45,577 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:54:45,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:55:52,939 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:55:53,234 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-03 02:55:53,517 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-03 02:55:53,791 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 232 for LOIs [2022-11-03 02:55:55,095 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2022-11-03 02:55:55,157 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:55:55,453 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 232 for LOIs [2022-11-03 02:55:55,973 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 212 for LOIs [2022-11-03 02:55:56,002 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 212 for LOIs [2022-11-03 02:55:56,034 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 202 for LOIs [2022-11-03 02:55:56,062 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:56:23,642 WARN L234 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 468 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:34,924 WARN L234 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 490 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:45,996 WARN L234 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 512 DAG size of output: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:02,152 WARN L234 SmtUtils]: Spent 9.56s on a formula simplification. DAG size of input: 532 DAG size of output: 413 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)