./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/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_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/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_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/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 bcfdffd5743ab46e6f5628bffe82029f1c91fa1aa61e5033c157235a6e9c82be --- 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 02:50:45,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:50:45,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:50:45,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:50:45,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:50:45,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:50:45,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:50:45,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:50:45,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:50:45,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:50:45,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:50:45,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:50:45,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:50:45,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:50:45,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:50:45,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:50:45,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:50:45,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:50:45,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:50:45,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:50:45,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:50:45,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:50:45,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:50:45,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:50:45,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:50:45,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:50:45,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:50:45,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:50:45,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:50:45,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:50:45,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:50:45,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:50:45,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:50:45,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:50:45,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:50:45,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:50:45,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:50:45,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:50:45,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:50:45,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:50:45,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:50:45,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:50:45,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:50:45,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:50:45,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:50:45,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:50:45,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:50:45,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:50:45,462 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:50:45,462 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:50:45,463 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:50:45,463 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:50:45,464 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:50:45,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:50:45,465 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:50:45,465 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:50:45,465 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:50:45,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:50:45,466 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:50:45,466 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:50:45,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:50:45,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:50:45,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:50:45,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:50:45,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:50:45,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:50:45,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:50:45,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:50:45,471 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:50:45,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:50:45,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:50:45,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:50:45,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:50:45,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:50:45,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:50:45,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:50:45,479 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:50:45,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:50:45,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:50:45,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:50:45,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:50:45,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:50:45,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:50:45,481 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_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfdffd5743ab46e6f5628bffe82029f1c91fa1aa61e5033c157235a6e9c82be [2022-11-03 02:50:45,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:50:45,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:50:45,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:50:45,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:50:45,816 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:50:45,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec6_product14.cil.c [2022-11-03 02:50:45,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/data/20bd67ce2/21038b39bd074b03a873630c0bb695e9/FLAGa5f96f84c [2022-11-03 02:50:46,629 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:50:46,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c [2022-11-03 02:50:46,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/data/20bd67ce2/21038b39bd074b03a873630c0bb695e9/FLAGa5f96f84c [2022-11-03 02:50:46,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/data/20bd67ce2/21038b39bd074b03a873630c0bb695e9 [2022-11-03 02:50:46,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:50:46,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:50:46,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:50:46,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:50:46,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:50:46,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:50:46" (1/1) ... [2022-11-03 02:50:46,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2131f1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:46, skipping insertion in model container [2022-11-03 02:50:46,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:50:46" (1/1) ... [2022-11-03 02:50:46,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:50:46,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:50:47,502 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_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c[43937,43950] [2022-11-03 02:50:47,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:50:47,584 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:50:47,705 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_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c[43937,43950] [2022-11-03 02:50:47,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:50:47,798 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:50:47,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47 WrapperNode [2022-11-03 02:50:47,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:50:47,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:50:47,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:50:47,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:50:47,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,889 INFO L138 Inliner]: procedures = 126, calls = 212, calls flagged for inlining = 49, calls inlined = 41, statements flattened = 878 [2022-11-03 02:50:47,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:50:47,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:50:47,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:50:47,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:50:47,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,983 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:47,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:50:47,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:50:47,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:50:47,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:50:48,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (1/1) ... [2022-11-03 02:50:48,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:50:48,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:48,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:50:48,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:50:48,089 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:50:48,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:50:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:50:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:50:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:50:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:50:48,090 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:50:48,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:50:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:50:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:50:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:50:48,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:50:48,091 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:50:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:50:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:50:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:50:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:50:48,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:50:48,092 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:50:48,093 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:50:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:50:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:50:48,093 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:50:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:50:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:50:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:50:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:50:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:50:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:50:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:50:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:50:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:50:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:50:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:50:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-03 02:50:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-03 02:50:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:50:48,095 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:50:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:50:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:50:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:50:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:50:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:50:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:50:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:50:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:50:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:50:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:50:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:50:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:50:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:50:48,329 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:50:48,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:50:49,339 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:50:49,928 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:50:49,929 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:50:49,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:50:49 BoogieIcfgContainer [2022-11-03 02:50:49,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:50:49,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:50:49,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:50:49,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:50:49,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:50:46" (1/3) ... [2022-11-03 02:50:49,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c021162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:50:49, skipping insertion in model container [2022-11-03 02:50:49,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:50:47" (2/3) ... [2022-11-03 02:50:49,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c021162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:50:49, skipping insertion in model container [2022-11-03 02:50:49,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:50:49" (3/3) ... [2022-11-03 02:50:49,943 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product14.cil.c [2022-11-03 02:50:49,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:50:49,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:50:50,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:50:50,032 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;@5102e0f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:50:50,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:50:50,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 109 states have internal predecessors, (138), 56 states have call successors, (56), 23 states have call predecessors, (56), 23 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-11-03 02:50:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:50:50,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:50,052 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] [2022-11-03 02:50:50,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1647363356, now seen corresponding path program 1 times [2022-11-03 02:50:50,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:50,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640030335] [2022-11-03 02:50:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:50,510 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 02:50:50,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:50,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640030335] [2022-11-03 02:50:50,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640030335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:50,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:50,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:50:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853344604] [2022-11-03 02:50:50,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:50,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:50:50,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:50,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:50:50,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:50:50,565 INFO L87 Difference]: Start difference. First operand has 185 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 109 states have internal predecessors, (138), 56 states have call successors, (56), 23 states have call predecessors, (56), 23 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 02:50:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:50,751 INFO L93 Difference]: Finished difference Result 278 states and 371 transitions. [2022-11-03 02:50:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:50:50,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 79 [2022-11-03 02:50:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:50,764 INFO L225 Difference]: With dead ends: 278 [2022-11-03 02:50:50,765 INFO L226 Difference]: Without dead ends: 182 [2022-11-03 02:50:50,769 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 02:50:50,772 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:50,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:50:50,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-03 02:50:50,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-03 02:50:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 102 states have (on average 1.2941176470588236) internal successors, (132), 106 states have internal predecessors, (132), 56 states have call successors, (56), 23 states have call predecessors, (56), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-03 02:50:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 243 transitions. [2022-11-03 02:50:50,831 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 243 transitions. Word has length 79 [2022-11-03 02:50:50,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:50,833 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 243 transitions. [2022-11-03 02:50:50,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 02:50:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 243 transitions. [2022-11-03 02:50:50,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:50:50,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:50,843 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 02:50:50,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:50:50,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:50,844 INFO L85 PathProgramCache]: Analyzing trace with hash -87781500, now seen corresponding path program 1 times [2022-11-03 02:50:50,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254197068] [2022-11-03 02:50:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:50,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:51,184 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 02:50:51,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:51,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254197068] [2022-11-03 02:50:51,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254197068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:51,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:51,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:51,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529198277] [2022-11-03 02:50:51,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:51,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:51,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:51,189 INFO L87 Difference]: Start difference. First operand 182 states and 243 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 02:50:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:51,336 INFO L93 Difference]: Finished difference Result 274 states and 356 transitions. [2022-11-03 02:50:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:51,337 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 02:50:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:51,339 INFO L225 Difference]: With dead ends: 274 [2022-11-03 02:50:51,339 INFO L226 Difference]: Without dead ends: 184 [2022-11-03 02:50:51,341 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 02:50:51,342 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:51,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:50:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-03 02:50:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-03 02:50:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 108 states have internal predecessors, (134), 56 states have call successors, (56), 23 states have call predecessors, (56), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-03 02:50:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 245 transitions. [2022-11-03 02:50:51,365 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 245 transitions. Word has length 80 [2022-11-03 02:50:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:51,366 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 245 transitions. [2022-11-03 02:50:51,366 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 02:50:51,366 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 245 transitions. [2022-11-03 02:50:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:50:51,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:51,379 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 02:50:51,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:50:51,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -358896681, now seen corresponding path program 1 times [2022-11-03 02:50:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:51,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32006410] [2022-11-03 02:50:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:51,617 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 02:50:51,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:51,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32006410] [2022-11-03 02:50:51,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32006410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:51,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:51,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:51,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017629265] [2022-11-03 02:50:51,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:51,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:51,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:51,623 INFO L87 Difference]: Start difference. First operand 184 states and 245 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 02:50:51,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:51,784 INFO L93 Difference]: Finished difference Result 403 states and 557 transitions. [2022-11-03 02:50:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:51,785 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 02:50:51,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:51,793 INFO L225 Difference]: With dead ends: 403 [2022-11-03 02:50:51,793 INFO L226 Difference]: Without dead ends: 237 [2022-11-03 02:50:51,799 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 02:50:51,804 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 59 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:51,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 439 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:50:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-03 02:50:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2022-11-03 02:50:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 138 states have (on average 1.3695652173913044) internal successors, (189), 142 states have internal predecessors, (189), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-03 02:50:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 328 transitions. [2022-11-03 02:50:51,840 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 328 transitions. Word has length 85 [2022-11-03 02:50:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:51,840 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 328 transitions. [2022-11-03 02:50:51,840 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 02:50:51,841 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 328 transitions. [2022-11-03 02:50:51,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:50:51,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:51,844 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 02:50:51,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:50:51,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:51,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash 541625859, now seen corresponding path program 1 times [2022-11-03 02:50:51,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:51,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979204535] [2022-11-03 02:50:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:51,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:52,071 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 02:50:52,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:52,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979204535] [2022-11-03 02:50:52,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979204535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:52,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515010186] [2022-11-03 02:50:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:52,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:52,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:52,075 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:52,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:50:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:52,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:50:52,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:52,489 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 02:50:52,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:50:52,592 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 02:50:52,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515010186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:50:52,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2035476785] [2022-11-03 02:50:52,620 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-03 02:50:52,620 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:50:52,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:50:52,630 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:50:52,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:51:21,849 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:51:22,183 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-11-03 02:51:23,948 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-11-03 02:51:23,990 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:51:24,312 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-11-03 02:51:25,347 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 253 for LOIs [2022-11-03 02:51:35,434 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 238 for LOIs [2022-11-03 02:51:35,471 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 481 for LOIs [2022-11-03 02:51:40,539 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 242 for LOIs [2022-11-03 02:51:40,577 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 230 for LOIs [2022-11-03 02:51:40,617 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:52:13,941 WARN L234 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:21,747 WARN L234 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 490 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:55,873 WARN L234 SmtUtils]: Spent 22.36s on a formula simplification. DAG size of input: 581 DAG size of output: 452 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:08,375 WARN L234 SmtUtils]: Spent 11.14s on a formula simplification. DAG size of input: 583 DAG size of output: 333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:31,376 WARN L234 SmtUtils]: Spent 14.57s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:38,695 WARN L234 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 498 DAG size of output: 267 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:25,225 WARN L234 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 555 DAG size of output: 363 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:38,785 WARN L234 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 564 DAG size of output: 398 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:41,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2035476785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:41,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:54:41,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-11-03 02:54:41,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030428034] [2022-11-03 02:54:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:41,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-03 02:54:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-03 02:54:41,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3042, Unknown=0, NotChecked=0, Total=3192 [2022-11-03 02:54:41,117 INFO L87 Difference]: Start difference. First operand 232 states and 328 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 02:54:55,137 WARN L234 SmtUtils]: Spent 9.76s on a formula simplification. DAG size of input: 577 DAG size of output: 446 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:06,244 WARN L234 SmtUtils]: Spent 9.85s on a formula simplification. DAG size of input: 584 DAG size of output: 448 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:39,635 INFO L93 Difference]: Finished difference Result 596 states and 895 transitions. [2022-11-03 02:55:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 02:55:39,641 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 02:55:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:39,644 INFO L225 Difference]: With dead ends: 596 [2022-11-03 02:55:39,645 INFO L226 Difference]: Without dead ends: 382 [2022-11-03 02:55:39,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 211.4s TimeCoverageRelationStatistics Valid=193, Invalid=3839, Unknown=0, NotChecked=0, Total=4032 [2022-11-03 02:55:39,648 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 188 mSDsluCounter, 5826 mSDsCounter, 0 mSdLazyCounter, 7348 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 7379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 7348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:39,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 5984 Invalid, 7379 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [31 Valid, 7348 Invalid, 0 Unknown, 0 Unchecked, 26.9s Time] [2022-11-03 02:55:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-03 02:55:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 329. [2022-11-03 02:55:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 214 states have (on average 1.411214953271028) internal successors, (302), 219 states have internal predecessors, (302), 84 states have call successors, (84), 32 states have call predecessors, (84), 30 states have return successors, (84), 79 states have call predecessors, (84), 83 states have call successors, (84) [2022-11-03 02:55:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 470 transitions. [2022-11-03 02:55:39,844 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 470 transitions. Word has length 86 [2022-11-03 02:55:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:39,847 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 470 transitions. [2022-11-03 02:55:39,847 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 02:55:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 470 transitions. [2022-11-03 02:55:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:55:39,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:39,858 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] [2022-11-03 02:55:39,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:55:40,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:55:40,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:40,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2100549005, now seen corresponding path program 1 times [2022-11-03 02:55:40,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:40,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146232382] [2022-11-03 02:55:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:55:40,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:40,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146232382] [2022-11-03 02:55:40,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146232382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:40,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:40,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:55:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533482249] [2022-11-03 02:55:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:40,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:55:40,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:55:40,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:55:40,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:55:40,179 INFO L87 Difference]: Start difference. First operand 329 states and 470 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:55:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:40,512 INFO L93 Difference]: Finished difference Result 782 states and 1162 transitions. [2022-11-03 02:55:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:55:40,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 91 [2022-11-03 02:55:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:40,516 INFO L225 Difference]: With dead ends: 782 [2022-11-03 02:55:40,516 INFO L226 Difference]: Without dead ends: 479 [2022-11-03 02:55:40,518 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 02:55:40,518 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 57 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:40,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 452 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:55:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-03 02:55:40,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 472. [2022-11-03 02:55:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 326 states have (on average 1.48159509202454) internal successors, (483), 331 states have internal predecessors, (483), 115 states have call successors, (115), 32 states have call predecessors, (115), 30 states have return successors, (115), 110 states have call predecessors, (115), 114 states have call successors, (115) [2022-11-03 02:55:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 713 transitions. [2022-11-03 02:55:40,746 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 713 transitions. Word has length 91 [2022-11-03 02:55:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:40,746 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 713 transitions. [2022-11-03 02:55:40,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:55:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 713 transitions. [2022-11-03 02:55:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 02:55:40,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:40,750 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 02:55:40,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:55:40,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:40,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1312213214, now seen corresponding path program 1 times [2022-11-03 02:55:40,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:40,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037726747] [2022-11-03 02:55:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:40,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:40,961 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 02:55:40,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:40,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037726747] [2022-11-03 02:55:40,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037726747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:55:40,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604046945] [2022-11-03 02:55:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:40,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:55:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:55:40,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:55:40,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:55:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:41,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:55:41,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:41,292 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 02:55:41,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:55:41,365 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 02:55:41,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604046945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:55:41,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1259413734] [2022-11-03 02:55:41,369 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-03 02:55:41,369 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:55:41,370 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:55:41,370 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:55:41,370 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:56:18,224 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 02:56:18,531 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 251 for LOIs [2022-11-03 02:56:20,012 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 02:56:20,061 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 02:56:20,367 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 251 for LOIs [2022-11-03 02:56:21,031 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 252 for LOIs [2022-11-03 02:56:27,979 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 447 for LOIs [2022-11-03 02:56:28,629 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-03 02:56:30,533 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 241 for LOIs [2022-11-03 02:56:30,577 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 227 for LOIs [2022-11-03 02:56:30,614 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:57:05,109 WARN L234 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:12,755 WARN L234 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 490 DAG size of output: 343 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:47,089 WARN L234 SmtUtils]: Spent 22.67s on a formula simplification. DAG size of input: 587 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:59,899 WARN L234 SmtUtils]: Spent 11.13s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:22,075 WARN L234 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 475 DAG size of output: 260 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:01,785 WARN L234 SmtUtils]: Spent 13.12s on a formula simplification. DAG size of input: 447 DAG size of output: 345 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:17,832 WARN L234 SmtUtils]: Spent 13.49s on a formula simplification. DAG size of input: 466 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:56,116 WARN L234 SmtUtils]: Spent 10.23s on a formula simplification. DAG size of input: 565 DAG size of output: 426 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:00,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1259413734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:00:00,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:00:00,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2022-11-03 03:00:00,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025711707] [2022-11-03 03:00:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:00:00,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-03 03:00:00,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:00:00,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-03 03:00:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3488, Unknown=0, NotChecked=0, Total=3660 [2022-11-03 03:00:00,243 INFO L87 Difference]: Start difference. First operand 472 states and 713 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 03:00:22,989 WARN L234 SmtUtils]: Spent 19.52s on a formula simplification. DAG size of input: 566 DAG size of output: 450 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:00:54,051 WARN L234 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 584 DAG size of output: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:01:05,333 WARN L234 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 591 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:01:45,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:01:45,590 INFO L93 Difference]: Finished difference Result 950 states and 1464 transitions. [2022-11-03 03:01:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-03 03:01:45,591 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 03:01:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:01:45,595 INFO L225 Difference]: With dead ends: 950 [2022-11-03 03:01:45,595 INFO L226 Difference]: Without dead ends: 636 [2022-11-03 03:01:45,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 278.7s TimeCoverageRelationStatistics Valid=279, Invalid=5421, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 03:01:45,599 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 292 mSDsluCounter, 6443 mSDsCounter, 0 mSdLazyCounter, 8582 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 8629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 8582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:01:45,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 6527 Invalid, 8629 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [47 Valid, 8582 Invalid, 0 Unknown, 0 Unchecked, 35.3s Time] [2022-11-03 03:01:45,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-03 03:01:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 504. [2022-11-03 03:01:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 354 states have (on average 1.4830508474576272) internal successors, (525), 361 states have internal predecessors, (525), 118 states have call successors, (118), 33 states have call predecessors, (118), 31 states have return successors, (118), 111 states have call predecessors, (118), 117 states have call successors, (118) [2022-11-03 03:01:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 761 transitions. [2022-11-03 03:01:45,841 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 761 transitions. Word has length 92 [2022-11-03 03:01:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:01:45,841 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 761 transitions. [2022-11-03 03:01:45,842 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 03:01:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 761 transitions. [2022-11-03 03:01:45,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 03:01:45,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:01:45,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:01:45,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:01:46,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:01:46,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:01:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:01:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1526476113, now seen corresponding path program 1 times [2022-11-03 03:01:46,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:01:46,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6677878] [2022-11-03 03:01:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:01:46,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:01:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:01:46,219 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 03:01:46,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:01:46,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6677878] [2022-11-03 03:01:46,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6677878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:01:46,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451533077] [2022-11-03 03:01:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:01:46,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:01:46,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:01:46,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:01:46,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b75c607-7e19-4f95-a9b3-8bdf6992b90b/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:01:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:01:46,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:01:46,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:01:46,597 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 03:01:46,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:01:46,695 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 03:01:46,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451533077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:01:46,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [986812929] [2022-11-03 03:01:46,703 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-03 03:01:46,703 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:01:46,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:01:46,704 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:01:46,704 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:02:47,831 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 03:02:48,162 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-03 03:02:48,227 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 259 for LOIs [2022-11-03 03:02:48,306 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 454 for LOIs [2022-11-03 03:02:48,669 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-03 03:02:48,982 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:03:03,710 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:03:10,314 WARN L234 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:03:31,226 WARN L234 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)