./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 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/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_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9 --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-6b4ec56 [2022-11-20 20:12:58,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:12:58,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:12:58,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:12:58,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:12:59,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:12:59,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:12:59,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:12:59,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:12:59,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:12:59,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:12:59,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:12:59,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:12:59,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:12:59,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:12:59,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:12:59,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:12:59,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:12:59,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:12:59,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:12:59,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:12:59,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:12:59,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:12:59,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:12:59,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:12:59,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:12:59,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:12:59,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:12:59,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:12:59,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:12:59,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:12:59,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:12:59,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:12:59,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:12:59,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:12:59,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:12:59,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:12:59,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:12:59,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:12:59,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:12:59,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:12:59,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:12:59,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:12:59,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:12:59,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:12:59,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:12:59,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:12:59,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:12:59,079 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:12:59,079 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:12:59,080 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:12:59,080 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:12:59,081 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:12:59,081 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:12:59,081 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:12:59,082 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:12:59,082 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:12:59,082 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:12:59,083 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:12:59,083 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:12:59,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:12:59,084 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:12:59,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:12:59,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:12:59,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:12:59,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:12:59,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:12:59,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:12:59,086 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:12:59,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:12:59,087 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:12:59,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:12:59,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:12:59,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:12:59,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:12:59,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:12:59,089 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:12:59,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:12:59,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:12:59,090 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:12:59,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:12:59,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:12:59,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:12:59,091 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_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfdffd5743ab46e6f5628bffe82029f1c91fa1aa61e5033c157235a6e9c82be [2022-11-20 20:12:59,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:12:59,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:12:59,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:12:59,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:12:59,439 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:12:59,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec6_product14.cil.c [2022-11-20 20:13:02,860 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:13:03,273 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:13:03,274 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c [2022-11-20 20:13:03,310 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/data/dfb27218e/a85674b8af194726940436f58fbc73de/FLAG3ea2e509e [2022-11-20 20:13:03,334 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/data/dfb27218e/a85674b8af194726940436f58fbc73de [2022-11-20 20:13:03,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:13:03,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:13:03,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:13:03,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:13:03,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:13:03,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:13:03" (1/1) ... [2022-11-20 20:13:03,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b6fd5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:03, skipping insertion in model container [2022-11-20 20:13:03,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:13:03" (1/1) ... [2022-11-20 20:13:03,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:13:03,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:13:03,996 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c[43937,43950] [2022-11-20 20:13:04,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:13:04,131 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:13:04,219 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/sv-benchmarks/c/product-lines/email_spec6_product14.cil.c[43937,43950] [2022-11-20 20:13:04,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:13:04,332 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:13:04,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04 WrapperNode [2022-11-20 20:13:04,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:13:04,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:13:04,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:13:04,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:13:04,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,431 INFO L138 Inliner]: procedures = 126, calls = 212, calls flagged for inlining = 49, calls inlined = 41, statements flattened = 878 [2022-11-20 20:13:04,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:13:04,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:13:04,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:13:04,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:13:04,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,511 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:13:04,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:13:04,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:13:04,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:13:04,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (1/1) ... [2022-11-20 20:13:04,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:13:04,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:13:04,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:13:04,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:13:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:13:04,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:13:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 20:13:04,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 20:13:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:13:04,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:13:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 20:13:04,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 20:13:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:13:04,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:13:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:13:04,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:13:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:13:04,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:13:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:13:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:13:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:13:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:13:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:13:04,648 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:13:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:13:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:13:04,650 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:13:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:13:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:13:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:13:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 20:13:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 20:13:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:13:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:13:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:13:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:13:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:13:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:13:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2022-11-20 20:13:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2022-11-20 20:13:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:13:04,655 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:13:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:13:04,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:13:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:13:04,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:13:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:13:04,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:13:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:13:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:13:04,657 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:13:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 20:13:04,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 20:13:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:13:04,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:13:04,885 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:13:04,887 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:13:05,973 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:13:06,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:13:06,693 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:13:06,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:13:06 BoogieIcfgContainer [2022-11-20 20:13:06,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:13:06,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:13:06,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:13:06,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:13:06,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:13:03" (1/3) ... [2022-11-20 20:13:06,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c796bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:13:06, skipping insertion in model container [2022-11-20 20:13:06,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:04" (2/3) ... [2022-11-20 20:13:06,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c796bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:13:06, skipping insertion in model container [2022-11-20 20:13:06,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:13:06" (3/3) ... [2022-11-20 20:13:06,708 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product14.cil.c [2022-11-20 20:13:06,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:13:06,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:13:06,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:13:06,830 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;@271bac39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:13:06,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:13:06,836 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) [2022-11-20 20:13:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 20:13:06,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:06,852 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] [2022-11-20 20:13:06,853 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1647363356, now seen corresponding path program 1 times [2022-11-20 20:13:06,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:06,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328577224] [2022-11-20 20:13:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:06,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:13:07,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:07,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328577224] [2022-11-20 20:13:07,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328577224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:13:07,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:13:07,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:13:07,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84332013] [2022-11-20 20:13:07,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:13:07,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:13:07,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:13:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:13:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:13:07,478 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) [2022-11-20 20:13:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:13:07,688 INFO L93 Difference]: Finished difference Result 278 states and 371 transitions. [2022-11-20 20:13:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:13:07,695 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 [2022-11-20 20:13:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:13:07,716 INFO L225 Difference]: With dead ends: 278 [2022-11-20 20:13:07,716 INFO L226 Difference]: Without dead ends: 182 [2022-11-20 20:13:07,732 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 [2022-11-20 20:13:07,738 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 [2022-11-20 20:13:07,741 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] [2022-11-20 20:13:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-20 20:13:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-20 20:13:07,809 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) [2022-11-20 20:13:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 243 transitions. [2022-11-20 20:13:07,814 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 243 transitions. Word has length 79 [2022-11-20 20:13:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:13:07,816 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 243 transitions. [2022-11-20 20:13:07,817 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) [2022-11-20 20:13:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 243 transitions. [2022-11-20 20:13:07,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 20:13:07,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:07,824 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] [2022-11-20 20:13:07,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:13:07,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:07,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -87781500, now seen corresponding path program 1 times [2022-11-20 20:13:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:07,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134498699] [2022-11-20 20:13:07,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:07,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:13:08,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:08,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134498699] [2022-11-20 20:13:08,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134498699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:13:08,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:13:08,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:13:08,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196017408] [2022-11-20 20:13:08,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:13:08,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:13:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:13:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:13:08,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:13:08,245 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) [2022-11-20 20:13:08,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:13:08,425 INFO L93 Difference]: Finished difference Result 274 states and 356 transitions. [2022-11-20 20:13:08,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:13:08,426 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 [2022-11-20 20:13:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:13:08,429 INFO L225 Difference]: With dead ends: 274 [2022-11-20 20:13:08,429 INFO L226 Difference]: Without dead ends: 184 [2022-11-20 20:13:08,430 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 [2022-11-20 20:13:08,432 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 211 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 [2022-11-20 20:13:08,433 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] [2022-11-20 20:13:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-20 20:13:08,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-20 20:13:08,453 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) [2022-11-20 20:13:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 245 transitions. [2022-11-20 20:13:08,456 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 245 transitions. Word has length 80 [2022-11-20 20:13:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:13:08,457 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 245 transitions. [2022-11-20 20:13:08,457 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) [2022-11-20 20:13:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 245 transitions. [2022-11-20 20:13:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 20:13:08,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:08,461 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] [2022-11-20 20:13:08,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:13:08,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash -358896681, now seen corresponding path program 1 times [2022-11-20 20:13:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:08,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076586120] [2022-11-20 20:13:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:13:08,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:08,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076586120] [2022-11-20 20:13:08,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076586120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:13:08,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:13:08,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:13:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132622240] [2022-11-20 20:13:08,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:13:08,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:13:08,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:13:08,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:13:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:13:08,629 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) [2022-11-20 20:13:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:13:08,745 INFO L93 Difference]: Finished difference Result 403 states and 557 transitions. [2022-11-20 20:13:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:13:08,746 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 [2022-11-20 20:13:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:13:08,749 INFO L225 Difference]: With dead ends: 403 [2022-11-20 20:13:08,749 INFO L226 Difference]: Without dead ends: 237 [2022-11-20 20:13:08,750 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 [2022-11-20 20:13:08,751 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 59 mSDsluCounter, 207 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 [2022-11-20 20:13:08,752 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] [2022-11-20 20:13:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-20 20:13:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 232. [2022-11-20 20:13:08,774 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) [2022-11-20 20:13:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 328 transitions. [2022-11-20 20:13:08,777 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 328 transitions. Word has length 85 [2022-11-20 20:13:08,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:13:08,777 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 328 transitions. [2022-11-20 20:13:08,778 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) [2022-11-20 20:13:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 328 transitions. [2022-11-20 20:13:08,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 20:13:08,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:08,785 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] [2022-11-20 20:13:08,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:13:08,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:08,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash 541625859, now seen corresponding path program 1 times [2022-11-20 20:13:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:08,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450106680] [2022-11-20 20:13:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:13:09,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:09,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450106680] [2022-11-20 20:13:09,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450106680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:13:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356395460] [2022-11-20 20:13:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:09,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:13:09,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:13:09,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:13:09,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:13:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:09,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:13:09,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:13:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:13:09,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:13:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:13:09,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356395460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:13:09,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1266925390] [2022-11-20 20:13:09,753 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-20 20:13:09,757 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:13:09,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:13:09,771 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:13:09,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:13:39,865 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-20 20:13:40,159 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-11-20 20:13:41,846 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-11-20 20:13:41,885 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 20:13:42,187 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-11-20 20:13:42,991 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 253 for LOIs [2022-11-20 20:13:52,773 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 238 for LOIs [2022-11-20 20:13:52,809 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 481 for LOIs [2022-11-20 20:13:57,759 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 242 for LOIs [2022-11-20 20:13:57,800 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 230 for LOIs [2022-11-20 20:13:57,836 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:14:33,007 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:14:40,976 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 490 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:14:51,906 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 512 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:13,128 WARN L233 SmtUtils]: Spent 20.89s on a formula simplification. DAG size of input: 581 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:25,245 WARN L233 SmtUtils]: Spent 11.69s on a formula simplification. DAG size of input: 583 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:48,036 WARN L233 SmtUtils]: Spent 14.69s on a formula simplification. DAG size of input: 476 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:56,167 WARN L233 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 498 DAG size of output: 267 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:25,696 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 466 DAG size of output: 309 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:44,869 WARN L233 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 555 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:51,014 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 556 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:59,793 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 564 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:02,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1266925390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:17:02,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:17:02,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-11-20 20:17:02,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771436747] [2022-11-20 20:17:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:17:02,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-20 20:17:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:17:02,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-20 20:17:02,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3042, Unknown=0, NotChecked=0, Total=3192 [2022-11-20 20:17:02,340 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) [2022-11-20 20:17:18,606 WARN L233 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 577 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:31,094 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification. DAG size of input: 584 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:18:08,276 INFO L93 Difference]: Finished difference Result 596 states and 895 transitions. [2022-11-20 20:18:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 20:18:08,277 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 [2022-11-20 20:18:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:18:08,281 INFO L225 Difference]: With dead ends: 596 [2022-11-20 20:18:08,281 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 20:18:08,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 218.8s TimeCoverageRelationStatistics Valid=193, Invalid=3839, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 20:18:08,284 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 195 mSDsluCounter, 5731 mSDsCounter, 0 mSdLazyCounter, 7348 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 7372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 7348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:18:08,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 5984 Invalid, 7372 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [24 Valid, 7348 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2022-11-20 20:18:08,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 20:18:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 329. [2022-11-20 20:18:08,472 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) [2022-11-20 20:18:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 470 transitions. [2022-11-20 20:18:08,474 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 470 transitions. Word has length 86 [2022-11-20 20:18:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:18:08,475 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 470 transitions. [2022-11-20 20:18:08,476 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) [2022-11-20 20:18:08,476 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 470 transitions. [2022-11-20 20:18:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 20:18:08,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:18:08,479 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] [2022-11-20 20:18:08,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:18:08,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:18:08,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:18:08,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:18:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2100549005, now seen corresponding path program 1 times [2022-11-20 20:18:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:18:08,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069940469] [2022-11-20 20:18:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:18:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:18:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:18:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:18:08,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:18:08,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069940469] [2022-11-20 20:18:08,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069940469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:18:08,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:18:08,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:18:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805383483] [2022-11-20 20:18:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:18:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:18:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:18:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:18:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:18:08,814 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) [2022-11-20 20:18:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:18:09,197 INFO L93 Difference]: Finished difference Result 782 states and 1162 transitions. [2022-11-20 20:18:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:18:09,198 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 [2022-11-20 20:18:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:18:09,201 INFO L225 Difference]: With dead ends: 782 [2022-11-20 20:18:09,201 INFO L226 Difference]: Without dead ends: 479 [2022-11-20 20:18:09,202 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 [2022-11-20 20:18:09,203 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 57 mSDsluCounter, 212 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 [2022-11-20 20:18:09,204 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] [2022-11-20 20:18:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-20 20:18:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 472. [2022-11-20 20:18:09,423 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) [2022-11-20 20:18:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 713 transitions. [2022-11-20 20:18:09,427 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 713 transitions. Word has length 91 [2022-11-20 20:18:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:18:09,427 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 713 transitions. [2022-11-20 20:18:09,427 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) [2022-11-20 20:18:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 713 transitions. [2022-11-20 20:18:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 20:18:09,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:18:09,431 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] [2022-11-20 20:18:09,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:18:09,432 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:18:09,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:18:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1312213214, now seen corresponding path program 1 times [2022-11-20 20:18:09,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:18:09,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673303644] [2022-11-20 20:18:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:18:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:18:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:18:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:18:09,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:18:09,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673303644] [2022-11-20 20:18:09,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673303644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:18:09,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901189106] [2022-11-20 20:18:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:18:09,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:18:09,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:18:09,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:18:09,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:18:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:18:09,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:18:09,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:18:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:18:09,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:18:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:18:10,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901189106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:18:10,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [981893295] [2022-11-20 20:18:10,043 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-20 20:18:10,043 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:18:10,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:18:10,044 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:18:10,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:18:46,031 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-20 20:18:46,328 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 251 for LOIs [2022-11-20 20:18:47,901 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-20 20:18:47,954 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 20:18:48,244 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 251 for LOIs [2022-11-20 20:18:49,039 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__Encrypt with input of size 252 for LOIs [2022-11-20 20:18:56,881 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 447 for LOIs [2022-11-20 20:18:57,494 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-20 20:18:59,557 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 241 for LOIs [2022-11-20 20:18:59,605 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 227 for LOIs [2022-11-20 20:18:59,643 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:19:26,978 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 468 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:37,481 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:45,766 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 490 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:16,926 WARN L233 SmtUtils]: Spent 20.09s on a formula simplification. DAG size of input: 587 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:28,032 WARN L233 SmtUtils]: Spent 10.77s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:46,780 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 475 DAG size of output: 260 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:23,444 WARN L233 SmtUtils]: Spent 12.67s on a formula simplification. DAG size of input: 447 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:36,961 WARN L233 SmtUtils]: Spent 12.85s on a formula simplification. DAG size of input: 466 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:21:42,834 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 465 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:01,413 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 554 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:15,316 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 565 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:19,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [981893295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:22:19,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:22:19,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [4, 4, 4] total 61 [2022-11-20 20:22:19,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811216994] [2022-11-20 20:22:19,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:22:19,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-20 20:22:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:22:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-20 20:22:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3488, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 20:22:19,538 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) [2022-11-20 20:22:41,613 WARN L233 SmtUtils]: Spent 18.68s on a formula simplification. DAG size of input: 566 DAG size of output: 450 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:13,583 WARN L233 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 584 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:24,928 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 591 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:04,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:24:04,890 INFO L93 Difference]: Finished difference Result 950 states and 1464 transitions. [2022-11-20 20:24:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-20 20:24:04,891 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 [2022-11-20 20:24:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:24:04,895 INFO L225 Difference]: With dead ends: 950 [2022-11-20 20:24:04,895 INFO L226 Difference]: Without dead ends: 636 [2022-11-20 20:24:04,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 268.9s TimeCoverageRelationStatistics Valid=279, Invalid=5421, Unknown=0, NotChecked=0, Total=5700 [2022-11-20 20:24:04,899 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 299 mSDsluCounter, 6265 mSDsCounter, 0 mSdLazyCounter, 8582 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 8622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 8582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:24:04,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 6527 Invalid, 8622 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [40 Valid, 8582 Invalid, 0 Unknown, 0 Unchecked, 35.5s Time] [2022-11-20 20:24:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-20 20:24:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 504. [2022-11-20 20:24:05,156 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) [2022-11-20 20:24:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 761 transitions. [2022-11-20 20:24:05,160 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 761 transitions. Word has length 92 [2022-11-20 20:24:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:24:05,160 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 761 transitions. [2022-11-20 20:24:05,161 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) [2022-11-20 20:24:05,161 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 761 transitions. [2022-11-20 20:24:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 20:24:05,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:24:05,164 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] [2022-11-20 20:24:05,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:24:05,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:24:05,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:24:05,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:24:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1526476113, now seen corresponding path program 1 times [2022-11-20 20:24:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:24:05,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230566575] [2022-11-20 20:24:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:24:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:24:05,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:24:05,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230566575] [2022-11-20 20:24:05,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230566575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:24:05,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953831593] [2022-11-20 20:24:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:24:05,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:24:05,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:24:05,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:24:05,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3474a092-fa43-4d89-8fa6-e5d4d51ec5f4/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:24:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:24:05,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:24:05,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:24:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:24:06,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:24:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:24:06,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953831593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:24:06,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [224485349] [2022-11-20 20:24:06,104 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-20 20:24:06,105 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:24:06,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:24:06,105 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:24:06,106 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:25:00,747 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:25:01,028 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-20 20:25:01,091 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 259 for LOIs [2022-11-20 20:25:01,164 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 454 for LOIs [2022-11-20 20:25:01,486 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 20:25:01,780 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:25:19,444 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:25:37,528 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 480 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:25:45,494 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 490 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:11,098 WARN L233 SmtUtils]: Spent 14.78s on a formula simplification. DAG size of input: 623 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:22,157 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 573 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:30,301 WARN L233 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 575 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)