./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur --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 a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 --- 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-38b53e6 [2022-11-25 23:54:01,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:54:01,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:54:01,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:54:01,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:54:01,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:54:01,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:54:01,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:54:01,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:54:01,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:54:01,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:54:01,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:54:01,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:54:01,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:54:01,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:54:01,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:54:01,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:54:01,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:54:01,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:54:01,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:54:01,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:54:01,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:54:01,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:54:01,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:54:01,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:54:01,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:54:01,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:54:01,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:54:01,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:54:01,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:54:01,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:54:01,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:54:01,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:54:01,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:54:01,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:54:01,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:54:01,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:54:01,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:54:01,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:54:01,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:54:01,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:54:01,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:54:01,892 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:54:01,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:54:01,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:54:01,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:54:01,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:54:01,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:54:01,895 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:54:01,896 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:54:01,896 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:54:01,896 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:54:01,897 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:54:01,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:54:01,898 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:54:01,898 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:54:01,899 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:54:01,899 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:54:01,899 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:54:01,899 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:54:01,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:54:01,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:54:01,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:54:01,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:54:01,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:54:01,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:54:01,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:54:01,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:54:01,903 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:54:01,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:54:01,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:54:01,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:54:01,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:54:01,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:54:01,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:54:01,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:54:01,905 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:54:01,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:54:01,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:54:01,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:54:01,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:54:01,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:54:01,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:54:01,907 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_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e94d21677d8e787ff51041171bb0d6a97c638f1cb1f2181c1b14c15718344 [2022-11-25 23:54:02,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:54:02,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:54:02,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:54:02,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:54:02,227 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:54:02,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2022-11-25 23:54:05,302 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:54:05,705 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:54:05,705 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c [2022-11-25 23:54:05,740 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/data/ffa9f0c26/561b9862e7fe4743985d7c5f7f1327fd/FLAGee4284afb [2022-11-25 23:54:05,759 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/data/ffa9f0c26/561b9862e7fe4743985d7c5f7f1327fd [2022-11-25 23:54:05,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:54:05,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:54:05,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:54:05,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:54:05,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:54:05,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:54:05" (1/1) ... [2022-11-25 23:54:05,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66428bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:05, skipping insertion in model container [2022-11-25 23:54:05,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:54:05" (1/1) ... [2022-11-25 23:54:05,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:54:05,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:54:06,323 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,336 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,337 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,344 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,373 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,375 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,428 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,430 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,434 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,442 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_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2022-11-25 23:54:06,488 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,490 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:54:06,601 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:54:06,659 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,663 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,666 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,669 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,675 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,689 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,692 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,701 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,704 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,708 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_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/sv-benchmarks/c/product-lines/email_spec9_productSimulator.cil.c[31629,31642] [2022-11-25 23:54:06,765 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,767 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:54:06,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:54:06,859 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:54:06,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06 WrapperNode [2022-11-25 23:54:06,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:54:06,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:54:06,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:54:06,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:54:06,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:06,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:06,958 INFO L138 Inliner]: procedures = 152, calls = 288, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1326 [2022-11-25 23:54:06,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:54:06,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:54:06,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:54:06,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:54:06,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:06,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:06,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:06,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:06,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:07,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:07,028 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:07,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:07,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:54:07,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:54:07,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:54:07,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:54:07,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (1/1) ... [2022-11-25 23:54:07,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:54:07,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:07,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:54:07,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:54:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-25 23:54:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-25 23:54:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-25 23:54:07,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-25 23:54:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-25 23:54:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-25 23:54:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-25 23:54:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-25 23:54:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-25 23:54:07,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-25 23:54:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-25 23:54:07,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-25 23:54:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-25 23:54:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-25 23:54:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-25 23:54:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-25 23:54:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-25 23:54:07,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-25 23:54:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-25 23:54:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-25 23:54:07,161 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-25 23:54:07,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-25 23:54:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-25 23:54:07,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-25 23:54:07,162 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-25 23:54:07,163 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-25 23:54:07,163 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-25 23:54:07,164 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-25 23:54:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-25 23:54:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-25 23:54:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-25 23:54:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-25 23:54:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-25 23:54:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-25 23:54:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-25 23:54:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-25 23:54:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-25 23:54:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-25 23:54:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-25 23:54:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-25 23:54:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-25 23:54:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-25 23:54:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-25 23:54:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-25 23:54:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-25 23:54:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-25 23:54:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-25 23:54:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:54:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-25 23:54:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-25 23:54:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-25 23:54:07,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-25 23:54:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-25 23:54:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-25 23:54:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-25 23:54:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-25 23:54:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-25 23:54:07,172 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-25 23:54:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-25 23:54:07,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-25 23:54:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-25 23:54:07,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-25 23:54:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-25 23:54:07,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-25 23:54:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-25 23:54:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-25 23:54:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-25 23:54:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-25 23:54:07,174 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-25 23:54:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-25 23:54:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-25 23:54:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-25 23:54:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-25 23:54:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-25 23:54:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-25 23:54:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-25 23:54:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-25 23:54:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-25 23:54:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-25 23:54:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-25 23:54:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:54:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-25 23:54:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-25 23:54:07,178 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-25 23:54:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-25 23:54:07,180 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-25 23:54:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-25 23:54:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-25 23:54:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-25 23:54:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:54:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:54:07,486 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:54:07,489 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:54:08,802 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:54:09,544 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:54:09,549 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:54:09,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:54:09 BoogieIcfgContainer [2022-11-25 23:54:09,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:54:09,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:54:09,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:54:09,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:54:09,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:54:05" (1/3) ... [2022-11-25 23:54:09,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bf3e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:54:09, skipping insertion in model container [2022-11-25 23:54:09,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:06" (2/3) ... [2022-11-25 23:54:09,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bf3e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:54:09, skipping insertion in model container [2022-11-25 23:54:09,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:54:09" (3/3) ... [2022-11-25 23:54:09,567 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_productSimulator.cil.c [2022-11-25 23:54:09,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:54:09,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:54:09,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:54:09,674 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;@6dd18e19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:54:09,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:54:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-25 23:54:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 23:54:09,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:09,698 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:09,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:09,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1968310686, now seen corresponding path program 1 times [2022-11-25 23:54:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:09,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342839334] [2022-11-25 23:54:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:54:10,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:10,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342839334] [2022-11-25 23:54:10,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342839334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:10,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:10,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:54:10,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240766727] [2022-11-25 23:54:10,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:10,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:54:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:10,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:54:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:54:10,182 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:54:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:10,438 INFO L93 Difference]: Finished difference Result 602 states and 816 transitions. [2022-11-25 23:54:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:54:10,441 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 97 [2022-11-25 23:54:10,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:10,471 INFO L225 Difference]: With dead ends: 602 [2022-11-25 23:54:10,471 INFO L226 Difference]: Without dead ends: 377 [2022-11-25 23:54:10,480 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 [2022-11-25 23:54:10,483 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:10,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:54:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-25 23:54:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-25 23:54:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.3183856502242153) internal successors, (294), 242 states have internal predecessors, (294), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-25 23:54:10,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 513 transitions. [2022-11-25 23:54:10,557 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 513 transitions. Word has length 97 [2022-11-25 23:54:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:10,559 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 513 transitions. [2022-11-25 23:54:10,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:54:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 513 transitions. [2022-11-25 23:54:10,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 23:54:10,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:10,565 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:10,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:54:10,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:10,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash 474378777, now seen corresponding path program 1 times [2022-11-25 23:54:10,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:10,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627496] [2022-11-25 23:54:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:10,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:54:10,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:10,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627496] [2022-11-25 23:54:10,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:10,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:10,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:54:10,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827381026] [2022-11-25 23:54:10,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:10,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:10,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:10,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:10,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:10,920 INFO L87 Difference]: Start difference. First operand 377 states and 513 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:54:11,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:11,106 INFO L93 Difference]: Finished difference Result 598 states and 796 transitions. [2022-11-25 23:54:11,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:11,106 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 98 [2022-11-25 23:54:11,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:11,110 INFO L225 Difference]: With dead ends: 598 [2022-11-25 23:54:11,110 INFO L226 Difference]: Without dead ends: 379 [2022-11-25 23:54:11,111 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 [2022-11-25 23:54:11,113 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:11,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 921 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:54:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-25 23:54:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2022-11-25 23:54:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 225 states have (on average 1.3155555555555556) internal successors, (296), 244 states have internal predecessors, (296), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-25 23:54:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 515 transitions. [2022-11-25 23:54:11,156 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 515 transitions. Word has length 98 [2022-11-25 23:54:11,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:11,158 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 515 transitions. [2022-11-25 23:54:11,159 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:54:11,159 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 515 transitions. [2022-11-25 23:54:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 23:54:11,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:11,168 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:11,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:54:11,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:11,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash 897570154, now seen corresponding path program 1 times [2022-11-25 23:54:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:11,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386156852] [2022-11-25 23:54:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:11,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:54:11,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:11,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386156852] [2022-11-25 23:54:11,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386156852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:11,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:11,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:54:11,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344310676] [2022-11-25 23:54:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:11,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:11,333 INFO L87 Difference]: Start difference. First operand 379 states and 515 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:54:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:11,548 INFO L93 Difference]: Finished difference Result 757 states and 1044 transitions. [2022-11-25 23:54:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2022-11-25 23:54:11,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:11,554 INFO L225 Difference]: With dead ends: 757 [2022-11-25 23:54:11,555 INFO L226 Difference]: Without dead ends: 446 [2022-11-25 23:54:11,559 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 [2022-11-25 23:54:11,563 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 84 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:11,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 931 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:54:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-25 23:54:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 441. [2022-11-25 23:54:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 273 states have (on average 1.3663003663003663) internal successors, (373), 294 states have internal predecessors, (373), 124 states have call successors, (124), 43 states have call predecessors, (124), 43 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2022-11-25 23:54:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 620 transitions. [2022-11-25 23:54:11,611 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 620 transitions. Word has length 103 [2022-11-25 23:54:11,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:11,612 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 620 transitions. [2022-11-25 23:54:11,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:54:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 620 transitions. [2022-11-25 23:54:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-25 23:54:11,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:11,615 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:11,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:54:11,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1577221936, now seen corresponding path program 1 times [2022-11-25 23:54:11,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:11,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740288144] [2022-11-25 23:54:11,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:11,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:54:11,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:11,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740288144] [2022-11-25 23:54:11,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740288144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:54:11,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885154561] [2022-11-25 23:54:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:11,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:11,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:11,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:11,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:54:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:12,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:54:12,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 23:54:12,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:54:12,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885154561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:12,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:54:12,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 23:54:12,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704983613] [2022-11-25 23:54:12,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:12,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:12,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:12,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:12,560 INFO L87 Difference]: Start difference. First operand 441 states and 620 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 23:54:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:12,704 INFO L93 Difference]: Finished difference Result 859 states and 1224 transitions. [2022-11-25 23:54:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:12,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 104 [2022-11-25 23:54:12,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:12,711 INFO L225 Difference]: With dead ends: 859 [2022-11-25 23:54:12,713 INFO L226 Difference]: Without dead ends: 439 [2022-11-25 23:54:12,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:54:12,722 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 420 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:12,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 447 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:54:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-25 23:54:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-11-25 23:54:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 273 states have (on average 1.3443223443223444) internal successors, (367), 292 states have internal predecessors, (367), 121 states have call successors, (121), 44 states have call predecessors, (121), 44 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-25 23:54:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2022-11-25 23:54:12,754 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 104 [2022-11-25 23:54:12,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:12,755 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2022-11-25 23:54:12,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 23:54:12,756 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2022-11-25 23:54:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 23:54:12,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:12,759 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:12,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:54:12,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:12,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:54:12,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:12,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1981110176, now seen corresponding path program 1 times [2022-11-25 23:54:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:12,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819958980] [2022-11-25 23:54:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:54:13,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:13,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819958980] [2022-11-25 23:54:13,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819958980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:54:13,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089774207] [2022-11-25 23:54:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:13,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:13,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:13,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:13,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:54:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:13,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:54:13,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:54:13,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:54:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:54:13,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089774207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:54:13,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [241593957] [2022-11-25 23:54:13,738 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-25 23:54:13,738 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:54:13,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:54:13,747 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:54:13,748 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:54:28,685 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-25 23:54:29,044 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:54:37,000 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:54:42,806 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:55:24,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [241593957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:24,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:55:24,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [4, 4, 4] total 28 [2022-11-25 23:55:24,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559159020] [2022-11-25 23:55:24,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:24,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 23:55:24,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:24,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 23:55:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-25 23:55:24,895 INFO L87 Difference]: Start difference. First operand 439 states and 608 transitions. Second operand has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-25 23:55:32,935 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:55:41,023 WARN L233 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:55:49,214 WARN L233 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:55:57,391 WARN L233 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:56:05,597 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:56:13,857 WARN L233 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:56:22,165 WARN L233 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:56:30,477 WARN L233 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:56:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:56:44,611 INFO L93 Difference]: Finished difference Result 874 states and 1200 transitions. [2022-11-25 23:56:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-25 23:56:44,612 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 113 [2022-11-25 23:56:44,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:56:44,615 INFO L225 Difference]: With dead ends: 874 [2022-11-25 23:56:44,615 INFO L226 Difference]: Without dead ends: 467 [2022-11-25 23:56:44,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 128.9s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 23:56:44,618 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 110 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:56:44,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2557 Invalid, 1209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-25 23:56:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-25 23:56:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 459. [2022-11-25 23:56:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 287 states have (on average 1.3344947735191637) internal successors, (383), 306 states have internal predecessors, (383), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-25 23:56:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 624 transitions. [2022-11-25 23:56:44,707 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 624 transitions. Word has length 113 [2022-11-25 23:56:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:56:44,708 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 624 transitions. [2022-11-25 23:56:44,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-25 23:56:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 624 transitions. [2022-11-25 23:56:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 23:56:44,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:56:44,711 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:56:44,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:56:44,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:44,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:56:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:56:44,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1483523218, now seen corresponding path program 1 times [2022-11-25 23:56:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:56:44,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604030015] [2022-11-25 23:56:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:44,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:56:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:56:45,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:56:45,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604030015] [2022-11-25 23:56:45,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604030015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:56:45,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834912613] [2022-11-25 23:56:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:56:45,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:56:45,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:56:45,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:56:45,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:56:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:56:45,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:56:45,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:56:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:56:45,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:56:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-25 23:56:45,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834912613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:56:45,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [648885330] [2022-11-25 23:56:45,597 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2022-11-25 23:56:45,597 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:56:45,597 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:56:45,598 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:56:45,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:56:59,940 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-25 23:57:00,240 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:57:07,816 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:57:13,574 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:57:58,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [648885330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:57:58,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:57:58,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-25 23:57:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126358766] [2022-11-25 23:57:58,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:57:58,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 23:57:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:57:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 23:57:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-11-25 23:57:58,040 INFO L87 Difference]: Start difference. First operand 459 states and 624 transitions. Second operand has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-25 23:58:06,141 WARN L233 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:58:14,357 WARN L233 SmtUtils]: Spent 7.91s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:58:22,598 WARN L233 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:58:30,816 WARN L233 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:58:39,082 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:58:47,394 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:58:55,703 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:59:03,947 WARN L233 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:59:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:59:10,431 INFO L93 Difference]: Finished difference Result 867 states and 1186 transitions. [2022-11-25 23:59:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 23:59:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 117 [2022-11-25 23:59:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:59:10,434 INFO L225 Difference]: With dead ends: 867 [2022-11-25 23:59:10,434 INFO L226 Difference]: Without dead ends: 451 [2022-11-25 23:59:10,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 122.2s TimeCoverageRelationStatistics Valid=218, Invalid=1114, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 23:59:10,437 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 34 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:59:10,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3980 Invalid, 1509 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-25 23:59:10,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-25 23:59:10,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-11-25 23:59:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 279 states have (on average 1.3225806451612903) internal successors, (369), 298 states have internal predecessors, (369), 121 states have call successors, (121), 50 states have call predecessors, (121), 50 states have return successors, (120), 119 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-25 23:59:10,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 610 transitions. [2022-11-25 23:59:10,513 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 610 transitions. Word has length 117 [2022-11-25 23:59:10,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:59:10,514 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 610 transitions. [2022-11-25 23:59:10,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-25 23:59:10,514 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 610 transitions. [2022-11-25 23:59:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-25 23:59:10,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:59:10,517 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:59:10,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:59:10,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:59:10,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:59:10,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:59:10,729 INFO L85 PathProgramCache]: Analyzing trace with hash 12560261, now seen corresponding path program 1 times [2022-11-25 23:59:10,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:59:10,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302434238] [2022-11-25 23:59:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:59:10,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:59:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:59:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-25 23:59:10,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:59:10,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302434238] [2022-11-25 23:59:10,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302434238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:59:10,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:59:10,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:59:10,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688898249] [2022-11-25 23:59:10,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:59:10,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:59:10,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:59:10,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:59:10,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:59:10,912 INFO L87 Difference]: Start difference. First operand 451 states and 610 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 23:59:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:59:11,119 INFO L93 Difference]: Finished difference Result 847 states and 1154 transitions. [2022-11-25 23:59:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:59:11,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2022-11-25 23:59:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:59:11,123 INFO L225 Difference]: With dead ends: 847 [2022-11-25 23:59:11,123 INFO L226 Difference]: Without dead ends: 448 [2022-11-25 23:59:11,124 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 [2022-11-25 23:59:11,125 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 443 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:59:11,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 442 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:59:11,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-25 23:59:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-25 23:59:11,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 279 states have (on average 1.2580645161290323) internal successors, (351), 291 states have internal predecessors, (351), 118 states have call successors, (118), 50 states have call predecessors, (118), 50 states have return successors, (117), 116 states have call predecessors, (117), 117 states have call successors, (117) [2022-11-25 23:59:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 586 transitions. [2022-11-25 23:59:11,229 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 586 transitions. Word has length 119 [2022-11-25 23:59:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:59:11,229 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 586 transitions. [2022-11-25 23:59:11,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 23:59:11,230 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 586 transitions. [2022-11-25 23:59:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-25 23:59:11,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:59:11,232 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:59:11,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:59:11,233 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:59:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:59:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash 571186167, now seen corresponding path program 1 times [2022-11-25 23:59:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:59:11,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3299823] [2022-11-25 23:59:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:59:11,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:59:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:59:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 23:59:11,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:59:11,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3299823] [2022-11-25 23:59:11,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3299823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:59:11,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125250300] [2022-11-25 23:59:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:59:11,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:59:11,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:59:11,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:59:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:59:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:59:11,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:59:11,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:59:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 23:59:11,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:59:11,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125250300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:59:11,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:59:11,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 23:59:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672267462] [2022-11-25 23:59:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:59:11,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:59:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:59:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:59:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:59:11,918 INFO L87 Difference]: Start difference. First operand 448 states and 586 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-25 23:59:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:59:12,263 INFO L93 Difference]: Finished difference Result 1246 states and 1677 transitions. [2022-11-25 23:59:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:59:12,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 131 [2022-11-25 23:59:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:59:12,268 INFO L225 Difference]: With dead ends: 1246 [2022-11-25 23:59:12,268 INFO L226 Difference]: Without dead ends: 843 [2022-11-25 23:59:12,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:59:12,271 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 392 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:59:12,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 949 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:59:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-25 23:59:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-25 23:59:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 527 states have (on average 1.2618595825426946) internal successors, (665), 547 states have internal predecessors, (665), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-11-25 23:59:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1119 transitions. [2022-11-25 23:59:12,417 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1119 transitions. Word has length 131 [2022-11-25 23:59:12,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:59:12,418 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1119 transitions. [2022-11-25 23:59:12,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-25 23:59:12,419 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1119 transitions. [2022-11-25 23:59:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-25 23:59:12,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:59:12,422 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:59:12,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:59:12,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:59:12,630 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:59:12,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:59:12,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1495676108, now seen corresponding path program 1 times [2022-11-25 23:59:12,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:59:12,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045974206] [2022-11-25 23:59:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:59:12,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:59:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:59:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 23:59:12,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:59:12,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045974206] [2022-11-25 23:59:12,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045974206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:59:12,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232109524] [2022-11-25 23:59:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:59:12,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:59:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:59:12,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:59:12,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:59:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:59:13,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:59:13,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:59:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 23:59:13,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:59:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 23:59:13,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232109524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:59:13,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015456568] [2022-11-25 23:59:13,306 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2022-11-25 23:59:13,306 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:59:13,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:59:13,307 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:59:13,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:59:25,645 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-25 23:59:25,939 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:59:33,631 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:59:39,392 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:00:31,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2015456568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:31,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:00:31,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [4, 4, 4] total 32 [2022-11-26 00:00:31,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022860355] [2022-11-26 00:00:31,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:31,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-26 00:00:31,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:31,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-26 00:00:31,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:00:31,212 INFO L87 Difference]: Start difference. First operand 841 states and 1119 transitions. Second operand has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-11-26 00:00:39,367 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 672 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:00:47,839 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 671 DAG size of output: 530 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:00:56,281 WARN L233 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 670 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:01:05,369 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 669 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:01:14,063 WARN L233 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 668 DAG size of output: 536 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:01:22,557 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 667 DAG size of output: 538 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:01:31,290 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 666 DAG size of output: 540 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:01:39,854 WARN L233 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 665 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:01:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:43,389 INFO L93 Difference]: Finished difference Result 1635 states and 2185 transitions. [2022-11-26 00:01:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-26 00:01:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 132 [2022-11-26 00:01:43,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:43,394 INFO L225 Difference]: With dead ends: 1635 [2022-11-26 00:01:43,394 INFO L226 Difference]: Without dead ends: 840 [2022-11-26 00:01:43,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 132.5s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 00:01:43,397 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 72 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:43,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1804 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-26 00:01:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-26 00:01:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2022-11-26 00:01:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 526 states have (on average 1.2566539923954372) internal successors, (661), 546 states have internal predecessors, (661), 221 states have call successors, (221), 92 states have call predecessors, (221), 92 states have return successors, (233), 218 states have call predecessors, (233), 219 states have call successors, (233) [2022-11-26 00:01:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1115 transitions. [2022-11-26 00:01:43,530 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1115 transitions. Word has length 132 [2022-11-26 00:01:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:43,531 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1115 transitions. [2022-11-26 00:01:43,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 17 states have internal predecessors, (68), 9 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-11-26 00:01:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1115 transitions. [2022-11-26 00:01:43,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-26 00:01:43,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:43,534 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:43,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-26 00:01:43,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:01:43,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2131341341, now seen corresponding path program 1 times [2022-11-26 00:01:43,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:43,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021866129] [2022-11-26 00:01:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-26 00:01:43,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:43,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021866129] [2022-11-26 00:01:43,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021866129] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:01:43,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198467772] [2022-11-26 00:01:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:01:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:01:43,931 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:01:43,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c02c7a2b-fa42-4a9c-9b9c-16fd144ae9df/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:01:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:44,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:01:44,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:01:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-26 00:01:44,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:01:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-26 00:01:44,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198467772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:01:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1521596407] [2022-11-26 00:01:44,453 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-11-26 00:01:44,454 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:01:44,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:01:44,454 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:01:44,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:03:45,786 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 510 for LOIs [2022-11-26 00:03:47,030 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 516 for LOIs [2022-11-26 00:03:48,566 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 279 for LOIs [2022-11-26 00:03:50,607 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 458 for LOIs [2022-11-26 00:03:50,973 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 250 for LOIs [2022-11-26 00:03:51,778 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 445 for LOIs [2022-11-26 00:03:52,074 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 247 for LOIs [2022-11-26 00:03:52,117 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 443 for LOIs [2022-11-26 00:03:52,408 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 281 for LOIs [2022-11-26 00:03:52,556 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 269 for LOIs [2022-11-26 00:03:52,704 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 267 for LOIs [2022-11-26 00:03:58,717 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 453 for LOIs [2022-11-26 00:04:03,184 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 468 for LOIs [2022-11-26 00:04:05,107 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 251 for LOIs [2022-11-26 00:04:05,185 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-11-26 00:04:05,221 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:04:13,150 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 458 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:04:19,123 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 466 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:05:46,660 WARN L233 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 750 DAG size of output: 518 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:05,622 WARN L233 SmtUtils]: Spent 11.70s on a formula simplification. DAG size of input: 739 DAG size of output: 555 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:15,891 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 745 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:24,034 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 749 DAG size of output: 528 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:44,959 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 516 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:51,662 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 560 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:57,798 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 562 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:05,364 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 562 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:11,838 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 563 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:18,268 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 567 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)