./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW --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 bad89116a36bb46e02a3fc807805b2b6d03550190d8073d361f25c2754b15f25 --- 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-4e7fbc6 [2022-11-23 15:02:36,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:02:36,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:02:36,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:02:36,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:02:36,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:02:36,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:02:36,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:02:36,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:02:36,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:02:36,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:02:36,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:02:36,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:02:36,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:02:36,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:02:36,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:02:36,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:02:36,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:02:36,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:02:36,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:02:36,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:02:36,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:02:36,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:02:36,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:02:36,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:02:36,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:02:36,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:02:36,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:02:36,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:02:36,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:02:36,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:02:36,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:02:36,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:02:36,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:02:36,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:02:36,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:02:36,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:02:36,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:02:36,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:02:36,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:02:36,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:02:36,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:02:36,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:02:36,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:02:36,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:02:36,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:02:36,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:02:36,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:02:36,837 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:02:36,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:02:36,837 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:02:36,837 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:02:36,839 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:02:36,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:02:36,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:02:36,840 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:02:36,840 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:02:36,840 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:02:36,840 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:02:36,841 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:02:36,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:02:36,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:02:36,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:02:36,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:02:36,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:02:36,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:02:36,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:02:36,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:02:36,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:02:36,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:02:36,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:02:36,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:02:36,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:02:36,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:02:36,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:02:36,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:02:36,846 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:02:36,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:02:36,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:02:36,848 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:02:36,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:02:36,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:02:36,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:02:36,849 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_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad89116a36bb46e02a3fc807805b2b6d03550190d8073d361f25c2754b15f25 [2022-11-23 15:02:37,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:02:37,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:02:37,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:02:37,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:02:37,216 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:02:37,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec6_product31.cil.c [2022-11-23 15:02:40,330 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:02:40,747 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:02:40,748 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/sv-benchmarks/c/product-lines/email_spec6_product31.cil.c [2022-11-23 15:02:40,768 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/data/eef44b9b8/861a4bd0c1884d16be570056ae6f2859/FLAG24fbb14c6 [2022-11-23 15:02:40,785 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/data/eef44b9b8/861a4bd0c1884d16be570056ae6f2859 [2022-11-23 15:02:40,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:02:40,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:02:40,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:02:40,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:02:40,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:02:40,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:40" (1/1) ... [2022-11-23 15:02:40,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f18309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:40, skipping insertion in model container [2022-11-23 15:02:40,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:40" (1/1) ... [2022-11-23 15:02:40,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:02:40,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:02:41,298 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_c722c8c8-f1f0-48e1-a878-0df7703ce969/sv-benchmarks/c/product-lines/email_spec6_product31.cil.c[31008,31021] [2022-11-23 15:02:41,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:02:41,598 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:02:41,655 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_c722c8c8-f1f0-48e1-a878-0df7703ce969/sv-benchmarks/c/product-lines/email_spec6_product31.cil.c[31008,31021] [2022-11-23 15:02:41,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:02:41,752 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:02:41,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41 WrapperNode [2022-11-23 15:02:41,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:02:41,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:02:41,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:02:41,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:02:41,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:41,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:41,926 INFO L138 Inliner]: procedures = 132, calls = 225, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1045 [2022-11-23 15:02:41,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:02:41,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:02:41,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:02:41,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:02:41,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:41,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:41,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:41,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:41,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:41,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:42,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:42,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:42,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:02:42,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:02:42,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:02:42,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:02:42,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (1/1) ... [2022-11-23 15:02:42,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:02:42,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:02:42,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:02:42,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:02:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 15:02:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 15:02:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 15:02:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 15:02:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 15:02:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 15:02:42,126 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:02:42,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:02:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:02:42,127 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:02:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:02:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:02:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:02:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:02:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 15:02:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 15:02:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 15:02:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 15:02:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:02:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:02:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:02:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:02:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:02:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:02:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:02:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:02:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 15:02:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 15:02:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 15:02:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 15:02:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:02:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:02:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:02:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:02:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:02:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:02:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 15:02:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 15:02:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:02:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:02:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 15:02:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 15:02:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:02:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:02:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:02:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:02:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:02:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:02:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:02:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:02:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:02:42,550 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:02:42,554 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:02:43,599 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:02:44,212 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:02:44,213 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:02:44,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:44 BoogieIcfgContainer [2022-11-23 15:02:44,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:02:44,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:02:44,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:02:44,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:02:44,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:02:40" (1/3) ... [2022-11-23 15:02:44,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52589ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:44, skipping insertion in model container [2022-11-23 15:02:44,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:41" (2/3) ... [2022-11-23 15:02:44,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52589ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:44, skipping insertion in model container [2022-11-23 15:02:44,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:44" (3/3) ... [2022-11-23 15:02:44,230 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product31.cil.c [2022-11-23 15:02:44,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:02:44,254 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:02:44,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:02:44,332 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;@1dde3e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:02:44,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:02:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 119 states have (on average 1.3109243697478992) internal successors, (156), 123 states have internal predecessors, (156), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 15:02:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 15:02:44,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:02:44,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:02:44,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:02:44,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:02:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash -371379297, now seen corresponding path program 1 times [2022-11-23 15:02:44,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:02:44,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113673744] [2022-11-23 15:02:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:02:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:02:44,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:02:44,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113673744] [2022-11-23 15:02:44,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113673744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:02:44,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:02:44,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:02:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519933692] [2022-11-23 15:02:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:02:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:02:44,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:02:44,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:02:44,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:02:44,924 INFO L87 Difference]: Start difference. First operand has 205 states, 119 states have (on average 1.3109243697478992) internal successors, (156), 123 states have internal predecessors, (156), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:02:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:02:45,138 INFO L93 Difference]: Finished difference Result 327 states and 434 transitions. [2022-11-23 15:02:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:02:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 80 [2022-11-23 15:02:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:02:45,153 INFO L225 Difference]: With dead ends: 327 [2022-11-23 15:02:45,153 INFO L226 Difference]: Without dead ends: 202 [2022-11-23 15:02:45,158 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 [2022-11-23 15:02:45,161 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:02:45,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:02:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-23 15:02:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-11-23 15:02:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 117 states have (on average 1.2820512820512822) internal successors, (150), 120 states have internal predecessors, (150), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-23 15:02:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 271 transitions. [2022-11-23 15:02:45,224 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 271 transitions. Word has length 80 [2022-11-23 15:02:45,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:02:45,226 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 271 transitions. [2022-11-23 15:02:45,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:02:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 271 transitions. [2022-11-23 15:02:45,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 15:02:45,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:02:45,231 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:02:45,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:02:45,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:02:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:02:45,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1238501977, now seen corresponding path program 1 times [2022-11-23 15:02:45,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:02:45,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909766521] [2022-11-23 15:02:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:02:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:02:45,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:02:45,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909766521] [2022-11-23 15:02:45,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909766521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:02:45,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:02:45,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:02:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113051524] [2022-11-23 15:02:45,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:02:45,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:02:45,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:02:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:02:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:02:45,558 INFO L87 Difference]: Start difference. First operand 202 states and 271 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:02:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:02:45,729 INFO L93 Difference]: Finished difference Result 323 states and 422 transitions. [2022-11-23 15:02:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:02:45,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 81 [2022-11-23 15:02:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:02:45,732 INFO L225 Difference]: With dead ends: 323 [2022-11-23 15:02:45,733 INFO L226 Difference]: Without dead ends: 204 [2022-11-23 15:02:45,734 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 [2022-11-23 15:02:45,740 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 0 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:02:45,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 467 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:02:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-23 15:02:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-11-23 15:02:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 122 states have internal predecessors, (152), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-23 15:02:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 273 transitions. [2022-11-23 15:02:45,765 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 273 transitions. Word has length 81 [2022-11-23 15:02:45,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:02:45,765 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 273 transitions. [2022-11-23 15:02:45,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:02:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 273 transitions. [2022-11-23 15:02:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 15:02:45,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:02:45,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:02:45,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:02:45,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:02:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:02:45,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1933579366, now seen corresponding path program 1 times [2022-11-23 15:02:45,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:02:45,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937749398] [2022-11-23 15:02:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:02:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:02:45,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:02:45,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937749398] [2022-11-23 15:02:45,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937749398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:02:45,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:02:45,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:02:45,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482067179] [2022-11-23 15:02:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:02:45,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:02:45,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:02:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:02:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:02:45,910 INFO L87 Difference]: Start difference. First operand 204 states and 273 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:02:46,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:02:46,060 INFO L93 Difference]: Finished difference Result 438 states and 605 transitions. [2022-11-23 15:02:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:02:46,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 86 [2022-11-23 15:02:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:02:46,066 INFO L225 Difference]: With dead ends: 438 [2022-11-23 15:02:46,066 INFO L226 Difference]: Without dead ends: 252 [2022-11-23 15:02:46,071 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 [2022-11-23 15:02:46,074 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 57 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:02:46,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 486 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:02:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-11-23 15:02:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2022-11-23 15:02:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 151 states have (on average 1.3576158940397351) internal successors, (205), 154 states have internal predecessors, (205), 72 states have call successors, (72), 23 states have call predecessors, (72), 23 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-23 15:02:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 348 transitions. [2022-11-23 15:02:46,106 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 348 transitions. Word has length 86 [2022-11-23 15:02:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:02:46,107 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 348 transitions. [2022-11-23 15:02:46,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 15:02:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 348 transitions. [2022-11-23 15:02:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 15:02:46,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:02:46,111 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:02:46,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:02:46,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:02:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:02:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1100851635, now seen corresponding path program 1 times [2022-11-23 15:02:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:02:46,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725107192] [2022-11-23 15:02:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:02:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:02:46,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:02:46,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725107192] [2022-11-23 15:02:46,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725107192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:02:46,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318100730] [2022-11-23 15:02:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:02:46,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:02:46,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:02:46,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:02:46,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:02:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:02:46,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:02:46,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:02:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:02:46,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:02:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:02:46,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318100730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:02:46,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183072770] [2022-11-23 15:02:47,002 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-23 15:02:47,003 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:02:47,010 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:02:47,016 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:02:47,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:03:26,308 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 15:03:26,672 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 486 for LOIs [2022-11-23 15:04:11,067 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 454 for LOIs [2022-11-23 15:04:11,382 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 15:04:11,733 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 484 for LOIs [2022-11-23 15:04:52,365 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 442 for LOIs [2022-11-23 15:04:52,653 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 250 for LOIs [2022-11-23 15:04:52,725 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-11-23 15:04:52,765 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 457 for LOIs [2022-11-23 15:04:53,497 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 252 for LOIs [2022-11-23 15:04:53,538 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:05:22,805 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 468 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:05:35,145 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 490 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:05:41,125 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 502 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:05:54,065 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 566 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:00,704 WARN L233 SmtUtils]: Spent 6.33s 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) [2022-11-23 15:06:07,399 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 565 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:16,791 WARN L233 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 569 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:26,110 WARN L233 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 565 DAG size of output: 423 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:35,561 WARN L233 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 571 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:42,280 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 564 DAG size of output: 351 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:49,603 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 486 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:57,321 WARN L233 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 500 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:22,413 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 470 DAG size of output: 285 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:33,816 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification. DAG size of input: 547 DAG size of output: 390 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:44,721 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 484 DAG size of output: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:07:50,351 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 496 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:21,713 WARN L233 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 543 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:30,100 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 545 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:08:39,748 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 587 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:00,348 WARN L233 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 606 DAG size of output: 485 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:12,894 WARN L233 SmtUtils]: Spent 11.72s on a formula simplification. DAG size of input: 607 DAG size of output: 486 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:18,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [183072770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:09:18,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:09:18,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-11-23 15:09:18,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106690416] [2022-11-23 15:09:18,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:09:18,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-23 15:09:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:09:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-23 15:09:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3372, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 15:09:18,452 INFO L87 Difference]: Start difference. First operand 247 states and 348 transitions. Second operand has 55 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 33 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-23 15:09:32,594 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 498 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:39,574 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 494 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:09:48,398 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 496 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:10:12,543 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 460 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:10:23,923 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 483 DAG size of output: 397 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:10:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:43,847 INFO L93 Difference]: Finished difference Result 643 states and 957 transitions. [2022-11-23 15:10:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-23 15:10:43,848 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 33 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) Word has length 87 [2022-11-23 15:10:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:43,851 INFO L225 Difference]: With dead ends: 643 [2022-11-23 15:10:43,851 INFO L226 Difference]: Without dead ends: 414 [2022-11-23 15:10:43,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 311.8s TimeCoverageRelationStatistics Valid=236, Invalid=4456, Unknown=0, NotChecked=0, Total=4692 [2022-11-23 15:10:43,855 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 253 mSDsluCounter, 7228 mSDsCounter, 0 mSdLazyCounter, 7624 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 7527 SdHoareTripleChecker+Invalid, 7658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 7624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:43,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 7527 Invalid, 7658 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [34 Valid, 7624 Invalid, 0 Unknown, 0 Unchecked, 37.5s Time] [2022-11-23 15:10:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-23 15:10:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 359. [2022-11-23 15:10:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 237 states have (on average 1.40084388185654) internal successors, (332), 241 states have internal predecessors, (332), 90 states have call successors, (90), 32 states have call predecessors, (90), 31 states have return successors, (90), 87 states have call predecessors, (90), 89 states have call successors, (90) [2022-11-23 15:10:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 512 transitions. [2022-11-23 15:10:44,165 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 512 transitions. Word has length 87 [2022-11-23 15:10:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:44,166 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 512 transitions. [2022-11-23 15:10:44,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 33 states have internal predecessors, (43), 17 states have call successors, (19), 11 states have call predecessors, (19), 9 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-23 15:10:44,166 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 512 transitions. [2022-11-23 15:10:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 15:10:44,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:44,171 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:44,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:10:44,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:44,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:44,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:44,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1234805997, now seen corresponding path program 1 times [2022-11-23 15:10:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:44,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623025112] [2022-11-23 15:10:44,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:44,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:10:44,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:44,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623025112] [2022-11-23 15:10:44,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623025112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:44,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:44,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:10:44,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313350137] [2022-11-23 15:10:44,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:44,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:10:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:10:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:10:44,523 INFO L87 Difference]: Start difference. First operand 359 states and 512 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:10:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:44,973 INFO L93 Difference]: Finished difference Result 832 states and 1230 transitions. [2022-11-23 15:10:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:10:44,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 92 [2022-11-23 15:10:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:44,977 INFO L225 Difference]: With dead ends: 832 [2022-11-23 15:10:44,977 INFO L226 Difference]: Without dead ends: 499 [2022-11-23 15:10:44,978 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 [2022-11-23 15:10:44,979 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 55 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:44,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 487 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-11-23 15:10:45,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 492. [2022-11-23 15:10:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 345 states have (on average 1.4753623188405798) internal successors, (509), 349 states have internal predecessors, (509), 115 states have call successors, (115), 32 states have call predecessors, (115), 31 states have return successors, (115), 112 states have call predecessors, (115), 114 states have call successors, (115) [2022-11-23 15:10:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 739 transitions. [2022-11-23 15:10:45,272 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 739 transitions. Word has length 92 [2022-11-23 15:10:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:45,273 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 739 transitions. [2022-11-23 15:10:45,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:10:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 739 transitions. [2022-11-23 15:10:45,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 15:10:45,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:45,277 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:45,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:10:45,277 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:45,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1186984509, now seen corresponding path program 1 times [2022-11-23 15:10:45,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:45,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212634922] [2022-11-23 15:10:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:45,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:10:45,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:45,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212634922] [2022-11-23 15:10:45,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212634922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:10:45,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691793310] [2022-11-23 15:10:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:45,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:45,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:45,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:10:45,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c722c8c8-f1f0-48e1-a878-0df7703ce969/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:10:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:45,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:10:45,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:10:45,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 15:10:46,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691793310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:46,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1288860103] [2022-11-23 15:10:46,036 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-23 15:10:46,036 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:10:46,038 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:10:46,038 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:10:46,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:11:28,246 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 15:11:28,557 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 269 for LOIs [2022-11-23 15:11:30,359 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 15:11:30,398 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 15:11:30,693 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 269 for LOIs [2022-11-23 15:11:54,077 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 229 for LOIs [2022-11-23 15:11:54,117 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 249 for LOIs [2022-11-23 15:11:54,186 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 429 for LOIs [2022-11-23 15:11:54,429 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 484 for LOIs [2022-11-23 15:11:57,701 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 251 for LOIs [2022-11-23 15:11:57,755 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:12:29,539 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 468 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:41,995 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 490 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:48,036 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 502 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:14,948 WARN L233 SmtUtils]: Spent 20.28s on a formula simplification. DAG size of input: 587 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:35,688 WARN L233 SmtUtils]: Spent 20.38s on a formula simplification. DAG size of input: 589 DAG size of output: 461 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:46,765 WARN L233 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 588 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:57,807 WARN L233 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 586 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:08,734 WARN L233 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 585 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:24,127 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 479 DAG size of output: 279 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:14,004 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 542 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:21,699 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 544 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:30,828 WARN L233 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 586 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:49,889 WARN L233 SmtUtils]: Spent 10.58s on a formula simplification. DAG size of input: 605 DAG size of output: 484 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:02,990 WARN L233 SmtUtils]: Spent 9.69s on a formula simplification. DAG size of input: 616 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:07,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1288860103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:16:07,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:16:07,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [4, 4, 4] total 63 [2022-11-23 15:16:07,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954403374] [2022-11-23 15:16:07,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:16:07,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-23 15:16:07,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:16:07,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-23 15:16:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3742, Unknown=0, NotChecked=0, Total=3906 [2022-11-23 15:16:07,896 INFO L87 Difference]: Start difference. First operand 492 states and 739 transitions. Second operand has 58 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 35 states have internal predecessors, (46), 18 states have call successors, (20), 11 states have call predecessors, (20), 9 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18)